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The following commit(s) were added to refs/heads/main by this push:
new 633b22bd6de4 CAMEL-22871: camel-core - Add simple function to assign a
variable (#20865)
633b22bd6de4 is described below
commit 633b22bd6de46887c61704cb1fdb0b860f1fdaf5
Author: Claus Ibsen <[email protected]>
AuthorDate: Mon Jan 19 07:22:10 2026 +0100
CAMEL-22871: camel-core - Add simple function to assign a variable (#20865)
---
.../org/apache/camel/catalog/languages/simple.json | 62 ++++-----
.../language/csimple/joor/OriginalSimpleTest.java | 51 +++++++
.../jsonpath/JsonPathSimpleSetVariableTest.java | 99 ++++++++++++++
.../org/apache/camel/language/simple/simple.json | 62 ++++-----
.../modules/languages/pages/simple-language.adoc | 2 +
.../camel/language/csimple/CSimpleHelper.java | 24 ++++
.../camel/language/simple/SimpleConstants.java | 6 +
.../language/simple/SimpleExpressionBuilder.java | 84 ++++++++++++
.../simple/ast/SimpleFunctionExpression.java | 146 +++++++++++++++++++++
.../apache/camel/language/simple/SimpleTest.java | 73 +++++++++++
10 files changed, 549 insertions(+), 60 deletions(-)
diff --git
a/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/languages/simple.json
b/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/languages/simple.json
index a6ab10fed80d..1653301ef4f9 100644
---
a/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/languages/simple.json
+++
b/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/languages/simple.json
@@ -75,35 +75,37 @@
"substringBetween(exp,after,before)": { "index": 49, "kind": "function",
"displayName": "Substring Between", "group": "function", "label": "function",
"required": false, "javaType": "int", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Returns a random number between min (included) and max (excluded).", "ognl":
false, "suffix": "}" },
"split(exp,separator)": { "index": 50, "kind": "function", "displayName":
"Split String Values", "group": "function", "label": "function", "required":
false, "javaType": "String[]", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Splits the message body\/expression as a String value using the separator into
a String array", "ognl": false, "suffix": "}" },
"capitalize(exp)": { "index": 51, "kind": "function", "displayName":
"Capitalize String Values", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Capitalizes the message body\/expression as a String value (upper case every
words)", "ognl": false, "suffix": "}" },
- "random(min,max)": { "index": 52, "kind": "function", "displayName":
"Random", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Returns a substring of
the message body\/expression that are between after and before. Returns null if
nothing comes between.", "ognl": false, "suffix": "}" },
- "skip(num)": { "index": 53, "kind": "function", "displayName": "Skip First
Items from the Message Body", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The skip function iterates the message body and skips
the first number of items. This can be used with the Splitter EIP to split a
message body and skip the first N number of [...]
- "convertTo(exp,type)": { "index": 54, "kind": "function", "displayName":
"Convert To", "group": "function", "label": "function", "required": false,
"javaType": "", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Converts the message body
(or expression) to the specified type.", "ognl": true, "suffix": "}" },
- "isEmpty(exp)": { "index": 55, "kind": "function", "displayName": "Is
Empty", "group": "function", "label": "function", "required": false,
"javaType": "boolean", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Whether the message
body (or expression) is null or empty (list\/map types are tested if they have
0 elements).", "ognl": false, "suffix": "}" },
- "trim(exp)": { "index": 56, "kind": "function", "displayName": "Trim",
"group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The trim function trims
the message body (or expression) by removing all leading and trailing white
spaces.", "ognl": false, "suffix": "}" },
- "normalizeWhitespace(exp)": { "index": 57, "kind": "function",
"displayName": "Normalize Whitspace", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Normalizes the whitespace in the message body (or expression) by cleaning up
excess whitespaces.", "ognl": false, "suffix": "}" },
- "length(exp)": { "index": 58, "kind": "function", "displayName": "Length",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The payload length (number of bytes) of the
message body (or expression).", "ognl": false, "suffix": "}" },
- "size(exp)": { "index": 59, "kind": "function", "displayName": "Size",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The size of the message body (or expression).
If the payload is java.util.Collection or java.util.Map based then the size is
the number of elements; otherwise the payload size in bytes.", "ognl": false,
"suffix": "}" },
- "uppercase(exp)": { "index": 60, "kind": "function", "displayName":
"Uppercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Uppercases the message
body (or expression)", "ognl": false, "suffix": "}" },
- "lowercase(exp)": { "index": 61, "kind": "function", "displayName":
"Lowercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Lowercases the message
body (or expression)", "ognl": false, "suffix": "}" },
- "concat(exp,exp,separator)": { "index": 62, "kind": "function",
"displayName": "Concat", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Performs a string concat using two expressions (message body as default) with
optional separator", "ognl": false, "suffix": "}" },
- "collate(num)": { "index": 63, "kind": "function", "displayName": "Group
Message Body into Sub Lists", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The collate function iterates the message body and
groups the data into sub lists of specified size. This can be used with the
Splitter EIP to split a message body and group\/ba [...]
- "join(separator,prefix,exp)": { "index": 64, "kind": "function",
"displayName": "Join", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
join function iterates the message body\/expression and joins the data into a
string. The separator is by default a comma. The prefix is optional. The join
uses the message body as source by default. [...]
- "messageHistory(boolean)": { "index": 65, "kind": "function",
"displayName": "Print Message History", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The message history of the current exchange (how it has
been routed). This is similar to the route stack-trace message history the
error handler logs in case of an unhandled exception. The b [...]
- "uuid(type)": { "index": 66, "kind": "function", "displayName": "Generate
UUID", "group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Returns a UUID using the
Camel `UuidGenerator`. You can choose between `default`, `classic`, `short` and
`simple` as the type. If no type is given, the default is used. It is also
possible to use a custom `UuidG [...]
- "hash(exp,algorithm)": { "index": 67, "kind": "function", "displayName":
"Compute Hash Value", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Returns a hashed value (string in hex decimal) of the message body\/expression
using JDK MessageDigest. The algorithm can be SHA-256 (default) or SHA3-256.",
"ognl": false, "suffix": "}" },
- "empty(type)": { "index": 68, "kind": "function", "displayName": "Create
Empty Object", "group": "function", "label": "function", "required": false,
"javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Creates a new empty
object (decided by type). Use `string` to create an empty String. Use `list` to
create an empty `java.util.ArrayList`. Use `map` to create an empty
`java.util.LinkedHashMap`.", "ognl": [...]
- "iif(predicate,trueExp,falseExp)": { "index": 69, "kind": "function",
"displayName": "If Then Else", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Evaluates the predicate and returns the value of trueExp or falseExp. This
function is similar to the ternary operator in Java.", "ognl": false, "suffix":
"}" },
- "list(val...)": { "index": 70, "kind": "function", "displayName": "Create
List of values", "group": "function", "label": "function", "required": false,
"javaType": "java.util.ArrayList", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
list function creates an ArrayList with the given set of values.", "ognl":
false, "suffix": "}" },
- "map(key1,value1,...)": { "index": 71, "kind": "function", "displayName":
"Create Map of pairs", "group": "function", "label": "function", "required":
false, "javaType": "java.util.LinkedHashMap", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The map function creates a LinkedHashMap with the given set of
pairs.", "ognl": false, "suffix": "}" },
- "attachments": { "index": 72, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "java.util.Map", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "All
the attachments as a Map<String,DataHandler.", "ognl": false, "suffix": "}" },
- "attachments.size": { "index": 73, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The number of attachments.
Is 0 if there are no attachments.", "ognl": false, "suffix": "}" },
- "attachmentContentAsText": { "index": 74, "kind": "function",
"displayName": "Attachment Content As Text", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment as text (ie String).",
"ognl": false, "suffix": "}" },
- "attachmentContent": { "index": 75, "kind": "function", "displayName":
"Attachment Content", "group": "function", "label": "function", "required":
false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
content of the attachment", "ognl": false, "suffix": "}" },
- "attachmentContentAs(type)": { "index": 76, "kind": "function",
"displayName": "Attachment Content As", "group": "function", "label":
"function", "required": false, "javaType": "Object", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment, converted to the given
type.", "ognl": false, "suffix": "}" },
- "attachmentHeader(key,name)": { "index": 77, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name.", "ognl": false, "suffix": "}" },
- "attachmentHeader(key,name,type)": { "index": 78, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name, converted to the given type.", "ognl":
false, "suffix": "}" },
- "attachment(key)": { "index": 79, "kind": "function", "displayName":
"Attachment", "group": "function", "label": "function", "required": false,
"javaType": "jakarta.activation.DataHandler", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The DataHandler for the given attachment.", "ognl": true,
"suffix": "}" },
- "base64Encode(exp)": { "index": 80, "kind": "function", "displayName":
"Base64 Encode", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Base64 encodes the
message body (or expression)", "ognl": false, "suffix": "}" },
- "base64Decode(exp)": { "index": 81, "kind": "function", "displayName":
"Base64 Decode", "group": "function", "label": "function", "required": false,
"javaType": "byte[]", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Base64 decodes the
message body (or expression)", "ognl": false, "suffix": "}" }
+ "setHeader(name,type,exp)": { "index": 52, "kind": "function",
"displayName": "Set Header", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Sets a message header with the given expression (optional converting to the
given type)", "ognl": false, "suffix": "}" },
+ "setVariable(name,type,exp)": { "index": 53, "kind": "function",
"displayName": "Set Variable", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Sets a variable with the given expression (optional converting to the given
type)", "ognl": false, "suffix": "}" },
+ "random(min,max)": { "index": 54, "kind": "function", "displayName":
"Random", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Returns a substring of
the message body\/expression that are between after and before. Returns null if
nothing comes between.", "ognl": false, "suffix": "}" },
+ "skip(num)": { "index": 55, "kind": "function", "displayName": "Skip First
Items from the Message Body", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The skip function iterates the message body and skips
the first number of items. This can be used with the Splitter EIP to split a
message body and skip the first N number of [...]
+ "convertTo(exp,type)": { "index": 56, "kind": "function", "displayName":
"Convert To", "group": "function", "label": "function", "required": false,
"javaType": "", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Converts the message body
(or expression) to the specified type.", "ognl": true, "suffix": "}" },
+ "isEmpty(exp)": { "index": 57, "kind": "function", "displayName": "Is
Empty", "group": "function", "label": "function", "required": false,
"javaType": "boolean", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Whether the message
body (or expression) is null or empty (list\/map types are tested if they have
0 elements).", "ognl": false, "suffix": "}" },
+ "trim(exp)": { "index": 58, "kind": "function", "displayName": "Trim",
"group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The trim function trims
the message body (or expression) by removing all leading and trailing white
spaces.", "ognl": false, "suffix": "}" },
+ "normalizeWhitespace(exp)": { "index": 59, "kind": "function",
"displayName": "Normalize Whitspace", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Normalizes the whitespace in the message body (or expression) by cleaning up
excess whitespaces.", "ognl": false, "suffix": "}" },
+ "length(exp)": { "index": 60, "kind": "function", "displayName": "Length",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The payload length (number of bytes) of the
message body (or expression).", "ognl": false, "suffix": "}" },
+ "size(exp)": { "index": 61, "kind": "function", "displayName": "Size",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The size of the message body (or expression).
If the payload is java.util.Collection or java.util.Map based then the size is
the number of elements; otherwise the payload size in bytes.", "ognl": false,
"suffix": "}" },
+ "uppercase(exp)": { "index": 62, "kind": "function", "displayName":
"Uppercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Uppercases the message
body (or expression)", "ognl": false, "suffix": "}" },
+ "lowercase(exp)": { "index": 63, "kind": "function", "displayName":
"Lowercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Lowercases the message
body (or expression)", "ognl": false, "suffix": "}" },
+ "concat(exp,exp,separator)": { "index": 64, "kind": "function",
"displayName": "Concat", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Performs a string concat using two expressions (message body as default) with
optional separator", "ognl": false, "suffix": "}" },
+ "collate(num)": { "index": 65, "kind": "function", "displayName": "Group
Message Body into Sub Lists", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The collate function iterates the message body and
groups the data into sub lists of specified size. This can be used with the
Splitter EIP to split a message body and group\/ba [...]
+ "join(separator,prefix,exp)": { "index": 66, "kind": "function",
"displayName": "Join", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
join function iterates the message body\/expression and joins the data into a
string. The separator is by default a comma. The prefix is optional. The join
uses the message body as source by default. [...]
+ "messageHistory(boolean)": { "index": 67, "kind": "function",
"displayName": "Print Message History", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The message history of the current exchange (how it has
been routed). This is similar to the route stack-trace message history the
error handler logs in case of an unhandled exception. The b [...]
+ "uuid(type)": { "index": 68, "kind": "function", "displayName": "Generate
UUID", "group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Returns a UUID using the
Camel `UuidGenerator`. You can choose between `default`, `classic`, `short` and
`simple` as the type. If no type is given, the default is used. It is also
possible to use a custom `UuidG [...]
+ "hash(exp,algorithm)": { "index": 69, "kind": "function", "displayName":
"Compute Hash Value", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Returns a hashed value (string in hex decimal) of the message body\/expression
using JDK MessageDigest. The algorithm can be SHA-256 (default) or SHA3-256.",
"ognl": false, "suffix": "}" },
+ "empty(type)": { "index": 70, "kind": "function", "displayName": "Create
Empty Object", "group": "function", "label": "function", "required": false,
"javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Creates a new empty
object (decided by type). Use `string` to create an empty String. Use `list` to
create an empty `java.util.ArrayList`. Use `map` to create an empty
`java.util.LinkedHashMap`.", "ognl": [...]
+ "iif(predicate,trueExp,falseExp)": { "index": 71, "kind": "function",
"displayName": "If Then Else", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Evaluates the predicate and returns the value of trueExp or falseExp. This
function is similar to the ternary operator in Java.", "ognl": false, "suffix":
"}" },
+ "list(val...)": { "index": 72, "kind": "function", "displayName": "Create
List of values", "group": "function", "label": "function", "required": false,
"javaType": "java.util.ArrayList", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
list function creates an ArrayList with the given set of values.", "ognl":
false, "suffix": "}" },
+ "map(key1,value1,...)": { "index": 73, "kind": "function", "displayName":
"Create Map of pairs", "group": "function", "label": "function", "required":
false, "javaType": "java.util.LinkedHashMap", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The map function creates a LinkedHashMap with the given set of
pairs.", "ognl": false, "suffix": "}" },
+ "attachments": { "index": 74, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "java.util.Map", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "All
the attachments as a Map<String,DataHandler.", "ognl": false, "suffix": "}" },
+ "attachments.size": { "index": 75, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The number of attachments.
Is 0 if there are no attachments.", "ognl": false, "suffix": "}" },
+ "attachmentContentAsText": { "index": 76, "kind": "function",
"displayName": "Attachment Content As Text", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment as text (ie String).",
"ognl": false, "suffix": "}" },
+ "attachmentContent": { "index": 77, "kind": "function", "displayName":
"Attachment Content", "group": "function", "label": "function", "required":
false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
content of the attachment", "ognl": false, "suffix": "}" },
+ "attachmentContentAs(type)": { "index": 78, "kind": "function",
"displayName": "Attachment Content As", "group": "function", "label":
"function", "required": false, "javaType": "Object", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment, converted to the given
type.", "ognl": false, "suffix": "}" },
+ "attachmentHeader(key,name)": { "index": 79, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name.", "ognl": false, "suffix": "}" },
+ "attachmentHeader(key,name,type)": { "index": 80, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name, converted to the given type.", "ognl":
false, "suffix": "}" },
+ "attachment(key)": { "index": 81, "kind": "function", "displayName":
"Attachment", "group": "function", "label": "function", "required": false,
"javaType": "jakarta.activation.DataHandler", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The DataHandler for the given attachment.", "ognl": true,
"suffix": "}" },
+ "base64Encode(exp)": { "index": 82, "kind": "function", "displayName":
"Base64 Encode", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Base64 encodes the
message body (or expression)", "ognl": false, "suffix": "}" },
+ "base64Decode(exp)": { "index": 83, "kind": "function", "displayName":
"Base64 Decode", "group": "function", "label": "function", "required": false,
"javaType": "byte[]", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Base64 decodes the
message body (or expression)", "ognl": false, "suffix": "}" }
}
}
diff --git
a/components/camel-csimple-joor/src/test/java/org/apache/camel/language/csimple/joor/OriginalSimpleTest.java
b/components/camel-csimple-joor/src/test/java/org/apache/camel/language/csimple/joor/OriginalSimpleTest.java
index bafd03803a88..86946fd940a1 100644
---
a/components/camel-csimple-joor/src/test/java/org/apache/camel/language/csimple/joor/OriginalSimpleTest.java
+++
b/components/camel-csimple-joor/src/test/java/org/apache/camel/language/csimple/joor/OriginalSimpleTest.java
@@ -2686,6 +2686,57 @@ public class OriginalSimpleTest extends
LanguageTestSupport {
assertEquals("carlsberg", s);
}
+ @Test
+ public void testSetHeader() {
+ exchange.getMessage().setBody("Hello World");
+
+ Expression expression =
context.resolveLanguage("csimple").createExpression("${setHeader(foo,${body})}");
+ Object s = expression.evaluate(exchange, String.class);
+ assertNull(s);
+ assertEquals("Hello World", exchange.getMessage().getHeader("foo"));
+
+ exchange.getMessage().setBody("123");
+ expression =
context.resolveLanguage("csimple").createExpression("${setHeader(bar,int,${body})}");
+ s = expression.evaluate(exchange, String.class);
+ assertNull(s);
+ assertIsInstanceOf(Integer.class,
exchange.getMessage().getHeader("bar"));
+ assertEquals(123, exchange.getMessage().getHeader("bar"));
+
+ // null should remove the variable
+ expression =
context.resolveLanguage("csimple").createExpression("${setHeader(bar,${null})}");
+ s = expression.evaluate(exchange, String.class);
+ assertNull(s);
+ assertNull(exchange.getMessage().getHeader("bar"));
+ }
+
+ @Test
+ public void testSetVariable() {
+ exchange.getVariables().clear();
+ assertEquals(0, exchange.getVariables().size());
+ exchange.getMessage().setBody("Hello World");
+
+ Expression expression =
context.resolveLanguage("csimple").createExpression("${setVariable(foo,${body})}");
+ Object s = expression.evaluate(exchange, String.class);
+ assertNull(s);
+ assertEquals("Hello World", exchange.getVariable("foo"));
+ assertEquals(1, exchange.getVariables().size());
+
+ exchange.getMessage().setBody("123");
+ expression =
context.resolveLanguage("csimple").createExpression("${setVariable(bar,int,${body})}");
+ s = expression.evaluate(exchange, String.class);
+ assertNull(s);
+ assertIsInstanceOf(Integer.class, exchange.getVariable("bar"));
+ assertEquals(123, exchange.getVariable("bar"));
+ assertEquals(2, exchange.getVariables().size());
+
+ // null should remove the variable
+ expression =
context.resolveLanguage("csimple").createExpression("${setVariable(bar,${null})}");
+ s = expression.evaluate(exchange, String.class);
+ assertNull(s);
+ assertNull(exchange.getVariable("bar"));
+ assertEquals(1, exchange.getVariables().size());
+ }
+
@Override
protected String getLanguageName() {
return "csimple";
diff --git
a/components/camel-jsonpath/src/test/java/org/apache/camel/jsonpath/JsonPathSimpleSetVariableTest.java
b/components/camel-jsonpath/src/test/java/org/apache/camel/jsonpath/JsonPathSimpleSetVariableTest.java
new file mode 100644
index 000000000000..a3a4afaf652f
--- /dev/null
+++
b/components/camel-jsonpath/src/test/java/org/apache/camel/jsonpath/JsonPathSimpleSetVariableTest.java
@@ -0,0 +1,99 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.camel.jsonpath;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.component.mock.MockEndpoint;
+import org.apache.camel.test.junit5.CamelTestSupport;
+import org.junit.jupiter.api.Test;
+
+public class JsonPathSimpleSetVariableTest extends CamelTestSupport {
+
+ private final String MAPPING = """
+ {
+ "id": "${jsonpath($.id)}",
+ "type": "${header.type}",
+ "amount": ${jsonpath($.amount)},
+ "status": "${iif(${jsonpath($.amount)} > 100,HIGH,LOW)}"
+ }
+ """;
+
+ private final String MAPPING2 = """
+ ${setVariable(myVar,${jsonpath($.amount)})}
+ {
+ "id": "${jsonpath($.id)}",
+ "type": "${header.type}",
+ "amount": ${jsonpath($.amount)},
+ "status": "${iif(${variable.myVar} > 100,HIGH,LOW)}"
+ }
+ """;
+
+ private final String EXPECTED = """
+ {
+ "id": "123",
+ "type": "silver",
+ "amount": 444,
+ "status": "HIGH"
+ }""";
+
+ @Override
+ protected RouteBuilder createRouteBuilder() {
+ return new RouteBuilder() {
+ @Override
+ public void configure() {
+ from("direct:start")
+ .transform().simple(MAPPING)
+ .log("${body}")
+ .to("mock:order");
+
+ from("direct:start2")
+
.transform().simple(MAPPING2).transform().simple("${trim()}")
+ .log("${body}")
+ .to("mock:order");
+ }
+ };
+ }
+
+ @Test
+ public void testMapping() throws Exception {
+ getMockEndpoint("mock:order").expectedBodiesReceived(EXPECTED);
+
+ template.sendBodyAndHeader("direct:start", """
+ {
+ "id": 123,
+ "amount": 444
+ }
+ """, "type", "silver");
+
+ MockEndpoint.assertIsSatisfied(context);
+ }
+
+ @Test
+ public void testMapping2() throws Exception {
+ getMockEndpoint("mock:order").expectedBodiesReceived(EXPECTED);
+
+ template.sendBodyAndHeader("direct:start2", """
+ {
+ "id": 123,
+ "amount": 444
+ }
+ """, "type", "silver");
+
+ MockEndpoint.assertIsSatisfied(context);
+ }
+
+}
diff --git
a/core/camel-core-languages/src/generated/resources/META-INF/org/apache/camel/language/simple/simple.json
b/core/camel-core-languages/src/generated/resources/META-INF/org/apache/camel/language/simple/simple.json
index a6ab10fed80d..1653301ef4f9 100644
---
a/core/camel-core-languages/src/generated/resources/META-INF/org/apache/camel/language/simple/simple.json
+++
b/core/camel-core-languages/src/generated/resources/META-INF/org/apache/camel/language/simple/simple.json
@@ -75,35 +75,37 @@
"substringBetween(exp,after,before)": { "index": 49, "kind": "function",
"displayName": "Substring Between", "group": "function", "label": "function",
"required": false, "javaType": "int", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Returns a random number between min (included) and max (excluded).", "ognl":
false, "suffix": "}" },
"split(exp,separator)": { "index": 50, "kind": "function", "displayName":
"Split String Values", "group": "function", "label": "function", "required":
false, "javaType": "String[]", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Splits the message body\/expression as a String value using the separator into
a String array", "ognl": false, "suffix": "}" },
"capitalize(exp)": { "index": 51, "kind": "function", "displayName":
"Capitalize String Values", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Capitalizes the message body\/expression as a String value (upper case every
words)", "ognl": false, "suffix": "}" },
- "random(min,max)": { "index": 52, "kind": "function", "displayName":
"Random", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Returns a substring of
the message body\/expression that are between after and before. Returns null if
nothing comes between.", "ognl": false, "suffix": "}" },
- "skip(num)": { "index": 53, "kind": "function", "displayName": "Skip First
Items from the Message Body", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The skip function iterates the message body and skips
the first number of items. This can be used with the Splitter EIP to split a
message body and skip the first N number of [...]
- "convertTo(exp,type)": { "index": 54, "kind": "function", "displayName":
"Convert To", "group": "function", "label": "function", "required": false,
"javaType": "", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Converts the message body
(or expression) to the specified type.", "ognl": true, "suffix": "}" },
- "isEmpty(exp)": { "index": 55, "kind": "function", "displayName": "Is
Empty", "group": "function", "label": "function", "required": false,
"javaType": "boolean", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Whether the message
body (or expression) is null or empty (list\/map types are tested if they have
0 elements).", "ognl": false, "suffix": "}" },
- "trim(exp)": { "index": 56, "kind": "function", "displayName": "Trim",
"group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The trim function trims
the message body (or expression) by removing all leading and trailing white
spaces.", "ognl": false, "suffix": "}" },
- "normalizeWhitespace(exp)": { "index": 57, "kind": "function",
"displayName": "Normalize Whitspace", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Normalizes the whitespace in the message body (or expression) by cleaning up
excess whitespaces.", "ognl": false, "suffix": "}" },
- "length(exp)": { "index": 58, "kind": "function", "displayName": "Length",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The payload length (number of bytes) of the
message body (or expression).", "ognl": false, "suffix": "}" },
- "size(exp)": { "index": 59, "kind": "function", "displayName": "Size",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The size of the message body (or expression).
If the payload is java.util.Collection or java.util.Map based then the size is
the number of elements; otherwise the payload size in bytes.", "ognl": false,
"suffix": "}" },
- "uppercase(exp)": { "index": 60, "kind": "function", "displayName":
"Uppercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Uppercases the message
body (or expression)", "ognl": false, "suffix": "}" },
- "lowercase(exp)": { "index": 61, "kind": "function", "displayName":
"Lowercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Lowercases the message
body (or expression)", "ognl": false, "suffix": "}" },
- "concat(exp,exp,separator)": { "index": 62, "kind": "function",
"displayName": "Concat", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Performs a string concat using two expressions (message body as default) with
optional separator", "ognl": false, "suffix": "}" },
- "collate(num)": { "index": 63, "kind": "function", "displayName": "Group
Message Body into Sub Lists", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The collate function iterates the message body and
groups the data into sub lists of specified size. This can be used with the
Splitter EIP to split a message body and group\/ba [...]
- "join(separator,prefix,exp)": { "index": 64, "kind": "function",
"displayName": "Join", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
join function iterates the message body\/expression and joins the data into a
string. The separator is by default a comma. The prefix is optional. The join
uses the message body as source by default. [...]
- "messageHistory(boolean)": { "index": 65, "kind": "function",
"displayName": "Print Message History", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The message history of the current exchange (how it has
been routed). This is similar to the route stack-trace message history the
error handler logs in case of an unhandled exception. The b [...]
- "uuid(type)": { "index": 66, "kind": "function", "displayName": "Generate
UUID", "group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Returns a UUID using the
Camel `UuidGenerator`. You can choose between `default`, `classic`, `short` and
`simple` as the type. If no type is given, the default is used. It is also
possible to use a custom `UuidG [...]
- "hash(exp,algorithm)": { "index": 67, "kind": "function", "displayName":
"Compute Hash Value", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Returns a hashed value (string in hex decimal) of the message body\/expression
using JDK MessageDigest. The algorithm can be SHA-256 (default) or SHA3-256.",
"ognl": false, "suffix": "}" },
- "empty(type)": { "index": 68, "kind": "function", "displayName": "Create
Empty Object", "group": "function", "label": "function", "required": false,
"javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Creates a new empty
object (decided by type). Use `string` to create an empty String. Use `list` to
create an empty `java.util.ArrayList`. Use `map` to create an empty
`java.util.LinkedHashMap`.", "ognl": [...]
- "iif(predicate,trueExp,falseExp)": { "index": 69, "kind": "function",
"displayName": "If Then Else", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Evaluates the predicate and returns the value of trueExp or falseExp. This
function is similar to the ternary operator in Java.", "ognl": false, "suffix":
"}" },
- "list(val...)": { "index": 70, "kind": "function", "displayName": "Create
List of values", "group": "function", "label": "function", "required": false,
"javaType": "java.util.ArrayList", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
list function creates an ArrayList with the given set of values.", "ognl":
false, "suffix": "}" },
- "map(key1,value1,...)": { "index": 71, "kind": "function", "displayName":
"Create Map of pairs", "group": "function", "label": "function", "required":
false, "javaType": "java.util.LinkedHashMap", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The map function creates a LinkedHashMap with the given set of
pairs.", "ognl": false, "suffix": "}" },
- "attachments": { "index": 72, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "java.util.Map", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "All
the attachments as a Map<String,DataHandler.", "ognl": false, "suffix": "}" },
- "attachments.size": { "index": 73, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The number of attachments.
Is 0 if there are no attachments.", "ognl": false, "suffix": "}" },
- "attachmentContentAsText": { "index": 74, "kind": "function",
"displayName": "Attachment Content As Text", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment as text (ie String).",
"ognl": false, "suffix": "}" },
- "attachmentContent": { "index": 75, "kind": "function", "displayName":
"Attachment Content", "group": "function", "label": "function", "required":
false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
content of the attachment", "ognl": false, "suffix": "}" },
- "attachmentContentAs(type)": { "index": 76, "kind": "function",
"displayName": "Attachment Content As", "group": "function", "label":
"function", "required": false, "javaType": "Object", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment, converted to the given
type.", "ognl": false, "suffix": "}" },
- "attachmentHeader(key,name)": { "index": 77, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name.", "ognl": false, "suffix": "}" },
- "attachmentHeader(key,name,type)": { "index": 78, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name, converted to the given type.", "ognl":
false, "suffix": "}" },
- "attachment(key)": { "index": 79, "kind": "function", "displayName":
"Attachment", "group": "function", "label": "function", "required": false,
"javaType": "jakarta.activation.DataHandler", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The DataHandler for the given attachment.", "ognl": true,
"suffix": "}" },
- "base64Encode(exp)": { "index": 80, "kind": "function", "displayName":
"Base64 Encode", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Base64 encodes the
message body (or expression)", "ognl": false, "suffix": "}" },
- "base64Decode(exp)": { "index": 81, "kind": "function", "displayName":
"Base64 Decode", "group": "function", "label": "function", "required": false,
"javaType": "byte[]", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Base64 decodes the
message body (or expression)", "ognl": false, "suffix": "}" }
+ "setHeader(name,type,exp)": { "index": 52, "kind": "function",
"displayName": "Set Header", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Sets a message header with the given expression (optional converting to the
given type)", "ognl": false, "suffix": "}" },
+ "setVariable(name,type,exp)": { "index": 53, "kind": "function",
"displayName": "Set Variable", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Sets a variable with the given expression (optional converting to the given
type)", "ognl": false, "suffix": "}" },
+ "random(min,max)": { "index": 54, "kind": "function", "displayName":
"Random", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Returns a substring of
the message body\/expression that are between after and before. Returns null if
nothing comes between.", "ognl": false, "suffix": "}" },
+ "skip(num)": { "index": 55, "kind": "function", "displayName": "Skip First
Items from the Message Body", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The skip function iterates the message body and skips
the first number of items. This can be used with the Splitter EIP to split a
message body and skip the first N number of [...]
+ "convertTo(exp,type)": { "index": 56, "kind": "function", "displayName":
"Convert To", "group": "function", "label": "function", "required": false,
"javaType": "", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Converts the message body
(or expression) to the specified type.", "ognl": true, "suffix": "}" },
+ "isEmpty(exp)": { "index": 57, "kind": "function", "displayName": "Is
Empty", "group": "function", "label": "function", "required": false,
"javaType": "boolean", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Whether the message
body (or expression) is null or empty (list\/map types are tested if they have
0 elements).", "ognl": false, "suffix": "}" },
+ "trim(exp)": { "index": 58, "kind": "function", "displayName": "Trim",
"group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The trim function trims
the message body (or expression) by removing all leading and trailing white
spaces.", "ognl": false, "suffix": "}" },
+ "normalizeWhitespace(exp)": { "index": 59, "kind": "function",
"displayName": "Normalize Whitspace", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Normalizes the whitespace in the message body (or expression) by cleaning up
excess whitespaces.", "ognl": false, "suffix": "}" },
+ "length(exp)": { "index": 60, "kind": "function", "displayName": "Length",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The payload length (number of bytes) of the
message body (or expression).", "ognl": false, "suffix": "}" },
+ "size(exp)": { "index": 61, "kind": "function", "displayName": "Size",
"group": "function", "label": "function", "required": false, "javaType": "int",
"prefix": "${", "deprecated": false, "deprecationNote": "", "autowired": false,
"secret": false, "description": "The size of the message body (or expression).
If the payload is java.util.Collection or java.util.Map based then the size is
the number of elements; otherwise the payload size in bytes.", "ognl": false,
"suffix": "}" },
+ "uppercase(exp)": { "index": 62, "kind": "function", "displayName":
"Uppercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Uppercases the message
body (or expression)", "ognl": false, "suffix": "}" },
+ "lowercase(exp)": { "index": 63, "kind": "function", "displayName":
"Lowercase", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Lowercases the message
body (or expression)", "ognl": false, "suffix": "}" },
+ "concat(exp,exp,separator)": { "index": 64, "kind": "function",
"displayName": "Concat", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Performs a string concat using two expressions (message body as default) with
optional separator", "ognl": false, "suffix": "}" },
+ "collate(num)": { "index": 65, "kind": "function", "displayName": "Group
Message Body into Sub Lists", "group": "function", "label": "function",
"required": false, "javaType": "java.util.Iterator", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The collate function iterates the message body and
groups the data into sub lists of specified size. This can be used with the
Splitter EIP to split a message body and group\/ba [...]
+ "join(separator,prefix,exp)": { "index": 66, "kind": "function",
"displayName": "Join", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
join function iterates the message body\/expression and joins the data into a
string. The separator is by default a comma. The prefix is optional. The join
uses the message body as source by default. [...]
+ "messageHistory(boolean)": { "index": 67, "kind": "function",
"displayName": "Print Message History", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The message history of the current exchange (how it has
been routed). This is similar to the route stack-trace message history the
error handler logs in case of an unhandled exception. The b [...]
+ "uuid(type)": { "index": 68, "kind": "function", "displayName": "Generate
UUID", "group": "function", "label": "function", "required": false, "javaType":
"String", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "Returns a UUID using the
Camel `UuidGenerator`. You can choose between `default`, `classic`, `short` and
`simple` as the type. If no type is given, the default is used. It is also
possible to use a custom `UuidG [...]
+ "hash(exp,algorithm)": { "index": 69, "kind": "function", "displayName":
"Compute Hash Value", "group": "function", "label": "function", "required":
false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Returns a hashed value (string in hex decimal) of the message body\/expression
using JDK MessageDigest. The algorithm can be SHA-256 (default) or SHA3-256.",
"ognl": false, "suffix": "}" },
+ "empty(type)": { "index": 70, "kind": "function", "displayName": "Create
Empty Object", "group": "function", "label": "function", "required": false,
"javaType": "Object", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Creates a new empty
object (decided by type). Use `string` to create an empty String. Use `list` to
create an empty `java.util.ArrayList`. Use `map` to create an empty
`java.util.LinkedHashMap`.", "ognl": [...]
+ "iif(predicate,trueExp,falseExp)": { "index": 71, "kind": "function",
"displayName": "If Then Else", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description":
"Evaluates the predicate and returns the value of trueExp or falseExp. This
function is similar to the ternary operator in Java.", "ognl": false, "suffix":
"}" },
+ "list(val...)": { "index": 72, "kind": "function", "displayName": "Create
List of values", "group": "function", "label": "function", "required": false,
"javaType": "java.util.ArrayList", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
list function creates an ArrayList with the given set of values.", "ognl":
false, "suffix": "}" },
+ "map(key1,value1,...)": { "index": 73, "kind": "function", "displayName":
"Create Map of pairs", "group": "function", "label": "function", "required":
false, "javaType": "java.util.LinkedHashMap", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The map function creates a LinkedHashMap with the given set of
pairs.", "ognl": false, "suffix": "}" },
+ "attachments": { "index": 74, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "java.util.Map", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "All
the attachments as a Map<String,DataHandler.", "ognl": false, "suffix": "}" },
+ "attachments.size": { "index": 75, "kind": "function", "displayName":
"Attachments", "group": "function", "label": "function", "required": false,
"javaType": "int", "prefix": "${", "deprecated": false, "deprecationNote": "",
"autowired": false, "secret": false, "description": "The number of attachments.
Is 0 if there are no attachments.", "ognl": false, "suffix": "}" },
+ "attachmentContentAsText": { "index": 76, "kind": "function",
"displayName": "Attachment Content As Text", "group": "function", "label":
"function", "required": false, "javaType": "String", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment as text (ie String).",
"ognl": false, "suffix": "}" },
+ "attachmentContent": { "index": 77, "kind": "function", "displayName":
"Attachment Content", "group": "function", "label": "function", "required":
false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
content of the attachment", "ognl": false, "suffix": "}" },
+ "attachmentContentAs(type)": { "index": 78, "kind": "function",
"displayName": "Attachment Content As", "group": "function", "label":
"function", "required": false, "javaType": "Object", "prefix": "${",
"deprecated": false, "deprecationNote": "", "autowired": false, "secret":
false, "description": "The content of the attachment, converted to the given
type.", "ognl": false, "suffix": "}" },
+ "attachmentHeader(key,name)": { "index": 79, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "String", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name.", "ognl": false, "suffix": "}" },
+ "attachmentHeader(key,name,type)": { "index": 80, "kind": "function",
"displayName": "Attachment Header", "group": "function", "label": "function",
"required": false, "javaType": "Object", "prefix": "${", "deprecated": false,
"deprecationNote": "", "autowired": false, "secret": false, "description": "The
attachment header with the given name, converted to the given type.", "ognl":
false, "suffix": "}" },
+ "attachment(key)": { "index": 81, "kind": "function", "displayName":
"Attachment", "group": "function", "label": "function", "required": false,
"javaType": "jakarta.activation.DataHandler", "prefix": "${", "deprecated":
false, "deprecationNote": "", "autowired": false, "secret": false,
"description": "The DataHandler for the given attachment.", "ognl": true,
"suffix": "}" },
+ "base64Encode(exp)": { "index": 82, "kind": "function", "displayName":
"Base64 Encode", "group": "function", "label": "function", "required": false,
"javaType": "String", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Base64 encodes the
message body (or expression)", "ognl": false, "suffix": "}" },
+ "base64Decode(exp)": { "index": 83, "kind": "function", "displayName":
"Base64 Decode", "group": "function", "label": "function", "required": false,
"javaType": "byte[]", "prefix": "${", "deprecated": false, "deprecationNote":
"", "autowired": false, "secret": false, "description": "Base64 decodes the
message body (or expression)", "ognl": false, "suffix": "}" }
}
}
diff --git
a/core/camel-core-languages/src/main/docs/modules/languages/pages/simple-language.adoc
b/core/camel-core-languages/src/main/docs/modules/languages/pages/simple-language.adoc
index a3774921cb50..b355513d5f5f 100644
---
a/core/camel-core-languages/src/main/docs/modules/languages/pages/simple-language.adoc
+++
b/core/camel-core-languages/src/main/docs/modules/languages/pages/simple-language.adoc
@@ -204,6 +204,8 @@ The Simple language has many built-in functions which
allows access to various p
|`replace(from,to,ex[])` | `String` | Replace all the string values in the
given expression. To make it easier to replace single and double quotes, then
you can use XML escaped values `\"` as double quote, `\'` as single
quote, and `\∅` as empty value.
|`routeGroup` | `String` | Returns the route group of the current route the
`Exchange` is being routed. Not all routes have a group assigned, so this may
be `null`.
|`routeId` | `String` | Returns the route id of the current route the
`Exchange` is being routed.
+|`setHeader(name,type,exp)` | `null` | Sets a message header with the given
expression (optional converting to the given type).
+|`setVariable(name,type,exp)` | `null` | Sets a variable with the given
expression (optional converting to the given type).
|`size()` | `int` | The size of the message body. If the payload is
`java.util.Collection` or `java.util.Map` based then the size is the number of
elements; otherwise the payload size in bytes.
|`size(exp)` | `int` | The size of the expression. If the payload is
`java.util.Collection` or `java.util.Map` based then the size is the number of
elements; otherwise the payload size in bytes.
|`skip(number)` | `Iterator` | The skip function iterates the message body and
skips the first number of items. This can be used with the Splitter EIP to
split a message body and skip the first N number of items.
diff --git
a/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleHelper.java
b/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleHelper.java
index 2d5fe8a2178d..4d205e4c488a 100644
---
a/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleHelper.java
+++
b/core/camel-core-languages/src/main/java/org/apache/camel/language/csimple/CSimpleHelper.java
@@ -987,4 +987,28 @@ public final class CSimpleHelper {
}
}
+ public static Object setHeader(Exchange exchange, String name, Class<?>
type, Object value) {
+ if (type != null && value != null) {
+ value = convertTo(exchange, type, value);
+ }
+ if (value != null) {
+ exchange.getMessage().setHeader(name, value);
+ } else {
+ exchange.getMessage().removeHeader(name);
+ }
+ return null;
+ }
+
+ public static Object setVariable(Exchange exchange, String name, Class<?>
type, Object value) {
+ if (type != null && value != null) {
+ value = convertTo(exchange, type, value);
+ }
+ if (value != null) {
+ exchange.setVariable(name, value);
+ } else {
+ exchange.removeVariable(name);
+ }
+ return null;
+ }
+
}
diff --git
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleConstants.java
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleConstants.java
index ab20fab19918..d9a5bf6253d0 100644
---
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleConstants.java
+++
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleConstants.java
@@ -192,6 +192,12 @@ public final class SimpleConstants {
label = "function",
javaType = "String", displayName = "Capitalize String Values")
public static final String CAPITALIZE = "capitalize(exp)";
+ @Metadata(description = "Sets a message header with the given expression
(optional converting to the given type)",
+ label = "function", javaType = "Object")
+ public static final String SET_HEADER = "setHeader(name,type,exp)";
+ @Metadata(description = "Sets a variable with the given expression
(optional converting to the given type)",
+ label = "function", javaType = "Object")
+ public static final String SET_VARIABLE = "setVariable(name,type,exp)";
@Metadata(description = "Returns a substring of the message
body/expression that are between after and before. Returns null if nothing
comes between.",
label = "function", javaType = "String")
public static final String RANDOM = "random(min,max)";
diff --git
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionBuilder.java
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionBuilder.java
index 10a4cb88cb58..3cd569fda828 100644
---
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionBuilder.java
+++
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/SimpleExpressionBuilder.java
@@ -913,6 +913,90 @@ public final class SimpleExpressionBuilder {
};
}
+ /**
+ * Sets the message header with the given expression value
+ */
+ public static Expression setHeaderExpression(final String name, final
String type, final String expression) {
+ return new ExpressionAdapter() {
+ private ClassResolver classResolver;
+ private Expression exp;
+
+ @Override
+ public void init(CamelContext context) {
+ classResolver = context.getClassResolver();
+ exp =
context.resolveLanguage("simple").createExpression(expression);
+ exp.init(context);
+ }
+
+ @Override
+ public Object evaluate(Exchange exchange) {
+ Class<?> clazz = Object.class;
+ if (type != null) {
+ try {
+ clazz = classResolver.resolveMandatoryClass(type);
+ } catch (ClassNotFoundException e) {
+ throw
CamelExecutionException.wrapCamelExecutionException(exchange, e);
+ }
+ }
+ Object value = exp.evaluate(exchange, clazz);
+ if (value != null) {
+ exchange.getMessage().setHeader(name, value);
+ } else {
+ exchange.getMessage().removeHeader(name);
+ }
+ // does not return anything
+ return null;
+ }
+
+ @Override
+ public String toString() {
+ return "setHeader(" + name + "," + expression + ")";
+ }
+ };
+ }
+
+ /**
+ * Sets the variable with the given expression value
+ */
+ public static Expression setVariableExpression(final String name, final
String type, final String expression) {
+ return new ExpressionAdapter() {
+ private ClassResolver classResolver;
+ private Expression exp;
+
+ @Override
+ public void init(CamelContext context) {
+ classResolver = context.getClassResolver();
+ exp =
context.resolveLanguage("simple").createExpression(expression);
+ exp.init(context);
+ }
+
+ @Override
+ public Object evaluate(Exchange exchange) {
+ Class<?> clazz = Object.class;
+ if (type != null) {
+ try {
+ clazz = classResolver.resolveMandatoryClass(type);
+ } catch (ClassNotFoundException e) {
+ throw
CamelExecutionException.wrapCamelExecutionException(exchange, e);
+ }
+ }
+ Object value = exp.evaluate(exchange, clazz);
+ if (value != null) {
+ exchange.setVariable(name, value);
+ } else {
+ exchange.removeVariable(name);
+ }
+ // does not return anything
+ return null;
+ }
+
+ @Override
+ public String toString() {
+ return "setVariable(" + name + "," + expression + ")";
+ }
+ };
+ }
+
/**
* Replaces string values from the expression
*/
diff --git
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
index 664a033675c3..edc0cce1c067 100644
---
a/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
+++
b/core/camel-core-languages/src/main/java/org/apache/camel/language/simple/ast/SimpleFunctionExpression.java
@@ -748,6 +748,61 @@ public class SimpleFunctionExpression extends
LiteralExpression {
private Expression createSimpleExpressionMisc(String function) {
String remainder;
+ // setHeader function
+ remainder = ifStartsWithReturnRemainder("setHeader(", function);
+ if (remainder != null) {
+ String values = StringHelper.beforeLast(remainder, ")");
+ if (values == null || ObjectHelper.isEmpty(values)) {
+ throw new SimpleParserException(
+ "Valid syntax: ${setHeader(name,exp)} or
${setHeader(name,type,exp)} was: " + function,
+ token.getIndex());
+ }
+ String[] tokens = StringQuoteHelper.splitSafeQuote(values, ',',
false);
+ if (tokens.length < 2 || tokens.length > 3) {
+ throw new SimpleParserException(
+ "Valid syntax: ${setHeader(name,exp)} or
${setHeader(name,type,exp)} was: " + function,
+ token.getIndex());
+ }
+ String name = tokens[0];
+ String exp;
+ String type = null;
+ if (tokens.length == 3) {
+ type = tokens[1];
+ exp = tokens[2];
+ } else {
+ exp = tokens[1];
+ }
+ type = StringHelper.removeQuotes(type);
+ return SimpleExpressionBuilder.setHeaderExpression(name, type,
exp);
+ }
+ // setVariable function
+ remainder = ifStartsWithReturnRemainder("setVariable(", function);
+ if (remainder != null) {
+ String values = StringHelper.beforeLast(remainder, ")");
+ if (values == null || ObjectHelper.isEmpty(values)) {
+ throw new SimpleParserException(
+ "Valid syntax: ${setVariable(name,exp)} or
${setVariable(name,type,exp)} was: " + function,
+ token.getIndex());
+ }
+ String[] tokens = StringQuoteHelper.splitSafeQuote(values, ',',
false);
+ if (tokens.length < 2 || tokens.length > 3) {
+ throw new SimpleParserException(
+ "Valid syntax: ${setVariable(name,exp)} or
${setVariable(name,type,exp)} was: " + function,
+ token.getIndex());
+ }
+ String name = tokens[0];
+ String exp;
+ String type = null;
+ if (tokens.length == 3) {
+ type = tokens[1];
+ exp = tokens[2];
+ } else {
+ exp = tokens[1];
+ }
+ type = StringHelper.removeQuotes(type);
+ return SimpleExpressionBuilder.setVariableExpression(name, type,
exp);
+ }
+
// replace function
remainder = ifStartsWithReturnRemainder("replace(", function);
if (remainder != null) {
@@ -2108,6 +2163,97 @@ public class SimpleFunctionExpression extends
LiteralExpression {
private String createCodeExpressionMisc(String function) {
String remainder;
+ // setHeader function
+ remainder = ifStartsWithReturnRemainder("setHeader(", function);
+ if (remainder != null) {
+ String values = StringHelper.beforeLast(remainder, ")");
+ if (values == null || ObjectHelper.isEmpty(values)) {
+ throw new SimpleParserException(
+ "Valid syntax: ${setHeader(name,exp)} or
${setHeader(name,type,exp)} was: " + function,
+ token.getIndex());
+ }
+ String[] tokens = codeSplitSafe(values, ',', true, true);
+ if (tokens.length < 2 || tokens.length > 3) {
+ throw new SimpleParserException(
+ "Valid syntax: ${setHeader(name,exp)} or
${setHeader(name,type,exp)} was: " + function,
+ token.getIndex());
+ }
+ // single quotes should be double quotes
+ for (int i = 1; i < tokens.length; i++) {
+ String s = tokens[i];
+ if (StringHelper.isSingleQuoted(s)) {
+ s = StringHelper.removeLeadingAndEndingQuotes(s);
+ s = StringQuoteHelper.doubleQuote(s);
+ tokens[i] = s;
+ }
+ }
+ // name must be in double quote as its a string value
+ String name = StringHelper.removeLeadingAndEndingQuotes(tokens[0]);
+ name = StringQuoteHelper.doubleQuote(name);
+ String exp;
+ String type = null;
+ if (tokens.length == 3) {
+ type = tokens[1];
+ exp = tokens[2];
+ } else {
+ exp = tokens[1];
+ }
+ if (type != null) {
+ type = StringHelper.removeQuotes(type);
+ type = type.trim();
+ type = appendClass(type);
+ type = type.replace('$', '.');
+ } else {
+ type = "null";
+ }
+ return "Object value = " + exp + ";\n return
setHeader(exchange, " + name + ", " + type + ", value);";
+ }
+ // setVariable function
+ remainder = ifStartsWithReturnRemainder("setVariable(", function);
+ if (remainder != null) {
+ String values = StringHelper.beforeLast(remainder, ")");
+ if (values == null || ObjectHelper.isEmpty(values)) {
+ throw new SimpleParserException(
+ "Valid syntax: ${setVariable(name,exp)} or
${setVariable(name,type,exp)} was: " + function,
+ token.getIndex());
+ }
+ String[] tokens = codeSplitSafe(values, ',', true, true);
+ if (tokens.length < 2 || tokens.length > 3) {
+ throw new SimpleParserException(
+ "Valid syntax: ${setVariable(name,exp)} or
${setVariable(name,type,exp)} was: " + function,
+ token.getIndex());
+ }
+ // single quotes should be double quotes
+ for (int i = 1; i < tokens.length; i++) {
+ String s = tokens[i];
+ if (StringHelper.isSingleQuoted(s)) {
+ s = StringHelper.removeLeadingAndEndingQuotes(s);
+ s = StringQuoteHelper.doubleQuote(s);
+ tokens[i] = s;
+ }
+ }
+ // name must be in double quote as its a string value
+ String name = StringHelper.removeLeadingAndEndingQuotes(tokens[0]);
+ name = StringQuoteHelper.doubleQuote(name);
+ String exp;
+ String type = null;
+ if (tokens.length == 3) {
+ type = tokens[1];
+ exp = tokens[2];
+ } else {
+ exp = tokens[1];
+ }
+ if (type != null) {
+ type = StringHelper.removeQuotes(type);
+ type = type.trim();
+ type = appendClass(type);
+ type = type.replace('$', '.');
+ } else {
+ type = "null";
+ }
+ return "Object value = " + exp + ";\n return
setVariable(exchange, " + name + ", " + type + ", value);";
+ }
+
// substring function
remainder = ifStartsWithReturnRemainder("substring(", function);
if (remainder != null) {
diff --git
a/core/camel-core/src/test/java/org/apache/camel/language/simple/SimpleTest.java
b/core/camel-core/src/test/java/org/apache/camel/language/simple/SimpleTest.java
index 5ba8c279c4b6..8868c78171da 100644
---
a/core/camel-core/src/test/java/org/apache/camel/language/simple/SimpleTest.java
+++
b/core/camel-core/src/test/java/org/apache/camel/language/simple/SimpleTest.java
@@ -2930,6 +2930,79 @@ public class SimpleTest extends LanguageTestSupport {
assertExpression(exchange, "${pretty(${body})}", "{\n\t\"name\":
\"Jack\",\n\t\"id\": 123\n}\n");
}
+ @Test
+ public void testSetHeader() {
+ exchange.getMessage().setBody("Hello World");
+
+ Expression expression =
context.resolveLanguage("simple").createExpression("${setHeader(foo,${body})}");
+ Object s = expression.evaluate(exchange, String.class);
+ assertNull(s);
+ assertEquals("Hello World", exchange.getMessage().getHeader("foo"));
+
+ exchange.getMessage().setBody("123");
+ expression =
context.resolveLanguage("simple").createExpression("${setHeader(bar,int,${body})}");
+ s = expression.evaluate(exchange, String.class);
+ assertNull(s);
+ assertIsInstanceOf(Integer.class,
exchange.getMessage().getHeader("bar"));
+ assertEquals(123, exchange.getMessage().getHeader("bar"));
+
+ // null should remove the variable
+ expression =
context.resolveLanguage("simple").createExpression("${setHeader(bar,${null})}");
+ s = expression.evaluate(exchange, String.class);
+ assertNull(s);
+ assertNull(exchange.getMessage().getHeader("bar"));
+ }
+
+ @Test
+ public void testSetVariable() {
+ exchange.getVariables().clear();
+ assertEquals(0, exchange.getVariables().size());
+ exchange.getMessage().setBody("Hello World");
+
+ Expression expression =
context.resolveLanguage("simple").createExpression("${setVariable(foo,${body})}");
+ Object s = expression.evaluate(exchange, String.class);
+ assertNull(s);
+ assertEquals("Hello World", exchange.getVariable("foo"));
+ assertEquals(1, exchange.getVariables().size());
+
+ exchange.getMessage().setBody("123");
+ expression =
context.resolveLanguage("simple").createExpression("${setVariable(bar,int,${body})}");
+ s = expression.evaluate(exchange, String.class);
+ assertNull(s);
+ assertIsInstanceOf(Integer.class, exchange.getVariable("bar"));
+ assertEquals(123, exchange.getVariable("bar"));
+ assertEquals(2, exchange.getVariables().size());
+
+ // null should remove the variable
+ expression =
context.resolveLanguage("simple").createExpression("${setVariable(bar,${null})}");
+ s = expression.evaluate(exchange, String.class);
+ assertNull(s);
+ assertNull(exchange.getVariable("bar"));
+ assertEquals(1, exchange.getVariables().size());
+ }
+
+ @Test
+ public void testSetVariableMapping() {
+ exchange.getVariables().clear();
+ assertEquals(0, exchange.getVariables().size());
+ exchange.getMessage().setBody("Hello World");
+
+ String map = """
+ ${setVariable(count,${body.length})}
+ Input: ${body}
+ Bytes: ${variable.count}
+ """;
+ String exp = """
+
+ Input: Hello World
+ Bytes: 11
+ """;
+
+ Expression expression =
context.resolveLanguage("simple").createExpression(map);
+ String out = expression.evaluate(exchange, String.class);
+ assertEquals(exp, out);
+ }
+
private void assertExpressionCreateNewEmpty(
String type, Class<?> expectedClass,
java.util.function.Predicate<Object> isEmptyAssertion) {
Object value = evaluateExpression("${empty(%s)}".formatted(type),
null);
