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davsclaus pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/camel.git
commit 177c25f36b9d5f3eeb8f324e19ccdc29431be3db
Author: Claus Ibsen <claus.ib...@gmail.com>
AuthorDate: Wed Aug 18 14:06:48 2021 +0200
Polish and cleanup documentation
---
.../ROOT/pages/using-propertyplaceholder.adoc | 39 +++++++++++++---------
1 file changed, 24 insertions(+), 15 deletions(-)
diff --git a/docs/user-manual/modules/ROOT/pages/using-propertyplaceholder.adoc
b/docs/user-manual/modules/ROOT/pages/using-propertyplaceholder.adoc
index 5ddff63..9957100 100644
--- a/docs/user-manual/modules/ROOT/pages/using-propertyplaceholder.adoc
+++ b/docs/user-manual/modules/ROOT/pages/using-propertyplaceholder.adoc
@@ -229,6 +229,8 @@ xref:producertemplate.adoc[ProducerTemplate] for example:
template.sendBody("{{cool.start}}", "Hello World");
----
+=== Using property placeholders with consumer template
+
This can also be done when using xref:consumertemplate.adoc[ConsumerTemplate],
such as:
[source,java]
@@ -236,36 +238,43 @@ This can also be done when using
xref:consumertemplate.adoc[ConsumerTemplate], s
Object body = template.receiveBody("{{cool.start}}");
----
-
-
-[[UsingPropertyPlaceholder-Examplewithlanguage]]
-== Example with xref:components:languages:simple-language.adoc[Simple] language
+== Using property placeholders with simple language
The xref:components:languages:simple-language.adoc[Simple] language now also
support using property
placeholders, for example in the route below:
+[source,properties]
+----
+cheese.quote = Camel rocks
+----
+
+And in the route you can use the placeholder with the usual syntax `{{key}}`
as shown:
[source,java]
----
-// properties
-cheese.quote=Camel rocks
+from("direct:start")
+ .transform().simple("Hi ${body} do you think {{cheese.quote}}?");
+----
-// route from("direct:start")
- .transform().simple("Hi ${body} do you think ${properties:cheese.quote}?");
+What happens is that Camel will resolve the placeholder during initialization
of the route,
+so the route becomes:
+
+[source,java]
+----
+from("direct:start")
+ .transform().simple("Hi ${body} do you think Camel rocks?");
----
-You can also specify the location in the
xref:components:languages:simple-language.adoc[Simple]
-language for example:
+So the simple language would not have any property placeholders anymore.
+This is the most common way.
+However, if the placeholder must be resolved by simple language itself,
+then you can use its `${properties}` function:
[source,java]
----
-// bar.properties
-bar.quote=Beer tastes good
-
-// route
from("direct:start")
- .transform().simple("Hi ${body}.
${properties:com/mycompany/bar.properties:bar.quote}.");
+ .transform().simple("Hi ${body} do you think ${properties:cheese.quote}?");
----
