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new eb9d68a6406 [opt](Nereids) add json literal for constant folding
(#24878)
eb9d68a6406 is described below
commit eb9d68a6406f060ca820132b5d3a21b407406c1a
Author: morrySnow <101034200+morrys...@users.noreply.github.com>
AuthorDate: Tue Sep 26 11:37:53 2023 +0800
[opt](Nereids) add json literal for constant folding (#24878)
---
.../trees/expressions/literal/JsonLiteral.java | 72 ++++++++++++++++++++++
.../nereids/trees/expressions/literal/Literal.java | 4 ++
2 files changed, 76 insertions(+)
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/JsonLiteral.java
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/JsonLiteral.java
new file mode 100644
index 00000000000..779be0ca541
--- /dev/null
+++
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/JsonLiteral.java
@@ -0,0 +1,72 @@
+// 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.doris.nereids.trees.expressions.literal;
+
+import org.apache.doris.analysis.LiteralExpr;
+import org.apache.doris.nereids.exceptions.AnalysisException;
+import org.apache.doris.nereids.types.JsonType;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+/**
+ * literal for json type.
+ */
+public class JsonLiteral extends Literal {
+
+ private static final ObjectMapper MAPPER = new ObjectMapper();
+
+ private final JsonNode jsonNode;
+ private final String value;
+
+ /**
+ * constructor, will check value.
+ */
+ public JsonLiteral(String value) {
+ super(JsonType.INSTANCE);
+ try {
+ jsonNode = MAPPER.readTree(value);
+ } catch (JsonProcessingException e) {
+ throw new AnalysisException("Invalid jsonb literal: '" + value +
"'. because " + e.getMessage());
+ }
+ if (jsonNode.isMissingNode()) {
+ throw new AnalysisException("Invalid jsonb literal: ''");
+ }
+ this.value = jsonNode.toString();
+ }
+
+ @Override
+ public String getStringValue() {
+ return value;
+ }
+
+ @Override
+ public JsonNode getValue() {
+ return jsonNode;
+ }
+
+ @Override
+ public LiteralExpr toLegacyLiteral() {
+ try {
+ return new org.apache.doris.analysis.JsonLiteral(value);
+ } catch (Throwable t) {
+ throw new AnalysisException(t.getMessage(), t);
+ }
+ }
+}
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/Literal.java
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/Literal.java
index 605f236ef7a..dbd8382aa90 100644
---
a/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/Literal.java
+++
b/fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/literal/Literal.java
@@ -234,6 +234,8 @@ public abstract class Literal extends Expression implements
LeafExpression, Comp
return new DateV2Literal(desc);
} else if (targetType.isDateTimeV2Type()) {
return new DateTimeV2Literal((DateTimeV2Type) targetType, desc);
+ } else if (targetType.isJsonType()) {
+ return new JsonLiteral(desc);
}
throw new AnalysisException("cannot cast " + desc + " from type " +
this.dataType + " to type " + targetType);
}
@@ -277,6 +279,8 @@ public abstract class Literal extends Expression implements
LeafExpression, Comp
return new DateTimeLiteral(stringValue);
} else if (dataType.isDateTimeV2Type()) {
return new DateTimeV2Literal(stringValue);
+ } else if (dataType.isJsonType()) {
+ return new JsonLiteral(stringValue);
} else {
throw new AnalysisException("Unsupported convert the " +
literalExpr.getType()
+ " of legacy literal to nereids literal");
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