com.hazelcast.org.apache.calcite.sql.fun.SqlJsonValueExpressionOperator Maven / Gradle / Ivy
/*
* 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 com.hazelcast.com.liance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.com.hazelcast.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 com.hazelcast.org.apache.calcite.sql.fun;
import com.hazelcast.org.apache.calcite.sql.SqlKind;
import com.hazelcast.org.apache.calcite.sql.SqlPostfixOperator;
import com.hazelcast.org.apache.calcite.sql.type.OperandTypes;
import com.hazelcast.org.apache.calcite.sql.type.ReturnTypes;
import com.hazelcast.org.apache.calcite.sql.type.SqlTypeName;
import com.hazelcast.org.apache.calcite.sql.type.SqlTypeTransforms;
/**
* The JSON value expression operator that indicates that the value expression
* should be parsed as JSON.
*/
public class SqlJsonValueExpressionOperator extends SqlPostfixOperator {
public SqlJsonValueExpressionOperator() {
super("FORMAT JSON", SqlKind.JSON_VALUE_EXPRESSION, 28,
ReturnTypes.cascade(ReturnTypes.explicit(SqlTypeName.ANY),
SqlTypeTransforms.TO_NULLABLE), null, OperandTypes.CHARACTER);
}
}