com.hazelcast.org.apache.calcite.sql.SqlTypeConstructorFunction 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;
import com.hazelcast.org.apache.calcite.rel.type.RelDataType;
import com.hazelcast.org.apache.calcite.sql.type.ExplicitOperandTypeChecker;
/**
* Type Constructor function.
*
* Created by the parser, then it is rewritten to proper SqlFunction by
* the validator to a function defined in a Calcite schema.
*/
public class SqlTypeConstructorFunction extends SqlFunction {
private RelDataType type;
/**
* Creates a constructor function for types.
*
* @param identifier possibly qualified identifier for function
* @param type type of data
*/
public SqlTypeConstructorFunction(SqlIdentifier identifier,
RelDataType type) {
super(identifier,
null,
null,
new ExplicitOperandTypeChecker(type),
null,
SqlFunctionCategory.SYSTEM);
this.type = type;
}
@Override public RelDataType inferReturnType(SqlOperatorBinding opBinding) {
return type;
}
}