com.hazelcast.org.apache.calcite.sql.type.CursorReturnTypeInference 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.type;
import com.hazelcast.org.apache.calcite.rel.type.RelDataType;
import com.hazelcast.org.apache.calcite.sql.SqlOperatorBinding;
/**
* Returns the rowtype of a cursor of the operand at a particular 0-based
* ordinal position.
*
* @see OrdinalReturnTypeInference
*/
public class CursorReturnTypeInference implements SqlReturnTypeInference {
//~ Instance fields --------------------------------------------------------
private final int ordinal;
//~ Constructors -----------------------------------------------------------
public CursorReturnTypeInference(int ordinal) {
this.ordinal = ordinal;
}
//~ Methods ----------------------------------------------------------------
public RelDataType inferReturnType(
SqlOperatorBinding opBinding) {
return opBinding.getCursorOperand(ordinal);
}
}