com.hazelcast.org.apache.calcite.sql.type.ExplicitOperandTypeInference 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.SqlCallBinding;
import com.hazelcast.com.google.com.hazelcast.com.on.collect.ImmutableList;
/**
* ExplicitOperandTypeInferences implements {@link SqlOperandTypeInference} by
* explicitly supplying a type for each parameter.
*/
public class ExplicitOperandTypeInference implements SqlOperandTypeInference {
//~ Instance fields --------------------------------------------------------
private final ImmutableList paramTypes;
//~ Constructors -----------------------------------------------------------
/** Use
* {@link com.hazelcast.org.apache.calcite.sql.type.InferTypes#explicit(java.util.List)}. */
ExplicitOperandTypeInference(ImmutableList paramTypes) {
this.paramTypes = paramTypes;
}
//~ Methods ----------------------------------------------------------------
public void inferOperandTypes(
SqlCallBinding callBinding,
RelDataType returnType,
RelDataType[] operandTypes) {
if (operandTypes.length != paramTypes.size()) {
// This call does not match the inference strategy.
// It's likely that we're just about to give a validation error.
// Don't make a fuss, just give up.
return;
}
paramTypes.toArray(operandTypes);
}
}