com.hazelcast.org.apache.calcite.rel.type.RelDataTypeFieldImpl 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.rel.type;
import com.hazelcast.org.apache.calcite.sql.type.SqlTypeName;
import java.io.Serializable;
/**
* Default implementation of {@link RelDataTypeField}.
*/
public class RelDataTypeFieldImpl implements RelDataTypeField, Serializable {
//~ Instance fields --------------------------------------------------------
private final RelDataType type;
private final String name;
private final int index;
//~ Constructors -----------------------------------------------------------
/**
* Creates a RelDataTypeFieldImpl.
*/
public RelDataTypeFieldImpl(
String name,
int index,
RelDataType type) {
assert name != null;
assert type != null;
this.name = name;
this.index = index;
this.type = type;
}
//~ Methods ----------------------------------------------------------------
@Override public int hashCode() {
return index
^ name.hashCode()
^ type.hashCode();
}
@Override public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof RelDataTypeFieldImpl)) {
return false;
}
RelDataTypeFieldImpl that = (RelDataTypeFieldImpl) obj;
return this.index == that.index
&& this.name.equals(that.name)
&& this.type.equals(that.type);
}
// implement RelDataTypeField
public String getName() {
return name;
}
// implement RelDataTypeField
public int getIndex() {
return index;
}
// implement RelDataTypeField
public RelDataType getType() {
return type;
}
// implement Map.Entry
public final String getKey() {
return getName();
}
// implement Map.Entry
public final RelDataType getValue() {
return getType();
}
// implement Map.Entry
public RelDataType setValue(RelDataType value) {
throw new UnsupportedOperationException();
}
// for debugging
public String toString() {
return "#" + index + ": " + name + " " + type;
}
public boolean isDynamicStar() {
return type.getSqlTypeName() == SqlTypeName.DYNAMIC_STAR;
}
}