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65 lines (56 loc) · 1.8 KB
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// 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 compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.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.
// This file is copied from
// https://github.com/apache/impala/blob/branch-2.9.0/fe/src/main/java/org/apache/impala/Id.java
// and modified by Doris
package org.apache.doris.common;
import java.util.ArrayList;
/**
* Integer ids that cannot accidentally be compared with ints.
*/
public class Id<IdType extends Id<IdType>> {
protected final int id;
public Id(int id) {
this.id = id;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
Id<?> id1 = (Id<?>) obj;
return id == id1.id;
}
@Override
public int hashCode() {
return id;
}
public int asInt() {
return id;
}
public ArrayList<IdType> asList() {
ArrayList<IdType> list = new ArrayList<>();
list.add((IdType) this);
return list;
}
public String toString() {
return Integer.toString(id);
}
}