org.apache.hadoop.yarn.server.records.impl.pb.VersionPBImpl.java Source code

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Here is the source code for org.apache.hadoop.yarn.server.records.impl.pb.VersionPBImpl.java

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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.
 */

package org.apache.hadoop.yarn.server.records.impl.pb;

import org.apache.hadoop.yarn.proto.YarnServerCommonProtos.VersionProto;
import org.apache.hadoop.yarn.proto.YarnServerCommonProtos.VersionProtoOrBuilder;

import org.apache.hadoop.yarn.server.records.Version;

public class VersionPBImpl extends Version {

    VersionProto proto = VersionProto.getDefaultInstance();
    VersionProto.Builder builder = null;
    boolean viaProto = false;

    public VersionPBImpl() {
        builder = VersionProto.newBuilder();
    }

    public VersionPBImpl(VersionProto proto) {
        this.proto = proto;
        viaProto = true;
    }

    public VersionProto getProto() {
        proto = viaProto ? proto : builder.build();
        viaProto = true;
        return proto;
    }

    private void maybeInitBuilder() {
        if (viaProto || builder == null) {
            builder = VersionProto.newBuilder(proto);
        }
        viaProto = false;
    }

    @Override
    public int getMajorVersion() {
        VersionProtoOrBuilder p = viaProto ? proto : builder;
        return p.getMajorVersion();
    }

    @Override
    public void setMajorVersion(int major) {
        maybeInitBuilder();
        builder.setMajorVersion(major);
    }

    @Override
    public int getMinorVersion() {
        VersionProtoOrBuilder p = viaProto ? proto : builder;
        return p.getMinorVersion();
    }

    @Override
    public void setMinorVersion(int minor) {
        maybeInitBuilder();
        builder.setMinorVersion(minor);
    }
}