/**
* 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.crunch.types;
import com.google.common.collect.Lists;
import org.apache.crunch.Union;
import org.apache.hadoop.conf.Configuration;
import java.util.List;
public class UnionDeepCopier implements DeepCopier<Union> {
private final List<PType> elementTypes;
public UnionDeepCopier(PType... elementTypes) {
this.elementTypes = Lists.newArrayList(elementTypes);
}
@Override
public void initialize(Configuration conf) {
for (PType elementType : elementTypes) {
elementType.initialize(conf);
}
}
@Override
public Union deepCopy(Union source) {
if (source == null) {
return null;
}
int index = source.getIndex();
Object copy = elementTypes.get(index).getDetachedValue(source.getValue());
return new Union(index, copy);
}
}