/*
* 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.pig.impl.io;
import org.apache.pig.data.BagFactory;
import org.apache.pig.data.DataBag;
/**
*
*/
public class NullableBag extends PigNullableWritable {
private BagFactory mFactory = null;
public NullableBag() {
if (mFactory == null) {
mFactory = BagFactory.getInstance();
}
mValue = mFactory.newDefaultBag();
}
/**
* @param b
*/
public NullableBag(DataBag b) {
mValue = b;
}
public Object getValueAsPigType() {
return isNull() ? null : (DataBag)mValue;
}
}