parquet.pig.summary.BagSummaryData Maven / Gradle / Ivy
/**
* Copyright 2012 Twitter, Inc.
*
* Licensed 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 parquet.pig.summary;
import org.apache.pig.data.DataBag;
import org.apache.pig.data.Tuple;
import org.apache.pig.impl.logicalLayer.schema.Schema;
import org.apache.pig.impl.logicalLayer.schema.Schema.FieldSchema;
/**
* summary data for a bag
*
* @author Julien Le Dem
*
*/
public class BagSummaryData extends SummaryData {
private ValueStat size = new ValueStat();
private FieldSummaryData content;
/**
* add a bag to the summary data
*
* @param bag
*/
public void add(Schema schema, DataBag bag) {
super.add(bag);
size.add(bag.size());
FieldSchema field = getField(schema, 0);
if (bag.size() > 0 && content == null) {
content = new FieldSummaryData();
content.setName(getName(field));
}
for (Tuple tuple : bag) {
content.add(getSchema(field), tuple);
}
}
@Override
public void merge(SummaryData other) {
super.merge(other);
BagSummaryData otherBagSummary = (BagSummaryData) other;
size.merge(otherBagSummary.size);
content = merge(content, otherBagSummary.content);
}
public FieldSummaryData getContent() {
return content;
}
public void setContent(FieldSummaryData content) {
this.content = content;
}
public ValueStat getSize() {
return size;
}
public void setSize(ValueStat size) {
this.size = size;
}
}