parquet.pig.summary.StringSummaryData 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 java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import org.codehaus.jackson.annotate.JsonWriteNullProperties;
import parquet.pig.summary.EnumStat.EnumValueCount;
/**
* Summary data for a String
*
* @author Julien Le Dem
*
*/
@JsonWriteNullProperties(value = false)
public class StringSummaryData extends SummaryData {
private ValueStat size = new ValueStat();
private EnumStat values = new EnumStat();
public void add(String s) {
super.add(s);
size.add(s.length());
values.add(s);
}
@Override
public void merge(SummaryData other) {
super.merge(other);
StringSummaryData stringSummaryData = (StringSummaryData) other;
size.merge(stringSummaryData.size);
values.merge(stringSummaryData.values);
}
public ValueStat getSize() {
return size;
}
public void setSize(ValueStat size) {
this.size = size;
}
public Collection getValues() {
Collection values2 = values.getValues();
if (values2 == null) {
return null;
}
List list = new ArrayList(values2);
Collections.sort(list, new Comparator() {
@Override
public int compare(EnumValueCount o1, EnumValueCount o2) {
return o2.getCount() - o1.getCount();
}
});
return list;
}
public void setValues(Collection values) {
this.values.setValues(values);
}
}