/**
* 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.hive.metastore.hbase.stats;
import org.apache.hadoop.hive.metastore.api.BinaryColumnStatsData;
import org.apache.hadoop.hive.metastore.api.BooleanColumnStatsData;
import org.apache.hadoop.hive.metastore.api.ColumnStatisticsData;
import org.apache.hadoop.hive.metastore.api.ColumnStatisticsData._Fields;
import org.apache.hadoop.hive.metastore.api.ColumnStatisticsObj;
import org.apache.hadoop.hive.metastore.api.DecimalColumnStatsData;
import org.apache.hadoop.hive.metastore.api.DoubleColumnStatsData;
import org.apache.hadoop.hive.metastore.api.LongColumnStatsData;
import org.apache.hadoop.hive.metastore.api.StringColumnStatsData;
public class ColumnStatsAggregatorFactory {
private ColumnStatsAggregatorFactory() {
}
public static ColumnStatsAggregator getColumnStatsAggregator(_Fields type, int numBitVectors, boolean useDensityFunctionForNDVEstimation) {
ColumnStatsAggregator agg;
switch (type) {
case BOOLEAN_STATS:
agg = new BooleanColumnStatsAggregator();
break;
case LONG_STATS:
agg = new LongColumnStatsAggregator();
break;
case DOUBLE_STATS:
agg = new DoubleColumnStatsAggregator();
break;
case STRING_STATS:
agg = new StringColumnStatsAggregator();
break;
case BINARY_STATS:
agg = new BinaryColumnStatsAggregator();
break;
case DECIMAL_STATS:
agg = new DecimalColumnStatsAggregator();
break;
default:
throw new RuntimeException("Woh, bad. Unknown stats type " + type.toString());
}
agg.numBitVectors = numBitVectors;
agg.useDensityFunctionForNDVEstimation = useDensityFunctionForNDVEstimation;
return agg;
}
public static ColumnStatisticsObj newColumnStaticsObj(String colName, String colType, _Fields type) {
ColumnStatisticsObj cso = new ColumnStatisticsObj();
ColumnStatisticsData csd = new ColumnStatisticsData();
cso.setColName(colName);
cso.setColType(colType);
switch (type) {
case BOOLEAN_STATS:
csd.setBooleanStats(new BooleanColumnStatsData());
break;
case LONG_STATS:
csd.setLongStats(new LongColumnStatsData());
break;
case DOUBLE_STATS:
csd.setDoubleStats(new DoubleColumnStatsData());
break;
case STRING_STATS:
csd.setStringStats(new StringColumnStatsData());
break;
case BINARY_STATS:
csd.setBinaryStats(new BinaryColumnStatsData());
break;
case DECIMAL_STATS:
csd.setDecimalStats(new DecimalColumnStatsData());
break;
default:
throw new RuntimeException("Woh, bad. Unknown stats type!");
}
cso.setStatsData(csd);
return cso;
}
}