/**
* Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
*
* 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 com.linkedin.pinot.core.util.debug;
import com.linkedin.pinot.core.common.Block;
import com.linkedin.pinot.core.common.BlockDocIdIterator;
import com.linkedin.pinot.core.common.BlockDocIdSet;
import com.linkedin.pinot.core.common.Constants;
import com.linkedin.pinot.core.common.Operator;
/**
* Utility to count the number of docs in a BlockDocIdSet or an Operator
*/
public class OperatorSize {
public static int size(Operator operator) {
Block block;
int count = 0;
operator.open();
while((block = operator.nextBlock()) != null) {
BlockDocIdSet docIdSet = block.getBlockDocIdSet();
count += size(docIdSet);
}
operator.close();
System.out.println("count = " + count);
return count;
}
public static int size(BlockDocIdSet docIdSet) {
int count = 0;
BlockDocIdIterator iterator = docIdSet.iterator();
while(iterator.next() != Constants.EOF) {
count++;
}
return count;
}
}