/**
* 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.operator.dociditerators;
import org.roaringbitmap.IntIterator;
import com.linkedin.pinot.core.common.BlockDocIdIterator;
import com.linkedin.pinot.core.common.Constants;
public class RangelessBitmapDocIdIterator implements BlockDocIdIterator {
private IntIterator iterator;
int currentDocId = -1;
public RangelessBitmapDocIdIterator(IntIterator iterator) {
this.iterator = iterator;
}
@Override
public int currentDocId() {
return currentDocId;
}
@Override
public int next() {
// Empty?
if (currentDocId == Constants.EOF || !iterator.hasNext()) {
currentDocId = Constants.EOF;
return Constants.EOF;
}
currentDocId = iterator.next();
return currentDocId;
}
@Override
public int advance(int targetDocId) {
if (targetDocId < currentDocId) {
throw new IllegalArgumentException("Trying to move backwards to docId " + targetDocId +
", current position " + currentDocId);
}
if (currentDocId == targetDocId) {
return currentDocId;
} else {
int curr = next();
while(curr < targetDocId && curr != Constants.EOF) {
curr = next();
}
return curr;
}
}
}