/**
* 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.docidsets;
import com.linkedin.pinot.core.common.BlockMetadata;
import com.linkedin.pinot.core.common.BlockValSet;
import com.linkedin.pinot.core.operator.dociditerators.SVScanDocIdIterator;
import com.linkedin.pinot.core.operator.dociditerators.ScanBasedDocIdIterator;
import com.linkedin.pinot.core.operator.filter.predicate.PredicateEvaluator;
public class ScanBasedSingleValueDocIdSet implements FilterBlockDocIdSet {
private final BlockValSet blockValSet;
private SVScanDocIdIterator blockValSetBlockDocIdIterator;
private String datasourceName;
int startDocId;
int endDocId;
public ScanBasedSingleValueDocIdSet(String datasourceName, BlockValSet blockValSet, BlockMetadata blockMetadata, PredicateEvaluator evaluator) {
this.datasourceName = datasourceName;
this.blockValSet = blockValSet;
blockValSetBlockDocIdIterator = new SVScanDocIdIterator(datasourceName, blockValSet, blockMetadata, evaluator);
setStartDocId(blockMetadata.getStartDocId());
setEndDocId(blockMetadata.getEndDocId());
}
@Override
public int getMinDocId() {
return startDocId;
}
@Override
public int getMaxDocId() {
return endDocId;
}
/**
* After setting the startDocId, next calls will always return from >=startDocId
* @param startDocId
*/
@Override
public void setStartDocId(int startDocId) {
this.startDocId= startDocId;
blockValSetBlockDocIdIterator.setStartDocId(startDocId);
}
/**
* After setting the endDocId, next call will return Constants.EOF after currentDocId exceeds endDocId
* @param endDocId
*/
@Override
public void setEndDocId(int endDocId) {
this.endDocId = endDocId;
blockValSetBlockDocIdIterator.setEndDocId(endDocId);
}
@Override
public long getNumEntriesScannedInFilter() {
return blockValSetBlockDocIdIterator.getNumEntriesScanned();
}
@Override
public ScanBasedDocIdIterator iterator() {
return blockValSetBlockDocIdIterator;
}
@Override
public <T> T getRaw() {
throw new UnsupportedOperationException("getRaw not supported for ScanBasedDocIdSet");
}
}