/**
* This software is licensed to you under the Apache License, Version 2.0 (the
* "Apache License").
*
* LinkedIn's contributions are made under the Apache License. If you contribute
* to the Software, the contributions will be deemed to have been made under the
* Apache License, unless you expressly indicate otherwise. Please do not make any
* contributions that would be inconsistent with the Apache License.
*
* You may obtain a copy of the Apache License at http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, this software
* distributed under the Apache License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the Apache
* License for the specific language governing permissions and limitations for the
* software governed under the Apache License.
*
* © 2012 LinkedIn Corp. All Rights Reserved.
*/
package com.senseidb.indexing.activity.facet;
import java.io.IOException;
import org.apache.lucene.search.DocIdSetIterator;
/**
* Performs range iteration over activity fields
* @author vzhabiuk
*
*/
public class ActivityRangeIntFilterIterator extends DocIdSetIterator {
private int _doc;
protected final int[] fieldValues;
private final int start;
private final int end;
private final int arrLength;
private int[] indexes;
public ActivityRangeIntFilterIterator(int[] fieldValues, int[] indexes,
int start, int end) {
this.fieldValues = fieldValues;
this.start = start;
this.end = end;
this.indexes = indexes;
arrLength = indexes.length;
_doc = -1;
}
@Override
final public int docID() {
return _doc;
}
@Override
public int nextDoc() throws IOException {
while (++_doc < arrLength ) {
if (indexes[_doc] == -1) {
continue;
}
int value = fieldValues[indexes[_doc]];
if (value >= start && value < end && value != Integer.MIN_VALUE) {
return _doc;
}
}
return NO_MORE_DOCS;
}
@Override
public int advance(int id) throws IOException {
_doc = id - 1;
return nextDoc();
}
}