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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.predicate.index;
/**
* Wraps a posting stream of IntervalWithBounds objects (for collapsed
* fixed tree leaf nodes) into a PostingList.
*
* @author Magnar Nedland
* @author bjorncs
*/
public class BoundsPostingList extends MultiIntervalPostingList {
private final int valueDiff;
private final IntervalWithBounds intervalWithBounds = new IntervalWithBounds();
private final PredicateIntervalStore store;
private int currentInterval;
/**
* @param valueDiff Difference from the collapsed leaf node's actual value.
*/
public BoundsPostingList(PredicateIntervalStore store, int[] docIds, int[] dataRefs, long subquery, int valueDiff) {
super(docIds, dataRefs, subquery);
this.valueDiff = valueDiff;
this.store = store;
}
@Override
protected boolean prepareIntervals(int dataRef) {
intervalWithBounds.setIntervalArray(store.get(dataRef), 0);
return nextInterval();
}
@Override
public boolean nextInterval() {
while (intervalWithBounds.hasValue()) {
if (intervalWithBounds.contains(valueDiff)) {
this.currentInterval = intervalWithBounds.getInterval();
intervalWithBounds.nextValue();
return true;
}
intervalWithBounds.nextValue();
}
return false;
}
@Override
public int getInterval() {
return currentInterval;
}
}
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