diff options
Diffstat (limited to 'predicate-search/src/main/java/com/yahoo/search/predicate/index/IntervalPostingList.java')
-rw-r--r-- | predicate-search/src/main/java/com/yahoo/search/predicate/index/IntervalPostingList.java | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/predicate-search/src/main/java/com/yahoo/search/predicate/index/IntervalPostingList.java b/predicate-search/src/main/java/com/yahoo/search/predicate/index/IntervalPostingList.java new file mode 100644 index 00000000000..40e8bf39c98 --- /dev/null +++ b/predicate-search/src/main/java/com/yahoo/search/predicate/index/IntervalPostingList.java @@ -0,0 +1,42 @@ +// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root. +package com.yahoo.search.predicate.index; + +/** + * Implementation of PostingList for regular features that store + * their intervals and nothing else. + * @author <a href="mailto:magnarn@yahoo-inc.com">Magnar Nedland</a> + * @author bjorncs + */ +public class IntervalPostingList extends MultiIntervalPostingList { + private final PredicateIntervalStore store; + private int[] currentIntervals; + private int currentIntervalIndex; + private int currentInterval; + + public IntervalPostingList(PredicateIntervalStore store, int[] docIds, int[] dataRefs, long subquery) { + super(docIds, dataRefs, subquery); + this.store = store; + } + + @Override + protected boolean prepareIntervals(int dataRef) { + currentIntervals = store.get(dataRef); + currentIntervalIndex = 1; + currentInterval = currentIntervals[0]; + return true; + } + + @Override + public boolean nextInterval() { + if (currentIntervalIndex < currentIntervals.length) { + this.currentInterval = currentIntervals[currentIntervalIndex++]; + return true; + } + return false; + } + + @Override + public int getInterval() { + return currentInterval; + } +} |