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LUCENE-8196: Check for a null input in LowpassIntervalsSource

This commit is contained in:
Alan Woodward 2018-04-04 09:37:32 +01:00
parent 34b83ed869
commit 7117b68db6
2 changed files with 5 additions and 1 deletions
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3
lucene/sandbox/src/java/org/apache/lucene/search/intervals/IntervalFilter.java
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@ -18,6 +18,7 @@
package org.apache.lucene.search.intervals; package org.apache.lucene.search.intervals;
import java.io.IOException; import java.io.IOException;
import java.util.Objects;
/** /**
* Wraps an {@link IntervalIterator} and passes through those intervals that match the {@link #accept()} function * Wraps an {@link IntervalIterator} and passes through those intervals that match the {@link #accept()} function
@ -30,7 +31,7 @@ public abstract class IntervalFilter extends IntervalIterator {
* Create a new filter * Create a new filter
*/ */
public IntervalFilter(IntervalIterator in) { public IntervalFilter(IntervalIterator in) {
this.in = in; this.in = Objects.requireNonNull(in);
} }
@Override @Override

3
lucene/sandbox/src/java/org/apache/lucene/search/intervals/LowpassIntervalsSource.java
View File

@ -56,6 +56,9 @@ class LowpassIntervalsSource extends IntervalsSource {
@Override @Override
public IntervalIterator intervals(String field, LeafReaderContext ctx) throws IOException { public IntervalIterator intervals(String field, LeafReaderContext ctx) throws IOException {
IntervalIterator i = in.intervals(field, ctx); IntervalIterator i = in.intervals(field, ctx);
if (i == null) {
return null;
}
return new IntervalFilter(i) { return new IntervalFilter(i) {
@Override @Override
protected boolean accept() { protected boolean accept() {