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- Fixed bug 20290 

http://nagoya.apache.org/bugzilla/show_bug.cgi?id=20290
- Added @version.


git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@150033 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Otis Gospodnetic 2003-09-16 12:52:10 +00:00
parent 2310d71e07
commit 2357f0c106
1 changed files with 7 additions and 2 deletions
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9
src/java/org/apache/lucene/search/QueryFilter.java
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@ -68,10 +68,12 @@ import org.apache.lucene.index.IndexReader;
* QueryFilter that matches, e.g., only documents modified within the last * QueryFilter that matches, e.g., only documents modified within the last
* week. The QueryFilter and RangeQuery would only need to be reconstructed * week. The QueryFilter and RangeQuery would only need to be reconstructed
* once per day. * once per day.
*
* @version $Id$
*/ */
public class QueryFilter extends Filter { public class QueryFilter extends Filter {
private Query query; private Query query;
private transient WeakHashMap cache = new WeakHashMap(); private transient WeakHashMap cache = null;
/** Constructs a filter which only matches documents matching /** Constructs a filter which only matches documents matching
* <code>query</code>. * <code>query</code>.
@ -82,6 +84,10 @@ public class QueryFilter extends Filter {
public BitSet bits(IndexReader reader) throws IOException { public BitSet bits(IndexReader reader) throws IOException {
if (cache == null) {
cache = new WeakHashMap();
}
synchronized (cache) { // check cache synchronized (cache) { // check cache
BitSet cached = (BitSet) cache.get(reader); BitSet cached = (BitSet) cache.get(reader);
if (cached != null) { if (cached != null) {
@ -97,7 +103,6 @@ public class QueryFilter extends Filter {
} }
}); });
synchronized (cache) { // update cache synchronized (cache) { // update cache
cache.put(reader, bits); cache.put(reader, bits);
} }