/*
* Hibernate Search, full-text search for your domain model
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.search.test.filter.deprecated;
import java.io.IOException;
import java.io.Serializable;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.LeafReader;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.lucene.index.SegmentReader;
import org.apache.lucene.search.DocIdSet;
import org.apache.lucene.search.Filter;
import org.apache.lucene.util.Bits;
import org.hibernate.search.exception.SearchException;
import org.hibernate.search.filter.impl.AndDocIdSet;
/**
* @author Emmanuel Bernard
* @author Sanne Grinovero
*/
public class ExcludeAllFilter extends Filter implements Serializable {
// ugly but useful for test purposes
private static final Map<IndexReader,IndexReader> invokedOnReaders = new ConcurrentHashMap<IndexReader,IndexReader>();
@Override
public DocIdSet getDocIdSet(LeafReaderContext context, Bits acceptDocs) throws IOException {
LeafReader reader = context.reader();
verifyItsAReadOnlySegmentReader( reader );
final IndexReader previousValue = invokedOnReaders.put( reader, reader );
if ( previousValue != null ) {
throw new IllegalStateException( "Called twice" );
}
return AndDocIdSet.EMPTY_DOCIDSET;
}
public static void verifyItsAReadOnlySegmentReader(IndexReader reader) {
if ( ! ( reader instanceof SegmentReader ) ) {
throw new SearchException( "test failed: we should receive subreaders" );
}
}
@Override
public String toString(String field) {
return "";
}
}