/*
* Copyright (c) 2011 LinkedIn, Inc
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.flaptor.indextank.index.lsi;
import java.util.concurrent.BlockingDeque;
import org.apache.log4j.Logger;
import com.flaptor.indextank.index.DocId;
import com.flaptor.indextank.index.QueryMatcher;
import com.flaptor.indextank.index.TopMatches;
import com.flaptor.indextank.query.Query;
import com.flaptor.util.Execute;
import com.google.common.base.Preconditions;
import com.google.common.base.Predicate;
class LsiSearcher implements QueryMatcher {
@SuppressWarnings("unused")
private static final Logger logger = Logger.getLogger(Execute.whoAmI());
private LsiIndex index;
LsiSearcher(LsiIndex index) {
Preconditions.checkNotNull(index);
this.index = index;
}
@Override
public TopMatches findMatches(Query query, Predicate<DocId> idFilter, int limit, int scoringFunctionIndex) throws InterruptedException {
BlockingDeque<QueryMatcher> queue = index.getQueryMatcherPool();
QueryMatcher matcher = queue.takeFirst();
try {
return matcher.findMatches(query, idFilter, limit, scoringFunctionIndex);
} finally {
queue.putFirst(matcher);
}
}
@Override
public TopMatches findMatches(Query query, int limit, int scoringFunctionIndex) throws InterruptedException {
BlockingDeque<QueryMatcher> queue = index.getQueryMatcherPool();
QueryMatcher matcher = queue.takeFirst();
try {
return matcher.findMatches(query, limit, scoringFunctionIndex);
} finally {
queue.putFirst(matcher);
}
}
@Override
public boolean hasChanges(DocId docid) throws InterruptedException {
BlockingDeque<QueryMatcher> queue = index.getQueryMatcherPool();
QueryMatcher matcher = queue.takeFirst();
try {
return matcher.hasChanges(docid);
} finally {
queue.putFirst(matcher);
}
}
@Override
public int countMatches(Query query) throws InterruptedException {
BlockingDeque<QueryMatcher> queue = index.getQueryMatcherPool();
QueryMatcher matcher = queue.takeFirst();
try {
return matcher.countMatches(query);
} finally {
queue.putFirst(matcher);
}
}
@Override
public int countMatches(Query query, Predicate<DocId> idFilter) throws InterruptedException {
BlockingDeque<QueryMatcher> queue = index.getQueryMatcherPool();
QueryMatcher matcher = queue.takeFirst();
try {
return matcher.countMatches(query, idFilter);
} finally {
queue.putFirst(matcher);
}
}
}