org.hbasene.index.search.HBaseIndexSearcher.java Source code

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Here is the source code for org.hbasene.index.search.HBaseIndexSearcher.java

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/**
 * Copyright 2010 Karthik Kumar
 *
 * Based off the original code by Lucandra project, (C): Jake Luciani
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.hbasene.index.search;

import java.io.IOException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.client.HTablePool;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.search.Filter;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Sort;
import org.apache.lucene.search.SortField;
import org.apache.lucene.search.TopFieldDocs;
import org.apache.lucene.search.Weight;
import org.hbasene.index.HBaseIndexReader;
import org.hbasene.index.HBaseneConstants;

/**
 * IndexSearcher
 */
public class HBaseIndexSearcher extends IndexSearcher implements HBaseneConstants {

    @SuppressWarnings("unused")
    private static final Log LOG = LogFactory.getLog(HBaseIndexSearcher.class);

    private final HTablePool tablePool;

    private final String indexName;

    public HBaseIndexSearcher(HBaseIndexReader indexReader) throws CorruptIndexException, IOException {
        super(indexReader);
        this.tablePool = indexReader.getTablePool();
        this.indexName = indexReader.getIndexName();
    }

    @Override
    public TopFieldDocs search(Weight weight, Filter filter, final int nDocs, Sort sort, boolean fillFields)
            throws IOException {
        SortField[] fields = sort.getSort();
        return (fields.length == 1 && fields[0] == SortField.FIELD_SCORE)
                ? super.search(weight, filter, nDocs, sort, fillFields)
                : doSearch(weight, filter, nDocs, sort, fillFields);

    }

    TopFieldDocs doSearch(final Weight weight, Filter filter, int nDocs, Sort sort, boolean fillFields)
            throws IOException {
        HBaseTopFieldCollector topFieldCollector = new HBaseTopFieldCollector(this.tablePool, this.indexName, nDocs,
                sort);
        search(weight, filter, topFieldCollector);
        return (TopFieldDocs) topFieldCollector.topDocs();
    }

}