com.jaeksoft.searchlib.result.collector.docsethit.DocIdBufferCollector.java Source code

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Here is the source code for com.jaeksoft.searchlib.result.collector.docsethit.DocIdBufferCollector.java

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/**   
 * License Agreement for OpenSearchServer
 *
 * Copyright (C) 2014 Emmanuel Keller / Jaeksoft
 * 
 * http://www.open-search-server.com
 * 
 * This file is part of OpenSearchServer.
 *
 * OpenSearchServer is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 * OpenSearchServer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with OpenSearchServer. 
 *  If not, see <http://www.gnu.org/licenses/>.
 **/

package com.jaeksoft.searchlib.result.collector.docsethit;

import java.io.IOException;

import org.apache.commons.lang.ArrayUtils;
import org.apache.lucene.util.OpenBitSet;

import com.jaeksoft.searchlib.result.collector.AbstractBaseCollector;
import com.jaeksoft.searchlib.result.collector.AbstractExtendsCollector;
import com.jaeksoft.searchlib.result.collector.CollectorInterface;
import com.jaeksoft.searchlib.result.collector.DocIdInterface;
import com.jaeksoft.searchlib.util.array.IntBufferedArray;

public class DocIdBufferCollector
        extends AbstractExtendsCollector<DocSetHitCollectorInterface, DocSetHitBaseCollector>
        implements DocSetHitCollectorInterface, DocIdInterface {

    final private IntBufferedArray idsBuffer;
    private int[] ids;
    private OpenBitSet bitSet;

    public DocIdBufferCollector(final DocSetHitBaseCollector base) {
        super(base);
        bitSet = new OpenBitSet(base.getMaxDoc());
        idsBuffer = new IntBufferedArray(base.getMaxDoc());
        ids = null;
    }

    private DocIdBufferCollector(final DocSetHitBaseCollector base, final DocIdBufferCollector source) {
        super(base);
        this.idsBuffer = null;
        this.ids = ArrayUtils.clone(source.ids);
        this.bitSet = (OpenBitSet) source.bitSet.clone();
    }

    @Override
    public CollectorInterface duplicate(final AbstractBaseCollector<?> base) {
        parent.duplicate(base);
        return new DocIdBufferCollector((DocSetHitBaseCollector) base, this);
    }

    @Override
    final public void collectDoc(final int docId) throws IOException {
        parent.collectDoc(docId);
        idsBuffer.add(docId);
        bitSet.fastSet(docId);
    }

    @Override
    final public void doSwap(final int a, final int b) {
        parent.doSwap(a, b);
        int i1 = ids[a];
        int i2 = ids[b];
        ids[a] = i2;
        ids[b] = i1;
    }

    @Override
    final public void endCollection() {
        parent.endCollection();
        ids = idsBuffer.getFinalArray();
    }

    @Override
    final public int[] getIds() {
        return ids;
    }

    @Override
    final public OpenBitSet getBitSet() {
        return bitSet;
    }

    @Override
    final public int getMaxDoc() {
        return base.getMaxDoc();
    }

    @Override
    final public int getSize() {
        return base.getSize();
    }

}