com.jaeksoft.searchlib.result.collector.DocIdCollector.java Source code

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

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/**   
 * License Agreement for OpenSearchServer
 *
 * Copyright (C) 2010-2014 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;

import it.unimi.dsi.fastutil.Swapper;

import java.io.IOException;

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

public class DocIdCollector implements DocIdInterface, Swapper {

    private final int maxDoc;
    private final int[] ids;
    private int currentPos;
    private OpenBitSet bitSet;

    public DocIdCollector(final int maxDoc, final int maxSize) {
        this.maxDoc = maxDoc;
        ids = new int[maxSize];
        currentPos = 0;
        bitSet = new OpenBitSet(maxDoc);
    }

    private DocIdCollector(final DocIdCollector source) {
        this.maxDoc = source.maxDoc;
        this.ids = ArrayUtils.clone(source.ids);
        this.currentPos = source.currentPos;
        this.bitSet = (OpenBitSet) source.bitSet.clone();
    }

    @Override
    final public CollectorInterface duplicate() {
        return new DocIdCollector(this);
    }

    @Override
    final public DocIdCollector duplicate(final AbstractBaseCollector<?> base) {
        return new DocIdCollector(this);
    }

    final public void collectDoc(final int doc) throws IOException {
        ids[currentPos++] = doc;
        bitSet.fastSet(doc);
    }

    @Override
    final public void swap(final int a, final int b) {
        int v1 = ids[a];
        int v2 = ids[b];
        ids[a] = v2;
        ids[b] = v1;
    }

    @Override
    final public void doSwap(final int a, final int b) {
        doSwap(a, b);
    }

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

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

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

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

    @Override
    public <T extends CollectorInterface> T getCollector(final Class<T> collectorType) {
        return null;
    }

    @Override
    public CollectorInterface getParent() {
        return null;
    }

}