org.apache.lucene.codecs.LiveDocsFormat.java Source code

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Here is the source code for org.apache.lucene.codecs.LiveDocsFormat.java

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/*
 * 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.apache.lucene.codecs;

import java.io.IOException;
import java.util.Collection;

import org.apache.lucene.index.SegmentCommitInfo;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.IOContext;
import org.apache.lucene.util.Bits;

/** Format for live/deleted documents
 * @lucene.experimental */
public abstract class LiveDocsFormat {

    /** Sole constructor. (For invocation by subclass 
     *  constructors, typically implicit.) */
    protected LiveDocsFormat() {
    }

    /** Read live docs bits. */
    public abstract Bits readLiveDocs(Directory dir, SegmentCommitInfo info, IOContext context) throws IOException;

    /** Persist live docs bits.  Use {@link
     *  SegmentCommitInfo#getNextDelGen} to determine the
     *  generation of the deletes file you should write to. */
    public abstract void writeLiveDocs(Bits bits, Directory dir, SegmentCommitInfo info, int newDelCount,
            IOContext context) throws IOException;

    /** Records all files in use by this {@link SegmentCommitInfo} into the files argument. */
    public abstract void files(SegmentCommitInfo info, Collection<String> files) throws IOException;
}