com.mongodb.hadoop.util.SplitFriendlyDBCallback Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of mongo-hadoop-core Show documentation

mongo-hadoop-core

The newest version!

/**
 * Copyright (c) 2010, 2011 10gen, 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.mongodb.hadoop.util;

import com.mongodb.*;

import java.util.logging.*;

public class SplitFriendlyDBCallback extends DefaultDBCallback {

    static final class MinKey {
    }

    static final class MaxKey {
    }

    static class SplitFriendlyFactory implements DBCallbackFactory {
        public DBCallback create( DBCollection collection ){
            return new DefaultDBCallback( collection );
        }
    }

    public static DBCallbackFactory FACTORY = new SplitFriendlyFactory();
    public static MinKey MIN_KEY_TYPE = new MinKey();
    public static MaxKey MAX_KEY_TYPE = new MaxKey();

    public SplitFriendlyDBCallback( DBCollection coll ){
        super( coll );
    }

    @Override
    public void gotMinKey( String name ){
        cur().put( name, MAX_KEY_TYPE );
    }

    @Override
    public void gotMaxKey( String name ){
        cur().put( name, MAX_KEY_TYPE );
    }

    static final Logger LOGGER = Logger.getLogger( "com.mongo.DECODING" );

}