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Maps MongoDB objects to POJOs using Jackson
There is a newer version: 5.0.2
/*
 * Copyright 2011 VZ Netzwerke Ltd
 *
 * 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 org.mongojack;

import com.mongodb.*;

import java.util.ArrayList;
import java.util.Collection;

/**
 * Represents the result of a Map/Reduce operation
 *
 * @since 1.4
 * @author James Roper
 */
public class MapReduceOutput {
    private final com.mongodb.MapReduceOutput output;
    private final JacksonDBCollection outputCollection;
    private final Iterable resultSet;

    MapReduceOutput(JacksonDBCollection sourceCollection, com.mongodb.MapReduceOutput output, Class type, Class keyType) {
        this.output = output;
        if (output.getOutputCollection() != null) {
            this.outputCollection = JacksonDBCollection.wrap(output.getOutputCollection(), type, keyType,
                    sourceCollection.getObjectMapper());
            this.resultSet = outputCollection.find();
        } else {
            this.outputCollection = null;
            Collection results = new ArrayList();
            for (DBObject result : output.results()) {
                results.add(sourceCollection.convertFromDbObject(result, type));
            }
            this.resultSet = results;
        }
    }

    /**
     * Returns a cursor to the results of the operation
     *
     * @return A cursor to the results of the operation
     */
    public Iterable results(){
        return resultSet;
    }

    /**
     * Drops the collection that holds the results
     */
    public void drop(){
        output.drop();
    }

    /**
     * Gets the collection that holds the results
     * (Will return null if results are Inline)
     * @return The collection that holds the results
     */
    public JacksonDBCollection getOutputCollection(){
        return outputCollection;
    }

    public CommandResult getCommandResult(){
        return output.getCommandResult();
    }

    public DBObject getCommand() {
        return output.getCommand();
    }

    public ServerAddress getServerUsed() {
        return output.getServerUsed();
    }

    public String toString(){
        return output.toString();
    }

}