com.sube.daos.mongodb.generators.GenericDBRefGenerator.java Source code

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Here is the source code for com.sube.daos.mongodb.generators.GenericDBRefGenerator.java

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/*******************************************************************************
 * Copyright 2012 Javier Ignacio Lecuona
 * 
 * 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.sube.daos.mongodb.generators;

import org.bson.BSONObject;

import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBRef;
import com.sube.beans.MongoBean;

public class GenericDBRefGenerator<T extends MongoBean> implements DBRefGenerator<T> {
    private DB db;
    private String collection;

    @Override
    public DBRef generateDBRef(T toGenerate) {
        DBCollection dbCollection = db.getCollection(collection);
        // { $ref : <collname>, $id : <idvalue>[, $db : <dbname>] }
        BSONObject dbRefObj = new BasicDBObject("$ref", dbCollection.getName())
                .append("$id", toGenerate.getMongoId()).append("$db", db.getName());
        DBRef dbRef = new DBRef(db, dbRefObj);
        return dbRef;
    }

    public void setDb(DB db) {
        this.db = db;
    }

    public void setCollection(String collection) {
        this.collection = collection;
    }
}