org.xtext.mongobeans.examples.JavaExample.java Source code

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Here is the source code for org.xtext.mongobeans.examples.JavaExample.java

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/*******************************************************************************
 * Copyright (c) 2012 itemis AG (http://www.itemis.eu) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *******************************************************************************/
package org.xtext.mongobeans.examples;

import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBObject;
import com.mongodb.Mongo;
import com.mongodb.MongoException;

public class JavaExample {

    public void dealWithMongoEntities() throws UnknownHostException, MongoException {
        DBObject artist = new BasicDBObject();
        artist.put("name", "John Coltrane");
        DBObject album = new BasicDBObject();
        album.put("title", "A Love Supreme");
        album.put("year", 1965);
        List<DBObject> albums = new ArrayList<DBObject>();
        artist.put("albums", albums);

        DB db = new Mongo().getDB("testdb");
        DBCollection dbCollection = db.getCollection("testCollection");
        dbCollection.save(artist);

        DBObject query = new BasicDBObject();
        query.put("name", "John Coltrane");
        DBObject artistFromDB = dbCollection.find(query).next();
        Object albumFromDB = artistFromDB.get("album");
        if (albumFromDB instanceof Collection) {
            Object firstAlbumFromDB = ((Collection<?>) album).iterator().next();
            if (firstAlbumFromDB instanceof DBObject) {
                Object titleFromDB = album.get("title");
                System.out.println(titleFromDB.toString());
            }
        }
    }
}