/**
* Copyright 2011 Marco Berri - marcoberri@gmail.com
*
* 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 it.marcoberri.mbmeteo.helper;
import com.github.jmkgreen.morphia.Datastore;
import com.github.jmkgreen.morphia.Morphia;
import com.mongodb.DBCollection;
import com.mongodb.Mongo;
import com.mongodb.MongoClient;
import com.mongodb.MongoClientURI;
import com.mongodb.gridfs.GridFS;
import it.marcoberri.mbmeteo.model.Cache;
import it.marcoberri.mbmeteo.model.MapReduceHistoryMinMax;
import it.marcoberri.mbmeteo.model.MapReduceMinMax;
import it.marcoberri.mbmeteo.model.Meteolog;
import it.marcoberri.mbmeteo.model.News;
/**
*
* @author Marco Berri <marcoberri@gmail.com>
*/
public final class MongoConnectionHelper {
private static final MongoConnectionHelper INSTANCE = new MongoConnectionHelper();
/**
*
*/
public static Datastore ds;
private static GridFS gridFS;
private static final String GRIDCOLLECTIONNAME = "Cache";
private MongoConnectionHelper() {
if (ds != null) {
return;
}
try {
final MongoClient mongoClient = new MongoClient(ConfigurationHelper.prop.getProperty("mongo.host") );
final Morphia morphia = new Morphia();
morphia.map(Meteolog.class).map(News.class).map(Cache.class).map(MapReduceMinMax.class).map(MapReduceHistoryMinMax.class);
ds = morphia.createDatastore(mongoClient, ConfigurationHelper.prop.getProperty("mongo.dbname"));
ds.ensureCaps();
ds.ensureIndexes();
} catch (Exception e) {
throw new RuntimeException("Error initializing mongo db", e);
}
}
/**
*
* @return
*/
public static GridFS getGridFS() {
if (gridFS == null) {
gridFS = new GridFS(ds.getDB(), GRIDCOLLECTIONNAME);
}
return gridFS;
}
/**
*
* @return
*/
public static DBCollection getGridCol() {
return ds.getDB().getCollection(GRIDCOLLECTIONNAME);
}
/**
*
* @return
*/
public static MongoConnectionHelper instance() {
return INSTANCE;
}
}