co.edu.uniandes.cloud.simuladorcredito.persistencia.SuperDAO.java Source code

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Here is the source code for co.edu.uniandes.cloud.simuladorcredito.persistencia.SuperDAO.java

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package co.edu.uniandes.cloud.simuladorcredito.persistencia;

import co.edu.uniandes.cloud.simuladorcredito.jpa.SuperPojo;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.MongoClient;
import com.mongodb.MongoURI;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Fredy
 */
public class SuperDAO<T extends SuperPojo> {
    //private static MongoClient mongoClient ;
    protected static DB db;
    static {
        try {
            /*MongoClient mongoClient = new MongoClient( "localhost" , 27017 );
            db = mongoClient.getDB( "mydb" );*/

            MongoURI mongoURI = new MongoURI(System.getenv("MONGOHQ_URL"));
            db = mongoURI.connectDB();
            db.authenticate(mongoURI.getUsername(), mongoURI.getPassword());

        } catch (UnknownHostException ex) {
            Logger.getLogger(SuperDAO.class.getName()).log(Level.SEVERE, null, ex);
        } catch (Exception ex) {
            Logger.getLogger(SuperDAO.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    protected DBCollection col;

    protected DBObject leerBD(String campo, Object valor) {
        BasicDBObject query = new BasicDBObject(campo, valor);
        DBCursor cursor = col.find(query);
        try {
            if (cursor.hasNext()) {
                return cursor.next();
            } else {
                return null;
            }
        } finally {
            cursor.close();
        }
    }

    protected List<DBObject> leerVariosBD(String campo, Object valor) {
        List<DBObject> lista = new ArrayList();
        BasicDBObject query = new BasicDBObject(campo, valor);
        DBCursor cursor = col.find(query);
        try {
            while (cursor.hasNext()) {
                lista.add(cursor.next());
            }
        } finally {
            cursor.close();
        }
        return lista;
    }

    protected void remover(String campo, Object valor) {
        col.remove(new BasicDBObject(campo, valor));
    }

}