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Panda Core is the core module of Panda Framework, it contains commonly used utility classes similar to apache-commons.

There is a newer version: 1.8.0

package panda.dao.mongo;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import com.mongodb.DB;
import com.mongodb.MongoClient;
import com.mongodb.MongoClientURI;

import panda.dao.Dao;
import panda.dao.DaoClient;
import panda.dao.DaoException;
import panda.dao.DatabaseMeta;

public class MongoDaoClient extends DaoClient {
	private MongoClient mongo;
	private MongoClientURI mcu;
	private DatabaseMeta meta;
	private Map, MongoConverter> mcs;
	
	/**
	 * mongodb://[username:password@]host1[:port1][,host2[:port2],...[,hostN[:portN]]][/[database[.collection]][?options]]
	 * @param uri mongo connection uri
	 * @see MongoClientURI
	 */
	public MongoDaoClient(String uri) {
		mcu = new MongoClientURI(uri);
		
		try {
			mongo = new MongoClient(mcu);
			String ver = getDb().command("buildInfo").getString("version");
			meta = new DatabaseMeta(panda.dao.DB.MONGO, "Mongo Java Driver", ver);
		}
		catch (Exception e) {
			throw new DaoException("Failed to create MongoDaoClient for " + uri, e);
		}
		
		mcs = new ConcurrentHashMap, MongoConverter>();
	}

	@SuppressWarnings("deprecation")
	public DB getDb() {
		return mongo.getDB(mcu.getDatabase());
	}
	
	@Override
	public DatabaseMeta getDatabaseMeta() {
		return meta;
	}

	@Override
	public Dao getDao() {
		return new MongoDao(this, getDb());
	}

	/**
	 * tokumx support transaction
	 * http://www.tokutek.com/2013/04/mongodb-multi-statement-transactions-yes-we-can/
	 * 
	 * @return false the mongo does not support transaction
	 */
	public boolean isTransactionSupport() {
		return false;
	}
	
	public void registerConverter(Class cls, MongoConverter mc) {
		mcs.put(cls, mc);
	}
	
	public MongoConverter findConverter(Class cls) {
		return mcs.get(cls);
	}
}