com.dydabo.blackbox.mongodb.db.MongoDBConnectionManager.java Source code

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Here is the source code for com.dydabo.blackbox.mongodb.db.MongoDBConnectionManager.java

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/*
 * Copyright 2017 viswadas leher .
 *
 * 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.dydabo.blackbox.mongodb.db;

import com.dydabo.blackbox.common.utils.DyDaBoUtils;
import com.mongodb.MongoClient;
import com.mongodb.MongoClientURI;
import com.mongodb.client.MongoCollection;
import org.bson.Document;

/**
 * @author viswadas leher
 */
public class MongoDBConnectionManager {

    private static final Object lockObj = new Object();
    private static MongoClient mongoClient = null;

    /**
     * @param connString
     * @param database
     * @param collection
     * @return
     */
    public static MongoCollection<Document> getMongoDBCollection(String connString, String database,
            String collection) {
        if (mongoClient == null) {
            if (DyDaBoUtils.isBlankOrNull(connString)) {
                connString = "com.dydabo.com.dydabo.blackbox.blackbox.mongodb.mongodb://localhost:27017";
            }
            synchronized (lockObj) {
                mongoClient = new MongoClient(new MongoClientURI(connString));
            }
        }
        return mongoClient.getDatabase(database).getCollection(collection);
    }
}