org.piotr.apollo.mongo.migration.LessonMigration.java Source code

Introduction

Here is the source code for org.piotr.apollo.mongo.migration.LessonMigration.java

Source

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package org.piotr.apollo.mongo.migration;

import com.mongodb.client.MongoDatabase;
import com.mongodb.client.MongoIterable;
import org.piotr.apollo.database.mongoDB;

/**
 *
 * @author Leniwiec
 */
public class LessonMigration {

    mongoDB mongo = new mongoDB();

    public LessonMigration() {

        System.out.println("Lesson migration : start");

        Boolean collExist = false;
        MongoDatabase db = mongo.getDatabase();
        MongoIterable<String> collectionNames = db.listCollectionNames();

        for (String colName : collectionNames) {
            if (colName.equals("lessonCollection"))
                collExist = true;
        }

        if (!collExist) {
            System.out.println("Creating collection: lessonCollection");
            db.createCollection("lessonCollection");
        }
        System.out.println("Lesson migration : stop");
    }
}