com.hangum.tadpole.mongodb.core.test.MongoTestServerSideJavascript.java Source code

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Here is the source code for com.hangum.tadpole.mongodb.core.test.MongoTestServerSideJavascript.java

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/*******************************************************************************
 * Copyright (c) 2013 hangum.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v2.1
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *     hangum - initial API and implementation
 ******************************************************************************/
package com.hangum.tadpole.mongodb.core.test;

import java.util.List;

import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.Mongo;
import com.mongodb.util.JSON;

/**
 * MongoDB ServerSide JavaScirpt
 * 
 * @author hangum
 * 
 */
public class MongoTestServerSideJavascript {

    /**
     * @param args
     */
    public static void main(String[] args) throws Exception {

        ConAndAuthentication testMongoCls = new ConAndAuthentication();
        Mongo mongo = testMongoCls.connection(ConAndAuthentication.serverurl, ConAndAuthentication.port);
        DB db = mongo.getDB("test");

        createServerSideJavaScript(db);
        updateServerSideJavaScript(db, "addNumbers", "update java script");
        findAllServerSideJavaScript(db);

        Object[] arryArgs = { 25, 34 };
        evalServerSideJavaScript(db, "addNumbers2", arryArgs);

        mongo.close();

        try {
            Thread.sleep(1);
        } catch (Exception e) {
        }
    }

    /**
     * java script ?
     * @param db
     */
    private static void createServerSideJavaScript(DB db) {
        //      DBObject dbObject = (DBObject) JSON.parse("{'_id':'addNumbers', 'value':'function(x, y){ return x + y; }'}");
        //      db.getCollection("system.js").save(dbObject);

        //      DBObject dbObject = (DBObject) JSON.parse("{'_id':'addNumbers2', 'value':'function(x, y){ return x + y; }'}");
        //      db.getCollection("system.js").save(dbObject);   
    }

    /**
     * update java script
     * 
     * @param db
     * @param id
     * @param content
     */
    private static void updateServerSideJavaScript(DB db, String id, String content) {
        DBObject dbFindObject = (DBObject) JSON.parse("{'_id':'" + id + "'}");
        DBObject dbUpdateObject = (DBObject) JSON.parse("{'_id':'" + id + "', 'value':'" + content + "'}");

        db.getCollection("system.js").findAndModify(dbFindObject, dbUpdateObject);

    }

    /**
     *  ? 
     * @param db
     */
    private static void findAllServerSideJavaScript(DB db) {
        DBCursor dbCursor = db.getCollection("system.js").find();
        List<DBObject> lsitCursor = dbCursor.toArray();
        for (DBObject dbObject : lsitCursor) {
            System.out.println(dbObject.toString());
        }
    }

    /**
     * ?? 
     *  
     * @param db
     * @param jsName
     * @return
     */
    private static String findServerSideJavaScript(DB db, String jsName) {
        DBObject findDbObject = new BasicDBObject();
        findDbObject.put("_id", jsName);

        DBCursor dbCursor = db.getCollection("system.js").find(findDbObject);
        DBObject dbObject = dbCursor.next();
        return dbObject.get("value").toString();
    }

    /**
     * ?? ?
     * 
     * @param db
     * @param name
     * @param arryArgs
     */
    private static void evalServerSideJavaScript(DB db, String name, Object[] arryArgs) {
        Object dbObject = db.eval(findServerSideJavaScript(db, name), arryArgs);
        System.out.println("[result]\t" + dbObject);
    }

}