org.aw20.mongoworkbench.command.FindOneMongoCommand.java Source code

Introduction

Here is the source code for org.aw20.mongoworkbench.command.FindOneMongoCommand.java

Source

/* 
 *  MongoWorkBench is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  Free Software Foundation,version 3.
 *  
 *  MongoWorkBench is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  If not, see http://www.gnu.org/licenses/
 *  
 *  Additional permission under GNU GPL version 3 section 7
 *  
 *  If you modify this Program, or any covered work, by linking or combining 
 *  it with any of the JARS listed in the README.txt (or a modified version of 
 *  (that library), containing parts covered by the terms of that JAR, the 
 *  licensors of this Program grant you additional permission to convey the 
 *  resulting work. 
 *  
 *  https://github.com/aw20/MongoWorkBench
 *  Original fork: https://github.com/Kanatoko/MonjaDB
 */
package org.aw20.mongoworkbench.command;

import java.util.List;

import org.aw20.mongoworkbench.MongoFactory;

import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBObject;
import com.mongodb.MongoClient;

public class FindOneMongoCommand extends MongoCommand {
    private DBObject dbo;

    @Override
    public void execute() throws Exception {
        MongoClient mdb = MongoFactory.getInst().getMongo(sName);
        if (mdb == null)
            throw new Exception("no server selected");

        if (sDb == null)
            throw new Exception("no database selected");

        MongoFactory.getInst().setActiveDB(sDb);

        DB db = mdb.getDB(sDb);
        DBObject cmdMap = parseMongoCommandString(db, cmd);

        DBCollection collection = db.getCollection(sColl);

        // Construct the query
        int argSize = ((List) cmdMap.get("findOneArg")).size();

        if (argSize == 1) {
            DBObject ref = (DBObject) ((List) cmdMap.get("findOneArg")).get(0);
            dbo = collection.findOne(ref);
        } else if (argSize >= 2) {
            List findArg = (List) cmdMap.get("findOneArg");
            DBObject ref = (DBObject) findArg.get(0);
            DBObject key = (DBObject) findArg.get(1);
            dbo = collection.findOne(ref, key);
        } else
            throw new Exception("no query specified");

        setMessage("loaded: " + (dbo != null));
    }

    @Override
    public void parseCommandStr() throws Exception {
        sColl = getCollNameFromAction(cmd, "findOne");

        if (sColl == null || sColl.length() == 0)
            throw new Exception("failed to determine collection from command");
    }

    public DBObject getDbObject() {
        return dbo;
    }

    public boolean hasQueryData() {
        return true;
    }

    protected String getCollNameFromAction(String actionStr, String actionName) {
        return getMatchIgnoreCase("^db\\.([^\\(]+)\\." + actionName + "\\(", actionStr);
    }
}