org.obiba.bitwise.client.OpenCommand.java Source code

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Here is the source code for org.obiba.bitwise.client.OpenCommand.java

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/*******************************************************************************
 * Copyright 2007(c) Gnome Qubec. All rights reserved.
 * 
 * This file is part of GenoByte.
 * 
 * GenoByte is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 * 
 * GenoByte 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
 * along with this program.  If not, see <http://www.gnu.org/licenses/>. 
 *******************************************************************************/
package org.obiba.bitwise.client;

import org.apache.commons.cli.Option;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.ParseException;
import org.obiba.bitwise.BitwiseStore;
import org.obiba.bitwise.BitwiseStoreUtil;

/**
 * This command will close a currently opened store if there is, and open a new
 * one. It will take care of modifying the client context.
 */
class OpenCommand implements CliCommand {
    public boolean execute(Option opt, ClientContext context) {
        BitwiseStoreUtil bwsUtil = BitwiseStoreUtil.getInstance();

        //Extract name of store to be opened
        String newStoreName = opt.getValue();

        //Make sure the store name exists
        if (!(bwsUtil.exists(newStoreName))) {
            System.out.println("Specified store name doesn't exist.\n");
            return false;
        }

        //Close the currently opened store
        BitwiseStore currentStore = context.getStore();
        if (!(currentStore == null)) {
            currentStore.endTransaction();
            currentStore.close();
        }

        //Open the new store
        BitwiseStore newStore = bwsUtil.open(newStoreName);
        newStore.startTransaction();
        context.setStore(newStore);

        System.out.println("Switching to store " + newStoreName + "\n");
        return false;
    }

    public Option getOption() {
        return OptionBuilder.withDescription("change the current active store").withLongOpt("open").hasArg()
                .withArgName("storeName").create('o');
    }
}