/*
* Created on 21-Oct-2007
* Copyright (C) 2007 by Andrea Vacondio.
*
* This library is provided under dual licenses.
* You may choose the terms of the Lesser General Public License version 2.1 or the General Public License version 2
* License at your discretion.
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*
*
* This program 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 2 of the License.
*
* This program 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, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.pdfsam.console.business.pdf;
import java.util.Observable;
import java.util.Observer;
import org.apache.commons.lang.time.DurationFormatUtils;
import org.apache.commons.lang.time.StopWatch;
import org.apache.log4j.Logger;
import org.pdfsam.console.business.dto.commands.AbstractParsedCommand;
import org.pdfsam.console.business.dto.commands.ConcatParsedCommand;
import org.pdfsam.console.business.dto.commands.DecryptParsedCommand;
import org.pdfsam.console.business.dto.commands.DocumentInfoParsedCommand;
import org.pdfsam.console.business.dto.commands.EncryptParsedCommand;
import org.pdfsam.console.business.dto.commands.MixParsedCommand;
import org.pdfsam.console.business.dto.commands.PageLabelsParsedCommand;
import org.pdfsam.console.business.dto.commands.RotateParsedCommand;
import org.pdfsam.console.business.dto.commands.SetViewerParsedCommand;
import org.pdfsam.console.business.dto.commands.SlideShowParsedCommand;
import org.pdfsam.console.business.dto.commands.SplitParsedCommand;
import org.pdfsam.console.business.dto.commands.UnpackParsedCommand;
import org.pdfsam.console.business.pdf.handlers.AlternateMixCmdExecutor;
import org.pdfsam.console.business.pdf.handlers.ConcatCmdExecutor;
import org.pdfsam.console.business.pdf.handlers.DecryptCmdExecutor;
import org.pdfsam.console.business.pdf.handlers.DocumentInfoCmdExecutor;
import org.pdfsam.console.business.pdf.handlers.EncryptCmdExecutor;
import org.pdfsam.console.business.pdf.handlers.PageLabelsCmdExecutor;
import org.pdfsam.console.business.pdf.handlers.RotateCmdExecutor;
import org.pdfsam.console.business.pdf.handlers.SetViewerCmdExecutor;
import org.pdfsam.console.business.pdf.handlers.SlideShowCmdExecutor;
import org.pdfsam.console.business.pdf.handlers.SplitCmdExecutor;
import org.pdfsam.console.business.pdf.handlers.UnpackCmdExecutor;
import org.pdfsam.console.business.pdf.handlers.interfaces.AbstractCmdExecutor;
import org.pdfsam.console.exceptions.console.ConsoleException;
/**
* Manager for the commands execution
*
* @author Andrea Vacondio
*/
public class CmdExecuteManager extends Observable implements Observer {
private final Logger LOG = Logger.getLogger(CmdExecuteManager.class.getPackage().getName());
private AbstractCmdExecutor cmdExecutor = null;
private final StopWatch stopWatch = new StopWatch();
/**
* Executes the input parsed command
*
* @param parsedCommand
* @throws ConsoleException
*/
public void execute(AbstractParsedCommand parsedCommand) throws ConsoleException {
stopWatch.reset();
stopWatch.start();
try {
if (parsedCommand != null) {
cmdExecutor = getExecutor(parsedCommand);
if (cmdExecutor != null) {
cmdExecutor.addObserver(this);
cmdExecutor.execute(parsedCommand);
LOG.info("Command '" + parsedCommand.getCommand() + "' executed in "
+ DurationFormatUtils.formatDurationWords(stopWatch.getTime(), true, true));
} else {
throw new ConsoleException(ConsoleException.CMD_LINE_EXECUTOR_NULL, new String[] { ""
+ parsedCommand.getCommand() });
}
} else {
throw new ConsoleException(ConsoleException.CMD_LINE_NULL);
}
} finally {
stopWatch.stop();
cleanExecutor();
}
}
/**
* Clean the executor
*/
private void cleanExecutor() {
if (cmdExecutor != null) {
try {
cmdExecutor.clean();
} catch (Exception e) {
LOG.warn("Error cleaning the command executor: " + e.getMessage());
}
}
cmdExecutor = null;
}
/**
* forward the WorkDoneDataModel to the observers
*/
public void update(Observable arg0, Object arg1) {
setChanged();
notifyObservers(arg1);
}
/**
* @param parsedCommand
* @return an instance of the proper executor for the parsed command
*/
private AbstractCmdExecutor getExecutor(AbstractParsedCommand parsedCommand) {
AbstractCmdExecutor retVal;
if (MixParsedCommand.COMMAND_MIX.equals(parsedCommand.getCommand())) {
retVal = new AlternateMixCmdExecutor();
} else if (SplitParsedCommand.COMMAND_SPLIT.equals(parsedCommand.getCommand())) {
retVal = new SplitCmdExecutor();
} else if (EncryptParsedCommand.COMMAND_ENCRYPT.equals(parsedCommand.getCommand())) {
retVal = new EncryptCmdExecutor();
} else if (ConcatParsedCommand.COMMAND_CONCAT.equals(parsedCommand.getCommand())) {
retVal = new ConcatCmdExecutor();
} else if (UnpackParsedCommand.COMMAND_UNPACK.equals(parsedCommand.getCommand())) {
retVal = new UnpackCmdExecutor();
} else if (SetViewerParsedCommand.COMMAND_SETVIEWER.equals(parsedCommand.getCommand())) {
retVal = new SetViewerCmdExecutor();
} else if (SlideShowParsedCommand.COMMAND_SLIDESHOW.equals(parsedCommand.getCommand())) {
retVal = new SlideShowCmdExecutor();
} else if (DecryptParsedCommand.COMMAND_DECRYPT.equals(parsedCommand.getCommand())) {
retVal = new DecryptCmdExecutor();
} else if (RotateParsedCommand.COMMAND_ROTATE.equals(parsedCommand.getCommand())) {
retVal = new RotateCmdExecutor();
} else if (PageLabelsParsedCommand.COMMAND_PAGELABELS.equals(parsedCommand.getCommand())) {
retVal = new PageLabelsCmdExecutor();
} else if (DocumentInfoParsedCommand.COMMAND_SETDOCINFO.equals(parsedCommand.getCommand())) {
retVal = new DocumentInfoCmdExecutor();
} else {
retVal = null;
}
return retVal;
}
}