/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package arq.cmdline;
import arq.cmd.CmdException ;
import arq.cmd.TerminationException ;
import com.hp.hpl.jena.shared.JenaException ;
import com.hp.hpl.jena.sparql.util.Utils ;
/** Adds main()-like methods
*
* Usage:
* new YourCommand(args).mainAndExit()
* which never returns and routes thing to System.exit.
* or call
* new YourCommand(args).mainMethod()
* which should not call System.exit anywhere */
public abstract class CmdMain extends CmdLineArgs
{
public CmdMain(String[] args)
{
super(args) ;
}
/** Run command - exit on failure */
public void mainRun()
{ mainRun(false, true) ; }
/** Run command - choose whether to exit on failure */
public void mainRun(boolean exitOnFailure)
{ mainRun(exitOnFailure, true) ; }
/** Run command - exit on success or failure */
public void mainAndExit()
{ mainRun(true, true) ; }
/** Run command */
public int mainRun(boolean exitOnSuccess, boolean exitOnFailure)
{
try { mainMethod() ; }
catch (TerminationException ex) { System.exit(ex.getCode()) ; }
catch (JenaException ex)
{
ex.printStackTrace(System.err) ;
String s = Utils.className(ex) ;
// System.err.println(s) ;
// System.err.println(ex.getMessage()) ;
if ( exitOnFailure ) System.exit(2) ;
return 2 ;
}
catch (IllegalArgumentException ex)
{
System.err.println(ex.getMessage()) ;
if ( exitOnFailure ) System.exit(1) ;
return 1 ;
}
catch (CmdException ex)
{
if ( ex.getMessage() != null && ex.getMessage().length() > 0 )
System.err.println(ex.getMessage()) ;
//ex.printStackTrace() ;
if ( ex.getCause() != null )
ex.getCause().printStackTrace(System.err) ;
if ( exitOnFailure ) System.exit(1) ;
return 1 ;
}
if ( exitOnSuccess )
System.exit(0) ;
return 0 ;
}
protected final void mainMethod()
{
process() ;
exec() ;
}
protected abstract void exec() ;
protected abstract String getCommandName() ;
public void cmdError(String msg) { cmdError(msg, true) ;}
public void cmdError(String msg, boolean exit)
{
System.err.println(msg) ;
if ( exit )
throw new TerminationException(5) ;
}
}