net.sourceforge.argparse4j.impl.action

Class AppendArgumentAction

java.lang.Object

net.sourceforge.argparse4j.impl.action.AppendArgumentAction

All Implemented Interfaces:

ArgumentAction

public class AppendArgumentAction
extends Object
implements ArgumentAction

Argument action to store a list.

This action appends each argument value to the list. The list is of type List. This is useful to allow an option to be specified multiple times. If attrs contains non-List object for key Argument.getDest(), it will be overwritten by the List containing value. consumeArgument() always returns true.

Constructor Summary

Constructors

Constructor and Description
AppendArgumentAction()

Method Summary

Modifier and Type	Method and Description
boolean	consumeArgument() Returns true if this action consumes argument.
void	onAttach(Argument arg) Called when ArgumentAction is added to Argument using Argument.action(ArgumentAction).
void	run(ArgumentParser parser, Argument arg, Map<String,Object> attrs, String flag, Object value) Executes this action.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AppendArgumentAction

public AppendArgumentAction()

Method Detail

run

public void run(ArgumentParser parser,
                Argument arg,
                Map<String,Object> attrs,
                String flag,
                Object value)
         throws ArgumentParserException

Description copied from interface: ArgumentAction

Executes this action.

If the objects derived from RuntimeException are thrown in this method because of invalid input from command line, subclass must catch these exceptions and wrap them in ArgumentParserException and give simple error message to explain what happened briefly.

Specified by:

run in interface ArgumentAction

Parameters:

parser - The parser.

arg - The argument this action attached to.

attrs - Map to store attributes.

flag - The actual option flag in command line if arg is a named arguments. null if arg is a positional argument.

value - The attribute value. This may be null if this action does not consume any arguments.

Throws:

ArgumentParserException - If error occurred.

consumeArgument

public boolean consumeArgument()

Description copied from interface: ArgumentAction

Returns true if this action consumes argument. Otherwise returns false.

Specified by:

consumeArgument in interface ArgumentAction

Returns:

true or false.

onAttach

public void onAttach(Argument arg)

Description copied from interface: ArgumentAction

Called when ArgumentAction is added to Argument using Argument.action(ArgumentAction).

Specified by:

onAttach in interface ArgumentAction

Parameters:

arg - Argument object to which this object is added.