org.lsst.ccs.command

Class InputConversionEngine

java.lang.Object

org.lsst.ccs.command.InputConversionEngine

public class InputConversionEngine
extends Object

This class is responsible for converting strings to objects of a particular class. It is used to convert command arguments into objects to be passed to the corresponding method. The current implementation is very simple, dealing only with built in types, or types with constructors which take a string. It would be possible to add back in the cliche functionality which allowed extra input converters to be registered with the input conversion engine. Note that in a distributed system argument conversion is only done on the remote (server) end, so any special classes used for arguments only need to be present on the remote (server). In CCS terminology this means that the classes only need to be present in the subsystem.

Author:

tonyj

Constructor Summary

Constructors

Constructor and Description
InputConversionEngine()

Method Summary

Methods

Modifier and Type	Method and Description
Object	convertArgToType(String arg, Class type) Convert the input string to an object of the given class

Methods inherited from class java.lang.Object

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

Constructor Detail

InputConversionEngine

public InputConversionEngine()

Method Detail

convertArgToType

public Object convertArgToType(String arg,
                      Class type)
                        throws CommandInvocationException

Convert the input string to an object of the given class

Parameters:

arg - The string to be converted

type - The type that the string should be converted to

Returns:

The converted argument

Throws:

CommandInvocationException - If the string cannot be converted to the requested type