org.lsst.ccs.utilities.conv

Class InputConversionEngine

java.lang.Object

org.lsst.ccs.utilities.conv.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

Modifier and Type	Method and Description
static Object	convertArgToType(String arg, Type inputType) 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 static Object convertArgToType(String arg,
                                      Type inputType)
                               throws TypeConversionException

Convert the input string to an object of the given class. The second argument is a java.lang.reflect.Type. The reason is so that we can use Java Generics when we are dealing with templated classes.

Parameters:

arg - The string to be converted

inputType - The Type that the string should be converted to

Returns:

The converted argument

Throws:

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