jfun.yan.xml.nuts.optional
Class SwitchNut

java.lang.Object
  jfun.yan.xml.nut.Nut
      jfun.yan.xml.nut.ComponentNut
          jfun.yan.xml.nuts.optional.SwitchNut

All Implemented Interfaces:

java.io.Serializable

public class SwitchNut
extends ComponentNut

The switch-case tag that supports <case> and <default> sub-tags. It takes similar syntax and semantics as Java switch-case statement. for example:

 <switch val="1">
   <case of="1">
     <return val="one"/>
   </case>
   <case of="2">
     <fail msg="this is so wrong!"/>
   </case>
   <default>
     <pring msg="did not find a match"/>
   </default>
 </switch>
 

Unlike Java, there's no fall-through behavior. And if default branch is not specified and no match is found, it silently returns.

Author:

Ben Yu Nov 11, 2005 3:46:03 PM

See Also:

Serialized Form

Constructor Summary

SwitchNut()

Method Summary

void	addCase(Case cs)
void	addDefault(Default def)
Component	eval()
java.lang.Object	getVal()
void	setVal(java.lang.Object val)

Methods inherited from class jfun.yan.xml.nut.Nut

cast, checkDuplicate, checkMandatory, checkMandatory, convert, getComponentClassLoader, getId, getNutClassLoader, getNutEnvironment, getParameterWiring, getPropertyWiring, getSequenceNumber, getTagLocation, getTagName, initGloballyDefined, initNutEnvironment, initSequenceNumber, initTagLocation, initTagName, isGloballyDefined, raise, raise, register, registerEagerInstantiation, setId, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SwitchNut

public SwitchNut()

Method Detail

getVal

public java.lang.Object getVal()

setVal

public void setVal(java.lang.Object val)

addCase

public void addCase(Case cs)

addDefault

public void addDefault(Default def)

eval

public Component eval()

Specified by:

eval in class ComponentNut