com.saelist.stx.operators
Class SelectOperator

java.lang.Object
  com.saelist.stx.operators.AbstractOperator
      com.saelist.stx.operators.SelectOperator

All Implemented Interfaces:

Operator

public class SelectOperator

extends AbstractOperator

See Operator for general description of the Operator concept in stx. SelectOperator removes all siblings of each visited pair from the parent aswell as the pair it self and promotes the children for the pair up one level. A typecal use case is to select a language version. For example select on "//de" will transform the structure

   subject
     en=English subject.
     de=Deutsches Subjekt.
     dk=Danskt subjekt.
   message
     en
       This is the english
       message.
     de
       Das ist die deutsche
       Nachricht.
     dk
       Det er det danske
       beskjed.

into

   subject=Deutsches Subjekt.
   message
     Das ist die deutsche
     Nachricht.

Field Summary

Fields inherited from class com.saelist.stx.operators.AbstractOperator

config, logger

Constructor Summary

SelectOperator()

Method Summary

void	init() Descendants should overide this if they vant to cache elements of config in member variables or do some other inital setup.
void	operate(Pair pair) Performs the select operation on the given pair.

Methods inherited from class com.saelist.stx.operators.AbstractOperator

init, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

SelectOperator

public SelectOperator()

Method Detail

init

public void init()

Description copied from class: AbstractOperator

Descendants should overide this if they vant to cache elements of config in member variables or do some other inital setup.

Overrides:

init in class AbstractOperator

operate

public void operate(Pair pair)

Performs the select operation on the given pair.

Specified by:

operate in interface Operator

Specified by:

operate in class AbstractOperator

Throws:

java.lang.IllegalStateException - if this hasn't been initialized.