org.umber.catalan.transform.xml
Class XmlSelectProcessor

java.lang.Object
  org.umber.catalan.transform.BaseNodeProcessor
      org.umber.catalan.transform.xml.XmlSelectProcessor

All Implemented Interfaces:

INodeProcessor

public class XmlSelectProcessor

extends BaseNodeProcessor

Composite INodeProcessor which can select a subset of the current tree with a Bellows path, and only operate on that subset. This is useful for applying operations to specific nodes.

Author:

jsheets

Constructor Summary

XmlSelectProcessor(Datum xml, ProcessorRegistry registry)
Creates a new instance of XmlSelectProcessor from the XML spec.

XmlSelectProcessor(INodeProcessor[] processors, java.lang.String select)
Creates a new instance of XmlSelectProcessor.

Method Summary

java.util.List

processNode(java.lang.Object node) Process a single node.

Methods inherited from class org.umber.catalan.transform.BaseNodeProcessor

addLeftover, end, getLeftovers, getNodes, start

Methods inherited from class java.lang.Object

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

Constructor Detail

XmlSelectProcessor

public XmlSelectProcessor(Datum xml,
                          ProcessorRegistry registry)

Creates a new instance of XmlSelectProcessor from the XML spec.

Parameters:

xml - XML initializing spec

registry - mapping registry for resolving embedded processors

XmlSelectProcessor

public XmlSelectProcessor(INodeProcessor[] processors,
                          java.lang.String select)

Creates a new instance of XmlSelectProcessor.

Parameters:

processors - processors to wrap

select - optional Bellows query path to limit scope when processing XML

Method Detail

processNode

public java.util.List processNode(java.lang.Object node)

Process a single node. The processing action can be any arbitrary task, such as text replacement, data restructuring, or even statistical gathering. The processor should return a processed version of the node; this can be the same object untouched, or the same object modified, or a new set of objects.

Parameters:

node - the node to process

Returns:

a List of processing results (can be empty)