groovy.util.slurpersupport

Class NoChildren

java.lang.Object

groovy.lang.GroovyObjectSupport

groovy.util.slurpersupport.GPathResult

groovy.util.slurpersupport.NoChildren

All Implemented Interfaces:

Buildable, GroovyObject, Writable, Iterable

public class NoChildren
extends GPathResult

Lazy evaluated representation of a GPath expression returning no children. As this class represents a GPath expression with no results, all methods are either NOPs or return an empty result.

Author:

John Wilson

Field Summary

Fields inherited from class groovy.util.slurpersupport.GPathResult

name, namespaceMap, namespacePrefix, namespaceTagHints, parent

Constructor Summary

Constructors

Constructor and Description
NoChildren(GPathResult parent, String name, Map<String,String> namespaceTagHints)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	appendNode(Object newValue) NOP
boolean	asBoolean() Returns false.
void	build(GroovyObject builder) NOP
Iterator	childNodes() Returns an empty Iterator.
GPathResult	find(Closure closure) Returns this.
GPathResult	findAll(Closure closure) Returns this.
Iterator	iterator() Returns an empty Iterator.
Iterator	nodeIterator() Returns an empty iterator.
GPathResult	parents() Throws a GroovyRuntimeException, because it is not implemented yet.
protected void	replaceBody(Object newValue) NOP
protected void	replaceNode(Closure newValue) NOP
int	size() Returns 0.
String	text() Returns an empty String.
Writer	writeTo(Writer out) Does not write any output, just returns the writer.

Methods inherited from class groovy.util.slurpersupport.GPathResult

breadthFirst, children, declareNamespace, depthFirst, equals, getAt, getAt, getBody, getProperty, isEmpty, leftShift, list, lookupNamespace, name, parent, plus, pop, putAt, setMetaClass, setProperty, toBigDecimal, toBigInteger, toBoolean, toDouble, toFloat, toInteger, toLong, toString, toURI, toURL

Methods inherited from class groovy.lang.GroovyObjectSupport

getMetaClass, invokeMethod

Methods inherited from class java.lang.Object

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

Constructor Detail

NoChildren

public NoChildren(GPathResult parent,
          String name,
          Map<String,String> namespaceTagHints)

Parameters:

parent - the GPathResult prior to the application of the expression creating this GPathResult

name - if the GPathResult corresponds to something with a name, e.g. a node

namespaceTagHints - the known tag to namespace mappings

Method Detail

size

public int size()

Returns 0.

Specified by:

size in class GPathResult

Returns:

0

text

public String text()

Returns an empty String.

Specified by:

text in class GPathResult

Returns:

an empty String

parents

public GPathResult parents()

Throws a GroovyRuntimeException, because it is not implemented yet.

Specified by:

parents in class GPathResult

Returns:

the parents of this GPathResult

childNodes

public Iterator childNodes()

Returns an empty Iterator.

Specified by:

childNodes in class GPathResult

Returns:

an empty Iterator

iterator

public Iterator iterator()

Returns an empty Iterator.

Specified by:

iterator in interface Iterable

Specified by:

iterator in class GPathResult

Returns:

an empty Iterator

find

public GPathResult find(Closure closure)

Returns this.

Specified by:

find in class GPathResult

Parameters:

closure - a closure to filters the children of this GPathResult

Returns:

this

findAll

public GPathResult findAll(Closure closure)

Returns this.

Specified by:

findAll in class GPathResult

Parameters:

closure - a closure to filters the children of this GPathResult

Returns:

this

nodeIterator

public Iterator nodeIterator()

Returns an empty iterator.

Specified by:

nodeIterator in class GPathResult

Returns:

an empty iterator

writeTo

public Writer writeTo(Writer out)
               throws IOException

Does not write any output, just returns the writer.

Parameters:

out - the Writer to which this Writable should output its data.

Returns:

the Writer which was passed in

Throws:

IOException - if an error occurred while outputting data to the writer

build

public void build(GroovyObject builder)

NOP

replaceNode

protected void replaceNode(Closure newValue)

NOP

Specified by:

replaceNode in class GPathResult

replaceBody

protected void replaceBody(Object newValue)

NOP

Specified by:

replaceBody in class GPathResult

appendNode

protected void appendNode(Object newValue)

NOP

Specified by:

appendNode in class GPathResult

asBoolean

public boolean asBoolean()

Returns false.

Returns:

false