Package org.apache.ofbiz.base.util.string

Class NodeELResolver

java.lang.Object

javax.el.ELResolver

org.apache.ofbiz.base.util.string.NodeELResolver

public class NodeELResolver
extends ELResolver

Defines property resolution behavior on Nodes. This resolver handles base objects that implement org.w3c.dom.Node or org.apache.xerces.dom.NodeImpl. It accepts a String as a property and compiles that String into an XPathExpression. The resulting value is the evaluation of the XPathExpression in the context of the base Node. This resolver is currently only available in read-only mode, which means that isReadOnly will always return true and setValue(ELContext, Object, Object, Object) will always throw PropertyNotWritableException. ELResolvers are combined together using CompositeELResolver s, to define rich semantics for evaluating an expression. See the javadocs for ELResolver for details.

Field Summary

Fields inherited from class javax.el.ELResolver

RESOLVABLE_AT_DESIGN_TIME, TYPE

Constructor Summary

Constructors

Constructor	Description
NodeELResolver()	Creates a new read-only NodeELResolver.

Method Summary

Modifier and Type	Method	Description
java.lang.Class<?>	getCommonPropertyType(ELContext context, java.lang.Object base)
java.util.Iterator<java.beans.FeatureDescriptor>	getFeatureDescriptors(ELContext context, java.lang.Object base)
java.lang.Class<?>	getType(ELContext context, java.lang.Object base, java.lang.Object property)
java.lang.Object	getValue(ELContext context, java.lang.Object base, java.lang.Object property)
boolean	isReadOnly(ELContext context, java.lang.Object base, java.lang.Object property)
void	setValue(ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value)

Methods inherited from class javax.el.ELResolver

convertToType, invoke

Methods inherited from class java.lang.Object

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

Constructor Detail

NodeELResolver

public NodeELResolver()

Creates a new read-only NodeELResolver.

Method Detail

getCommonPropertyType

public java.lang.Class<?> getCommonPropertyType(ELContext context,
                                                java.lang.Object base)

Specified by:

getCommonPropertyType in class ELResolver

getFeatureDescriptors

public java.util.Iterator<java.beans.FeatureDescriptor> getFeatureDescriptors(ELContext context,
                                                                              java.lang.Object base)

Specified by:

getFeatureDescriptors in class ELResolver

getType

public java.lang.Class<?> getType(ELContext context,
                                  java.lang.Object base,
                                  java.lang.Object property)

Specified by:

getType in class ELResolver

getValue

public java.lang.Object getValue(ELContext context,
                                 java.lang.Object base,
                                 java.lang.Object property)

Specified by:

getValue in class ELResolver

isReadOnly

public boolean isReadOnly(ELContext context,
                          java.lang.Object base,
                          java.lang.Object property)

Specified by:

isReadOnly in class ELResolver

setValue

public void setValue(ELContext context,
                     java.lang.Object base,
                     java.lang.Object property,
                     java.lang.Object value)

Specified by:

setValue in class ELResolver