|
DRAFT | ||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | ||||||||
java.lang.Objectjavax.el.ELResolver
javax.el.ResourceBundleELResolver
public class ResourceBundleELResolver
Defines property resolution behavior on instances of
ResourceBundle.
This resolver handles base objects of type
java.util.ResourceBundle. It accepts any object as a property
and coerces it to a java.lang.String for invoking
ResourceBundle.getObject(java.lang.String).
This resolver is read only and will throw a
PropertyNotWritableException if setValue is called.
ELResolvers are combined together using
CompositeELResolvers, to define rich semantics for evaluating an
expression. See the javadocs for ELResolver for details.
CompositeELResolver,
ELResolver,
ResourceBundle| Field Summary |
|---|
| Fields inherited from class javax.el.ELResolver |
|---|
RESOLVABLE_AT_DESIGN_TIME, TYPE |
| Constructor Summary | |
|---|---|
ResourceBundleELResolver()
|
|
| Method Summary | |
|---|---|
java.lang.Class<?> |
getCommonPropertyType(ELContext context,
java.lang.Object base)
If the base object is a ResourceBundle, returns the most general type that this resolver accepts for the property argument. |
java.util.Iterator |
getFeatureDescriptors(ELContext context,
java.lang.Object base)
If the base object is a ResourceBundle, returns an Iterator
containing the set of keys available in the ResourceBundle. |
java.lang.Class<?> |
getType(ELContext context,
java.lang.Object base,
java.lang.Object property)
If the base object is an instance of ResourceBundle,
return null, since the resolver is read only. |
java.lang.Object |
getValue(ELContext context,
java.lang.Object base,
java.lang.Object property)
If the base object is an instance of ResourceBundle,
the provided property will first be coerced to a String. |
boolean |
isReadOnly(ELContext context,
java.lang.Object base,
java.lang.Object property)
If the base object is not null and an instanceof ResourceBundle,
return true. |
void |
setValue(ELContext context,
java.lang.Object base,
java.lang.Object property,
java.lang.Object value)
If the base object is a ResourceBundle, throw a PropertyNotWritableException. |
| Methods inherited from class javax.el.ELResolver |
|---|
invoke |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public ResourceBundleELResolver()
| Method Detail |
|---|
public java.lang.Object getValue(ELContext context,
java.lang.Object base,
java.lang.Object property)
ResourceBundle,
the provided property will first be coerced to a String.
The Object returned by getObject on
the base ResourceBundle will be returned.
If the base is ResourceBundle, the
propertyResolved property of the ELContext
object must be set to true by this resolver, before
returning. If this property is not true after this method
is called, the caller should ignore the return value.
getValue in class ELResolvercontext - The context of this evaluation.base - The ResourceBundle to analyze.property - The name of the property to analyze. Will be coerced to a
String.
propertyResolved property of
ELContext was set to true, then
null if property is null;
otherwise the Object for the given key
(property coerced to String) from the
ResourceBundle.
If no object for the given key can be found, then the
String "???" + key + "???".
java.lang.NullPointerException - if context is null
ELException - if an exception was thrown while performing the property or
variable resolution. The thrown exception must be included as
the cause property of this exception, if available.
public java.lang.Class<?> getType(ELContext context,
java.lang.Object base,
java.lang.Object property)
ResourceBundle,
return null, since the resolver is read only.
If the base is ResourceBundle, the
propertyResolved property of the ELContext
object must be set to true by this resolver, before
returning. If this property is not true after this method
is called, the caller should ignore the return value.
getType in class ELResolvercontext - The context of this evaluation.base - The ResourceBundle to analyze.property - The name of the property to analyze.
propertyResolved property of
ELContext was set to true, then
null; otherwise undefined.
java.lang.NullPointerException - if context is null
public void setValue(ELContext context,
java.lang.Object base,
java.lang.Object property,
java.lang.Object value)
PropertyNotWritableException.
setValue in class ELResolvercontext - The context of this evaluation.base - The ResourceBundle to be modified. Only bases that are of type
ResourceBundle are handled.property - The String property to use.value - The value to be set.
java.lang.NullPointerException - if context is null.
PropertyNotWritableException - Always thrown if base is an instance of ReasourceBundle.
public boolean isReadOnly(ELContext context,
java.lang.Object base,
java.lang.Object property)
ResourceBundle,
return true.
isReadOnly in class ELResolvercontext - The context of this evaluation.base - The ResourceBundle to be modified. Only bases that are of type
ResourceBundle are handled.property - The String property to use.
propertyResolved property of
ELContext was set to true, then
true; otherwise undefined.
java.lang.NullPointerException - if context is null
public java.util.Iterator getFeatureDescriptors(ELContext context,
java.lang.Object base)
Iterator
containing the set of keys available in the ResourceBundle.
Otherwise, returns null.
The Iterator returned must contain zero or more instances
of FeatureDescriptor. Each info object contains
information about a key in the ResourceBundle, and is initialized as
follows:
String key
falsefalsetrueFeatureDescriptors:
ELResolver#TYPE - String.classELResolver#RESOLVABLE_AT_DESIGN_TIME - true
getFeatureDescriptors in class ELResolvercontext - The context of this evaluation.base - The bundle whose keys are to be iterated over. Only bases of
type ResourceBundle are handled by this
resolver.
Iterator containing zero or more (possibly
infinitely more) FeatureDescriptor objects, each
representing a key in this bundle, or null if the
base object is not a ResourceBundle.FeatureDescriptor
public java.lang.Class<?> getCommonPropertyType(ELContext context,
java.lang.Object base)
property argument.
Otherwise, returns null.
Assuming the base is a ResourceBundle, this method will
always return String.class.
getCommonPropertyType in class ELResolvercontext - The context of this evaluation.base - The bundle to analyze. Only bases of type
ResourceBundle are handled by this resolver.
null if base is not a ResourceBundle;
otherwise String.class.
|
DRAFT | ||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | ||||||||
Copyright © 2009 Sun Microsystems, Inc. All Rights Reserved. Use is subject to license terms.
Generated on 24-November-2009 03:24