com.sun.faces.el

Class CompositeComponentAttributesELResolver

java.lang.Object

javax.el.ELResolver

com.sun.faces.el.CompositeComponentAttributesELResolver

public class CompositeComponentAttributesELResolver
extends javax.el.ELResolver

This ELResolver will handle the resolution of attrs when processing a composite component instance.

Field Summary

Fields inherited from class javax.el.ELResolver

RESOLVABLE_AT_DESIGN_TIME, TYPE

Constructor Summary

Constructors

Constructor and Description
CompositeComponentAttributesELResolver()

Method Summary

Modifier and Type	Method and Description
Class<?>	getCommonPropertyType(javax.el.ELContext context, Object base) attrs is considered a String property.
Map<String,Object>	getEvalMapFor(UIComponent c, FacesContext ctx) Creates (if necessary) and caches an ExpressionEvalMap instance associated with the owning UIComponent
Iterator<FeatureDescriptor>	getFeatureDescriptors(javax.el.ELContext context, Object base) This ELResolver currently returns no feature descriptors as we have no way to effectively iterate over the UIComponent attributes Map.
Class<?>	getType(javax.el.ELContext context, Object base, Object property) Readonly, so return null.
Object	getValue(javax.el.ELContext context, Object base, Object property) If base is a composite component and property is attrs, return a new ExpressionEvalMap which wraps the composite component's attributes map.
boolean	isReadOnly(javax.el.ELContext context, Object base, Object property) Readonly, so return true
void	setValue(javax.el.ELContext context, Object base, Object property, Object value) This is a no-op.

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

CompositeComponentAttributesELResolver

public CompositeComponentAttributesELResolver()

Method Detail

getValue

public Object getValue(javax.el.ELContext context,
                       Object base,
                       Object property)

If base is a composite component and property is attrs, return a new ExpressionEvalMap which wraps the composite component's attributes map.

The ExpressionEvalMap simple evaluates any ValueExpression instances stored in the composite component's attribute map and returns the result.

If base is a composite component and property is parent attempt to resolve the composite componet parent of the current composite component by calling UIComponent.getCompositeComponentParent(javax.faces.component.UIComponent)) and returning that value.

Specified by:

getValue in class javax.el.ELResolver

See Also:

ELResolver.getValue(javax.el.ELContext, Object, Object), CompositeComponentAttributesELResolver.ExpressionEvalMap

getType

public Class<?> getType(javax.el.ELContext context,
                        Object base,
                        Object property)

Readonly, so return null.

Specified by:

getType in class javax.el.ELResolver

See Also:

ELResolver.getType(javax.el.ELContext, Object, Object)

setValue

public void setValue(javax.el.ELContext context,
                     Object base,
                     Object property,
                     Object value)

This is a no-op.

Specified by:

setValue in class javax.el.ELResolver

See Also:

ELResolver.setValue(javax.el.ELContext, Object, Object, Object)

isReadOnly

public boolean isReadOnly(javax.el.ELContext context,
                          Object base,
                          Object property)

Readonly, so return true

Specified by:

isReadOnly in class javax.el.ELResolver

See Also:

ELResolver.isReadOnly(javax.el.ELContext, Object, Object)

getFeatureDescriptors

public Iterator<FeatureDescriptor> getFeatureDescriptors(javax.el.ELContext context,
                                                         Object base)

This ELResolver currently returns no feature descriptors as we have no way to effectively iterate over the UIComponent attributes Map.

Specified by:

getFeatureDescriptors in class javax.el.ELResolver

See Also:

ELResolver.getFeatureDescriptors(javax.el.ELContext, Object)

getCommonPropertyType

public Class<?> getCommonPropertyType(javax.el.ELContext context,
                                      Object base)

attrs is considered a String property.

Specified by:

getCommonPropertyType in class javax.el.ELResolver

See Also:

ELResolver.getCommonPropertyType(javax.el.ELContext, Object)

getEvalMapFor

public Map<String,Object> getEvalMapFor(UIComponent c,
                                        FacesContext ctx)

Creates (if necessary) and caches an ExpressionEvalMap instance associated with the owning UIComponent

Parameters:

c - the owning UIComponent

ctx - the FacesContext for the current request

Returns:

an ExpressionEvalMap for the specified component