Module jakarta.faces

Package com.sun.faces.el

Class CompositeComponentAttributesELResolver

java.lang.Object

jakarta.el.ELResolver

com.sun.faces.el.CompositeComponentAttributesELResolver

public class CompositeComponentAttributesELResolver
extends ELResolver

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

Constructor Summary

Constructors

Constructor	Description
CompositeComponentAttributesELResolver()

Method Summary

Modifier and Type	Method	Description
Class<?>	getCommonPropertyType(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
Class<?>	getType(ELContext context, Object base, Object property)	Readonly, so return null.
Object	getValue(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(ELContext context, Object base, Object property)	Readonly, so return true
void	setValue(ELContext context, Object base, Object property, Object value)	This is a no-op.

Methods inherited from class jakarta.el.ELResolver

convertToType, invoke

Methods inherited from class java.lang.Object

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

Constructor Details

CompositeComponentAttributesELResolver

public CompositeComponentAttributesELResolver()

Method Details

getValue

public Object getValue(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(jakarta.faces.component.UIComponent)) and returning that value.

Specified by:

getValue in class ELResolver

Parameters:

context - The context of this evaluation.

base - The base object whose property value is to be returned, or null to resolve a top-level variable.

property - The property or variable to be resolved.

Returns:

If the propertyResolved property of ELContext was set to true, then the result of the variable or property resolution; otherwise undefined.

See Also:

• ELResolver.getValue(jakarta.el.ELContext, Object, Object)
• CompositeComponentAttributesELResolver.ExpressionEvalMap

getType

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

Readonly, so return null.

Specified by:

getType in class ELResolver

Parameters:

context - The context of this evaluation.

base - The base object whose property value is to be analyzed, or null to analyze a top-level variable.

property - The property or variable to return the acceptable type for.

Returns:

If the propertyResolved property of ELContext was set to true, the most general acceptable type which must be null if the either the property or the resolver is read-only; otherwise undefined

See Also:

• ELResolver.getType(jakarta.el.ELContext, Object, Object)

setValue

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

This is a no-op.

Specified by:

setValue in class ELResolver

Parameters:

context - The context of this evaluation.

base - The base object whose property value is to be set, or null to set a top-level variable.

property - The property or variable to be set.

value - The value to set the property or variable to.

See Also:

• ELResolver.setValue(jakarta.el.ELContext, Object, Object, Object)

isReadOnly

public boolean isReadOnly(ELContext context,
 Object base,
 Object property)

Readonly, so return true

Specified by:

isReadOnly in class ELResolver

Parameters:

context - The context of this evaluation.

base - The base object whose property value is to be analyzed, or null to analyze a top-level variable.

property - The property or variable to return the read-only status for.

Returns:

If the propertyResolved property of ELContext was set to true, then true if the property is read-only or false if not; otherwise undefined.

See Also:

• ELResolver.isReadOnly(jakarta.el.ELContext, Object, Object)

getCommonPropertyType

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

attrs is considered a String property.

Specified by:

getCommonPropertyType in class ELResolver

Parameters:

context - The context of this evaluation.

base - The base object to return the most general property type for, or null to enumerate the set of top-level variables that this resolver can evaluate.

Returns:

null if this ELResolver does not know how to handle the given base object; otherwise Object.class if any type of property is accepted; otherwise the most general property type accepted for the given base.

See Also:

• ELResolver.getCommonPropertyType(jakarta.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