javax.el

Class BeanELResolver

java.lang.Object

javax.el.ELResolver

javax.el.BeanELResolver

public class BeanELResolver
extends ELResolver

Resolves variables and properties on JavaBeans.

Since:

2.1

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	BeanELResolver.BeanProperties
protected static class	BeanELResolver.BeanProperty

Field Summary

Fields inherited from class javax.el.ELResolver

RESOLVABLE_AT_DESIGN_TIME, TYPE

Constructor Summary

Constructors

Constructor and Description
BeanELResolver() New read/write bean resolver.
BeanELResolver(boolean readOnly) New bean resolver with the specified read-only property.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Class	getCommonPropertyType(ELContext context, java.lang.Object base) Returns the most general class of properties in the base object.
java.util.Iterator<java.beans.FeatureDescriptor>	getFeatureDescriptors(ELContext context, java.lang.Object base) Returns metadata about the variables or properties within the specified base object.
java.lang.Class	getType(ELContext context, java.lang.Object base, java.lang.Object property) Returns the class of the specified property of the base object.
java.lang.Object	getValue(ELContext context, java.lang.Object base, java.lang.Object property) Resolves the specified property of the base object.
boolean	isReadOnly(ELContext context, java.lang.Object base, java.lang.Object property) Indicates whether the specified property of the base object is read-only.
void	setValue(ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value) Sets the value of the specified property of the base object.

Methods inherited from class java.lang.Object

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

Constructor Detail

BeanELResolver

public BeanELResolver()

New read/write bean resolver.

BeanELResolver

public BeanELResolver(boolean readOnly)

New bean resolver with the specified read-only property.

Method Detail

getValue

public java.lang.Object getValue(ELContext context,
                        java.lang.Object base,
                        java.lang.Object property)
                          throws java.lang.NullPointerException,
                                 PropertyNotFoundException,
                                 ELException

Description copied from class: ELResolver

Resolves the specified property of the base object.

Specified by:

getValue in class ELResolver

Parameters:

context - the evaluation context

base - the target of the operation

property - the property of the base object

Throws:

java.lang.NullPointerException

PropertyNotFoundException

ELException

getType

public java.lang.Class getType(ELContext context,
                      java.lang.Object base,
                      java.lang.Object property)
                        throws java.lang.NullPointerException,
                               PropertyNotFoundException,
                               ELException

Description copied from class: ELResolver

Returns the class of the specified property of the base object.

Specified by:

getType in class ELResolver

Parameters:

context - the evaluation context

base - the target of the operation

property - the property of the base object

Throws:

java.lang.NullPointerException

PropertyNotFoundException

ELException

setValue

public void setValue(ELContext context,
            java.lang.Object base,
            java.lang.Object property,
            java.lang.Object value)
              throws java.lang.NullPointerException,
                     PropertyNotFoundException,
                     PropertyNotWritableException,
                     ELException

Description copied from class: ELResolver

Sets the value of the specified property of the base object.

Specified by:

setValue in class ELResolver

Parameters:

context - the evaluation context

base - the target of the operation

property - the property of the base object

value - the new value of the property

Throws:

PropertyNotWritableException - if the property is read-only

java.lang.NullPointerException

PropertyNotFoundException

ELException

isReadOnly

public boolean isReadOnly(ELContext context,
                 java.lang.Object base,
                 java.lang.Object property)
                   throws java.lang.NullPointerException,
                          PropertyNotFoundException,
                          ELException

Description copied from class: ELResolver

Indicates whether the specified property of the base object is read-only.

Specified by:

isReadOnly in class ELResolver

Parameters:

context - the evaluation context

base - the target of the operation

property - the property of the base object

Throws:

java.lang.NullPointerException

PropertyNotFoundException

ELException

getFeatureDescriptors

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

Description copied from class: ELResolver

Returns metadata about the variables or properties within the specified base object.

Specified by:

getFeatureDescriptors in class ELResolver

Parameters:

context - the evaluation context

base - the target of the operation

getCommonPropertyType

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

Description copied from class: ELResolver

Returns the most general class of properties in the base object.

Specified by:

getCommonPropertyType in class ELResolver

Parameters:

context - the evaluation context

base - the target of the operation