Field Detail

• TYPE

  public static final java.lang.String TYPE

  See Also:

  Constant Field Values

• RESOLVABLE_AT_DESIGN_TIME

  public static final java.lang.String RESOLVABLE_AT_DESIGN_TIME

  See Also:

  Constant Field Values

Constructor Detail

• ELResolver

  public ELResolver()

Method Detail

• getValue

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

  Parameters:

  context - The EL context for this evaluation

  base - The base object on which the property is to be found

  property - The property whose value is to be returned

  Returns:

  the value of the provided property

  Throws:

  java.lang.NullPointerException - If the supplied context is null

  PropertyNotFoundException - If the base/property combination provided to the resolver is one that the resolver can handle but no match was found or a match was found but was not readable

  ELException - Wraps any exception throw whilst resolving the property

• invoke

  public java.lang.Object invoke(ELContext context,
                        java.lang.Object base,
                        java.lang.Object method,
                        java.lang.Class<?>[] paramTypes,
                        java.lang.Object[] params)

  Invokes a method on the the given object. This default implementation always returns null.

  Parameters:

  context - The EL context for this evaluation

  base - The base object on which the method is to be found

  method - The method to invoke

  paramTypes - The types of the parameters of the method to invoke

  params - The parameters with which to invoke the method

  Returns:

  Always null

  Since:

  EL 2.2

• getType

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

  Parameters:

  context - The EL context for this evaluation

  base - The base object on which the property is to be found

  property - The property whose type is to be returned

  Returns:

  the type of the provided property

  Throws:

  java.lang.NullPointerException - If the supplied context is null

  PropertyNotFoundException - If the base/property combination provided to the resolver is one that the resolver can handle but no match was found or a match was found but was not readable

  ELException - Wraps any exception throw whilst resolving the property

• setValue

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

  Parameters:

  context - The EL context for this evaluation

  base - The base object on which the property is to be found

  property - The property whose value is to be set

  value - The value to set the property to

  Throws:

  java.lang.NullPointerException - If the supplied context is null

  PropertyNotFoundException - If the base/property combination provided to the resolver is one that the resolver can handle but no match was found

  PropertyNotWritableException - If the base/property combination provided to the resolver is one that the resolver can handle but the property was not writable

  ELException - Wraps any exception throw whilst resolving the property

• isReadOnly

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

  Parameters:

  context - The EL context for this evaluation

  base - The base object on which the property is to be found

  property - The property to be checked for read only status

  Returns:

  true if the identified property is read only, otherwise false

  Throws:

  java.lang.NullPointerException - If the supplied context is null

  PropertyNotFoundException - If the base/property combination provided to the resolver is one that the resolver can handle but no match was found

  ELException - Wraps any exception throw whilst resolving the property

• getFeatureDescriptors

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

• getCommonPropertyType

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

• convertToType

  public java.lang.Object convertToType(ELContext context,
                               java.lang.Object obj,
                               java.lang.Class<?> type)

  Converts the given object to the given type. This default implementation always returns null.

  Parameters:

  context - The EL context for this evaluation

  obj - The object to convert

  type - The type to which the object should be converted

  Returns:

  Always null

  Since:

  EL 3.0