Field Detail

• TYPE

  public static final String TYPE

  See Also:

  Constant Field Values

• RESOLVABLE_AT_DESIGN_TIME

  public static final String RESOLVABLE_AT_DESIGN_TIME

  See Also:

  Constant Field Values

Constructor Detail

• ELResolver

  public ELResolver()

Method Detail

• getValue

  public abstract Object getValue(ELContext context,
                Object base,
                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:

  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 Object invoke(ELContext context,
              Object base,
              Object method,
              Class<?>[] paramTypes,
              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 Class<?> getType(ELContext context,
                 Object base,
                 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:

  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,
              Object base,
              Object property,
              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:

  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,
                   Object base,
                   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:

  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 Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext context,
                                                  Object base)

• getCommonPropertyType

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