org.trails.descriptor.annotation
Class ExpressionExtension

java.lang.Object
  org.trails.descriptor.annotation.ExpressionExtension

All Implemented Interfaces:

java.io.Serializable, IDescriptorExtension

Direct Known Subclasses:

InitialValueDescriptorExtension, PossibleValuesDescriptorExtension

public abstract class ExpressionExtension
extends java.lang.Object
implements IDescriptorExtension

See Also:

Serialized Form

Constructor Summary

ExpressionExtension(java.lang.String theExpression)
Creates a ExpressionExtension.

ExpressionExtension(java.lang.String theExpression, java.util.Map context)
Creates a ExpressionExtension.

Method Summary

java.lang.Object

evaluateExpresion(java.lang.Object model) Method used to initialize the value of the filtering property using the value of the filtered one (for example, initialize the country based on the value of the state property.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionExtension

public ExpressionExtension(java.lang.String theExpression)

Creates a ExpressionExtension.

Parameters:

theExpression - Ognl expression that evaluated gets a list of possible values to use with the current property, cannot be null.

ExpressionExtension

public ExpressionExtension(java.lang.String theExpression,
                           java.util.Map context)

Creates a ExpressionExtension.

Parameters:

theExpression - Ognl expression that evaluated gets a list of possible values to use with the current property, cannot be null.

context -

Method Detail

evaluateExpresion

public java.lang.Object evaluateExpresion(java.lang.Object model)
                                   throws ognl.OgnlException

Method used to initialize the value of the filtering property using the value of the filtered one (for example, initialize the country based on the value of the state property.

Parameters:

model - the model used by the edit page, cannot be null.

Returns:

Throws:

ognl.OgnlException