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java.lang.Objectorg.apache.commons.betwixt.expression.MethodExpression
MethodExpression evaluates a method on the current bean context.
| Field Summary | |
private Method |
method
The method to call on the bean |
protected static Object[] |
NULL_ARGUMENTS
null arguments |
protected static Class[] |
NULL_CLASSES
null classes |
| Constructor Summary | |
MethodExpression()
Base constructor |
|
MethodExpression(Method method)
Convenience constructor sets method property |
|
| Method Summary | |
Object |
evaluate(Context context)
Evaluate by calling the read method on the current bean |
protected Method |
findAlternateMethod(Class type,
Method method)
Tries to find an alternate method for the given type using interfaces which gets around the problem of inner classes, such as on Map.Entry implementations. |
protected Object[] |
getArguments()
Allows derived objects to create arguments for the method call |
Method |
getMethod()
Gets the method used to evaluate this expression. |
protected void |
handleException(Context context,
Exception e)
Log error to context's logger. |
void |
setMethod(Method method)
Sets the method used to evaluate this expression |
String |
toString()
Returns something useful for logging. |
void |
update(Context context,
String newValue)
Do nothing. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
protected static Object[] NULL_ARGUMENTS
protected static Class[] NULL_CLASSES
private Method method
| Constructor Detail |
public MethodExpression()
public MethodExpression(Method method)
method - the Method whose return value when invoked on the bean
will the value of this expression| Method Detail |
public Object evaluate(Context context)
evaluate in interface Expressioncontext - the context against which this expression will be evaluated
public void update(Context context,
String newValue)
update in interface Expressioncontext - update this ContextnewValue - the new value for this expressionExpressionpublic Method getMethod()
public void setMethod(Method method)
method - method whose value (when invoked against the context's bean) will be used
to evaluate this expressionprotected Object[] getArguments()
NULL_ARGUMENTS
protected Method findAlternateMethod(Class type,
Method method)
type - the Class whose methods are to be searchedmethod - the Method for which an alternative is to be search for
protected void handleException(Context context,
Exception e)
Log error to context's logger.
Allows derived objects to handle exceptions differently.
context - the Context being evaluated when the exception occurede - the exception to handlepublic String toString()
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