Package edu.internet2.middleware.grouperClientExt.org.apache.commons.jexl2.internal

Class MethodExecutor

java.lang.Object

edu.internet2.middleware.grouperClientExt.org.apache.commons.jexl2.internal.AbstractExecutor

edu.internet2.middleware.grouperClientExt.org.apache.commons.jexl2.internal.AbstractExecutor.Method

edu.internet2.middleware.grouperClientExt.org.apache.commons.jexl2.internal.MethodExecutor

All Implemented Interfaces:

JexlMethod

public final class MethodExecutor
extends AbstractExecutor.Method

Specialized executor to invoke a method on an object.

Since:

2.0

Nested Class Summary

Nested classes/interfaces inherited from class edu.internet2.middleware.grouperClientExt.org.apache.commons.jexl2.internal.AbstractExecutor.Method

AbstractExecutor.Method.Parameter

Nested classes/interfaces inherited from class edu.internet2.middleware.grouperClientExt.org.apache.commons.jexl2.internal.AbstractExecutor

AbstractExecutor.Get, AbstractExecutor.Method, AbstractExecutor.Set

Field Summary

Fields inherited from class edu.internet2.middleware.grouperClientExt.org.apache.commons.jexl2.internal.AbstractExecutor.Method

key

Fields inherited from class edu.internet2.middleware.grouperClientExt.org.apache.commons.jexl2.internal.AbstractExecutor

method, objectClass, TRY_FAILED

Constructor Summary

Constructors

Constructor	Description
MethodExecutor(Introspector is, Object obj, String name, Object[] args)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
Object	execute(Object o, Object[] args)	Invokes the method to be executed.
protected Object[]	handleVarArg(Class<?> type, int index, Object[] actual)	Reassembles arguments if the method is a vararg method.
Object	tryExecute(String name, Object obj, Object[] args)	Tries to reuse this executor, checking that it is compatible with the actual set of arguments.

Methods inherited from class edu.internet2.middleware.grouperClientExt.org.apache.commons.jexl2.internal.AbstractExecutor.Method

getReturnType, getTargetProperty, invoke, tryInvoke

Methods inherited from class edu.internet2.middleware.grouperClientExt.org.apache.commons.jexl2.internal.AbstractExecutor

equals, equals, getMethod, getMethodName, getTargetClass, hashCode, isAlive, isCacheable, tryFailed

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.internet2.middleware.grouperClientExt.org.apache.commons.jexl2.introspection.JexlMethod

isCacheable, tryFailed

Constructor Details

MethodExecutor

public MethodExecutor(Introspector is,
 Object obj,
 String name,
 Object[] args)

Creates a new instance.

Parameters:

is - the introspector used to discover the method

obj - the object to find the method in

name - the method name

args - the method arguments

Method Details

execute

public Object execute(Object o,
 Object[] args)
               throws IllegalAccessException,
InvocationTargetException

Invokes the method to be executed.

Specified by:

execute in class AbstractExecutor.Method

Parameters:

o - the object to invoke the method upon

args - the method arguments

Returns:

the result of the method invocation

Throws:

IllegalAccessException - Method is inaccessible.

InvocationTargetException - Method body throws an exception.

tryExecute

public Object tryExecute(String name,
 Object obj,
 Object[] args)

Tries to reuse this executor, checking that it is compatible with the actual set of arguments.

Overrides:

tryExecute in class AbstractExecutor.Method

Parameters:

name - the method name

obj - the object to invoke the method upon

args - the method arguments

Returns:

the result of the method invocation or TRY_FAILED if checking failed.

handleVarArg

protected Object[] handleVarArg(Class<?> type,
 int index,
 Object[] actual)

Reassembles arguments if the method is a vararg method.

Parameters:

type - The vararg class type (aka component type of the expected array arg)

index - The index of the vararg in the method declaration (This will always be one less than the number of expected arguments.)

actual - The actual parameters being passed to this method

Returns:

The actual parameters adjusted for the varargs in order to fit the method declaration.