org.mule.extensions.java.internal.function

Class JavaModuleFunctions

java.lang.Object

org.mule.extensions.java.internal.function.JavaModuleFunctions

public class JavaModuleFunctions
extends Object

The ExpressionFunctions exposed by the JavaModule that extends the EL with further Java related functions.

Since:

1.0

Constructor Summary

Constructors

Constructor and Description
JavaModuleFunctions()

Method Summary

Modifier and Type	Method and Description
Object	invoke(String clazz, String methodName, Object instance, Map<String,org.mule.runtime.api.metadata.TypedValue<Object>> args) Function that allows the user to invoke methods with the provided args on the given instance.
boolean	isInstanceOf(Object instance, String clazz) Operation that allows the user to check that a given instance is an instanceof the specified class.

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaModuleFunctions

public JavaModuleFunctions()

Method Detail

invoke

public Object invoke(@Alias(value="class") @Summary(value="Fully qualified name of the Class containing the referenced Method")
                     String clazz,
                     @Alias(value="method") @Summary(value="Represents the Method signature containing the method name and it\'s argument types.")
                     String methodName,
                     Object instance,
                     @Optional
                     Map<String,org.mule.runtime.api.metadata.TypedValue<Object>> args)
              throws NoSuchMethodModuleException,
                     ClassNotFoundModuleException,
                     WrongTypeModuleException,
                     ArgumentMismatchModuleException,
                     InvocationModuleException

Function that allows the user to invoke methods with the provided args on the given instance. The identifier of the Method to be invoked includes the class and method names, being the method a full description of its signature including the types of each parameter.

For example, if we want to invoke the method echo with signature public String echo(String msg) which belongs to Class org.bar.Foo, then the identifier of the method will be "echo(String)"

Parameters:

clazz - the fully qualified name of the class whose instance is being injected

methodName - the unique identifier for the method to be invoked

instance - the instance on which the method will be invoked

args - the arguments used to invoke the given Method

Returns:

the result of the Method invocation with the given args

Throws:

ClassNotFoundModuleException - if the given class is not found in the current context

NoSuchMethodModuleException - if the given class does not declare a method with the given signature

ArgumentMismatchModuleException - if the method requires a different set of arguments than the ones provided

WrongTypeModuleException - if the given instance is not an instance of the expected class

InvocationModuleException - if an error occurs during the execution of the method

isInstanceOf

public boolean isInstanceOf(Object instance,
                            @Alias(value="class")
                            String clazz)
                     throws ClassNotFoundModuleException

Operation that allows the user to check that a given instance is an instanceof the specified class.

Parameters:

clazz - the fully qualified name of the expected Class for the instance

instance - the object whose type is expected to be an instanceof of the given class

Throws:

ClassNotFoundModuleException - if the given class is not found in the current context