net.officefloor.plugin.work.clazz

Class ClassTask

java.lang.Object

net.officefloor.plugin.work.clazz.ClassTask

All Implemented Interfaces:

Task<ClassWork,Indexed,Indexed>

public class ClassTask
extends Object
implements Task<ClassWork,Indexed,Indexed>

Task to invoke a method on the Work object.

Author:

Daniel Sagenschneider

Constructor Summary

Constructors

Constructor and Description
ClassTask(Method method, boolean isStaticMethod, ParameterFactory[] parameterFactories) Initiate.

Method Summary

Modifier and Type	Method and Description
Object	doTask(TaskContext<ClassWork,Indexed,Indexed> context) Does the task.
Method	getMethod() Returns the Method for the Task.
static Object	invokeMethod(Object instance, Method method, Object[] parameters) Invokes the Method as the Task directly on the Object.
static Object	invokeMethod(Object instance, Method method, Object[] parameters, Map<Class<?>,Method> cache) Invokes the Method as the Task on a type.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassTask

public ClassTask(Method method,
                 boolean isStaticMethod,
                 ParameterFactory[] parameterFactories)

Initiate.

Parameters:

method - Method to invoke for this Task.

isStaticMethod - Indicates if the Method is static.

parameterFactories - ParameterFactory instances.

Method Detail

invokeMethod

public static Object invokeMethod(Object instance,
                                  Method method,
                                  Object[] parameters,
                                  Map<Class<?>,Method> cache)
                           throws Throwable

Invokes the Method as the Task on a type.

As the Object could be of any child of the type, the Method may need to be derived from the input instance.

Before the input instance is interrogated the Method is attempted to be retrieved from the cache. Should the Method not be in the cache it is derived and loaded into the cache.

Parameters:

instance - Instance. May be null if static Method.

method - Method template. Typically the Method from the type.

parameters - Parameters.

cache - Cache of the concrete Class to its corresponding Method.

Returns:

Method return value.

Throws:

Throwable - Failure invoking the Method.

invokeMethod

public static Object invokeMethod(Object instance,
                                  Method method,
                                  Object[] parameters)
                           throws Throwable

Invokes the Method as the Task directly on the Object.

Parameters:

instance - Instance. May be null if static Method.

method - Method.

parameters - Parameters.

Returns:

Method return value.

Throws:

Throwable - Failure invoking the Method.

getMethod

public Method getMethod()

Returns the Method for the Task.

Returns:

Method for the Task.

doTask

public Object doTask(TaskContext<ClassWork,Indexed,Indexed> context)
              throws Throwable

Description copied from interface: Task

Does the task.

Specified by:

doTask in interface Task<ClassWork,Indexed,Indexed>

Parameters:

context - TaskContext for the Task.

Returns:

Parameter for the next Task. This allows stringing Task instances together into a JobSequence.

Throws:

Throwable - Indicating failure of the Task.