groovyx.gpars
Class DataflowMessagingRunnable

java.lang.Object
  groovy.lang.GroovyObjectSupport
      groovy.lang.Closure
          groovyx.gpars.DataflowMessagingRunnable

All Implemented Interfaces:

groovy.lang.GroovyCallable, groovy.lang.GroovyObject, java.io.Serializable, java.lang.Cloneable, java.lang.Runnable, java.util.concurrent.Callable

public abstract class DataflowMessagingRunnable
extends groovy.lang.Closure

Represents a multi-argument Closure when using GPars dataflow operators and selectors through the Java API. The doRun() method is meant to be defined by implementers to specify the closure body.

Author:

Vaclav Pech

See Also:

Serialized Form

Field Summary

private java.lang.Class[]	defaultParamTypes
private int	numberOfParameters
private static long	serialVersionUID

Fields inherited from class groovy.lang.Closure

DELEGATE_FIRST, DELEGATE_ONLY, DONE, IDENTITY, maximumNumberOfParameters, OWNER_FIRST, OWNER_ONLY, parameterTypes, SKIP, TO_SELF

Constructor Summary

protected	DataflowMessagingRunnable(int numberOfParameters)
protected	DataflowMessagingRunnable(java.lang.Object owner, int numberOfParameters)

Method Summary

java.lang.Object	call()
java.lang.Object	call(java.lang.Object... args)
protected abstract void	doRun(java.lang.Object... arguments) Defines the action performed by the Runnable
int	getMaximumNumberOfParameters()
DataflowProcessor	getOwningProcessor() Retrieves the owning processor (operator or selector) giving the DataflowMessagingRunnable a way to call methods like bindOutput()
java.lang.Class[]	getParameterTypes() Returns types expected by the Runnable.

Methods inherited from class groovy.lang.Closure

asWritable, call, clone, curry, curry, dehydrate, getDelegate, getDirective, getOwner, getProperty, getResolveStrategy, getThisObject, isCase, leftShift, leftShift, memoize, memoizeAtLeast, memoizeAtMost, memoizeBetween, ncurry, ncurry, rcurry, rcurry, rehydrate, rightShift, run, setDelegate, setDirective, setProperty, setResolveStrategy, throwRuntimeException, trampoline, trampoline

Methods inherited from class groovy.lang.GroovyObjectSupport

getMetaClass, invokeMethod, setMetaClass

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

defaultParamTypes

private final java.lang.Class[] defaultParamTypes

numberOfParameters

private final int numberOfParameters

Constructor Detail

DataflowMessagingRunnable

protected DataflowMessagingRunnable(int numberOfParameters)

DataflowMessagingRunnable

protected DataflowMessagingRunnable(java.lang.Object owner,
                                    int numberOfParameters)

Method Detail

getOwningProcessor

public DataflowProcessor getOwningProcessor()

Retrieves the owning processor (operator or selector) giving the DataflowMessagingRunnable a way to call methods like bindOutput()

Returns:

The owning processor

getMaximumNumberOfParameters

public int getMaximumNumberOfParameters()

Overrides:

getMaximumNumberOfParameters in class groovy.lang.Closure

getParameterTypes

public java.lang.Class[] getParameterTypes()

Returns types expected by the Runnable. By default instances of the Object class are demanded. The size of the array must match the numberOfParameters parameter to the constructor.

Overrides:

getParameterTypes in class groovy.lang.Closure

Returns:

Types of expected arguments

call

public final java.lang.Object call()

Specified by:

call in interface java.util.concurrent.Callable

Overrides:

call in class groovy.lang.Closure

call

public final java.lang.Object call(java.lang.Object... args)

Overrides:

call in class groovy.lang.Closure

doRun

protected abstract void doRun(java.lang.Object... arguments)

Defines the action performed by the Runnable

Parameters:

arguments - The parameters passed from the caller to the closure