Package com.sun.istack.tools

Class ProtectedTask

java.lang.Object

org.apache.tools.ant.ProjectComponent

org.apache.tools.ant.Task

com.sun.istack.tools.ProtectedTask

All Implemented Interfaces:

Cloneable, org.apache.tools.ant.DynamicAttribute, org.apache.tools.ant.DynamicConfigurator, org.apache.tools.ant.DynamicElement

public abstract class ProtectedTask
extends org.apache.tools.ant.Task
implements org.apache.tools.ant.DynamicConfigurator

Executes a Task in a special class loader that allows us to control where to load particular APIs.

Author:

Kohsuke Kawaguchi, Bhakti Mehta

Field Summary

Fields inherited from class org.apache.tools.ant.Task

target, taskName, taskType, wrapper

Fields inherited from class org.apache.tools.ant.ProjectComponent

description, location, project

Constructor Summary

Constructors

Constructor	Description
ProtectedTask()

Method Summary

Modifier and Type	Method	Description
protected abstract ClassLoader	createClassLoader()	Creates a protective class loader that will host the actual task.
Object	createDynamicElement(String name)
void	execute()
protected abstract String	getCoreClassName()	Returns the name of the class that extends Task.This class will be loaded int the protected classloader.
void	setDynamicAttribute(String name, String value)

Methods inherited from class org.apache.tools.ant.Task

bindToOwner, getOwningTarget, getRuntimeConfigurableWrapper, getTaskName, getTaskType, getWrapper, handleErrorFlush, handleErrorOutput, handleFlush, handleInput, handleOutput, init, isInvalid, log, log, log, log, maybeConfigure, perform, reconfigure, setOwningTarget, setRuntimeConfigurableWrapper, setTaskName, setTaskType

Methods inherited from class org.apache.tools.ant.ProjectComponent

clone, getDescription, getLocation, getProject, setDescription, setLocation, setProject

Methods inherited from class java.lang.Object

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

Constructor Detail

ProtectedTask

public ProtectedTask()

Method Detail

setDynamicAttribute

public void setDynamicAttribute(String name,
                                String value)
                         throws org.apache.tools.ant.BuildException

Specified by:

setDynamicAttribute in interface org.apache.tools.ant.DynamicAttribute

Throws:

org.apache.tools.ant.BuildException

createDynamicElement

public Object createDynamicElement(String name)
                            throws org.apache.tools.ant.BuildException

Specified by:

createDynamicElement in interface org.apache.tools.ant.DynamicElement

Throws:

org.apache.tools.ant.BuildException

execute

public void execute()
             throws org.apache.tools.ant.BuildException

Overrides:

execute in class org.apache.tools.ant.Task

Throws:

org.apache.tools.ant.BuildException

getCoreClassName

protected abstract String getCoreClassName()

Returns the name of the class that extends Task.This class will be loaded int the protected classloader.

Returns:

Task class name

createClassLoader

protected abstract ClassLoader createClassLoader()
                                          throws ClassNotFoundException,
                                                 IOException

Creates a protective class loader that will host the actual task.

Returns:

ClassLoader use d for task execution

Throws:

ClassNotFoundException - if required APIs are not found

IOException - if error happens