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:

java.lang.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 2.1 APIs, even if we run in Java 6.

No JDK 1.5 code here, please. This allows us to detect "require JDK5" bug nicely.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	ProtectedTask.AntElement Captures the elements and attributes.

Field Summary

Fields

Modifier and Type	Field and Description
private ProtectedTask.AntElement	root

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 and Description
ProtectedTask()

Method Summary

Modifier and Type	Method and Description
protected abstract java.lang.ClassLoader	createClassLoader() Creates a protective class loader that will host the actual task.
java.lang.Object	createDynamicElement(java.lang.String name)
void	execute()
protected abstract java.lang.String	getCoreClassName() Returns the name of the class that extends Task.
private java.lang.ClassLoader	getParentClassLoader(java.lang.ClassLoader cl)
private java.lang.ClassLoader	getPCL(java.lang.ClassLoader cl)
void	setDynamicAttribute(java.lang.String name, java.lang.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

Field Detail

root

private final ProtectedTask.AntElement root

Constructor Detail

ProtectedTask

public ProtectedTask()

Method Detail

setDynamicAttribute

public void setDynamicAttribute(java.lang.String name,
                                java.lang.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 java.lang.Object createDynamicElement(java.lang.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 java.lang.String getCoreClassName()

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

createClassLoader

protected abstract java.lang.ClassLoader createClassLoader()
                                                    throws java.lang.ClassNotFoundException,
                                                           java.io.IOException

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

Throws:

java.lang.ClassNotFoundException

java.io.IOException

getParentClassLoader

private java.lang.ClassLoader getParentClassLoader(java.lang.ClassLoader cl)

getPCL

private java.lang.ClassLoader getPCL(java.lang.ClassLoader cl)