Package org.apache.tools.ant.taskdefs

Class Ant

java.lang.Object

org.apache.tools.ant.ProjectComponent

org.apache.tools.ant.Task

org.apache.tools.ant.taskdefs.Ant

All Implemented Interfaces:

Cloneable

public class Ant
extends Task

Build a sub-project.

  <target name="foo" depends="init">
    <ant antfile="build.xml" target="bar" >
      <property name="property1" value="aaaaa" />
      <property name="foo" value="baz" />
    </ant>
  </target>

  <target name="bar" depends="init">
    <echo message="prop is ${property1} ${foo}" />
  </target>
 

Since:

Ant 1.1

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Ant.Reference	Helper class that implements the nested <reference> element of <ant> and <antcall>.
static class	Ant.TargetElement	Helper class that implements the nested <target> element of <ant> and <antcall>.

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
Ant()	simple constructor
Ant(Task owner)	create a task bound to its creator

Method Summary

Modifier and Type	Method	Description
void	addConfiguredTarget(Ant.TargetElement t)	Add a target to this Ant invocation.
void	addPropertyset(PropertySet ps)	Add a set of properties to pass to the new project.
void	addReference(Ant.Reference ref)	Add a Reference element identifying a data type to carry over to the new project.
Property	createProperty()	Property to pass to the new project.
void	execute()	Do the execution.
protected String	getDefaultBuildFile()	Get the default build file name to use when launching the task.
protected Project	getNewProject()	Get the (sub)-Project instance currently in use.
void	handleErrorFlush(String errorOutputToFlush)	Handle error output.
void	handleErrorOutput(String errorOutputToHandle)	Handle error output.
void	handleFlush(String toFlush)	Handles output.
int	handleInput(byte[] buffer, int offset, int length)	Handles input.
void	handleOutput(String outputToHandle)	Handles output.
void	init()	Creates a Project instance for the project to call.
void	setAntfile(String antFile)	The build file to use.
void	setDir(File dir)	The directory to use as a base directory for the new Ant project.
void	setInheritAll(boolean value)	If true, pass all properties to the new Ant project.
void	setInheritRefs(boolean value)	If true, pass all references to the new Ant project.
void	setOutput(String outputFile)	Set the filename to write the output to.
void	setTarget(String targetToAdd)	The target of the new Ant project to execute.
void	setUseNativeBasedir(boolean b)	Whether the basedir of the new project should be the same one as it would be when running the build file directly - independent of dir and/or inheritAll settings.

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

bindToOwner, getOwningTarget, getRuntimeConfigurableWrapper, getTaskName, getTaskType, getWrapper, 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 Details

Ant

public Ant()

simple constructor

Ant

public Ant(Task owner)

create a task bound to its creator

Parameters:

owner - owning task

Method Details

setUseNativeBasedir

public void setUseNativeBasedir(boolean b)

Whether the basedir of the new project should be the same one as it would be when running the build file directly - independent of dir and/or inheritAll settings.

Parameters:

b - boolean

Since:

Ant 1.8.0

setInheritAll

public void setInheritAll(boolean value)

If true, pass all properties to the new Ant project. Defaults to true.

Parameters:

value - if true pass all properties to the new Ant project.

setInheritRefs

public void setInheritRefs(boolean value)

If true, pass all references to the new Ant project. Defaults to false.

Parameters:

value - if true, pass all references to the new Ant project

init

public void init()

Creates a Project instance for the project to call.

Overrides:

init in class Task

handleOutput

public void handleOutput(String outputToHandle)

Handles output. Send it the the new project if is present, otherwise call the super class.

Overrides:

handleOutput in class Task

Parameters:

outputToHandle - The string output to output.

Since:

Ant 1.5

See Also:

• Task.handleOutput(String)

handleInput

public int handleInput(byte[] buffer,
 int offset,
 int length)
                throws IOException

Handles input. Delegate to the created project, if present, otherwise call the super class.

Overrides:

handleInput in class Task

Parameters:

buffer - the buffer into which data is to be read.

offset - the offset into the buffer at which data is stored.

length - the amount of data to read.

Returns:

the number of bytes read.

Throws:

IOException - if the data cannot be read.

Since:

Ant 1.6

See Also:

• Task.handleInput(byte[], int, int)

handleFlush

public void handleFlush(String toFlush)

Handles output. Send it the the new project if is present, otherwise call the super class.

Overrides:

handleFlush in class Task

Parameters:

toFlush - The string to output.

Since:

Ant 1.5.2

See Also:

• Task.handleFlush(String)

handleErrorOutput

public void handleErrorOutput(String errorOutputToHandle)

Handle error output. Send it the the new project if is present, otherwise call the super class.

Overrides:

handleErrorOutput in class Task

Parameters:

errorOutputToHandle - The string to output.

Since:

Ant 1.5

See Also:

• Task.handleErrorOutput(String)

handleErrorFlush

public void handleErrorFlush(String errorOutputToFlush)

Handle error output. Send it the the new project if is present, otherwise call the super class.

Overrides:

handleErrorFlush in class Task

Parameters:

errorOutputToFlush - The string to output.

Since:

Ant 1.5.2

See Also:

• Task.handleErrorFlush(String)

execute

public void execute()
             throws BuildException

Do the execution.

Overrides:

execute in class Task

Throws:

BuildException - if a target tries to call itself; probably also if a BuildException is thrown by the new project.

getDefaultBuildFile

protected String getDefaultBuildFile()

Get the default build file name to use when launching the task.

This function may be overridden by providers of custom ProjectHelper so they can easily implement their sublauncher.

Returns:

the name of the default file

Since:

Ant 1.8.0

setDir

public void setDir(File dir)

The directory to use as a base directory for the new Ant project. Defaults to the current project's basedir, unless inheritall has been set to false, in which case it doesn't have a default value. This will override the basedir setting of the called project.

Parameters:

dir - new directory as File.

setAntfile

public void setAntfile(String antFile)

The build file to use. Defaults to "build.xml". This file is expected to be a filename relative to the dir attribute given.

Parameters:

antFile - the String build file name.

setTarget

public void setTarget(String targetToAdd)

The target of the new Ant project to execute. Defaults to the new project's default target.

Parameters:

targetToAdd - the name of the target to invoke.

setOutput

public void setOutput(String outputFile)

Set the filename to write the output to. This is relative to the value of the dir attribute if it has been set or to the base directory of the current project otherwise.

Parameters:

outputFile - the name of the file to which the output should go.

createProperty

public Property createProperty()

Property to pass to the new project. The property is passed as a 'user property'.

Returns:

the created Property object.

addReference

public void addReference(Ant.Reference ref)

Add a Reference element identifying a data type to carry over to the new project.

Parameters:

ref - Reference to add.

addConfiguredTarget

public void addConfiguredTarget(Ant.TargetElement t)

Add a target to this Ant invocation.

Parameters:

t - the TargetElement to add.

Since:

Ant 1.6.3

addPropertyset

public void addPropertyset(PropertySet ps)

Add a set of properties to pass to the new project.

Parameters:

ps - PropertySet to add.

Since:

Ant 1.6

getNewProject

protected Project getNewProject()

Get the (sub)-Project instance currently in use.

Returns:

Project

Since:

Ant 1.7