Class DependSet

java.lang.Object

org.apache.tools.ant.ProjectComponent

org.apache.tools.ant.Task

org.apache.tools.ant.taskdefs.MatchingTask

org.apache.tools.ant.taskdefs.DependSet

All Implemented Interfaces:

Cloneable, SelectorContainer

public class DependSet
extends MatchingTask

Examines and removes out of date target files. If any of the target files are out of date with respect to any of the source files, all target files are removed. This is useful where dependencies cannot be computed (for example, dynamically interpreted parameters or files that need to stay in synch but are not directly linked) or where the ant task in question could compute them but does not (for example, the linked DTD for an XML file using the XSLT task). nested arguments:

• sources (resource union describing the source resources to examine)
• srcfileset (fileset describing the source files to examine)
• srcfilelist (filelist describing the source files to examine)
• targets (path describing the target files to examine)
• targetfileset (fileset describing the target files to examine)
• targetfilelist (filelist describing the target files to examine)

At least one of both source and target entities is required.

This task will examine each of the sources against each of the target files. If any target files are out of date with respect to any of the sources, all targets are removed. If any sources or targets do not exist, all targets are removed. Hint: If missing files should be ignored, specify them as include patterns in filesets, rather than using filelists.

This task attempts to optimize speed of dependency checking by comparing only the dates of the oldest target file and the newest source.

Example uses:

• Record the fact that an XML file must be up to date with respect to its XSD (Schema file), even though the XML file itself includes no reference to its XSD.
• Record the fact that an XSL stylesheet includes other sub-stylesheets
• Record the fact that java files must be recompiled if the ant build file changes

Since:

Ant 1.4

Field Summary

Fields inherited from class MatchingTask

fileset

Modifier and Type	Field	Description
protected FileSet	fileset

Fields inherited from class Task

target, taskName, taskType, wrapper

Modifier and Type	Field	Description
protected Target	target	Deprecated. since 1.6.x.
protected String	taskName	Deprecated. since 1.6.x.
protected String	taskType	Deprecated. since 1.6.x.
protected RuntimeConfigurable	wrapper	Deprecated. since 1.6.x.

Fields inherited from class ProjectComponent

description, location, project

Modifier and Type	Field	Description
protected String	description	Deprecated. since 1.6.x.
protected Location	location	Deprecated. since 1.6.x.
protected Project	project	Deprecated. since 1.6.x.

Constructor Summary

Constructors

Constructor	Description
DependSet()

Method Summary

Modifier and Type	Method	Description
void	addSrcfilelist(FileList fl)	Add a list of source files.
void	addSrcfileset(FileSet fs)	Add a set of source files.
void	addTargetfilelist(FileList fl)	Add a list of target files.
void	addTargetfileset(FileSet fs)	Add a set of target files.
Union	createSources()	Create a nested sources element.
Path	createTargets()	Create a nested targets element.
void	execute()	Execute the task.
void	setVerbose(boolean b)	In verbose mode missing targets and sources as well as the modification times of the newest source and latest target will be logged as info.

Methods inherited from class MatchingTask

add, addAnd, addContains, addContainsRegexp, addCustom, addDate, addDepend, addDepth, addDifferent, addFilename, addMajority, addModified, addNone, addNot, addOr, addPresent, addSelector, addSize, addType, appendSelector, createExclude, createExcludesFile, createInclude, createIncludesFile, createPatternSet, getDirectoryScanner, getImplicitFileSet, getSelectors, hasSelectors, selectorCount, selectorElements, setCaseSensitive, setDefaultexcludes, setExcludes, setExcludesfile, setFollowSymlinks, setIncludes, setIncludesfile, setProject, XsetIgnore, XsetItems

Modifier and Type	Method	Description
void	add(FileSelector selector)	add an arbitrary selector
void	addAnd(AndSelector selector)	add an "And" selector entry on the selector list
void	addContains(ContainsSelector selector)	add a contains selector entry on the selector list
void	addContainsRegexp(ContainsRegexpSelector selector)	add a regular expression selector entry on the selector list
void	addCustom(ExtendSelector selector)	add an extended selector entry on the selector list
void	addDate(DateSelector selector)	add a selector date entry on the selector list
void	addDepend(DependSelector selector)	add a depends selector entry on the selector list
void	addDepth(DepthSelector selector)	add a depth selector entry on the selector list
void	addDifferent(DifferentSelector selector)	add a type selector entry on the type list
void	addFilename(FilenameSelector selector)	add a selector filename entry on the selector list
void	addMajority(MajoritySelector selector)	add a majority selector entry on the selector list
void	addModified(ModifiedSelector selector)	add the modified selector
void	addNone(NoneSelector selector)	add a "None" selector entry on the selector list
void	addNot(NotSelector selector)	add a "Not" selector entry on the selector list
void	addOr(OrSelector selector)	add an "Or" selector entry on the selector list
void	addPresent(PresentSelector selector)	add a present selector entry on the selector list
void	addSelector(SelectSelector selector)	add a "Select" selector entry on the selector list
void	addSize(SizeSelector selector)	add a selector size entry on the selector list
void	addType(TypeSelector selector)	add a type selector entry on the type list
void	appendSelector(FileSelector selector)	Add a new selector into this container.
PatternSet.NameEntry	createExclude()	add a name entry on the exclude list
PatternSet.NameEntry	createExcludesFile()	add a name entry on the include files list
PatternSet.NameEntry	createInclude()	add a name entry on the include list
PatternSet.NameEntry	createIncludesFile()	add a name entry on the include files list
PatternSet	createPatternSet()	add a set of patterns
protected DirectoryScanner	getDirectoryScanner(File baseDir)	Returns the directory scanner needed to access the files to process.
protected final FileSet	getImplicitFileSet()	Accessor for the implicit fileset.
FileSelector[]	getSelectors(Project p)	Returns the set of selectors as an array.
boolean	hasSelectors()	Indicates whether there are any selectors here.
int	selectorCount()	Gives the count of the number of selectors in this container
Enumeration<FileSelector>	selectorElements()	Returns an enumerator for accessing the set of selectors.
void	setCaseSensitive(boolean isCaseSensitive)	Sets case sensitivity of the file system
void	setDefaultexcludes(boolean useDefaultExcludes)	Sets whether default exclusions should be used or not.
void	setExcludes(String excludes)	Sets the set of exclude patterns.
void	setExcludesfile(File excludesfile)	Sets the name of the file containing the includes patterns.
void	setFollowSymlinks(boolean followSymlinks)	Sets whether or not symbolic links or Windows junctions should be followed.
void	setIncludes(String includes)	Sets the set of include patterns.
void	setIncludesfile(File includesfile)	Sets the name of the file containing the includes patterns.
void	setProject(Project project)	Sets the project object of this component.
void	XsetIgnore(String ignoreString)	List of filenames and directory names to not include.
void	XsetItems(String itemString)	Set this to be the items in the base directory that you want to be included.

Methods inherited from class 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

Modifier and Type	Method	Description
final void	bindToOwner(Task owner)	Bind a task to another; use this when configuring a newly created task to do work on behalf of another.
Target	getOwningTarget()	Returns the container target of this task.
RuntimeConfigurable	getRuntimeConfigurableWrapper()	Returns the wrapper used for runtime configuration.
String	getTaskName()	Returns the name to use in logging messages.
String	getTaskType()	Return the type of task.
protected RuntimeConfigurable	getWrapper()	Return the runtime configurable structure for this task.
protected void	handleErrorFlush(String output)	Handles an error line by logging it with the WARN priority.
protected void	handleErrorOutput(String output)	Handles an error output by logging it with the WARN priority.
protected void	handleFlush(String output)	Handles output by logging it with the INFO priority.
protected int	handleInput(byte[] buffer, int offset, int length)	Handle an input request by this task.
protected void	handleOutput(String output)	Handles output by logging it with the INFO priority.
void	init()	Called by the project to let the task initialize properly.
protected final boolean	isInvalid()	Has this task been marked invalid?
void	log(String msg)	Logs a message with the default (INFO) priority.
void	log(String msg, int msgLevel)	Logs a message with the given priority.
void	log(String msg, Throwable t, int msgLevel)	Logs a message with the given priority.
void	log(Throwable t, int msgLevel)	Logs a message with the given priority.
void	maybeConfigure()	Configures this task - if it hasn't been done already.
final void	perform()	Performs this task if it's still valid, or gets a replacement version and performs that otherwise.
void	reconfigure()	Force the task to be reconfigured from its RuntimeConfigurable.
void	setOwningTarget(Target target)	Sets the target container of this task.
void	setRuntimeConfigurableWrapper(RuntimeConfigurable wrapper)	Sets the wrapper to be used for runtime configuration.
void	setTaskName(String name)	Sets the name to use in logging messages.
void	setTaskType(String type)	Sets the name with which the task has been invoked.

Methods inherited from class ProjectComponent

clone, getDescription, getLocation, getProject, setDescription, setLocation

Modifier and Type	Method	Description
Object	clone()
String	getDescription()	Returns the description of the current action.
Location	getLocation()	Returns the file/location where this task was defined.
Project	getProject()	Returns the project to which this component belongs.
void	setDescription(String desc)	Sets a description of the current action.
void	setLocation(Location location)	Sets the file/location where this task was defined.

Methods inherited from class Object

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

Constructor Details

DependSet

public DependSet()

Method Details

createSources

public Union createSources()

Create a nested sources element.

Returns:

a Union instance.

addSrcfileset

public void addSrcfileset(FileSet fs)

Add a set of source files.

Parameters:

fs - the FileSet to add.

addSrcfilelist

public void addSrcfilelist(FileList fl)

Add a list of source files.

Parameters:

fl - the FileList to add.

createTargets

public Path createTargets()

Create a nested targets element.

Returns:

a Union instance.

addTargetfileset

public void addTargetfileset(FileSet fs)

Add a set of target files.

Parameters:

fs - the FileSet to add.

addTargetfilelist

public void addTargetfilelist(FileList fl)

Add a list of target files.

Parameters:

fl - the FileList to add.

setVerbose

public void setVerbose(boolean b)

In verbose mode missing targets and sources as well as the modification times of the newest source and latest target will be logged as info.

All deleted files will be logged as well.

Parameters:

b - boolean

Since:

Ant 1.8.0

execute

public void execute()
             throws BuildException

Execute the task.

Overrides:

execute in class Task

Throws:

BuildException - if errors occur.