Package org.apache.tools.ant.taskdefs.optional

Class XMLValidateTask

java.lang.Object

org.apache.tools.ant.ProjectComponent

org.apache.tools.ant.Task

org.apache.tools.ant.taskdefs.optional.XMLValidateTask

All Implemented Interfaces:

Cloneable

Direct Known Subclasses:

SchemaValidate

public class XMLValidateTask
extends Task

Checks XML files are valid (or only well formed). The task uses the SAX2 parser implementation provided by JAXP by default (probably the one that is used by Ant itself), but one can specify any SAX1/2 parser if needed.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	XMLValidateTask.Attribute	The class to create to set a feature of the parser.
static final class	XMLValidateTask.Property	A Parser property.
protected class	XMLValidateTask.ValidatorErrorHandler	ValidatorErrorHandler role : log SAX parse exceptions, remember if an error occurred

Field Summary

Fields

Modifier and Type	Field	Description
protected Path	classpath
protected XMLValidateTask.ValidatorErrorHandler	errorHandler
protected boolean	failOnError
protected File	file	file to be validated
protected Vector<FileSet>	filesets	sets of file to be validated
protected static final String	INIT_FAILED_MSG
protected boolean	lenient
static final String	MESSAGE_FILES_VALIDATED	Message for successful validation
protected String	readerClassName
protected boolean	warn
protected XMLReader	xmlReader	the parser is viewed as a SAX2 XMLReader.

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
XMLValidateTask()

Method Summary

Modifier and Type	Method	Description
void	addConfiguredXMLCatalog(XMLCatalog catalog)	add an XMLCatalog as a nested element; optional.
void	addFileset(FileSet set)	specify a set of file to be checked
protected void	cleanup()	Cleans up resources.
XMLValidateTask.Attribute	createAttribute()	Add an attribute nested element.
Path	createClasspath()
protected XMLReader	createDefaultReader()	Create a reader if the use of the class did not specify another one.
DTDLocation	createDTD()	Create a DTD location record; optional.
XMLValidateTask.Property	createProperty()	Creates a property.
protected XMLReader	createXmlReader()	create the XML reader.
protected boolean	doValidate(File afile)	parse the file
void	execute()	execute the task
protected EntityResolver	getEntityResolver()	accessor to the xmlCatalog used in the task
protected XMLReader	getXmlReader()	get the XML reader.
void	init()	Called by the project to let the task initialize properly.
protected void	initValidator()	init the parser : load the parser class, and set features if necessary It is only after this that the reader is valid
protected boolean	isSax1Parser()	test that returns true if we are using a SAX1 parser.
protected void	onSuccessfulValidation(int fileProcessed)	handler called on successful file validation.
void	setClassName(String className)	Specify the class name of the SAX parser to be used.
void	setClasspath(Path classpath)	Specify the classpath to be searched to load the parser (optional)
void	setClasspathRef(Reference r)	Where to find the parser class; optional.
void	setFailOnError(boolean fail)	Specify how parser error are to be handled.
protected void	setFeature(String feature, boolean value)	Set a feature on the parser.
void	setFile(File file)	specify the file to be checked; optional.
void	setLenient(boolean bool)	Specify whether the parser should be validating.
protected void	setProperty(String name, String value)	Sets a property.
void	setWarn(boolean bool)	Specify how parser error are to be handled.

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

bindToOwner, getOwningTarget, getRuntimeConfigurableWrapper, getTaskName, getTaskType, getWrapper, handleErrorFlush, handleErrorOutput, handleFlush, handleInput, handleOutput, 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 Details

INIT_FAILED_MSG

protected static final String INIT_FAILED_MSG

See Also:

• Constant Field Values

failOnError

protected boolean failOnError

warn

protected boolean warn

lenient

protected boolean lenient

readerClassName

protected String readerClassName

file

protected File file

file to be validated

filesets

protected Vector<FileSet> filesets

sets of file to be validated

classpath

protected Path classpath

xmlReader

protected XMLReader xmlReader

the parser is viewed as a SAX2 XMLReader. If a SAX1 parser is specified, it's wrapped in an adapter that make it behave as a XMLReader. a more 'standard' way of doing this would be to use the JAXP1.1 SAXParser interface.

errorHandler

protected XMLValidateTask.ValidatorErrorHandler errorHandler

MESSAGE_FILES_VALIDATED

public static final String MESSAGE_FILES_VALIDATED

Message for successful validation

See Also:

• Constant Field Values

Constructor Details

XMLValidateTask

public XMLValidateTask()

Method Details

setFailOnError

public void setFailOnError(boolean fail)

Specify how parser error are to be handled. Optional, default is true.

If set to true (default), throw a buildException if the parser yields an error.

Parameters:

fail - if set to false do not fail on error

setWarn

public void setWarn(boolean bool)

Specify how parser error are to be handled.

If set to true (default), log a warn message for each SAX warn event.

Parameters:

bool - if set to false do not send warnings

setLenient

public void setLenient(boolean bool)

Specify whether the parser should be validating. Default is true.

If set to false, the validation will fail only if the parsed document is not well formed XML.

this option is ignored if the specified class with setClassName(String) is not a SAX2 XMLReader.

Parameters:

bool - if set to false only fail on malformed XML

setClassName

public void setClassName(String className)

Specify the class name of the SAX parser to be used. (optional)

Parameters:

className - should be an implementation of SAX2 org.xml.sax.XMLReader or SAX2 org.xml.sax.Parser.

If className is an implementation of org.xml.sax.Parser, setLenient(boolean), will be ignored.

If not set, the default will be used.

See Also:

• XMLReader
• Parser

setClasspath

public void setClasspath(Path classpath)

Specify the classpath to be searched to load the parser (optional)

Parameters:

classpath - the classpath to load the parser

createClasspath

public Path createClasspath()

Returns:

the classpath created

See Also:

• setClasspath(org.apache.tools.ant.types.Path)

setClasspathRef

public void setClasspathRef(Reference r)

Where to find the parser class; optional.

Parameters:

r - reference to a classpath defined elsewhere

See Also:

• setClasspath(org.apache.tools.ant.types.Path)

setFile

public void setFile(File file)

specify the file to be checked; optional.

Parameters:

file - the file to be checked

addConfiguredXMLCatalog

public void addConfiguredXMLCatalog(XMLCatalog catalog)

add an XMLCatalog as a nested element; optional.

Parameters:

catalog - XMLCatalog to use

addFileset

public void addFileset(FileSet set)

specify a set of file to be checked

Parameters:

set - the fileset to check

createAttribute

public XMLValidateTask.Attribute createAttribute()

Add an attribute nested element. This is used for setting arbitrary features of the SAX parser. Valid attributes include

Returns:

attribute created

Since:

ant1.6

createProperty

public XMLValidateTask.Property createProperty()

Creates a property.

Returns:

a property.

Since:

ant 1.6.2

init

public void init()
          throws BuildException

Called by the project to let the task initialize properly.

Overrides:

init in class Task

Throws:

BuildException - if something goes wrong with the build

createDTD

public DTDLocation createDTD()

Create a DTD location record; optional. This stores the location of a DTD. The DTD is identified by its public Id.

Returns:

created DTD location

getEntityResolver

protected EntityResolver getEntityResolver()

accessor to the xmlCatalog used in the task

Returns:

xmlCatalog reference

getXmlReader

protected XMLReader getXmlReader()

get the XML reader. Non-null only after initValidator(). If the reader is an instance of ParserAdapter then the parser is a SAX1 parser, and you cannot call setFeature(String, boolean) or setProperty(String, String) on it.

Returns:

the XML reader or null.

execute

public void execute()
             throws BuildException

execute the task

Overrides:

execute in class Task

Throws:

BuildException - if failonerror is true and an error happens

onSuccessfulValidation

protected void onSuccessfulValidation(int fileProcessed)

handler called on successful file validation.

Parameters:

fileProcessed - number of files processed.

initValidator

protected void initValidator()

init the parser : load the parser class, and set features if necessary It is only after this that the reader is valid

Throws:

BuildException - if something went wrong

isSax1Parser

protected boolean isSax1Parser()

test that returns true if we are using a SAX1 parser.

Returns:

true when a SAX1 parser is in use

createXmlReader

protected XMLReader createXmlReader()

create the XML reader. This is one by instantiating anything specified by readerClassName, falling back to a default reader if not. If the returned reader is an instance of ParserAdapter then we have created and wrapped a SAX1 parser.

Returns:

the new XMLReader.

cleanup

protected void cleanup()

Cleans up resources.

Since:

Ant 1.8.0

createDefaultReader

protected XMLReader createDefaultReader()

Create a reader if the use of the class did not specify another one. If a BuildException is thrown, the caller may revert to an alternate reader.

Returns:

a new reader.

Throws:

BuildException - if something went wrong

setFeature

protected void setFeature(String feature,
 boolean value)
                   throws BuildException

Set a feature on the parser.

Parameters:

feature - the name of the feature to set

value - the value of the feature

Throws:

BuildException - if the feature was not supported

setProperty

protected void setProperty(String name,
 String value)
                    throws BuildException

Sets a property.

Parameters:

name - a property name

value - a property value.

Throws:

BuildException - if an error occurs.

BuildException - if the property was not supported

doValidate

protected boolean doValidate(File afile)

parse the file

Parameters:

afile - the file to validate.

Returns:

true if the file validates.