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.