Package org.custommonkey.xmlunit

Class Validator

java.lang.Object

org.xml.sax.helpers.DefaultHandler

org.custommonkey.xmlunit.Validator

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler

public class Validator
extends DefaultHandler
implements ErrorHandler

Validates XML against its internal or external DOCTYPE, or a completely different DOCTYPE. Usage:

• new Validator(readerForXML);
  to validate some XML that contains or references an accessible DTD or schema
• new Validator(readerForXML, systemIdForValidation);
  to validate some XML that references a DTD but using a local systemId to perform the validation
• new Validator(readerForXML, systemIdForValidation, doctypeName);
  to validate some XML against a completely different DTD

Examples and more at xmlunit.sourceforge.net

Constructor Summary

Constructors

Modifier	Constructor	Description
	Validator(Reader readerForValidation)	Basic constructor.
	Validator(Reader readerForValidation, String systemID)	Extended constructor.
	Validator(Reader readerForValidation, String systemID, String doctype)	Full constructor.
	Validator(String stringForValidation)	Basic constructor.
	Validator(String stringForValidation, String systemID)	Extended constructor.
	Validator(Document document, String systemID, String doctype)	DOM-style constructor: allows Document validation post-manipulation of the DOM tree's contents.
	Validator(InputSource sourceForValidation)	Basic constructor.
protected	Validator(InputSource inputSource, boolean usingDoctypeReader)	Deprecated. Use the protected three arg constructor instead.
	Validator(InputSource sourceForValidation, String systemID)	Extended constructor.
protected	Validator(InputSource inputSource, String systemId, boolean usingDoctypeReader)	Baseline constructor: called by all others
	Validator(InputSource sourceForValidation, String systemID, String doctype)	Full constructor.

Method Summary

Modifier and Type	Method	Description
void	assertIsValid()	Assert that a document is valid.
void	error(SAXParseException exception)	ErrorHandler interface method.
void	fatalError(SAXParseException exception)	ErrorHandler interface method.
boolean	isValid()	Perform the validation of the source against DTD / Schema.
InputSource	resolveEntity(String publicId, String systemId)	Entity Resolver method: allows us to override an existing systemID referenced in the markup DOCTYPE instruction.
void	setJAXP12SchemaSource(Object schemaSource)	As per JAXP 1.2 changes, which introduced a standard way for parsers to support schema validation.
String	toString()
void	useXMLSchema(boolean use)	Turn on XML Schema validation.
void	warning(SAXParseException exception)	ErrorHandler interface method.

Methods inherited from class org.xml.sax.helpers.DefaultHandler

characters, endDocument, endElement, endPrefixMapping, ignorableWhitespace, notationDecl, processingInstruction, setDocumentLocator, skippedEntity, startDocument, startElement, startPrefixMapping, unparsedEntityDecl

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.xml.sax.ContentHandler

declaration

Constructor Details

Validator

protected Validator(InputSource inputSource,
 boolean usingDoctypeReader)
             throws SAXException,
ConfigurationException

Deprecated.

Use the protected three arg constructor instead.

Kept for backwards compatibility.

Throws:

SAXException

ConfigurationException

Validator

protected Validator(InputSource inputSource,
 String systemId,
 boolean usingDoctypeReader)
             throws SAXException,
ConfigurationException

Baseline constructor: called by all others

Parameters:

inputSource -

systemId -

usingDoctypeReader -

Throws:

SAXException

ConfigurationException - if validation could not be turned on

Validator

public Validator(Document document,
 String systemID,
 String doctype)
          throws SAXException,
ConfigurationException

DOM-style constructor: allows Document validation post-manipulation of the DOM tree's contents. This takes a fairly tortuous route to validation as DOM level 2 does not allow creation of Doctype nodes. The supplied systemId and doctype name will replace any Doctype settings in the Document.

Parameters:

document -

systemID -

doctype -

Throws:

SAXException - if unable to obtain new Sax parser via JAXP factory

ConfigurationException - if validation could not be turned on

Validator

public Validator(Reader readerForValidation)
          throws SAXException,
ConfigurationException

Basic constructor. Validates the contents of the Reader using the DTD or schema referenced by those contents.

Parameters:

readerForValidation -

Throws:

SAXException - if unable to obtain new Sax parser via JAXP factory

ConfigurationException - if validation could not be turned on

Validator

public Validator(String stringForValidation)
          throws SAXException,
ConfigurationException

Basic constructor. Validates the contents of the String using the DTD or schema referenced by those contents.

Parameters:

stringForValidation -

Throws:

SAXException - if unable to obtain new Sax parser via JAXP factory

ConfigurationException - if validation could not be turned on

Validator

public Validator(InputSource sourceForValidation)
          throws SAXException,
ConfigurationException

Basic constructor. Validates the contents of the InputSource using the DTD or schema referenced by those contents.

Parameters:

readerForValidation -

Throws:

SAXException - if unable to obtain new Sax parser via JAXP factory

ConfigurationException - if validation could not be turned on

Validator

public Validator(Reader readerForValidation,
 String systemID)
          throws SAXException,
ConfigurationException

Extended constructor. Validates the contents of the Reader using the DTD specified with the systemID. There must be DOCTYPE instruction in the markup that references the DTD or else the markup will be considered invalid: if there is no DOCTYPE in the markup use the 3-argument constructor

Parameters:

readerForValidation -

systemID -

Throws:

SAXException - if unable to obtain new Sax parser via JAXP factory

ConfigurationException - if validation could not be turned on

Validator

public Validator(String stringForValidation,
 String systemID)
          throws SAXException,
ConfigurationException

Extended constructor. Validates the contents of the String using the DTD specified with the systemID. There must be DOCTYPE instruction in the markup that references the DTD or else the markup will be considered invalid: if there is no DOCTYPE in the markup use the 3-argument constructor

Parameters:

stringForValidation -

systemID -

Throws:

SAXException - if unable to obtain new Sax parser via JAXP factory

ConfigurationException - if validation could not be turned on

Validator

public Validator(InputSource sourceForValidation,
 String systemID)
          throws SAXException,
ConfigurationException

Extended constructor. Validates the contents of the InputSource using the DTD specified with the systemID. There must be DOCTYPE instruction in the markup that references the DTD or else the markup will be considered invalid: if there is no DOCTYPE in the markup use the 3-argument constructor

Parameters:

sourceForValidation -

systemID -

Throws:

SAXException - if unable to obtain new Sax parser via JAXP factory

ConfigurationException - if validation could not be turned on

Validator

public Validator(InputSource sourceForValidation,
 String systemID,
 String doctype)
          throws SAXException,
ConfigurationException

Full constructor. Validates the contents of the InputSource using the DTD specified with the systemID and named with the doctype name.

Parameters:

sourceForValidation -

systemID -

doctype -

Throws:

SAXException

ConfigurationException - if validation could not be turned on

Validator

public Validator(Reader readerForValidation,
 String systemID,
 String doctype)
          throws SAXException,
ConfigurationException

Full constructor. Validates the contents of the Reader using the DTD specified with the systemID and named with the doctype name.

Parameters:

readerForValidation -

systemID -

doctype -

Throws:

SAXException

ConfigurationException - if validation could not be turned on

Method Details

useXMLSchema

public void useXMLSchema(boolean use)
                  throws SAXException

Turn on XML Schema validation.

This feature should work with any XML parser that is JAXP 1.2 compliant and supports XML Schema validation.

For a fully JAXP 1.2 compliant parser the property http://java.sun.com/xml/jaxp/properties/schemaLanguage is set, if this fails the method falls back to the features http://apache.org/xml/features/validation/schema & http://apache.org/xml/features/validation/dynamic which should cover early versions of Xerces 2 as well.

Parameters:

use - indicate that XML Schema should be used to validate documents.

Throws:

SAXException

See Also:

• setJAXP12SchemaSource(Object)

isValid

public boolean isValid()

Perform the validation of the source against DTD / Schema.

Returns:

true if the input supplied to the constructor passes validation, false otherwise

assertIsValid

public void assertIsValid()

Assert that a document is valid.

toString

public String toString()

Overrides:

toString in class Object

Returns:

class name appended with validation messages

warning

public void warning(SAXParseException exception)
             throws SAXException

ErrorHandler interface method.

Specified by:

warning in interface ErrorHandler

Overrides:

warning in class DefaultHandler

Parameters:

exception -

Throws:

SAXException

error

public void error(SAXParseException exception)
           throws SAXException

ErrorHandler interface method.

Specified by:

error in interface ErrorHandler

Overrides:

error in class DefaultHandler

Parameters:

exception -

Throws:

SAXException

fatalError

public void fatalError(SAXParseException exception)
                throws SAXException

ErrorHandler interface method.

Specified by:

fatalError in interface ErrorHandler

Overrides:

fatalError in class DefaultHandler

Parameters:

exception -

Throws:

SAXException

resolveEntity

public InputSource resolveEntity(String publicId,
 String systemId)

Entity Resolver method: allows us to override an existing systemID referenced in the markup DOCTYPE instruction.

Specified by:

resolveEntity in interface EntityResolver

Overrides:

resolveEntity in class DefaultHandler

Parameters:

publicId -

systemId -

Returns:

the sax InputSource that points to the overridden systemID

setJAXP12SchemaSource

public void setJAXP12SchemaSource(Object schemaSource)
                           throws SAXException

As per JAXP 1.2 changes, which introduced a standard way for parsers to support schema validation. Since only W3C Schema support was included in JAXP 1.2, this is the only mechanism currently supported by this method.

Parameters:

schemaSource - This can be one of the following:

• String that points to the URI of the schema
• InputStream with the contents of the schema
• SAX InputSource
• File
• an array of Objects with the contents being one of the types defined above. An array of Objects can be used only when the schema language has the ability to assemble a schema at runtime. When an array of Objects is passed it is illegal to have two schemas that share the same namespace.

Throws:

SAXException - if this method of validating isn't supported.