Package com.saxonica.ee.jaxp

Class ValidatingReader

java.lang.Object
com.saxonica.ee.jaxp.ValidatingReader
All Implemented Interfaces:
XMLReader
public class ValidatingReader extends Object implements XMLReader
This class is a Saxon implementation of XMLReader that performs schema validation using Saxon's schema processor.

This class is supplied for the benefit of applications that expect to perform validation by creating a validating SAX parser; it allows such applications to take advantage of the Saxon validator with no change to the application.

  • Constructor Details

    • ValidatingReader

      public ValidatingReader()
      Create a ValidatingReader. When this option is used, the only way to supply the schema to be used for validation is through the xsi:schemaLocation attribute in the source document.

    • ValidatingReader

      public ValidatingReader(EnterpriseConfiguration config)
      Create a ValidatingReader that uses a specified Saxon Configuration.
      Parameters:
      config - the Saxon Configuration. The Configuration can be pre-initialized with configuration options; it can also contain a pre-loaded cache of schema components to be used for validation

    • ValidatingReader

      public ValidatingReader(EnterpriseConfiguration config, XMLReader parser)
      Create a ValidatingReader based on a supplied Saxon Configuration and a supplied (presumably non-validating) XMLReader to perform the underlying XML parsing.
      Parameters:
      config - the Saxon Configuration. The Configuration can be pre-initialized with configuration options; it can also contain a pre-loaded cache of schema components to be used for validation
      parser - The XML parser to be used

  • Method Details

    • getFeature

      public boolean getFeature(String name) throws SAXNotRecognizedException, SAXNotSupportedException
      Look up the value of a feature flag.
      Specified by:
      getFeature in interface XMLReader
      Parameters:
      name - The names that are recognized are the union of (a) the flags recognized by the underlying SAX XMLReader, and (b) the properties of the Saxon Configuration that have boolean values. A feature name starting with "http://saxon.sf.net" is assumed to be in the second category; these features are listed in FeatureKeys.
      Returns:
      the value of the feature if the name is recognized
      Throws:
      SAXNotRecognizedException - if the feature name is not recognized
      SAXNotSupportedException

    • setFeature

      public void setFeature(String name, boolean value) throws SAXNotRecognizedException, SAXNotSupportedException
      Set the value of a feature flag.
      Specified by:
      setFeature in interface XMLReader
      Parameters:
      name - The names that are recognized are the union of (a) the flags recognized by the underlying SAX XMLReader, and (b) the properties of the Saxon Configuration that have boolean values. A feature name starting with "http://saxon.sf.net" is assumed to be in the second category; these features are listed in FeatureKeys.
      value - true or false
      Throws:
      SAXNotRecognizedException - if the feature name is not recognized, or if it is the name of a Saxon configuration property whose value is not boolean
      SAXNotSupportedException

    • getProperty

      public Object getProperty(String name) throws SAXNotRecognizedException, SAXNotSupportedException
      Look up the value of a property.
      Specified by:
      getProperty in interface XMLReader
      Parameters:
      name - The names that are recognized are the union of (a) the properties recognized by the underlying SAX XMLReader, and (b) the properties of the Saxon Configuration. A feature name starting with "http://saxon.sf.net" is assumed to be in the second category; these features are listed in FeatureKeys.
      Returns:
      the value of the property if the name is recognized
      Throws:
      SAXNotRecognizedException - if the property name is not recognized
      SAXNotSupportedException

    • setProperty

      public void setProperty(String name, Object value) throws SAXNotRecognizedException, SAXNotSupportedException
      Set the value of a property.
      Specified by:
      setProperty in interface XMLReader
      Parameters:
      name - The names that are recognized are the union of (a) the properties recognized by the underlying SAX XMLReader, and (b) the properties of the Saxon Configuration. A feature name starting with "http://saxon.sf.net" is assumed to be in the second category; these features are listed in FeatureKeys.

      Saxon accepts the Apache-defined properties http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation and http://apache.org/xml/properties/schema/external-schemaLocation to define the location of schema documents. These properties may be set repeatedly to load more than one schema document.

      To enable schema validation using XSD 1.1, the property FeatureKeys.XSD_VERSION must be set to the value "1.1".

      value - the value of the property
      Throws:
      SAXNotRecognizedException - if the property name is not recognized, or if the value is inappropriate
      SAXNotSupportedException

    • setEntityResolver

      public void setEntityResolver(EntityResolver resolver)
      Allow an application to register an entity resolver.

      If the application does not register an entity resolver, the XMLReader will perform its own default resolution.

      Applications may register a new or different resolver in the middle of a parse, and the SAX parser must begin using the new resolver immediately.

      Specified by:
      setEntityResolver in interface XMLReader
      Parameters:
      resolver - The entity resolver.
      See Also:

    • getEntityResolver

      public EntityResolver getEntityResolver()
      Return the current entity resolver.
      Specified by:
      getEntityResolver in interface XMLReader
      Returns:
      The current entity resolver, or null if none has been registered.
      See Also:

    • setDTDHandler

      public void setDTDHandler(DTDHandler handler)
      Allow an application to register a DTD event handler.

      If the application does not register a DTD handler, all DTD events reported by the SAX parser will be silently ignored.

      Applications may register a new or different handler in the middle of a parse, and the SAX parser must begin using the new handler immediately.

      Specified by:
      setDTDHandler in interface XMLReader
      Parameters:
      handler - The DTD handler.
      See Also:

    • getDTDHandler

      public DTDHandler getDTDHandler()
      Return the current DTD handler.
      Specified by:
      getDTDHandler in interface XMLReader
      Returns:
      The current DTD handler, or null if none has been registered.
      See Also:

    • setContentHandler

      public void setContentHandler(ContentHandler handler)
      Allow an application to register a content event handler.

      If the application does not register a content handler, all content events reported by the SAX parser will be silently ignored.

      Applications may register a new or different handler in the middle of a parse, and the SAX parser must begin using the new handler immediately.

      Specified by:
      setContentHandler in interface XMLReader
      Parameters:
      handler - The content handler.
      See Also:

    • getContentHandler

      public ContentHandler getContentHandler()
      Return the current content handler.
      Specified by:
      getContentHandler in interface XMLReader
      Returns:
      The current content handler, or null if none has been registered.
      See Also:

    • setErrorHandler

      public void setErrorHandler(ErrorHandler handler)
      Allow an application to register an error event handler.

      If the application does not register an error handler, all error events reported by the SAX parser will be silently ignored; however, normal processing may not continue. It is highly recommended that all SAX applications implement an error handler to avoid unexpected bugs.

      Applications may register a new or different handler in the middle of a parse, and the SAX parser must begin using the new handler immediately.

      Specified by:
      setErrorHandler in interface XMLReader
      Parameters:
      handler - The error handler.
      See Also:

    • getErrorHandler

      public ErrorHandler getErrorHandler()
      Return the current error handler.
      Specified by:
      getErrorHandler in interface XMLReader
      Returns:
      The current error handler, or null if none has been registered.
      See Also:

    • getConfiguration

      public EnterpriseConfiguration getConfiguration()
      Get the Saxon Configuration object used by this Validating Reader (allowing it to be shared by another ValidatingReader)
      Returns:
      the Saxon Configuration object

    • parse

      public void parse(InputSource input) throws IOException, SAXException
      Parse an XML document.

      The application can use this method to component the XML reader to begin parsing an XML document from any valid input source (a character stream, a byte stream, or a URI).

      Applications may not invoke this method while a parse is in progress (they should create a new XMLReader instead for each nested XML document). Once a parse is complete, an application may reuse the same XMLReader object, possibly with a different input source. Configuration of the XMLReader object (such as handler bindings and values established for feature flags and properties) is unchanged by completion of a parse, unless the definition of that aspect of the configuration explicitly specifies other behavior. (For example, feature flags or properties exposing characteristics of the document being parsed.)

      During the parse, the XMLReader will provide information about the XML document through the registered event handlers.

      This method is synchronous: it will not return until parsing has ended. If a client application wants to terminate parsing early, it should throw an exception.

      Specified by:
      parse in interface XMLReader
      Parameters:
      input - The input source for the top-level of the XML document.
      Throws:
      SAXException - Any SAX exception, possibly wrapping another exception.
      IOException - An IO exception from the parser, possibly from a byte stream or character stream supplied by the application.
      See Also:

    • parse

      public void parse(String systemId) throws IOException, SAXException
      Parse an XML document from a system identifier (URI).

      This method is a shortcut for the common case of reading a document from a system identifier. It is the exact equivalent of the following:

       parse(new InputSource(systemId));

      If the system identifier is a URL, it must be fully resolved by the application before it is passed to the parser.

      Specified by:
      parse in interface XMLReader
      Parameters:
      systemId - The system identifier (URI).
      Throws:
      SAXException - Any SAX exception, possibly wrapping another exception.
      IOException - An IO exception from the parser, possibly from a byte stream or character stream supplied by the application.
      See Also: