Class PreprocessFacet


  • public class PreprocessFacet
    extends Facet
    Represents the preprocess facet on a schema-defined simple type. This is a pre-lexical facet defined as a Saxon extension to XML Schema 1.1: it allows an XPath expression to be used to convert the value as written (after whitespace normalization) to a different form, which is then validated using the constraining facets. For example the preprocessing action translate($value, ',', '.') allows the input value 3,14159 to be converted to 3.14159 which then validates as a double.
    • Constructor Detail

      • PreprocessFacet

        public PreprocessFacet()
    • Method Detail

      • isConstraining

        public boolean isConstraining()
        Ask whether this is a constraining facet (as distinct from a pre-lexical facet)
        Overrides:
        isConstraining in class Facet
        Returns:
        true if this is a constraining facet
      • getName

        public java.lang.String getName()
        Description copied from class: Facet
        Returns the name of this Facet
        Specified by:
        getName in class Facet
        Returns:
        the name of this Facet
      • getValue

        public java.lang.String getValue()
        Returns the lexical representation of this facet
        Specified by:
        getValue in class Facet
        Returns:
        the value of this facet
      • getAction

        public Assertion getAction()
        Get the XPath expression representing the action performed by this facet, represented as an Assertion object
      • getReverseAction

        public Assertion getReverseAction()
        Get the XPath expression representing the reverse action performed by this facet, represented as an Assertion object
      • setAction

        public void setAction​(Assertion action)
        Set the XPath expression representing the action performed by this facet, represented as an Assertion object
      • setReverseAction

        public void setReverseAction​(Assertion action)
        Set the XPath expression representing the reverse action performed by this facet, represented as an Assertion object
      • preprocess

        public java.lang.CharSequence preprocess​(java.lang.CharSequence input)
                                          throws ValidationException
        Apply the preprocessing defined by this facet
        Parameters:
        input - the lexical value, after whitespace normalization, to be converted
        Returns:
        the value after preprocessing using the XPath expression defined in this facet
        Throws:
        ValidationException
      • postprocess

        public java.lang.CharSequence postprocess​(java.lang.CharSequence input)
                                           throws ValidationException
        Apply the postprocessing defined by this facet
        Parameters:
        input - the lexical value to be converted
        Returns:
        the value after postprocessing using the reverse XPath expression defined in this facet
        Throws:
        ValidationException
      • testAtomicValue

        public boolean testAtomicValue​(AtomicValue value)
        Test whether an atomic value conforms to this facet
        Specified by:
        testAtomicValue in class Facet
        Parameters:
        value - the value to be tested
        Returns:
        true if the value conforms; false if it doesn't conform, or if the test fails
      • serializeFacet

        public void serializeFacet​(SchemaModelSerializer serializer)
                            throws XPathException
        Description copied from class: Facet
        Serialize this facet when externalizing the schema component model
        Overrides:
        serializeFacet in class Facet
        Parameters:
        serializer - receives the content for serialization
        Throws:
        XPathException - if an error occurs writing the value to the output
      • getFacetAsFunctionItem

        public Function getFacetAsFunctionItem()
        Description copied from class: Facet
        Get a function item that represents this Facet schema component.
        Specified by:
        getFacetAsFunctionItem in class Facet