Package com.saxonica.ee.schema

Class PreprocessFacet

java.lang.Object
com.saxonica.ee.schema.Facet
com.saxonica.ee.schema.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 Details

    • PreprocessFacet

      public PreprocessFacet()

    • PreprocessFacet

      public PreprocessFacet(Assertion action, Assertion reverseAction)

  • Method Details

    • 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 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 UnicodeString 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

    • checkFacetRestriction

      public void checkFacetRestriction(UserSimpleType type, SimpleType base, SchemaCompiler compiler) throws SchemaException, ValidationException
      Check that this facet is legal when used on a type derived by restriction
      Overrides:
      checkFacetRestriction in class Facet
      Parameters:
      type - the type on which the facet is defined
      base - the type from which the restricted type is derived
      compiler - the schema compiler
      Throws:
      SchemaException - if the facet is not legal
      ValidationException - if a value is found that does not conform to the facet

    • preprocess

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