Package com.stardog.stark.io.datatypes

Class XMLSchemaDatatypeHandler

  • All Implemented Interfaces:
    DatatypeHandler
    public final class XMLSchemaDatatypeHandler
extends java.lang.Object
implements DatatypeHandler
    An implementation of a datatype handler that can process XSD datatypes.

    Implemented using XMLDatatypes.

    Since:
    1.0
    Version:
    1.0
    Author:
    Peter Ansell, Michael Grove

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean isRecognizedDatatype​(IRI datatypeUri)
      Checks if the given datatype IRI is recognized by this `DatatypeHandler`.
      java.lang.String key()
      A unique key for this datatype handler to identify it in the
      Literal normalizeDatatype​(java.lang.String theValue, Datatype theDatatype)
      Normalize both the datatype and the literal value if appropriate, and generate a literal with the provided value and datatype.
      boolean verifyDatatype​(java.lang.String theValue, Datatype theDatatype)
      Verifies that the datatype is valid, including a check on the structure of the literal value.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • XMLSchemaDatatypeHandler

        public XMLSchemaDatatypeHandler()
        Default constructor.

    • Method Detail

      • verifyDatatype

        public boolean verifyDatatype​(@Nonnull
                              java.lang.String theValue,
                              @Nonnull
                              Datatype theDatatype)
        Verifies that the datatype is valid, including a check on the structure of the literal value.

        This method must only be called after verifying that DatatypeHandler.isRecognizedDatatype(IRI) returns true for the given datatype URI.

        Specified by:
        verifyDatatype in interface DatatypeHandler
        Parameters:
        theValue - Literal value matching the given datatype URI.
        theDatatype - A datatype that matched with DatatypeHandler.isRecognizedDatatype(IRI)
        Returns:
        True if the datatype URI is recognized by this datatype handler, and it is verified to be syntactically valid. An implementation may throw InvalidLiteral exception if the datatype is not recognized

      • normalizeDatatype

        @Nonnull
public Literal normalizeDatatype​(@Nonnull
                                 java.lang.String theValue,
                                 @Nonnull
                                 Datatype theDatatype)
                          throws InvalidLiteral
        Normalize both the datatype and the literal value if appropriate, and generate a literal with the provided value and datatype. This method must only be called after verifying that DatatypeHandler.isRecognizedDatatype(IRI) returns true for the given datatype URI, and DatatypeHandler.verifyDatatype(String, Datatype) also returns true for the given datatype and literal value.
        Specified by:
        normalizeDatatype in interface DatatypeHandler
        Parameters:
        theValue - Required literal value to use in the normalization process and to provide the value for the resulting literal.
        theDatatype - The datatype which is to be normalized. It is available in normalized form from the result using Literal.datatype().
        Returns:
        A Literal containing the normalized literal value and datatype URI. An implementation may throw InvalidLiteral exception if the datatype is not recognized or cannot be normalized for any reason, e.g. its value is not legal for its datatype.
        Throws:
        InvalidLiteral

      • key

        public java.lang.String key()
        A unique key for this datatype handler to identify it in the
        Specified by:
        key in interface DatatypeHandler
        Returns:
        A unique string key.