SEM_APIS.GETV$TIMETZVAL

Format

SEM_APIS.GETV$TIMETZVAL(
     value_type     IN VARCHAR2, 
     vname_prefix   IN VARCHAR2, 
     vname_suffix   IN VARCHAR2, 
     literal_type   IN VARCHAR2, 
     language_type  IN VARCHAR2, 
     ) RETURN TIMESTAMP WITH TIME ZONE;

Description

Returns a TIMESTAMP WITH TIME ZONE value for xsd:time typed literals, and returns a null value for all other RDF terms. Greenwich Mean Time is used as the default time zone for xsd:time values without time zones. 2009-06-26 is used as the default date in all the generated TIMESTAMP WITH TIME ZONE values.

Parameters

value_type: Type of the RDF term.
vname_prefix: Prefix value of the RDF term.
vname_suffix: Suffix value of the RDF term.
literal_type: Literal type of the RDF term.
language_type: Language type of the RDF term.

Usage Notes

For better performance, consider creating a function-based index on this function. For more information, see Function-Based Indexes for FILTER Constructs Involving Typed Literals.

Because xsd:time values include only a time but not a date, the returned TIMESTAMP WITH TIME ZONE values (which include a date component) have 2009-06-26 added as the date. This is done so that the returned values can be indexed internally, and so that the date is the same for all of them.

Examples

The following example returns TIMESTAMP WITH TIME ZONE values (using the default 2009-06-26 for the date) for all xsd:time literals in the RDF_VALUE$ table. (

SELECT SEM_APIS.GETV$DATETIMETZVAL(value_type, vname_prefix, vname_suffix, 
  literal_type, language_type) 
  FROM RDF_VALUE$;