This class is the standard ModuleURIResolver used to implement the "import module" declaration
in a Query Prolog. It is used when no user-defined ModuleURIResolver has been specified, or when
the user-defined ModuleURIResolver decides to delegate to the standard ModuleURIResolver.
Create a StandardModuleURIResolver. Although the class is generally used as a singleton,
a public constructor is provided so that the class can be named in configuration files and
instantiated in the same way as user-written module URI resolvers.
moduleURI - The module namespace URI of the module to be imported; or null when
loading a non-library module.
baseURI - The base URI of the module containing the "import module" declaration;
null if no base URI is known
locations - The set of URIs specified in the "at" clause of "import module",
which serve as location hints for the module
an array of StreamSource objects each identifying the contents of a module to be
imported. Each StreamSource must contain a
non-null absolute System ID which will be used as the base URI of the imported module,
and either an InputSource or a Reader representing the text of the module.
Get a StreamSource object representing the source of a query, given its URI.
This method attempts to discover the encoding by reading any HTTP headers.
If the encoding can be determined, it returns a StreamSource containing a Reader that
performs the required decoding. Otherwise, it returns a StreamSource containing an
InputSource, leaving the caller to sort out encoding problems.
absoluteURI - the absolute URI of the source query
a StreamSource containing a Reader or InputSource, as well as a systemID representing
the base URI of the query.
XPathException - if the URIs are invalid or cannot be resolved or dereferenced, or
if any I/O error occurs