$Id: toXML.html,v 1.22 2004/11/10 00:50:21 syosi Exp $
 
 
This module implements basic sources and sinks for RDF data.
It defines a stream interface for such data.
It has a command line interface, can work as a web query engine,
and has built in test(), all of which demosntrate how it is used.
 
To make a new RDF processor, subclass RDFSink.
 
See also:
 
Notation 3
http://www.w3.org/DesignIssues/Notation3
 
Closed World Machine - and RDF Processor
http;//www.w3.org/2000/10/swap/cwm
 
To DO: See also "@@" in comments
 
Internationlization:
- Decode incoming N3 file as unicode
- Encode outgoing file
- unicode \u  (??) escapes in parse
- unicode \u  (??) escapes in string output
 
Note currently unicode strings work in this code
but fail when they are output into the python debugger
interactive window.
 
______________________________________________
 
Module originally by Dan Connolly.
TimBL added RDF stream model.

Modules
		RDFSink codecs re string sys urllib urlparse

Classes
		RDFSink.RDFStructuredOutput(RDFSink.RDFSink) ToRDF XMLWriter   class ToRDF(RDFSink.RDFStructuredOutput)     keeps track of most recent subject, reuses it     Method resolution order: ToRDF RDFSink.RDFStructuredOutput RDFSink.RDFSink Methods defined here: __init__(self, outFp, thisURI=None, base=None, flags='') #@ Not actually complete, and can encode anyway dummyClone(self) retun a version of myself which will only count occurrences endAnonymous(self, subject, verb) endAnonymousNode(self, subj=None) endBagObject(self, pred, subj) endBagSubject(self, subj) endDoc(self, rootFormulaPair=None) flushStart(self) makeComment(self, str) makeStatement(self, tuple, why=None, aIsPossible=0) referenceTo(self, uri) Conditional relative URI startAnonymous(self, tuple, isList=0) startAnonymousNode(self, subj, li=0) startBagObject(self, tuple) startBagSubject(self, context) startDoc(self) Data and other attributes defined here: flagDocumentation = '\nFlags to control RDF/XML output (after --rdf=) ...e URIs.\nz - Allow relative URIs for namespaces\n\n' Methods inherited from RDFSink.RDFStructuredOutput: endBagNamed(self, subj) startBagNamed(self, context, subj) Methods inherited from RDFSink.RDFSink: bind(self, prefix, uri) Pass on a binding hint for later use in output   This really is just a hint. The parser calls bind to pass on the prefix which it came across, as this is a useful hint for a human readable prefix for output of the same namespace. Otherwise, output processors will have to invent or avoid useing namespaces, which will look ugly checkNewId(self, uri) The store can override this to raise an exception if the id is not in fact new. This is useful because it is usfeul to generate IDs with useful diagnostic ways but this lays them open to possibly clashing in pathalogical cases. countNamespace(self, namesp) On output, count how many times each namespace is used genId(self) namespaceCounts(self) newBlankNode(self, context, uri=None, why=None) newExistential(self, context, uri=None, why=None) newFormula(self, uri=None) newLiteral(self, str, dt=None, lang=None) newSymbol(self, uri) newUniversal(self, context, uri=None, why=None) reopen(self) Un-End a document   If you have added stuff to a document, thought you were done, and then want to add more, call this to get back into the sate that makeSatement is again acceptable. Remember to end the document again when done. setDefaultNamespace(self, uri) Pass on a binding hint for later use in output   This really is just a hint. The parser calls this to pass on the default namespace which it came across, as this is a useful hint for a human readable prefix for output of the same namespace. Otherwise, output processors will have to invent or avoid useing namespaces, which will look ugly. setGenPrefix(self, genPrefix)   class XMLWriter     taken from Id: tsv2xml.py,v 1.1 2000/10/02 19:41:02 connolly Exp connolly   Takes as argument a writer which does the (eg utf-8) encoding     Methods defined here: __init__(self, encodingWriter, counter, squeaky=0, version='1.0') closeTag(self) data(self, str) emptyElement(self, n, attrs=[], prefixes={}) endDocument(self) endElement(self) figurePrefix(self, uriref, rawAttrs, prefixes) flushClose(self) indent(self, extra=0) makeComment(self, str) makePI(self, str) newline(self, howmany=1) startElement(self, n, attrs=[], prefixes={}) Data and other attributes defined here: attrEsc = <_sre.SRE_Pattern object> dataEsc = <_sre.SRE_Pattern object>

Functions
		bNodePredicate() dummyWrite(x) xmldata(write, str, markupChars)

Data
		ADDED_HASH = '#' ALL4 = (0, 1, 2, 3) ANONYMOUS = 3 CONTEXT = 0 DAML_LISTS = 1 DAML_NS = 'http://www.daml.org/2001/03/daml+oil#' DAML_sameAs = (0, 'http://www.daml.org/2001/03/daml+oil#sameAs') DAML_sameAs_URI = 'http://www.daml.org/2001/03/daml+oil#sameAs' DPO_NS = 'http://www.daml.org/2001/03/daml+oil#' FORMULA = 1 LITERAL = 2 List_NS = 'http://www.daml.org/2001/03/daml+oil#' Logic_NS = 'http://www.w3.org/2000/10/swap/log#' N3_Empty = (0, 'http://www.daml.org/2001/03/daml+oil#Empty') N3_List = (0, 'http://www.daml.org/2001/03/daml+oil#List') N3_first = (0, 'http://www.daml.org/2001/03/daml+oil#first') N3_forAll_URI = 'http://www.w3.org/2000/10/swap/log#forAll' N3_forSome_URI = 'http://www.w3.org/2000/10/swap/log#forSome' N3_nil = (0, 'http://www.daml.org/2001/03/daml+oil#nil') N3_rest = (0, 'http://www.daml.org/2001/03/daml+oil#rest') NCNameChar = 0 NCNameStartChar = 1 NODE_MERGE_URI = 'http://www.w3.org/2000/10/swap/log#is' OBJ = 3 PARTS = (1, 2, 3) PRED = 1 RDF_NS_URI = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#' RDF_spec = 'http://www.w3.org/TR/REC-rdf-syntax/' RDF_type = (0, 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type') RDF_type_URI = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type' SUBJ = 2 SYMBOL = 0 XML_NS_URI = 'http://www.w3.org/XML/1998/namespace' option_noregen = 0 parsesTo_URI = 'http://www.w3.org/2000/10/swap/log#parsesTo'