#!/bin/env python

print "==== Example 4 - Find all the books with a given title (a string)"

import joseki
import sys 

from joseki import JosekiRequest
from rdflib.URIRef import URIRef
from rdflib.Namespace import Namespace

# A better name for the "wildcard" in a triple match
ANY = None

# Declare constants: better to use namespaces
DC = Namespace("http://purl.org/dc/elements/1.1/")
dcTitle = DC['title']

# The target model URL
# This is the Joseki online demo
modelURL = "http://jena.hpl.hp.com:2020/books"
if len(sys.argv) > 1:
    modelURL = sys.argv[1]
    print "Data source =", modelURL

book1 = URIRef("http://example.org/book/book1")
book2 = URIRef("http://example.org/book/book2")
book3 = URIRef("http://example.org/book/book3")
book4 = URIRef("http://example.org/book/book4")
book5 = URIRef("http://example.org/book/book5")

# ----------------------------------------

store = joseki.triples(modelURL, None, dcTitle, "Harry Potter and the Goblet of Fire")

for s, p, o in store.triples((ANY,ANY,ANY)):
    if str(p) == str(dcTitle):
        print s, "->", o
    else:
        print s, "->" ,p, "->", o

bookDetails = joseki.fetch(modelURL, book2)
bookDetails.prefix_mapping("dc", "http://purl.org/dc/elements/1.1/")
bookDetails.prefix_mapping("vcard", "http://www.w3.org/2001/vcard-rdf/3.0#")

if bookDetails.__dict__.has_key('serialize'):
    # RDFlib v2
    print bookDetails.serialize()
else:
    # RDFlib v1
    bookDetails.output(sys.stdout)