Remove SPARQLWrapper dependency

rdflib/plugin.py

@@ -322,12 +322,32 @@ def plugins(name=None, kind=None):
 register(
     'xml', ResultParser,
     'rdflib.plugins.sparql.results.xmlresults', 'XMLResultParser')
+register(
+    'application/sparql-results+xml', ResultParser,
+    'rdflib.plugins.sparql.results.xmlresults', 'XMLResultParser')
+
+register(
+    'application/rdf+xml', ResultParser,
+    'rdflib.plugins.sparql.results.graph', 'GraphResultParser')
+
+
 register(
     'json', ResultParser,
     'rdflib.plugins.sparql.results.jsonresults', 'JSONResultParser')
+register(
+    'application/sparql-results+json', ResultParser,
+    'rdflib.plugins.sparql.results.jsonresults', 'JSONResultParser')
+
 register(
     'csv', ResultParser,
     'rdflib.plugins.sparql.results.csvresults', 'CSVResultParser')
+register(
+    'text/csv', ResultParser,
+    'rdflib.plugins.sparql.results.csvresults', 'CSVResultParser')
+
 register(
     'tsv', ResultParser,
     'rdflib.plugins.sparql.results.tsvresults', 'TSVResultParser')
+register(
+    'text/tab-separated-values', ResultParser,
+    'rdflib.plugins.sparql.results.tsvresults', 'TSVResultParser')

rdflib/plugins/sparql/results/csvresults.py

@@ -21,7 +21,7 @@ class CSVResultParser(ResultParser):
     def __init__(self):
         self.delim = ","
 
-    def parse(self, source):
+    def parse(self, source, content_type=None):
 
         r = Result('SELECT')
 

rdflib/plugins/sparql/results/graph.py

@@ -0,0 +1,18 @@
+from rdflib import Graph
+
+from rdflib.query import (
+    Result,
+    ResultParser,
+    ResultSerializer,
+    ResultException
+)
+
+class GraphResultParser(ResultParser):
+
+    def parse(self, source, content_type):
+
+        res = Result('CONSTRUCT') # hmm - or describe?type_)
+        res.graph = Graph()
+        res.graph.parse(source, format=content_type)
+
+        return res

rdflib/plugins/sparql/results/jsonresults.py

@@ -21,7 +21,7 @@
 
 class JSONResultParser(ResultParser):
 
-    def parse(self, source):
+    def parse(self, source, content_type=None):
         inp = source.read()
         if isinstance(inp, binary_type):
             inp = inp.decode('utf-8')

rdflib/plugins/sparql/results/tsvresults.py

@@ -47,7 +47,7 @@
 
 
 class TSVResultParser(ResultParser):
-    def parse(self, source):
+    def parse(self, source, content_type=None):
 
         if isinstance(source.read(0), binary_type):
             # if reading from source returns bytes do utf-8 decoding

rdflib/plugins/sparql/results/xmlresults.py

@@ -37,25 +37,18 @@
 
 class XMLResultParser(ResultParser):
 
-    def parse(self, source):
+    def parse(self, source, content_type=None):
         return XMLResult(source)
 
 
 class XMLResult(Result):
-    def __init__(self, source):
+    def __init__(self, source, content_type=None):
 
-        xmlstring = source.read()
-
-        if isinstance(xmlstring, text_type):
-            xmlstring = xmlstring.encode('utf-8')
         try:
             parser = etree.XMLParser(huge_tree=True)
-            tree = etree.parse(BytesIO(xmlstring), parser)
+            tree = etree.parse(source, parser)
         except TypeError:
-            tree = etree.fromstring(xmlstring)
-        except Exception as e:
-            log.exception("Error parsing XML results: %s"%xmlstring)
-            raise e
+            tree = etree.parse(source)
 
         boolean = tree.find(RESULTS_NS_ET + 'boolean')
         results = tree.find(RESULTS_NS_ET + 'results')
@@ -65,18 +58,11 @@ def __init__(self, source):
         elif results is not None:
             type_ = 'SELECT'
         else:
-            g = Graph()
-            try:
-                g.parse(data=xmlstring)
-                if len(g) == 0:
-                    raise
-                type_ = 'CONSTRUCT'
-
-            except:
-                raise ResultException(
-                    "No RDF Graph, result-bindings or boolean answer found!")
+            raise ResultException(
+                "No RDF result-bindings or boolean answer found!")
 
         Result.__init__(self, type_)
+
         if type_ == 'SELECT':
             self.bindings = []
             for result in results:
@@ -90,10 +76,11 @@ def __init__(self, source):
                          './%shead/%svariable' % (
                              RESULTS_NS_ET, RESULTS_NS_ET))]
 
-        elif type_ == 'ASK':
+        else:
             self.askAnswer = boolean.text.lower().strip() == "true"
-        elif type_ == 'CONSTRUCT':
-            self.graph = g
+
+
+
 
 
 def parseTerm(element):