Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/rdflib/plugins/sparql/results/rdfresults.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1 from rdflib import Graph, Namespace, RDF, Variable
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2
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3 from rdflib.query import Result, ResultParser
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4
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5 RS = Namespace('http://www.w3.org/2001/sw/DataAccess/tests/result-set#')
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8 class RDFResultParser(ResultParser):
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9 def parse(self, source, **kwargs):
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10 return RDFResult(source, **kwargs)
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12
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13 class RDFResult(Result):
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14
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15 def __init__(self, source, **kwargs):
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16
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17 if not isinstance(source, Graph):
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18 graph = Graph()
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19 graph.load(source, **kwargs)
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20 else:
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21 graph = source
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22
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23 rs = graph.value(predicate=RDF.type, object=RS.ResultSet)
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24 # there better be only one :)
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25
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26 if rs is None:
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27 type_ = 'CONSTRUCT'
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28
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29 # use a new graph
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30 g = Graph()
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31 g += graph
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32
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33 else:
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35 askAnswer = graph.value(rs, RS.boolean)
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36
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37 if askAnswer is not None:
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38 type_ = 'ASK'
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39 else:
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40 type_ = 'SELECT'
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41
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42 Result.__init__(self, type_)
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43
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44 if type_ == 'SELECT':
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45 self.vars = [Variable(v) for v in graph.objects(rs,
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46 RS.resultVariable)]
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47
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48 self.bindings = []
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49
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50 for s in graph.objects(rs, RS.solution):
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51 sol = {}
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52 for b in graph.objects(s, RS.binding):
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53 sol[Variable(graph.value(
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54 b, RS.variable))] = graph.value(b, RS.value)
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55 self.bindings.append(sol)
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56 elif type_ == 'ASK':
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57 self.askAnswer = askAnswer.value
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58 if askAnswer.value == None:
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59 raise Exception('Malformed boolean in ask answer!')
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60 elif type_ == 'CONSTRUCT':
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61 self.graph = g