Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/rdflib/plugins/serializers/n3.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
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1 """
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2 Notation 3 (N3) RDF graph serializer for RDFLib.
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3 """
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4 from rdflib.graph import Graph
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5 from rdflib.namespace import Namespace, OWL
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6 from rdflib.plugins.serializers.turtle import (
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7 TurtleSerializer, SUBJECT, OBJECT)
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8
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9 __all__ = ['N3Serializer']
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10
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11 SWAP_LOG = Namespace("http://www.w3.org/2000/10/swap/log#")
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12
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13
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14 class N3Serializer(TurtleSerializer):
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15
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16 short_name = "n3"
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17
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18 def __init__(self, store, parent=None):
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19 super(N3Serializer, self).__init__(store)
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20 self.keywords.update({
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21 OWL.sameAs: '=',
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22 SWAP_LOG.implies: '=>'
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23 })
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24 self.parent = parent
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25
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26 def reset(self):
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27 super(N3Serializer, self).reset()
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28 self._stores = {}
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29
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30 def subjectDone(self, subject):
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31 super(N3Serializer, self).subjectDone(subject)
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32 if self.parent:
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33 self.parent.subjectDone(subject)
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34
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35 def isDone(self, subject):
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36 return (super(N3Serializer, self).isDone(subject)
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37 and (not self.parent or self.parent.isDone(subject)))
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38
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39 def startDocument(self):
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40 super(N3Serializer, self).startDocument()
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41 # if not isinstance(self.store, N3Store):
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42 # return
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43 #
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44 # all_list = [self.label(var) for var in
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45 # self.store.get_universals(recurse=False)]
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46 # all_list.sort()
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47 # some_list = [self.label(var) for var in
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48 # self.store.get_existentials(recurse=False)]
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49 # some_list.sort()
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50 #
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51 # for var in all_list:
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52 # self.write('\n'+self.indent()+'@forAll %s. '%var)
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53 # for var in some_list:
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54 # self.write('\n'+self.indent()+'@forSome %s. '%var)
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55 #
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56 # if (len(all_list) + len(some_list)) > 0:
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57 # self.write('\n')
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58
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59 def endDocument(self):
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60 if not self.parent:
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61 super(N3Serializer, self).endDocument()
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62
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63 def indent(self, modifier=0):
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64 indent = super(N3Serializer, self).indent(modifier)
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65 if self.parent is not None:
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66 indent += self.parent.indent() # modifier)
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67 return indent
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68
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69 def preprocessTriple(self, triple):
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70 super(N3Serializer, self).preprocessTriple(triple)
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71 if isinstance(triple[0], Graph):
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72 for t in triple[0]:
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73 self.preprocessTriple(t)
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74 if isinstance(triple[2], Graph):
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75 for t in triple[2]:
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76 self.preprocessTriple(t)
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77
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78 def getQName(self, uri, gen_prefix=True):
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79 qname = None
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80 if self.parent is not None:
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81 qname = self.parent.getQName(uri, gen_prefix)
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82 if qname is None:
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83 qname = super(N3Serializer, self).getQName(uri, gen_prefix)
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84 return qname
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85
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86 def statement(self, subject):
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87 self.subjectDone(subject)
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88 properties = self.buildPredicateHash(subject)
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89 if len(properties) == 0:
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90 return False
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91 return (self.s_clause(subject)
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92 or super(N3Serializer, self).statement(subject))
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93
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94 def path(self, node, position, newline=False):
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95 if not self.p_clause(node, position):
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96 super(N3Serializer, self).path(node, position, newline)
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97
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98 def s_clause(self, subject):
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99 if isinstance(subject, Graph):
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100 self.write('\n' + self.indent())
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101 self.p_clause(subject, SUBJECT)
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102 self.predicateList(subject)
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103 self.write(' .')
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104 return True
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105 else:
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106 return False
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107
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108 def p_clause(self, node, position):
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109 if isinstance(node, Graph):
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110 self.subjectDone(node)
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111 if position is OBJECT:
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112 self.write(' ')
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113 self.write('{')
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114 self.depth += 1
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115 serializer = N3Serializer(node, parent=self)
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116 serializer.serialize(self.stream)
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117 self.depth -= 1
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118 self.write(self.indent() + '}')
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119 return True
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120 else:
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121 return False