Mercurial > repos > shellac > sam_consensus_v3

annotate env/lib/python3.9/site-packages/rdflib/paths.py @ 0:4f3585e2f14b draft default tip

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"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author shellac
date Mon, 22 Mar 2021 18:12:50 +0000
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1 from six import PY3
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2
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3
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4 __doc__ = """
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5
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6 This module implements the SPARQL 1.1 Property path operators, as
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7 defined in:
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8
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9 http://www.w3.org/TR/sparql11-query/#propertypaths
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10
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11 In SPARQL the syntax is as follows:
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12
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13 +--------------------+-------------------------------------------------+
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14 |Syntax | Matches |
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15 +====================+=================================================+
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16 |iri | An IRI. A path of length one. |
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17 +--------------------+-------------------------------------------------+
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18 |^elt | Inverse path (object to subject). |
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19 +--------------------+-------------------------------------------------+
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20 |elt1 / elt2 | A sequence path of elt1 followed by elt2. |
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21 +--------------------+-------------------------------------------------+
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22 |elt1 | elt2 | A alternative path of elt1 or elt2 |
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23 | | (all possibilities are tried). |
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24 +--------------------+-------------------------------------------------+
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25 |elt* | A path that connects the subject and object |
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26 | | of the path by zero or more matches of elt. |
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27 +--------------------+-------------------------------------------------+
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28 |elt+ | A path that connects the subject and object |
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29 | | of the path by one or more matches of elt. |
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30 +--------------------+-------------------------------------------------+
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31 |elt? | A path that connects the subject and object |
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32 | | of the path by zero or one matches of elt. |
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33 +--------------------+-------------------------------------------------+
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34 |!iri or | Negated property set. An IRI which is not one of|
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35 |!(iri\ :sub:`1`\ \| | iri\ :sub:`1`...iri\ :sub:`n`. |
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36 |... \|iri\ :sub:`n`)| !iri is short for !(iri). |
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37 +--------------------+-------------------------------------------------+
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38 |!^iri or | Negated property set where the excluded matches |
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39 |!(^iri\ :sub:`1`\ \|| are based on reversed path. That is, not one of |
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40 |...\|^iri\ :sub:`n`)| iri\ :sub:`1`...iri\ :sub:`n` as reverse paths. |
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41 | | !^iri is short for !(^iri). |
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42 +--------------------+-------------------------------------------------+
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43 |!(iri\ :sub:`1`\ \| | A combination of forward and reverse |
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44 |...\|iri\ :sub:`j`\ | properties in a negated property set. |
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45 |\|^iri\ :sub:`j+1`\ | |
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46 |\|... \|^iri\ | |
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47 |:sub:`n`)| | |
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48 +--------------------+-------------------------------------------------+
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49 |(elt) | A group path elt, brackets control precedence. |
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50 +--------------------+-------------------------------------------------+
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51
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52 This module is used internally be the SPARQL engine, but they property paths
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53 can also be used to query RDFLib Graphs directly.
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54
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55 Where possible the SPARQL syntax is mapped to python operators, and property
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56 path objects can be constructed from existing URIRefs.
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57
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58 >>> from rdflib import Graph, Namespace
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59
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60 >>> foaf=Namespace('http://xmlns.com/foaf/0.1/')
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61
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62 >>> ~foaf.knows
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63 Path(~http://xmlns.com/foaf/0.1/knows)
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64
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65 >>> foaf.knows/foaf.name
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66 Path(http://xmlns.com/foaf/0.1/knows / http://xmlns.com/foaf/0.1/name)
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67
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68 >>> foaf.name|foaf.givenName
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69 Path(http://xmlns.com/foaf/0.1/name | http://xmlns.com/foaf/0.1/givenName)
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70
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71 Modifiers (?, *, +) are done using * (the multiplication operator) and
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72 the strings '*', '?', '+', also defined as constants in this file.
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73
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74 >>> foaf.knows*OneOrMore
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75 Path(http://xmlns.com/foaf/0.1/knows+)
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76
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77 The path objects can also be used with the normal graph methods.
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78
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79 First some example data:
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80
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81 >>> g=Graph()
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82
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83 >>> g=g.parse(data='''
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84 ... @prefix : <ex:> .
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85 ...
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86 ... :a :p1 :c ; :p2 :f .
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87 ... :c :p2 :e ; :p3 :g .
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88 ... :g :p3 :h ; :p2 :j .
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89 ... :h :p3 :a ; :p2 :g .
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90 ...
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91 ... :q :px :q .
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92 ...
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93 ... ''', format='n3') # doctest: +ELLIPSIS
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94
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95 >>> e=Namespace('ex:')
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96
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97 Graph contains:
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98 >>> (e.a, e.p1/e.p2, e.e) in g
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99 True
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100
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101 Graph generator functions, triples, subjects, objects, etc. :
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102
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103 >>> list(g.objects(e.c, (e.p3*OneOrMore)/e.p2)) # doctest: +NORMALIZE_WHITESPACE
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104 [rdflib.term.URIRef(u'ex:j'), rdflib.term.URIRef(u'ex:g'),
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105 rdflib.term.URIRef(u'ex:f')]
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106
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107 A more complete set of tests:
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108
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109 >>> list(evalPath(g, (None, e.p1/e.p2, None)))==[(e.a, e.e)]
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110 True
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111 >>> list(evalPath(g, (e.a, e.p1|e.p2, None)))==[(e.a,e.c), (e.a,e.f)]
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112 True
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113 >>> list(evalPath(g, (e.c, ~e.p1, None))) == [ (e.c, e.a) ]
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114 True
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115 >>> list(evalPath(g, (e.a, e.p1*ZeroOrOne, None))) == [(e.a, e.a), (e.a, e.c)]
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116 True
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117 >>> list(evalPath(g, (e.c, e.p3*OneOrMore, None))) == [
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118 ... (e.c, e.g), (e.c, e.h), (e.c, e.a)]
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119 True
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120 >>> list(evalPath(g, (e.c, e.p3*ZeroOrMore, None))) == [(e.c, e.c),
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121 ... (e.c, e.g), (e.c, e.h), (e.c, e.a)]
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122 True
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123 >>> list(evalPath(g, (e.a, -e.p1, None))) == [(e.a, e.f)]
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124 True
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125 >>> list(evalPath(g, (e.a, -(e.p1|e.p2), None))) == []
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126 True
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127 >>> list(evalPath(g, (e.g, -~e.p2, None))) == [(e.g, e.j)]
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128 True
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129 >>> list(evalPath(g, (e.e, ~(e.p1/e.p2), None))) == [(e.e, e.a)]
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130 True
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131 >>> list(evalPath(g, (e.a, e.p1/e.p3/e.p3, None))) == [(e.a, e.h)]
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132 True
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133
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134 >>> list(evalPath(g, (e.q, e.px*OneOrMore, None)))
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135 [(rdflib.term.URIRef(u'ex:q'), rdflib.term.URIRef(u'ex:q'))]
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136
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137 >>> list(evalPath(g, (None, e.p1|e.p2, e.c)))
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138 [(rdflib.term.URIRef(u'ex:a'), rdflib.term.URIRef(u'ex:c'))]
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139
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140 >>> list(evalPath(g, (None, ~e.p1, e.a))) == [ (e.c, e.a) ]
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141 True
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142 >>> list(evalPath(g, (None, e.p1*ZeroOrOne, e.c))) # doctest: +NORMALIZE_WHITESPACE
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143 [(rdflib.term.URIRef(u'ex:c'), rdflib.term.URIRef(u'ex:c')),
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144 (rdflib.term.URIRef(u'ex:a'), rdflib.term.URIRef(u'ex:c'))]
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145
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146 >>> list(evalPath(g, (None, e.p3*OneOrMore, e.a))) # doctest: +NORMALIZE_WHITESPACE
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147 [(rdflib.term.URIRef(u'ex:h'), rdflib.term.URIRef(u'ex:a')),
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148 (rdflib.term.URIRef(u'ex:g'), rdflib.term.URIRef(u'ex:a')),
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149 (rdflib.term.URIRef(u'ex:c'), rdflib.term.URIRef(u'ex:a'))]
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150
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151 >>> list(evalPath(g, (None, e.p3*ZeroOrMore, e.a))) # doctest: +NORMALIZE_WHITESPACE
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152 [(rdflib.term.URIRef(u'ex:a'), rdflib.term.URIRef(u'ex:a')),
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153 (rdflib.term.URIRef(u'ex:h'), rdflib.term.URIRef(u'ex:a')),
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154 (rdflib.term.URIRef(u'ex:g'), rdflib.term.URIRef(u'ex:a')),
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155 (rdflib.term.URIRef(u'ex:c'), rdflib.term.URIRef(u'ex:a'))]
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156
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157 >>> list(evalPath(g, (None, -e.p1, e.f))) == [(e.a, e.f)]
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158 True
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159 >>> list(evalPath(g, (None, -(e.p1|e.p2), e.c))) == []
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160 True
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161 >>> list(evalPath(g, (None, -~e.p2, e.j))) == [(e.g, e.j)]
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162 True
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163 >>> list(evalPath(g, (None, ~(e.p1/e.p2), e.a))) == [(e.e, e.a)]
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164 True
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165 >>> list(evalPath(g, (None, e.p1/e.p3/e.p3, e.h))) == [(e.a, e.h)]
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166 True
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167
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168 >>> list(evalPath(g, (e.q, e.px*OneOrMore, None)))
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169 [(rdflib.term.URIRef(u'ex:q'), rdflib.term.URIRef(u'ex:q'))]
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170
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171 >>> list(evalPath(g, (e.c, (e.p2|e.p3)*ZeroOrMore, e.j)))
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172 [(rdflib.term.URIRef(u'ex:c'), rdflib.term.URIRef(u'ex:j'))]
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173
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174 No vars specified:
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175
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176 >>> sorted(list(evalPath(g, (None, e.p3*OneOrMore, None)))) #doctest: +NORMALIZE_WHITESPACE
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177 [(rdflib.term.URIRef(u'ex:c'), rdflib.term.URIRef(u'ex:a')),
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178 (rdflib.term.URIRef(u'ex:c'), rdflib.term.URIRef(u'ex:g')),
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179 (rdflib.term.URIRef(u'ex:c'), rdflib.term.URIRef(u'ex:h')),
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180 (rdflib.term.URIRef(u'ex:g'), rdflib.term.URIRef(u'ex:a')),
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181 (rdflib.term.URIRef(u'ex:g'), rdflib.term.URIRef(u'ex:h')),
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182 (rdflib.term.URIRef(u'ex:h'), rdflib.term.URIRef(u'ex:a'))]
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183
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184 .. versionadded:: 4.0
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185
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186 """
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187
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188
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189 from rdflib.term import URIRef, Node
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190
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191
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192 # property paths
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193
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194 ZeroOrMore = '*'
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195 OneOrMore = '+'
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196 ZeroOrOne = '?'
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197
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198
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199 class Path(object):
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200 def eval(self, graph, subj=None, obj=None):
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201 raise NotImplementedError()
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202
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203 def __hash__(self):
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204 return hash(repr(self))
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205
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206 def __eq__(self, other):
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207 return repr(self) == repr(other)
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208
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209 def __lt__(self, other):
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210 if not isinstance(other, (Path, Node)):
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211 raise TypeError('unorderable types: %s() < %s()' % (
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212 repr(self), repr(other)))
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213 return repr(self) < repr(other)
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214
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215 def __le__(self, other):
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216 if not isinstance(other, (Path, Node)):
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217 raise TypeError('unorderable types: %s() < %s()' % (
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218 repr(self), repr(other)))
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219 return repr(self) <= repr(other)
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220
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221 def __ne__(self, other):
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222 return not self == other
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223
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224 def __gt__(self, other):
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225 return not self <= other
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226
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227 def __ge__(self, other):
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228 return not self < other
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229
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230
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231 class InvPath(Path):
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232
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233 def __init__(self, arg):
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234 self.arg = arg
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235
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236 def eval(self, graph, subj=None, obj=None):
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diff changeset
237 for s, o in evalPath(graph, (obj, self.arg, subj)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
238 yield o, s
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
239
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parents:
diff changeset
240 def __repr__(self):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
diff changeset
241 return "Path(~%s)" % (self.arg,)
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parents:
diff changeset
242
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
243 def n3(self):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
244 return '^%s' % self.arg.n3()
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parents:
diff changeset
245
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parents:
diff changeset
246
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parents:
diff changeset
247 class SequencePath(Path):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
diff changeset
248 def __init__(self, *args):
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parents:
diff changeset
249 self.args = []
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parents:
diff changeset
250 for a in args:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
251 if isinstance(a, SequencePath):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
diff changeset
252 self.args += a.args
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
diff changeset
253 else:
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parents:
diff changeset
254 self.args.append(a)
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parents:
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255
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parents:
diff changeset
256 def eval(self, graph, subj=None, obj=None):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
diff changeset
257 def _eval_seq(paths, subj, obj):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
258 if paths[1:]:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
259 for s, o in evalPath(graph, (subj, paths[0], None)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
260 for r in _eval_seq(paths[1:], o, obj):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
261 yield s, r[1]
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
262
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
263 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
264 for s, o in evalPath(graph, (subj, paths[0], obj)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
265 yield s, o
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
266
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parents:
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267 def _eval_seq_bw(paths, subj, obj):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
268 if paths[:-1]:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
269 for s, o in evalPath(graph, (None, paths[-1], obj)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
270 for r in _eval_seq(paths[:-1], subj, s):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
271 yield r[0], o
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
272
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
273 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
274 for s, o in evalPath(graph, (subj, paths[0], obj)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
275 yield s, o
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
276
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
277 if subj:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
278 return _eval_seq(self.args, subj, obj)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
279 elif obj:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
280 return _eval_seq_bw(self.args, subj, obj)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
281 else: # no vars bound, we can start anywhere
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
282 return _eval_seq(self.args, subj, obj)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
283
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
284 def __repr__(self):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
285 return "Path(%s)" % " / ".join(str(x) for x in self.args)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
286
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
287 def n3(self):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
288 return '/'.join(a.n3() for a in self.args)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
diff changeset
289
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
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290
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
diff changeset
291 class AlternativePath(Path):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
diff changeset
292 def __init__(self, *args):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
diff changeset
293 self.args = []
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
diff changeset
294 for a in args:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
295 if isinstance(a, AlternativePath):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
diff changeset
296 self.args += a.args
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
297 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
298 self.args.append(a)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
299
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
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parents:
diff changeset
300 def eval(self, graph, subj=None, obj=None):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
301 for x in self.args:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
302 for y in evalPath(graph, (subj, x, obj)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
303 yield y
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
304
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
305 def __repr__(self):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
306 return "Path(%s)" % " | ".join(str(x) for x in self.args)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
307
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
308 def n3(self):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
309 return '|'.join(a.n3() for a in self.args)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
310
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
311
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
312 class MulPath(Path):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
313 def __init__(self, path, mod):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
314 self.path = path
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
315 self.mod = mod
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
316
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
317 if mod == ZeroOrOne:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
318 self.zero = True
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
319 self.more = False
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
320 elif mod == ZeroOrMore:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
321 self.zero = True
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
322 self.more = True
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
323 elif mod == OneOrMore:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
324 self.zero = False
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
325 self.more = True
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
326 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
327 raise Exception('Unknown modifier %s' % mod)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
328
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
329 def eval(self, graph, subj=None, obj=None, first=True):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
330 if self.zero and first:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
331 if subj and obj:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
332 if subj == obj:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
333 yield (subj, obj)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
334 elif subj:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
335 yield (subj, subj)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
336 elif obj:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
337 yield (obj, obj)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
338
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
339 def _fwd(subj=None, obj=None, seen=None):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
340 seen.add(subj)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
341
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
342 for s, o in evalPath(graph, (subj, self.path, None)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
343 if not obj or o == obj:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
344 yield s, o
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
345 if self.more:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
346 if o in seen:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
347 continue
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
348 for s2, o2 in _fwd(o, obj, seen):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
349 yield s, o2
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
350
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
351 def _bwd(subj=None, obj=None, seen=None):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
352 seen.add(obj)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
353
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
354 for s, o in evalPath(graph, (None, self.path, obj)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
355 if not subj or subj == s:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
356 yield s, o
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
357 if self.more:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
358 if s in seen:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
359 continue
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
360
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
361 for s2, o2 in _bwd(None, s, seen):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
362 yield s2, o
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
363
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
364 def _all_fwd_paths():
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
365 if self.zero:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
366 seen1 = set()
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
367 # According to the spec, ALL nodes are possible solutions
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
368 # (even literals)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
369 # we cannot do this without going through ALL triples
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
370 # unless we keep an index of all terms somehow
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
371 # but lets just hope this query doesnt happen very often...
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
372 for s, o in graph.subject_objects(None):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
373 if s not in seen1:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
374 seen1.add(s)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
375 yield s, s
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
376 if o not in seen1:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
377 seen1.add(o)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
378 yield o, o
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
379
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
380 seen = set()
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
381 for s, o in evalPath(graph, (None, self.path, None)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
382 if not self.more:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
383 yield s, o
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
384 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
385 if s not in seen:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
386 seen.add(s)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
387 f = list(_fwd(s, None, set()))
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
388 for s1, o1 in f:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
389 assert s1 == s
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
390 yield(s1, o1)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
391
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
392 done = set() # the spec does by defn. not allow duplicates
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
393 if subj:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
394 for x in _fwd(subj, obj, set()):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
395 if x not in done:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
396 done.add(x)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
397 yield x
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
398 elif obj:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
399 for x in _bwd(subj, obj, set()):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
400 if x not in done:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
401 done.add(x)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
402 yield x
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
403 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
404 for x in _all_fwd_paths():
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
405 if x not in done:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
406 done.add(x)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
407 yield x
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
408
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
409 def __repr__(self):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
410 return "Path(%s%s)" % (self.path, self.mod)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
411
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
412 def n3(self):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
413 return '%s%s' % (self.path.n3(), self.mod)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
414
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
415
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
416 class NegatedPath(Path):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
417 def __init__(self, arg):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
418 if isinstance(arg, (URIRef, InvPath)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
419 self.args = [arg]
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
420 elif isinstance(arg, AlternativePath):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
421 self.args = arg.args
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
422 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
423 raise Exception(
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
424 'Can only negate URIRefs, InvPaths or ' +
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
425 'AlternativePaths, not: %s' % (arg,))
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
426
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
427 def eval(self, graph, subj=None, obj=None):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
428 for s, p, o in graph.triples((subj, None, obj)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
429 for a in self.args:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
430 if isinstance(a, URIRef):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
431 if p == a:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
432 break
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
433 elif isinstance(a, InvPath):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
434 if (o, a.arg, s) in graph:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
435 break
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
436 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
437 raise Exception('Invalid path in NegatedPath: %s' % a)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
438 else:
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
439 yield s, o
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
440
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
441 def __repr__(self):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
442 return "Path(! %s)" % ",".join(str(x) for x in self.args)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
443
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
444 def n3(self):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
445 return '!(%s)' % ('|'.join(self.args))
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
446
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
447
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
448 class PathList(list):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
449 pass
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
450
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
451
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
452 def path_alternative(self, other):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
453 """
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
454 alternative path
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
455 """
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
456 if not isinstance(other, (URIRef, Path)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
457 raise Exception('Only URIRefs or Paths can be in paths!')
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
458 return AlternativePath(self, other)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
459
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
460
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
461 def path_sequence(self, other):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
462 """
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
463 sequence path
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
464 """
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
465 if not isinstance(other, (URIRef, Path)):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
466 raise Exception('Only URIRefs or Paths can be in paths!')
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
467 return SequencePath(self, other)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
468
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
469
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
470 def evalPath(graph, t):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
471 return ((s, o) for s, p, o in graph.triples(t))
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
472
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
473
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
474 def mul_path(p, mul):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
475 """
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
476 cardinality path
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
477 """
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
478 return MulPath(p, mul)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
479
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
480
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
481 def inv_path(p):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
482 """
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
483 inverse path
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
484 """
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
485 return InvPath(p)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
486
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
487
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
488 def neg_path(p):
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
489 """
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
490 negated path
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
491 """
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
492 return NegatedPath(p)
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
493
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
494
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
495 if __name__ == '__main__':
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
496
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
497 import doctest
4f3585e2f14b "planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
shellac
parents:
diff changeset
498 doctest.testmod()
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499 else:
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500 # monkey patch
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501 # (these cannot be directly in terms.py
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502 # as it would introduce circular imports)
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503
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504 URIRef.__or__ = path_alternative
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505 URIRef.__mul__ = mul_path
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506 URIRef.__invert__ = inv_path
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507 URIRef.__neg__ = neg_path
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508 URIRef.__truediv__ = path_sequence
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509 if not PY3:
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510 URIRef.__div__ = path_sequence
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511
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512 Path.__invert__ = inv_path
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513 Path.__neg__ = neg_path
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514 Path.__mul__ = mul_path
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515 Path.__or__ = path_alternative
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516 Path.__truediv__ = path_sequence
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517 if not PY3:
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518 Path.__div__ = path_sequence