Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/prov/identifier.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 from __future__ import (absolute_import, division, print_function,
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2 unicode_literals)
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3
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4 import six
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5
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6 __author__ = 'Trung Dong Huynh'
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7 __email__ = 'trungdong@donggiang.com'
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8
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9
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10 @six.python_2_unicode_compatible
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11 class Identifier(object):
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12 """Base class for all identifiers and also represents xsd:anyURI."""
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13 # TODO: make Identifier an "abstract" base class and move xsd:anyURI
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14 # into a subclass
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15
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16 def __init__(self, uri):
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17 """
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18 Constructor.
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19
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20 :param uri: URI string for the long namespace identifier.
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21 """
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22 self._uri = six.text_type(uri) # Ensure this is a unicode string
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23
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24 @property
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25 def uri(self):
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26 """Identifier's URI."""
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27 return self._uri
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28
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29 def __str__(self):
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30 return self._uri
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31
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32 def __eq__(self, other):
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33 return self.uri == other.uri if isinstance(other, Identifier) else False
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34
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35 def __hash__(self):
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36 return hash((self.uri, self.__class__))
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37
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38 def __repr__(self):
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39 return '<%s: %s>' % (self.__class__.__name__, self._uri)
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40
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41 def provn_representation(self):
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42 """PROV-N representation of qualified name in a string."""
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43 return '"%s" %%%% xsd:anyURI' % self._uri
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44
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45
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46 @six.python_2_unicode_compatible
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47 class QualifiedName(Identifier):
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48 """Qualified name of an identifier in a particular namespace."""
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49
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50 def __init__(self, namespace, localpart):
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51 """
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52 Constructor.
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53
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54 :param namespace: Namespace to use for qualified name resolution.
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55 :param localpart: Portion of identifier not part of the namespace prefix.
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56 """
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57 Identifier.__init__(self, u''.join([namespace.uri, localpart]))
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58 self._namespace = namespace
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59 self._localpart = localpart
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60 self._str = (
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61 ':'.join([namespace.prefix, localpart])
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62 if namespace.prefix else localpart
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63 )
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64
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65 @property
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66 def namespace(self):
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67 """Namespace of qualified name."""
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68 return self._namespace
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69
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70 @property
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71 def localpart(self):
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72 """Local part of qualified name."""
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73 return self._localpart
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74
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75 def __str__(self):
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76 return self._str
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77
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78 def __repr__(self):
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79 return '<%s: %s>' % (self.__class__.__name__, self._str)
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80
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81 def __hash__(self):
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82 return hash(self.uri)
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83
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84 def provn_representation(self):
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85 """PROV-N representation of qualified name in a string."""
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86 return "'%s'" % self._str
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87
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88
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89 class Namespace(object):
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90 """PROV Namespace."""
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91
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92 def __init__(self, prefix, uri):
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93 """
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94 Constructor.
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95
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96 :param prefix: String short hand prefix for the namespace.
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97 :param uri: URI string for the long namespace identifier.
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98 """
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99 self._prefix = prefix
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100 self._uri = uri
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101 self._cache = dict()
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102
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103 @property
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104 def uri(self):
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105 """Namespace URI."""
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106 return self._uri
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107
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108 @property
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109 def prefix(self):
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110 """Namespace prefix."""
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111 return self._prefix
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112
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113 def contains(self, identifier):
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114 """
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115 Indicates whether the identifier provided is contained in this namespace.
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116
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117 :param identifier: Identifier to check.
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118 :return: bool
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119 """
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120 uri = identifier if isinstance(identifier, six.string_types) else (
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121 identifier.uri if isinstance(identifier, Identifier) else None
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122 )
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123 return uri.startswith(self._uri) if uri else False
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124
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125 def qname(self, identifier):
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126 """
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127 Returns the qualified name of the identifier given using the namespace
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128 prefix.
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129
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130 :param identifier: Identifier to resolve to a qualified name.
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131 :return: :py:class:`QualifiedName`
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132 """
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133 uri = identifier if isinstance(identifier, six.string_types) else (
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134 identifier.uri if isinstance(identifier, Identifier) else None
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135 )
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136 if uri and uri.startswith(self._uri):
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137 return QualifiedName(self, uri[len(self._uri):])
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138 else:
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139 return None
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140
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141 def __eq__(self, other):
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142 return (
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143 (self._uri == other.uri and self._prefix == other.prefix)
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144 if isinstance(other, Namespace) else False
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145 )
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146
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147 def __ne__(self, other):
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148 return (
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149 not isinstance(other, Namespace) or
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150 self._uri != other.uri or
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151 self._prefix != other.prefix
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152 )
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153
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154 def __hash__(self):
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155 return hash((self._uri, self._prefix))
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156
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157 def __repr__(self):
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158 return '<%s: %s {%s}>' % (
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159 self.__class__.__name__, self._prefix, self._uri
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160 )
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161
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162 def __getitem__(self, localpart):
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163 if localpart in self._cache:
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164 return self._cache[localpart]
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165 else:
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166 qname = QualifiedName(self, localpart)
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167 self._cache[localpart] = qname
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168 return qname