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""" |
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Enarksh |
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Copyright 2013-2016 Set Based IT Consultancy |
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Licence MIT |
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""" |
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import abc |
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from xml.etree.ElementTree import Element |
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from enarksh.XmlReader.Dependency import Dependency |
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class Port: |
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# ------------------------------------------------------------------------------------------------------------------ |
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def __init__(self, node): |
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self._dependencies = [] |
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""" |
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The dependencies of this port. |
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:type: list |
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""" |
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self._node = node |
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""" |
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The node (owner) of this port. |
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:type: Node |
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""" |
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self._port_name = '' |
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""" |
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The port name of this port. |
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:type: str |
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""" |
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self._prt_id = 0 |
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""" |
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The ID of this port when it is stored in the database. |
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:type: int |
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""" |
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# ------------------------------------------------------------------------------------------------------------------ |
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@property |
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def name(self): |
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""" |
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Returns the name of this port. |
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:rtype: str |
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""" |
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return self._port_name |
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# ------------------------------------------------------------------------------------------------------------------ |
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@property |
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def node(self): |
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""" |
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Returns the node of this port. |
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:rtype: Node |
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""" |
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return self._node |
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# ------------------------------------------------------------------------------------------------------------------ |
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@property |
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def prt_id(self): |
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""" |
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Returns the ID of this port. |
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:rtype: int |
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""" |
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return self._prt_id |
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# ------------------------------------------------------------------------------------------------------------------ |
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def read_xml(self, xml): |
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""" |
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:param xml.etree.ElementTree.Element xml: |
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""" |
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for element in list(xml): |
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self.read_xml_element(element) |
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# ------------------------------------------------------------------------------------------------------------------ |
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def read_xml_element(self, xml): |
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""" |
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:param xml.etree.ElementTree.Element xml: |
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""" |
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tag = xml.tag |
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if tag == 'PortName': |
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self._port_name = xml.text |
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elif tag == 'Dependencies': |
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self._read_xml_dependencies(xml) |
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else: |
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raise Exception("Unexpected tag '{0!s}'.".format(tag)) |
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# ------------------------------------------------------------------------------------------------------------------ |
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def _read_xml_dependencies(self, xml): |
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""" |
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:param xml.etree.ElementTree.Element xml: |
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""" |
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for element in list(xml): |
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tag = element.tag |
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if tag == 'Dependency': |
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dependency = Dependency(self) |
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dependency.read_xml(element) |
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self._dependencies.append(dependency) |
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else: |
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raise Exception("Unexpected tag '{0!s}'.".format(tag)) |
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# ------------------------------------------------------------------------------------------------------------------ |
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def validate(self, errors): |
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""" |
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Validates this port against rules which are not imposed by XSD. |
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:param list errors: A list of error messages. |
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""" |
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for dependency in self._dependencies: |
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dependency.validate(errors) |
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# ------------------------------------------------------------------------------------------------------------------ |
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@abc.abstractmethod |
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def store(self, nod_id): |
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""" |
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Stores the definition of this port into the database. |
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:param int nod_id: The ID of the node to which this node belongs |
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""" |
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pass |
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# ------------------------------------------------------------------------------------------------------------------ |
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@abc.abstractmethod |
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def store_dependencies(self): |
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""" |
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Stores the dependencies of this port into the database. |
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""" |
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pass |
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# ---------------------------------------------------------------------------------------------------------------------- |
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SetBased /
py-enarksh
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