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45f2e35a99
Currently supported objects are Table, View, Materialized View, Function and Procedure. Backend comparison of two schemas implemented by: Akshay Joshi Fixes #3452.
62 lines
2.0 KiB
Python
62 lines
2.0 KiB
Python
##########################################################################
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#
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# pgAdmin 4 - PostgreSQL Tools
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#
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# Copyright (C) 2013 - 2020, The pgAdmin Development Team
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# This software is released under the PostgreSQL Licence
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#
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##########################################################################
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class SchemaDiffRegistry(object):
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"""
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SchemaDiffRegistry
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It is more of a registry for different type of nodes for schema diff.
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"""
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_registered_nodes = dict()
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def __init__(self, node_name, node_view, parent_node='schema'):
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if node_name not in SchemaDiffRegistry._registered_nodes:
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SchemaDiffRegistry._registered_nodes[node_name] = {
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'view': node_view,
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'parent': parent_node
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}
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@classmethod
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def get_registered_nodes(cls, node_name=None, parent_node='schema'):
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"""
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This function will return the node's view object if node name
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is specified or return the complete list of registered nodes.
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:param node_name: Name of the node ex: Database, Schema, etc..
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:return:
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"""
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if node_name is not None:
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if node_name in cls._registered_nodes:
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return cls._registered_nodes[node_name]['view']
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else:
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return None
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registered_nodes = {}
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for key, value in cls._registered_nodes.items():
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if value['parent'] == parent_node:
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registered_nodes[key] = value['view']
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return registered_nodes
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@classmethod
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def get_node_view(cls, node_name):
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"""
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This function will return the view object for the "nodes"
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command as per the specified node name.
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:param node_name: Name of the node ex: Database, Schema, etc..
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:return:
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"""
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cmd = {"cmd": "nodes, compare, ddl_compare"}
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module = SchemaDiffRegistry.get_registered_nodes(node_name)
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if not module:
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return None
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return module(**cmd)
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