77 lines
3.1 KiB
Python
77 lines
3.1 KiB
Python
#------------------------------------------------------------------------------
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# Copyright (c) 2016, 2021, Oracle and/or its affiliates. All rights reserved.
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#
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# Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
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#
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# Portions Copyright 2001-2007, Computronix (Canada) Ltd., Edmonton, Alberta,
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# Canada. All rights reserved.
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# editioning.py
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# This script demonstrates the use of Edition-Based Redefinition, available
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# in Oracle# Database 11.2 and higher. See the Oracle documentation on the
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# subject for additional information. Adjust the contants at the top of the
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# script for your own database as needed.
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#
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# This script requires cx_Oracle 5.3 and higher.
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#------------------------------------------------------------------------------
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import os
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import cx_Oracle as oracledb
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import sample_env
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# connect to the editions user and create a procedure
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edition_connect_string = sample_env.get_edition_connect_string()
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edition_name = sample_env.get_edition_name()
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connection = oracledb.connect(edition_connect_string)
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print("Edition should be None, actual value is:", repr(connection.edition))
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cursor = connection.cursor()
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cursor.execute("""
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create or replace function TestEditions return varchar2 as
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begin
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return 'Base Procedure';
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end;""")
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result = cursor.callfunc("TestEditions", str)
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print("Function should return 'Base Procedure', actually returns:",
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repr(result))
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# next, change the edition and recreate the procedure in the new edition
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cursor.execute("alter session set edition = %s" % edition_name)
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print("Edition should be", repr(edition_name.upper()),
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"actual value is:", repr(connection.edition))
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cursor.execute("""
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create or replace function TestEditions return varchar2 as
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begin
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return 'Edition 1 Procedure';
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end;""")
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result = cursor.callfunc("TestEditions", str)
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print("Function should return 'Edition 1 Procedure', actually returns:",
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repr(result))
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# next, change the edition back to the base edition and demonstrate that the
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# original function is being called
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cursor.execute("alter session set edition = ORA$BASE")
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result = cursor.callfunc("TestEditions", str)
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print("Function should return 'Base Procedure', actually returns:",
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repr(result))
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# the edition can be set upon connection
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connection = oracledb.connect(edition_connect_string,
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edition=edition_name.upper())
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cursor = connection.cursor()
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result = cursor.callfunc("TestEditions", str)
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print("Function should return 'Edition 1 Procedure', actually returns:",
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repr(result))
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# it can also be set via the environment variable ORA_EDITION
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os.environ["ORA_EDITION"] = edition_name.upper()
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connection = oracledb.connect(edition_connect_string)
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print("Edition should be", repr(edition_name.upper()),
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"actual value is:", repr(connection.edition))
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cursor = connection.cursor()
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result = cursor.callfunc("TestEditions", str)
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print("Function should return 'Edition 1 Procedure', actually returns:",
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repr(result))
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