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Add missing import; clarify example.

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Anthony Tuininga 2018-05-09 19:33:26 -06:00
parent 1dbfb60c61
commit 449d6b8b3c
1 changed files with 24 additions and 18 deletions
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42
samples/Editioning.py
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@ -1,5 +1,5 @@
#------------------------------------------------------------------------------
# Copyright 2016, 2017, Oracle and/or its affiliates. All rights reserved.
# Copyright 2016, 2018, Oracle and/or its affiliates. All rights reserved.
#
# Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
#
@ -9,10 +9,10 @@
#------------------------------------------------------------------------------
# Editioning.py
# This script demonstrates the use of editioning, available in Oracle
# Database 11.2 and higher. See the Oracle documentation on the subject for
# additional information. Adjust the contants at the top of the script for
# your own database as needed.
# This script demonstrates the use of Edition-Based Redefinition, available
# in Oracle# Database 11.2 and higher. See the Oracle documentation on the
# subject for additional information. Adjust the contants at the top of the
# script for your own database as needed.
#
# This script requires cx_Oracle 5.3 and higher.
#------------------------------------------------------------------------------
@ -21,51 +21,57 @@ from __future__ import print_function
import cx_Oracle
import SampleEnv
import os
# connect to the editions user and create a procedure
connection = cx_Oracle.Connection(SampleEnv.EDITION_CONNECT_STRING)
print("Edition should be None at this point, actual value is",
connection.edition)
print("Edition should be None, actual value is:",
repr(connection.edition))
cursor = connection.cursor()
cursor.execute("""
create or replace function TestEditions return varchar2 as
begin
return 'Base Edition';
return 'Base Procedure';
end;""")
result = cursor.callfunc("TestEditions", str)
print("Function call should return Base Edition, actually returns", result)
print("Function should return 'Base Procedure', actually returns:",
repr(result))
# next, change the edition and recreate the procedure in the new edition
cursor.execute("alter session set edition = %s" % SampleEnv.EDITION_NAME)
print("Edition should be %s at this point, actual value is" % \
SampleEnv.EDITION_NAME.upper(), connection.edition)
print("Edition should be", repr(SampleEnv.EDITION_NAME.upper()),
"actual value is:", repr(connection.edition))
cursor.execute("""
create or replace function TestEditions return varchar2 as
begin
return 'Edition 1';
return 'Edition 1 Procedure';
end;""")
result = cursor.callfunc("TestEditions", str)
print("Function call should return Edition 1, actually returns", result)
print("Function should return 'Edition 1 Procedure', actually returns:",
repr(result))
# next, change the edition back to the base edition and demonstrate that the
# original function is being called
cursor.execute("alter session set edition = ORA$BASE")
result = cursor.callfunc("TestEditions", str)
print("Function call should return Base Edition, actually returns", result)
print("Function should return 'Base Procedure', actually returns:",
repr(result))
# the edition can be set upon connection
connection = cx_Oracle.Connection(SampleEnv.EDITION_CONNECT_STRING,
edition = SampleEnv.EDITION_NAME.upper())
cursor = connection.cursor()
result = cursor.callfunc("TestEditions", str)
print("Function call should return Edition 1, actually returns", result)
print("Function should return 'Edition 1 Procedure', actually returns:",
repr(result))
# it can also be set via the environment variable ORA_EDITION
os.environ["ORA_EDITION"] = SampleEnv.EDITION_NAME.upper()
connection = cx_Oracle.Connection(SampleEnv.EDITION_CONNECT_STRING)
print("Edition should be %s at this point, actual value is" % \
SampleEnv.EDITION_NAME.upper(), connection.edition)
print("Edition should be", repr(SampleEnv.EDITION_NAME.upper()),
"actual value is:", repr(connection.edition))
cursor = connection.cursor()
result = cursor.callfunc("TestEditions", str)
print("Function call should return Edition 1, actually returns", result)
print("Function should return 'Edition 1 Procedure', actually returns:",
repr(result))