python-oracledb/samples/plsql_collection.py

72 lines
2.6 KiB
Python

#------------------------------------------------------------------------------
# Copyright (c) 2016, 2022, Oracle and/or its affiliates.
#
# This software is dual-licensed to you under the Universal Permissive License
# (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
# 2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose
# either license.
#
# If you elect to accept the software under the Apache License, Version 2.0,
# the following applies:
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# plsql_collection.py
#
# Demonstrates how to get the value of a PL/SQL collection from a stored
# procedure.
#
# This feature is only available in Oracle Database 12.1 and higher.
#------------------------------------------------------------------------------
import oracledb
import sample_env
# determine whether to use python-oracledb thin mode or thick mode
if not sample_env.get_is_thin():
oracledb.init_oracle_client(lib_dir=sample_env.get_oracle_client())
connection = oracledb.connect(user=sample_env.get_main_user(),
password=sample_env.get_main_password(),
dsn=sample_env.get_connect_string())
# create a new empty object of the correct type.
# note the use of a PL/SQL type that is defined in a package
type_obj = connection.gettype("PKG_DEMO.UDT_STRINGLIST")
obj = type_obj.newobject()
# call the stored procedure which will populate the object
with connection.cursor() as cursor:
cursor.callproc("pkg_Demo.DemoCollectionOut", (obj,))
# show the indexes that are used by the collection
print("Indexes and values of collection:")
ix = obj.first()
while ix is not None:
print(ix, "->", obj.getelement(ix))
ix = obj.next(ix)
print()
# show the values as a simple list
print("Values of collection as list:")
print(obj.aslist())
print()
# show the values as a simple dictionary
print("Values of collection as dictionary:")
print(obj.asdict())
print()