# -----------------------------------------------------------------------------
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#
# Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
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# Portions Copyright 2001-2007, Computronix (Canada) Ltd., Edmonton, Alberta,
# Canada. All rights reserved.
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# (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
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# either license.
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# -----------------------------------------------------------------------------
# rows_as_instance.py
#
# Returns rows as instances instead of tuples. See the ceDatabase.Row class
# in the cx_PyGenLib project (http://cx-pygenlib.sourceforge.net) for a more
# advanced example.
# -----------------------------------------------------------------------------

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())


class Test:
    def __init__(self, a, b, c):
        self.a = a
        self.b = b
        self.c = c


connection = oracledb.connect(
    user=sample_env.get_main_user(),
    password=sample_env.get_main_password(),
    dsn=sample_env.get_connect_string(),
    params=sample_env.get_connect_params(),
)

with connection.cursor() as cursor:
    # create sample data
    cursor.execute(
        """
        begin
            begin
                execute immediate 'drop table TestInstances';
            exception
            when others then
                if sqlcode <> -942 then
                    raise;
                end if;
            end;

            execute immediate 'create table TestInstances (
                                 a varchar2(60) not null,
                                 b number(9) not null,
                                 c date not null)';

            execute immediate
                    'insert into TestInstances values (''First'', 5, sysdate)';

            execute immediate
                    'insert into TestInstances
                    values (''Second'', 25, sysdate)';

            commit;
        end;
        """
    )

    # retrieve the data and display it
    cursor.execute("select * from TestInstances")
    cursor.rowfactory = Test
    print("Rows:")
    for row in cursor:
        print("a = %s, b = %s, c = %s" % (row.a, row.b, row.c))