74d9d71484
tests. Although the two are aliases of one another, it makes sense to be consistent and to use the one that the DB API prefers as well.
65 lines
2.2 KiB
Python
65 lines
2.2 KiB
Python
#------------------------------------------------------------------------------
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# Copyright (c) 2016, 2018, 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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# AdvancedQueuing.py
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# This script demonstrates how to use advanced queuing using cx_Oracle. It
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# makes use of a simple type and queue created in the sample setup.
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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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from __future__ import print_function
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BOOK_TYPE_NAME = "UDT_BOOK"
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QUEUE_NAME = "BOOKS"
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QUEUE_TABLE_NAME = "BOOK_QUEUE"
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import cx_Oracle
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import SampleEnv
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import decimal
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# connect to database
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connection = cx_Oracle.connect(SampleEnv.MAIN_CONNECT_STRING)
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cursor = connection.cursor()
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# dequeue all existing messages to ensure the queue is empty, just so that
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# the results are consistent
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booksType = connection.gettype(BOOK_TYPE_NAME)
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book = booksType.newobject()
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options = connection.deqoptions()
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options.wait = cx_Oracle.DEQ_NO_WAIT
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messageProperties = connection.msgproperties()
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while connection.deq(QUEUE_NAME, options, messageProperties, book):
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pass
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# enqueue a few messages
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book1 = booksType.newobject()
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book1.TITLE = "The Fellowship of the Ring"
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book1.AUTHORS = "Tolkien, J.R.R."
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book1.PRICE = decimal.Decimal("10.99")
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book2 = booksType.newobject()
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book2.TITLE = "Harry Potter and the Philosopher's Stone"
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book2.AUTHORS = "Rowling, J.K."
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book2.PRICE = decimal.Decimal("7.99")
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options = connection.enqoptions()
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for book in (book1, book2):
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print("Enqueuing book", book.TITLE)
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connection.enq(QUEUE_NAME, options, messageProperties, book)
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connection.commit()
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# dequeue the messages
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options = connection.deqoptions()
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options.navigation = cx_Oracle.DEQ_FIRST_MSG
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options.wait = cx_Oracle.DEQ_NO_WAIT
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while connection.deq(QUEUE_NAME, options, messageProperties, book):
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print("Dequeued book", book.TITLE)
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connection.commit()
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