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11e4b4f96 fix two incorrectly names attributes in node parser abec918a8 Merge pull request #291 from rachfop/fix-grammar a597f9ce9 Fixes grammar, typos, and spellings 00ffaf067 Assure that when something goes wrong calling a service task that we get as much good information about the problem as possible. c044b5646 Fix that dreadful unknown "KeyError" exception that was cropping up. Adding a bit of detail to the spiffworkflow exceptions when a duplicate process model is found. Disable the submit button on tasks after you click submit (avoid the double click and give users a better experience) git-subtree-dir: SpiffWorkflow git-subtree-split: 11e4b4f96f03a036bd29632f1560e347a4e69aae
79 lines
2.1 KiB
ReStructuredText
79 lines
2.1 KiB
ReStructuredText
BPMN Workflows
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==============
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The basic idea of SpiffWorkflow is that you can use it to write an interpreter
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in Python that creates business applications from BPMN models. In this section,
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we'll develop a model of an example process and as well as a
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simple workflow runner.
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We expect that readers will fall into two general categories:
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- People with a background in BPMN who might not be very familiar Python
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- Python developers who might not know much about BPMN
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This section of the documentation provides an example that (hopefully) serves
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the needs of both groups. We will introduce the BPMN elements that SpiffWorkflow
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supports and show how to build a simple workflow runner around them.
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SpiffWorkflow does heavy-lifting such as keeping track of task dependencies and
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states and providing the ability to serialize or deserialize a workflow that
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has not been completed. The developer will write code for displaying workflow
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state and presenting tasks to users of their application.
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All the Python code and BPMN models used here are available in an example
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project called `spiff-example-cli <https://github.com/sartography/spiff-example-cli>`_.
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Quickstart
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----------
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Check out the code in `spiff-example-cli <https://github.com/sartography/spiff-example-cli>`_
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and follow the instructions to set up an environment to run it in.
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Run the sample workflow we built up using our example application with the following
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command:
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.. code-block:: console
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./run.py -p order_product \
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-d bpmn/{product_prices,shipping_costs}.dmn \
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-b bpmn/{multiinstance,call_activity_multi}.bpmn
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For a full description of program options:
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.. code-block:: console
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./run.py --help
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The code in the workflow runner and the models in the bpmn directory of the
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repository will be discussed in the remainder of this tutorial.
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Supported BPMN Elements
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-----------------------
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.. toctree::
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:maxdepth: 3
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tasks
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gateways
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organization
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events
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multiinstance
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spiff-extensions
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Putting it All Together
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-----------------------
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.. toctree::
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:maxdepth: 2
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synthesis
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Features in More Depth
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----------------------
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.. toctree::
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:maxdepth: 2
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advanced
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