91 lines
2.8 KiB
ReStructuredText
91 lines
2.8 KiB
ReStructuredText
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SpiffWorkflow Exceptions
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====================================
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Details about the exceptions and exception hierarchy within SpiffWorkflow
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SpiffWorkflowException
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----------
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Base exception for all exceptions raised by SpiffWorkflow
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ValidationException
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----------
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**Extends**
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SpiffWorkflowException
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Thrown during the parsing of a workflow.
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**Attributes/Methods**
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- **tag**: The type of xml tag being parsed
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- **id**: the id attribute of the xml tag, if available.
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- **name**: the name attribute of the xml tag, if available.
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- **line_number**: the line number where the tag occurs.
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- **file_name**: The name of the file where the error occurred.
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- **message**: a human readable error message.
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WorkflowException
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--------
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When an error occurs with a Task Specification (maybe should have been called
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a SpecException)
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**Extends**
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SpiffWorkflowException
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**Attributes/Methods**
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- **sender**: The TaskSpec - the specific Task, Gateway, etc... that caused the error to happen.
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- **error**: a human readable error message describing the problem.
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- **get_task_trace**: Provided a specific Task, will work it's way through the workflow / sub-processes
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and call activities to show where an error occurred. Useful if the error happened within a deeply nested structure (where call activities include call activities ....)
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WorkflowDataException
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------------------
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When an exception occurs moving data between tasks and Data Objects (including
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data inputs and data outputs.)
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**Extends**
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WorkflowException
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**Attributes/Methods**
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(in addition to the values in a WorkflowException)
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- **task**: The specific task (not the task spec, but the actual executing task)
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- **data_input**: The spec of the input variable
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- **data_output**: The spec of the output variable
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WorkflowTaskException
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--------
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**Extends**
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WorkflowException
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**Attributes/Methods**
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(in addition to the values in a WorkflowException)
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- **task**: The specific task (not the task spec, but the actual executing task)
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- **error_msg**: The detailed human readable message. (conflicts with error above)
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- **exception**: The original exception this wraps around.
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- **line_number** The line number that contains the error
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- **offset** The point in the line that caused the error
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- **error_line** The content of the line that caused the error.
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It will accept the line_number and error_line as arguments - if the
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underlying error provided is a SyntaxError it will try to derive this
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information from the error.
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If this is a name error, it will attempt to calculate a did-you-mean
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error_msg.
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Unused / Deprecated errors
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--------------------
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** StorageException **
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Deprecated -- Used only by the PrettyXmlSerializer - which is not under active
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support.
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** DeadMethodCalled **
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Something related to WeakMethod -- which doesn't look to be utilized anymore.
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