[#BATCH-404] FactoryBeans for step configuration

Spring Batch

FactoryBeans for step configuration

Created: 01/Mar/08 05:09 PM Updated: 07/Aug/08 10:06 AM

Component/s:

Core

Affects Version/s:

1.0.0.m4

Fix Version/s:

1.0.0.m5

Time Tracking:

Not Specified

File Attachments:

itemProcessor.patch (65 kB)
2.

mylyn-context.zip (25 kB)

Description

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Create FactoryBeans for common ItemOrientedStep use cases. Right now I have everything shoved into a single class (SimpleStepFactoryBean), but the plan is to spend some time tomorrow refactoring that into several special-purpose factories. That way we probably won't need so much logic in the ItemOrientedStep, and common configuration tasks will be easy.

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Dave Syer added a comment - 02/Mar/08 06:43 AM

Introduced Simple- and DefaultStepFactoryBean which cover all but one (retry) of the samples. Removed shouldFail() from ItemSkipPolicy because that is really an Exceptionhandler concern.

TODO: add feature for configuring skip limits and exception policies. Roughly speaking, user needs to be able to specify a list of exception classes with skip limits for input and output.

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Dave Syer added a comment - 02/Mar/08 11:28 AM

Attached itemProcessor.patch - an interesting strategy for sbstracting some of the tricky logic from ItemOrientedStep. The KitchenSink* implementation would need to be refactored into two separate implementations, one for simple skips and one for stateful retries.

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Dave Syer added a comment - 03/Mar/08 11:59 AM

Finished. ItemProcessor ended up as ItemHandler (it should be internal implementation detail anyway). The step factory beans are used in the samples.

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Dave Syer added a comment - 07/Aug/08 10:06 AM

Assume closed as resolved and released