Putting values in JobExecutionContext

[jaenswart]

Hi,

How do I put some values in the JobExecutionContext from a Tasklet?

I have tried the following, but getting back an error saying that the map is unmodifiable?

public RepeatStatus execute(StepContribution arg0, ChunkContext arg1) {

Sring value = "test";
		arg1.getStepContext().getJobExecutionContext().put("KEY", value);

[jaenswart]

Alos tried this in the tasklet:

public ExitStatus afterStep(StepExecution stepExecution) {
		
		Date now = new Date();
		
		stepExecution.getJobExecution().getExecutionContext().putString(PROV_CODE_KEY, province_code);
		stepExecution.getJobExecution().getExecutionContext().putString(ASS_BODY_CODE_KEY, ass_body_code);
		stepExecution.getJobExecution().getExecutionContext().putString(ASS_BODY_NAME_KEY, ass_body_name);
		stepExecution.getJobExecution().getExecutionContext().putLong(SEQ_RUN_NUMBER_KEY, seq_run_number);
		stepExecution.getJobExecution().getExecutionContext().putString(DAY_KEY, dayFormat.format(now));
		stepExecution.getJobExecution().getExecutionContext().putString(MONTH_KEY, monthFormat.format(now));
		stepExecution.getJobExecution().getExecutionContext().putString(YEAR_KEY, yearFormat.format(now));
		
		
		return ExitStatus.COMPLETED;
	}

Again no luck.

In the second step I try this:

<beans:property name="resource"
			value="file://c:/temp/OZEKS.E#{jobExecutionContext[PROV_CODE_KEY]}.I#{jobExecutionContext[ASS_BODY_CODE_KEY]}CS#{jobExecutionContext[SEQ_RUN_NUMBER_KEY]}.DA.#{jobExecutionContext[YEAR_KEY]}#{jobExecutionContext[MONTH_KEY]}#{jobExecutionContext[DAY_KEY]}.txt" />
	</beans:bean>

but they are not resolved.

[DHGarrette]

Your approach with the afterStep method seems right. Is your resource bean in the configuration "step-scoped"?

[jaenswart]

I'm using the delegate pattern in my resource bean (or lets call it my CustomFlatFileItemWriter).

As delegate I use the normal FlatFileItemWriter.

My CustomFlatFileItemwriter doesn't have a Resource field, only a setResource method which calls delegate.setResource.

In my config I configure the resource as above in my CustomFlatFileItemwriter, which is step scoped.

My delegate is not explicitly set as step scoped in the config . Could this be the problem?

[jaenswart]

Or is the step scoped bean actually the culprit? That surely doesn't sound right? Whether or not the resource bean is step scope shouldn't impact on the JobExecutionContext, or am I wrong?

[jaenswart]

Guys any input will help. I urgently need this to work, I have tried several different configs, playing around with step scope etc. It's still not resolving.

Let me break it down:

Step 1 = Tasklet with execute method
Retrieved data from my db needed in step 2 for the filename
I have tried setting this as normal and step scope

Step2 = Normal step, Reader, processor, compositewriter.
First writer in my compositeWriter is CustomFlatFileItemWriter with delegate
FlatfileItemWriter. Tried step scope on 1 and both.

Any furher Ideas, or will I be forced to used some kind of threaedlocal implementation to store my values?

[jaenswart]

Ok I tried something else. In my CustomFlatFileItemWriter I placed a breakpoint in the setResource method (that calls delegate.setResource) and I also implemented StepExecutionListener and the beforeStep method and registered my Writer as a listener to the step.

Funny thing, setResource is called first (even before beforeStep ) and at this time the EL does not get resolved.

If I continue my debug I next get into the beforeStep method, and on inspection my jobExecutionContext is populated with the correct values from my first step.

How can I get my EL late binding to work? Or should I just set my resource in java code in the beforeStep method (I'm sure it will complain)