/**
* Gets or creates a {@link TransformerJob} for a particular {@link TransformerComponentBuilder}.
* Since {@link MultiStreamComponent}s are subtypes of {@link Transformer} it is necesary to have
* this caching mechanism in place in order to allow diamond-shaped component graphs where
* multiple streams include the same component.
*
* @param validate
* @param tjb
* @return
*/
public TransformerJob getOrCreateTransformerJob(
boolean validate, TransformerComponentBuilder<?> tjb) {
TransformerJob componentJob = (TransformerJob) _componentJobs.get(tjb);
if (componentJob == null) {
try {
componentJob = tjb.toTransformerJob(validate, this);
_componentJobs.put(tjb, componentJob);
} catch (IllegalStateException e) {
throw new IllegalStateException(
"Could not create transformer job from builder: " + tjb + ", (" + e.getMessage() + ")",
e);
}
}
return componentJob;
}
