AWS DataPipeline EvaluateExpression using java SDK

Question

With the help of AWS DataPipeline API, I'm trying to evaluate the expression below,

sometext-#{format(@scheduledStartTime, 'YYYYMMddHHmmss')

I have used "PipelineObject" which looks like this:

Id:@MyPipelineObject_2018-08-26T01:00:00

Name:@MyPipelineObject_2018-08-26T01:00:00

     - Key:@scheduledStartTime

     - StringValue:2018-08-26T01:00:00

     - Key:@scheduledEndTime

     - StringValue:2018-08-27T01:00:00

So how can I evaluate the expression when I know the Pipeline and pipelineObjectId?

Answer 1

Here the DataPipeline has a method "evaluateExpression()" that takes an EvaluateExpressionRequest and returns the EvaluateExpressionResult.

You'll get an evaluated results just by calling 'getEvaluateExpression' on the returned object.

EvaluateExpressionRequest evaluateExpressionRequest = new EvaluateExpressionRequest()

                .withPipelineId(myPipelineId)

                .withExpression(expressionToBeEvaluated)

                .withObjectId(myPipelineObjectId);

dataPipeline.evaluateExpression(evaluateExpressionRequest).getEvaluatedExpression(); //evaluates to sometext-20180826010000

Hope that helps!

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