如何在Apache Nifi中实现ExtractCCDAAttributes处理器？

Question

I am on the process to extract some healthcare Data. Initially started with CCDA which is XML file format. How can i config the ExtractCCDAAttributes to extract the attributes with its value?

Answer 1

You can refer to this minimal flow that demonstrates use of ExtractCCDAAttributes processor.

1) Get CDA Document (Processor type: GetFile )

This will create a FlowFile with the document contents. The sample data file (XML) used is available here .

2) ExtractCCDAAttributes (Processor type: ExtractCCDAAttributes )

This processor has a single property ( Skip Validation ) to indicate whether or not to validate CDA message values. We accept the default value of true . The processor outputs individual attributes as FlowFile attributes.

3) Success (Processor type: LogAttribute )

This is to log attributes upon success of ExtractCCDAAttributes processor.

4) Failure (Processor type: LogAttribute )

This is to log attributes upon failure of ExtractCCDAAttributes processor.

Verification:

When the sample file is processed, two of the (many) attributes logged by the Success processor are:

Key: 'vitalSignsSection.organizer_01.observations_02.code.displayName'
    Value: 'Intravascular Systolic'

Key: 'vitalSignsSection.organizer_02.observations_03.code.displayName'
    Value: 'Intravascular Systolic'

In the sample file, the two places where these appear are on lines 3592 and 3700:

and