XML Aggregator [INT-571]

David Geary opened INT-571 and commented

A simple XML aggregator that combines several XML documents into one with simple wrapper elements eg

<spring-integration-aggregated-document>
<aggregated-part>
document 1 contents
</aggregated-part>
<aggregated-part>
document 2 contents
</aggregated-part>
<aggregated-part>
document 3 contents
</aggregated-part>
<spring-integration-aggregated-document>

Example usage:

An XML message need to be transformed and forwarded to an endpoint, but as part of the transformation requires extra information from a web service call.

The XML message could be split into two copies, one copy transformed and sent to the web service endpoint, the result of this could then be recombined with the other copy (using the xml aggregator) before a final transformation (making use of all the data now available) and sent to the final endpoint

Similarly this could be used to aggregate information from multiple web service calls.

This would work with both string and node/document payloads and produce the same payload type on the output channel (assuming all input messages are of the same type)

This would also include spring integration namespace support for simple configuration.

No further details from INT-571

Start with the issue description and linked INT-571 request to clarify the intended XML aggregation behavior, payload types, and Spring Integration namespace configuration. Done should include aggregation of multiple XML messages with wrapper elements, preservation of string or node/document payload types, and simple namespace-based configuration, but the issue names no files or tests.