Perl-Event-XML-Sync 1.0 - A Perl module to run synchronized XML stream.

This module may be used to developp application wrappers to be installed in XML pipelines.

The wrapper expects some XML input. It sends some bits of information to the wrapped application and information the returned information (when arriving) in the input XML stream (by adding, modifying or deleting XML elements). Output XML is produced for the next wrapper in the pipeline.

The key point is that wrappers are non-blocking, i.e. a wrapper do not stop waiting for information to be returned by the wrapped application. To achieve that, the wrapper needs some kind of synchronization to correlate the returned information with the input XML stream.