Dynamic Configuration of the DPU Using RDF Configuration

This section contains a short guide on the dynamic configuration of a DPU.

Dynamic configuration allows a DPU to be configured dynamically over one of its input data unit (configuration input data unit).

If the DPU supporting dynamic configuration, receives certain configuration over its configuration input data unit, it is used instead of stored configuration for the given DPU. Dynamic configuration is defined in RDF data format.

Dynamic configuration support may be added to the DPU by defining RdfConfiguration extension:

@ExtensionInitializer.Init
public RdfConfiguration _rdfConfiguration;

Additionally you can define one of the input data units to the DPU as configuration data unit:

@RdfConfiguration.ContainsConfiguration
@DataUnit.AsInput(name = "config", optional = true)
public RDFDataUnit rdfConfiguration;

Sample main class using dynamic configuration: https://github.com/UnifiedViews/Plugins/blob/master/e-filesDownload/src/main/java/eu/unifiedviews/plugins/extractor/filesdownload/FilesDownload.java

Further, the config class of the DPU has to be annotated, so that it is clear how the RDF classes and properties are mapped to the config class and attributes of the config class.For details, refer to the sample config annotated: https://github.com/UnifiedViews/Plugins/blob/master/e-filesDownload/src/main/java/eu/unifiedviews/plugins/extractor/filesdownload/FilesDownloadConfig_V1.java

The RDF configuration e-filesDownload supports: https://github.com/UnifiedViews/Plugins/blob/97bcdcfc24da88411cbdf61000756a1ab5ec9752/e-filesDownload/doc/About.md