Richard Eckart de Castilho created UIMA-2801:
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Summary: Allow multi-valued external resources
Key: UIMA-2801
URL: https://issues.apache.org/jira/browse/UIMA-2801
Project: UIMA
Issue Type: Improvement
Components: uimaFIT
Reporter: Richard Eckart de Castilho
Assignee: Richard Eckart de Castilho
Fix For: 2.1.0uimaFIT
Currently, there can only be one external resource per key, e.g.:
{code}
final static String MODEL_KEY = "Model";
@ExternalResource(key = MODEL_KEY)
private SharedModel model;
---
AnalysisEngineDescription aed1 = createPrimitiveDescription(Annotator.class,
Annotator.MODEL_KEY, extDesc);
{code}
There are cases where we want to pass a multiple external resources at a time,
e.g. multiple models when can be used jointly by a component. It is
inconvenient to have the component declare one key per model, because we do not
know their number in advance. Adding support for adding multi-valued external
resources in uimaj-core looks like a major change, as the XML descriptors would
need to be extended. At the level of uimaFIT, it should be rather easy to
implement something like this:
{code}
final static String MODEL_KEY = "Model";
@ExternalResource(key = MODEL_KEY)
private List<SharedModel> model;
---
AnalysisEngineDescription aed1 = createPrimitiveDescription(Annotator.class,
Annotator.MODEL_KEY, asList(extDesc1, extDesc2, extDesc3));
{code}
uimaFIT may implicitly bind the three values to "Model#1", "Model#2", and
"Model#3". When configuring a component, it can check that the external
resource parameter field is multi-valued and look for the keys with the "#X"
postfixes.
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