[jira] [Created] (STANBOL-1399) Allow target fields for wildcard field mappings

["Rupert Westenthaler (JIRA)" <ji...@apache.org>]

Rupert Westenthaler created STANBOL-1399:
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             Summary: Allow target fields for wildcard field mappings
                 Key: STANBOL-1399
                 URL: https://issues.apache.org/jira/browse/STANBOL-1399
             Project: Stanbol
          Issue Type: Improvement
          Components: Entityhub
    Affects Versions: 0.12.0
            Reporter: Rupert Westenthaler
            Assignee: Rupert Westenthaler
            Priority: Minor
             Fix For: 1.0.0, 0.12.1


Currently FieldMappings the do use a wildcard are not allowed to be mapped to an target field.

The main reason for this is that things like the following example

{code}
    dc:* > dct:*
{code}

that would copy all fields from the dc elements namespace to the dc terms namespace are not implemented.

However copying multiple fields to a single one are already supported but not accepted by the FieldMappings constructor. A possible usage scenario is to collect all references or literal values to create an disambiguation context. See the following listing for an example.

{code}
* | d=entityhub:text > dis:textContext
* | d=entityhub:reference > dis:refContext
{code}

The change is really trivial as one needs only comment the check in the constructor of FieldMapping that explicitly disallows those things.



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