[jira] [Created] (SLING-9620) ResourceMapperImpl.getAllMappings does not respect multi-valued sling:alias

["Angela Schreiber (Jira)" <ji...@apache.org>]

Angela Schreiber created SLING-9620:
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             Summary: ResourceMapperImpl.getAllMappings does not respect multi-valued sling:alias
                 Key: SLING-9620
                 URL: https://issues.apache.org/jira/browse/SLING-9620
             Project: Sling
          Issue Type: Bug
          Components: ResourceResolver
    Affects Versions: Resource Resolver 1.6.16
            Reporter: Angela Schreiber


while investigating an issue involving {{sling:alias}}, i ended up manually adding the property using JCR API calls. this involved first adding the {{sling:ResourceAlias}} and i noticed that {{sling:alias}} can be both single or multi-valued according to the node type definition:

{code}
/ Mixin node type to enable setting an alias on a resource
[sling:ResourceAlias]
    mixin
  
    // alias name(s) for the node (single or multi-value)
  - sling:alias (string)
  - sling:alias (string) multiple
{code}

when setting multiple values for the {{sling:alias}} property, i found that {{ResourceMapper.getAllMappings}} only returns the first alias.

looking at the implementation in {{ResourceMapperImpl.loadAliasIfApplicable}}, it seems that line 216 ({{String alias = ResourceResolverControl.getProperty(current, ResourceResolverImpl.PROP_ALIAS);}}), is the culprit as call will in any case just return a single string (it calls {{getProperty(res, propName, String.class)}}).

as a consequence consumers of the {{ResourceMapper.getAllMappings}} method will not get a complete list of all aliases available.



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