[jboss-jira] [JBoss JIRA] Created: (JBRULES-2784) Use java-style annotations for metadata

[Davide Sottara (JIRA)]

Use java-style annotations for metadata 
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                 Key: JBRULES-2784
                 URL: https://jira.jboss.org/browse/JBRULES-2784
             Project: Drools
          Issue Type: Feature Request
      Security Level: Public (Everyone can see)
          Components: drools-compiler
    Affects Versions: 5.2.0.M1
            Reporter: Davide Sottara
            Assignee: Mark Proctor
            Priority: Trivial
             Fix For: 5.2.0.M1


Drools Metadata, allowed in rules and bean declarations, are conceptually similar to java annotations, but the actual structure is different: Drools is free-form, while Java uses (optional) key - element pairs:

Drools : @attr( <free text here> )
Java : @attr( key1 = value1, key2 ... )

I suggest the use of Java-like annotations in place of free-form meta-attributes.

Compatibility with official metadata (e.g. event definition) will be guaranteed.
Could break compatibility if a user defined and used their own metadata in the code, as some constructs like @author(john doe) will no longer be accepted, even if @author("john doe"), @author(john, doe) or @author(name="john doe") will.

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