Problem with protected field computed as a reference for an unannotated
implementation
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Key: TUSCANY-2266
URL: https://issues.apache.org/jira/browse/TUSCANY-2266
Project: Tuscany
Issue Type: Bug
Components: Java SCA Java Implementation Extension
Affects Versions: Java-SCA-1.2
Reporter: Vamsavardhana Reddy
Looks like an unannotated protected field computed as reference in an
unannotated java implementation can not get its value injected. The following
is a query posted to the dev-list:
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PART-1:
The Java Annotations&APIs specification Lines 1407, 1408, 1409, 1410 ...
* References may also be injected via public setter methods even when the
* "@Reference" annotation is not present. However, the "@Reference"
* annotation must be used in order to inject a reference onto a non public
* field. In the case where there is no "@Reference" annotation, the name of
* the reference is the same as the name of the field or setter.
This means a reference can not be injected onto a protected field without an
@Reference annotation.
PART-2:
Java Component Implementation Specification - Section 1.2.7 line 358 to 365:
358 1.2.7. Semantics of an Unannotated Implementation
359 The section defines the rules for determining properties and references for
a Java component
360 implementation that does not explicitly declare them using @Reference or
@Property.
361 In the absence of @Property and @Reference annotations, the properties and
references of a class are
362 defined according to the following rules:
363 1. Public setter methods that are not included in any interface specified
by an @Service annotation.
364 2. Protected setter methods
365 3. Public or protected fields unless there is a public or protected setter
method for the same name
This means a protected field could end up as a reference in an unannotated
implementation. But from PART-1 above, a reference can not be injected unless
an @Reference annotation is present on a protected field!!! How will a
protected field computed as a reference for an unannotated implementation get
its value set?
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The issue has been raised in OASIS SCA Java TC (See
http://www.oasis-open.org/apps/org/workgroup/sca-j/email/archives/200804/msg00041.html).
This JIRA is created to track progress on resolution in Tuscany once the spec
issue is resolved in OASIS TC.
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