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https://issues.apache.org/jira/browse/TAPESTRY-1965?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Davor Hrg reopened TAPESTRY-1965:
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I'm reopening this so docs can be more specific on this and an example added.
not much effort, but to help confused folks like me :)
When looking for symbols, there is only one mention of @inject I could find (in
javadoc vor @Value).
If you look at
http://tapestry.formos.com/nightly/tapestry5/tapestry-ioc/provider.html
the @Value is used without @Inject
on the symbols docs page
http://tapestry.apache.org/tapestry5/tapestry-ioc/symbols.html
@Symbol is not even mentioned, just the expansions ${sth}
Javadoc for @Symbol says:
Used to inject a symbol value, via a symbol name. This is used much like [EMAIL
PROTECTED] Value}
and finaly whn I look at @Value javadoc:
Used in conjunction with [EMAIL PROTECTED] Inject} to inject a literal value,
rather than a service
.. hoep you can see my confusion with this ...
the docs could be fixed to make this more clear.
P.S.
after writing this... i looked back at th example on page
http://tapestry.formos.com/nightly/tapestry5/tapestry-ioc/provider.html
and changed my test to:
@Value("${"+InternalConstants.TAPESTRY_APP_NAME_SYMBOL+"}") String appName,
which is then done right by the docs, and problem is the same as with
@Symbol (both without @Inject)
> @Symbol annotation returns sericeId when used without @Inject
> -------------------------------------------------------------
>
> Key: TAPESTRY-1965
> URL: https://issues.apache.org/jira/browse/TAPESTRY-1965
> Project: Tapestry
> Issue Type: Improvement
> Components: Documentation
> Affects Versions: 5.0.7
> Reporter: Davor Hrg
> Assignee: Howard M. Lewis Ship
> Priority: Minor
>
> I have a simple decorator that uses tapestry app-name...
> I tested this problem in three module methods:
> contributeApplicationDefaults
> buildTimingFilter
> decorateComponentMessagesSource
> using:
> @Symbol(InternalConstants.TAPESTRY_APP_NAME_SYMBOL)
> if @Symbol is used with @Inject
> the results are ok:
> contributeApplicationDefaults.APPNAME app
> buildTimingFilter.APPNAME app
> decorateComponentMessagesSource.APPNAME app
> if used without @Inject contrib method has ok result
> contributeApplicationDefaults.APPNAME app
> buildTimingFilter.APPNAME TimingFilter
> decorateComponentMessagesSource.APPNAME ComponentMessagesSource
> If @Symbol is not intended to be used without @inject
> Exception should be thrown to avoid problems from unexpected results
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