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https://issues.apache.org/jira/browse/ISIS-1484?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dan Haywood updated ISIS-1484:
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Fix Version/s: (was: 1.16.0)
1.18.0
> Extend @Parameter annotation to provide a class to obtain the default for a
> parameter
> -------------------------------------------------------------------------------------
>
> Key: ISIS-1484
> URL: https://issues.apache.org/jira/browse/ISIS-1484
> Project: Isis
> Issue Type: New Feature
> Components: Core
> Affects Versions: 1.13.0
> Reporter: Dan Haywood
> Priority: Minor
> Fix For: 1.18.0
>
>
> eg:
> {code}
> public void updateName(
> @Parameter(defaultFrom=ParameterDefaultFromProperty.class
> @ParameterLayout(named = "New name")
> final String name) {
> setName(newName);
> }
> {code}
> where (part of the applib):
> {code}
> public interface ParameterDefaulter {
> Object defaultFor(Object domainObject, String actionName, String
> parameterName);
> }
> {code}
> and the applib also provides a default implementation:
> {code}
> public class ParameterDefaultFromProperty implements ParametedDefaulter { ...
> }
> {code}
> that uses an injected service (from core.runtime) to look up the parameter
> value from the corresponding property of the object.
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