Dan Haywood created ISIS-1056:
---------------------------------
Summary: Support user-defined annotations (as per Spring and
JSR-303 etc).
Key: ISIS-1056
URL: https://issues.apache.org/jira/browse/ISIS-1056
Project: Isis
Issue Type: New Feature
Components: Core
Affects Versions: core-1.8.0
Reporter: Dan Haywood
Assignee: Dan Haywood
Fix For: core-2.0.0
eg, instead of:
@Action(semantics=SemanticsOf.SAFE)
@ActionLayout(contributed=Contributed.AS_ASSOCIATION)
@CollectionLayout(render=RenderType.EAGERLY)
public List<Foo> someFoos() { ... }
we could allow custom annotations like this to be defined:
@Action(semantics=SemanticsOf.SAFE)
@ActionLayout(contributed=Contributed.AS_ASSOCIATION)
@CollectionLayout(render=RenderType.EAGERLY)
public @interface ContributedCollection {
}
which would then allow:
@ContributedCollection
public List<Foo> someFoos() { ... }
~~~~
This might also be a good way to support value types, eg by introducing a new
ValueObject and ValueObjectLayout annotations:
@ValueObject (
mustSatisfy=MoneySpec.class,
appliesTo={BigDecimal.class}
)
@ValueObjectLayout(
named="Money"
)
public @interface Money {
}
and then:
public void deposit(@Money BigDecimal bd) { ... }
Behind the scenes, Isis would just be copying facets from the
ObjectSpecification that represents the @Money annotation onto the parameter or
property feature..
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