Eric Norman created SLING-10677:
-----------------------------------
Summary: add support for using an enum class via the Java Use-API
Key: SLING-10677
URL: https://issues.apache.org/jira/browse/SLING-10677
Project: Sling
Issue Type: Improvement
Reporter: Eric Norman
Assignee: Eric Norman
Fix For: Scripting HTL Engine 1.4.10-1.4.0
For a use case where you need access to an enum value in your ui script for
some reason, it would be nice to be able to "data-sly-use" your enum class with
something like this:
{code:java}
<sly data-sly-use.myEnum="org.hello.MyEnum"></sly>
{code}
... and then later on you can reference the enum values with an expression that
looks something like this:
{code:java}
<p>
Enum value by name: ${myEnum.SOMEVALUE}
</p>
<p>
Enum value by ordinal: ${myEnum[1]}
</p>
<p>
Constant static field within the enum: ${myEnum.SOME_NON_VALUE_CONSTANT_FIELD}
</p>
<p data-sly-repeat.value="${myEnum.values}">
Enum value[${value.ordinal}] from static method call: ${value}
</p>
{code}
Since the enum can not have a default constructor, special handling in
JavaUseProvider would be required to return the enum class itself instead of
trying to instantiate a new instance of the class.
NOTE: A companion fix will also be required in
org.apache.sling.scripting.sightly.render.ObjectModel#resolveProperty to deal
with the target object being an Enum class instead of a POJO object in order
for the expressions to resolve as expected.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
