[jira] [Created] (SLING-4454) Contradicting information about service.ranking in UseProvider and JavaUseProvider

["Konrad Windszus (JIRA)" <ji...@apache.org>]

Konrad Windszus created SLING-4454:
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             Summary: Contradicting information about service.ranking in UseProvider and JavaUseProvider
                 Key: SLING-4454
                 URL: https://issues.apache.org/jira/browse/SLING-4454
             Project: Sling
          Issue Type: Bug
          Components: Scripting
    Affects Versions: Scripting Sightly Engine 1.0.0
            Reporter: Konrad Windszus


The {{org.apache.sling.scripting.sightly.use.UseProvider}} states in the javadoc:

{code}
{@code UseProvider} services are ranked according to the OSGi service
 * registration propertiy {@code service.ranking} which is an integer value.
 * {@code UseProvider} servies with lower ranking values are tried before
 * services with higher ranking values. The default value for the ranking if the
 * property is missing is zero.
{code}

All implementations like {{org.apache.sling.scripting.sightly.impl.engine.extension.use.JavaUseProvider}} and sibling classes state
{code}
@Properties({
        @Property(
                name = Constants.SERVICE_RANKING,
                label = "Service Ranking",
                description = "The Service Ranking value acts as the priority with which this Use Provider is queried to return an " +
                        "Use-object. A higher value represents a higher priority.",
                intValue = 90,
                propertyPrivate = false
        )
})
{code}

So what is true here? Are UseProvider with lower rankings queried first? What happens if they return a result.
Please clarify the javadoc here.



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