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https://issues.apache.org/jira/browse/SLING-8737?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Radu Cotescu updated SLING-8737:
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Fix Version/s: Servlets Resolver 2.5.8
> Add support for lazily-evaluated bindings
> -----------------------------------------
>
> Key: SLING-8737
> URL: https://issues.apache.org/jira/browse/SLING-8737
> Project: Sling
> Issue Type: New Feature
> Components: Scripting
> Reporter: Radu Cotescu
> Assignee: Radu Cotescu
> Priority: Major
> Fix For: Scripting Core 2.1.0, API 2.21.0, Servlets Resolver 2.5.8
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The {{org.apache.sling.scripting.core}} module provides support for passing a
> {{javax.script.Bindings}} to script engines, through the
> {{org.apache.sling.scripting.core.impl.DefaultSlingScript}} implementation of
> the {{org.apache.sling.api.scripting.SlingScript}} interface .
> {{org.apache.sling.scripting.core.impl.DefaultSlingScript}} relies directly
> on {{javax.script.SimpleBindings}}, which means that the values with which
> the map is populated have to be computed before insertion. In some cases
> these computations are not trivial, however there's no guarantee that the
> values will actually be used.
> In order to optimise the {{Bindings}} usage, given that Java 8 and above
> provide the
> [{{Supplier}}|https://docs.oracle.com/javase/8/docs/api/java/util/function/Supplier.html]
> functional interface, both the {{org.apache.sling.api}} and
> {{org.apache.sling.scripting.core}} modules should bring support for pushing
> {{Suppliers}} into the {{Bindings}} maps, suppliers which would be invoked
> on-demand.
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