[jira] [Created] (SLING-5766) Sightly: Automatically clear all compiled scripts when the Sightly Engine Bundle was updated

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

Konrad Windszus created SLING-5766:
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             Summary: Sightly: Automatically clear all compiled scripts when the Sightly Engine Bundle was updated
                 Key: SLING-5766
                 URL: https://issues.apache.org/jira/browse/SLING-5766
             Project: Sling
          Issue Type: Improvement
          Components: Scripting
    Affects Versions: Scripting Sightly Engine 1.0.12
            Reporter: Konrad Windszus


After upgrading to a newer version of the {{Sightly Scripting}} bundle it may be that the compiled servlets are no longer working. This is always the case whenever the Sightly Servlet contains calls to methods in the {{Sightly Scripting}} bundle whose signature has been changed (in an binary incompatible way)

After I upgraded from 1.0.2 to 1.0.12 I ran into this issue.
The following exception was thrown then
{code}
java.lang.NoSuchMethodError: org.apache.sling.scripting.sightly.impl.engine.runtime.RenderContextImpl.resolveProperty(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
	at apps.daimler.embxp_wholesale.base.components.pages.basepage.SightlyJava_basepage.render(SightlyJava_basepage.java:40)
	at org.apache.sling.scripting.sightly.impl.engine.runtime.RenderUnit.render(RenderUnit.java:54)
	at org.apache.sling.scripting.sightly.impl.engine.SightlyScriptEngine.evaluateScript(SightlyScriptEngine.java:92)
	at org.apache.sling.scripting.sightly.impl.engine.SightlyScriptEngine.eval(SightlyScriptEngine.java:78)
	at org.apache.sling.scripting.core.impl.DefaultSlingScript.call(DefaultSlingScript.java:361)
	at org.apache.sling.scripting.core.impl.DefaultSlingScript.eval(DefaultSlingScript.java:171)
	at org.apache.sling.scripting.core.impl.DefaultSlingScript.service(DefaultSlingScript.java:463)
	at org.apache.sling.engine.impl.request.RequestData.service(RequestData.java:547)
	at org.apache.sling.engine.impl.filter.SlingComponentFilterChain.render(SlingComponentFilterChain.java:44)
	at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:77)
{code}

Only after manually clearing the compiled servlet's in the filesystem classloaders directory the exception disappeared.

Either that clearing must be done automatically (preferred solution) or at least there must be an easy way to clear the compiled Sightly servlets in that case.



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