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From "Tobias Barth (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SLING-7483) Performance: JackrabbitSession#getItemOrNull still leads to Exception
Date Thu, 08 Feb 2018 14:47:00 GMT
Tobias Barth created SLING-7483:
-----------------------------------

             Summary: Performance: JackrabbitSession#getItemOrNull still leads to Exception
                 Key: SLING-7483
                 URL: https://issues.apache.org/jira/browse/SLING-7483
             Project: Sling
          Issue Type: Improvement
          Components: JCR, ResourceResolver
    Affects Versions: Resource Resolver 1.4.16
         Environment: Windows 7 64 bit, Java 1.8.131
            Reporter: Tobias Barth


In SLING-4585, it was planned to make use of the method "JackrabbitSession#getItemOrNull",
so that no Exception is thrown when a non existing Resource is looked up. Now, With Sling
Resource Resolver 1.4.16 and Jackrabbit OAK 1.4.13, I get the following stacktrace:
{noformat}
at java.lang.Throwable.fillInStackTrace(Native Method)
at java.lang.Throwable.fillInStackTrace(Throwable.java:783)
- locked <0x7ce7422f> (a javax.jcr.RepositoryException)
at java.lang.Throwable.<init>(Throwable.java:265)
at java.lang.Exception.<init>(Exception.java:66)
at javax.jcr.RepositoryException.<init>(RepositoryException.java:28)
at org.apache.jackrabbit.oak.jcr.session.SessionContext.getOakPathOrThrow(SessionContext.java:359)
at org.apache.jackrabbit.oak.jcr.session.SessionImpl.getOakPathOrThrow(SessionImpl.java:149)
at org.apache.jackrabbit.oak.jcr.session.SessionImpl.access$100(SessionImpl.java:81)
at org.apache.jackrabbit.oak.jcr.session.SessionImpl$3.performNullable(SessionImpl.java:228)
at org.apache.jackrabbit.oak.jcr.session.SessionImpl$3.performNullable(SessionImpl.java:225)
at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.performNullable(SessionDelegate.java:243)
at org.apache.jackrabbit.oak.jcr.session.SessionImpl.getItemOrNull(SessionImpl.java:225)
at sun.reflect.GeneratedMethodAccessor35.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.sling.jcr.base.SessionProxyHandler$SessionProxyInvocationHandler.invoke(SessionProxyHandler.java:116)
at com.sun.proxy.$Proxy7.getItemOrNull(Unknown Source)
at org.apache.sling.jcr.resource.internal.helper.jcr.JcrItemResourceFactory.getItemOrNull(JcrItemResourceFactory.java:184)
at org.apache.sling.jcr.resource.internal.helper.jcr.JcrItemResourceFactory.createResource(JcrItemResourceFactory.java:96)
at org.apache.sling.jcr.resource.internal.helper.jcr.JcrResourceProvider.getResource(JcrResourceProvider.java:283)
at org.apache.sling.resourceresolver.impl.providers.stateful.AuthenticatedResourceProvider.getResource(AuthenticatedResourceProvider.java:135)
at org.apache.sling.resourceresolver.impl.helper.ResourceResolverControl.getResource(ResourceResolverControl.java:218)
at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.getAbsoluteResourceInternal(ResourceResolverImpl.java:1067)
at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.resolveInternal(ResourceResolverImpl.java:899)
at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.resolveInternal(ResourceResolverImpl.java:371)
at org.apache.sling.resourceresolver.impl.ResourceResolverImpl.resolve(ResourceResolverImpl.java:267){noformat}
Seems like the JCR implementation still throws Exceptions on non existing paths. What is going
wrong there?



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