Andrei Dulvac created SLING-6978:
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Summary: [HApi] NPE if type is fetched from cache before the end
of initialization
Key: SLING-6978
URL: https://issues.apache.org/jira/browse/SLING-6978
Project: Sling
Issue Type: Bug
Components: HApi
Affects Versions: HApi 1.0.0
Reporter: Andrei Dulvac
Fix For: HApi 1.0.2
An NPE can occur when accessing the type properties from a type before it was
fully initialized.
{code}
org.apache.sling.hapi.sightly.HApiUse Failed to activate Use class
java.lang.NullPointerException: null
at java.util.HashMap.putMapEntries(HashMap.java:500)
at java.util.HashMap.putAll(HashMap.java:784)
at
org.apache.sling.hapi.impl.HApiTypeImpl.getAllProperties(HApiTypeImpl.java:141)
at
org.apache.sling.hapi.impl.MicrodataAttributeHelperImpl.itemtypeMap(MicrodataAttributeHelperImpl.java:63)
at org.apache.sling.hapi.sightly.HApiUse.activate(HApiUse.java:81)
at org.apache.sling.hapi.sightly.HApiUse.init(HApiUse.java:68)
at
org.apache.sling.scripting.sightly.impl.engine.extension.use.JavaUseProvider.provide(JavaUseProvider.java:122)
at
org.apache.sling.scripting.sightly.impl.engine.extension.use.UseRuntimeExtension.call(UseRuntimeExtension.java:72)
at
org.apache.sling.scripting.sightly.impl.engine.runtime.RenderContextImpl.call(RenderContextImpl.java:75)
{code}
The type is inserted in the cache too soon:
https://github.com/apache/sling/blob/trunk/contrib/extensions/hapi/core/src/main/java/org/apache/sling/hapi/impl/HApiUtilImpl.java#L224
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