[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5195) FilterImpl.validate() throws NullPointerExeption at line 164

[Savochkin Alexander (JIRA)]

FilterImpl.validate() throws NullPointerExeption at line 164
------------------------------------------------------------

                 Key: HHH-5195
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5195
             Project: Hibernate Core
          Issue Type: Bug
          Components: core
    Affects Versions: 3.5.1
         Environment: hibernate-distribution-3.5.1-Final-dist
            Reporter: Savochkin Alexander


After deserialization NPE is thrown at this line

FilterImpl
{code}
line:164
Iterator itr = definition.getParameterNames().iterator();
{code}

the last lines from stack trace are:

{code}
java.lang.NullPointerException
        at org.hibernate.impl.FilterImpl.validate(FilterImpl.java:164)
        at org.hibernate.engine.LoadQueryInfluencers.getEnabledFilters(LoadQueryInfluencers.java:109)
        at org.hibernate.impl.SessionImpl.readObject(SessionImpl.java:2144)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:48)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
        at java.lang.reflect.Method.invoke(Method.java:600)
        at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:986)
        at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1865)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1769)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1345)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:364)
{code}

Looking at SessionImpl class we see:

{code}
line 2143:
Iterator iter = loadQueryInfluencers.getEnabledFilters().values().iterator();
		while ( iter.hasNext() ) {
			( ( FilterImpl ) iter.next() ).afterDeserialize( factory );
		}
{code}

LoadQueryInfluencers:

{code}
line:105
Iterator itr = enabledFilters.values().iterator();
		while ( itr.hasNext() ) {
			final Filter filter = ( Filter ) itr.next();
			filter.validate();
		}

{code}

So, afterDeserialization() on enabled filters method is invoked AFTER getEnabledFilters() method is.
It seems to be the reason why the private TRANSIENT field "definition" of every filter is null at the moment of filter validation!

"definition" field is supposed to be initialized only after validate() is called.





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