[hibernate-issues] [Hibernate-JIRA] Created: (HSEARCH-21) NPE in SearchFactory while using different threads

[Sylvain Vieujot (JIRA)]

NPE in SearchFactory while using different threads
--------------------------------------------------

         Key: HSEARCH-21
         URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-21
     Project: Hibernate Search
        Type: Bug

  Components: engine  
    Reporter: Sylvain Vieujot


java.lang.NullPointerException
	at org.hibernate.search.SearchFactory.getSearchFactory(SearchFactory.java:120)
	at com.seanergie.persistence.SessionsManager.getSearchFactory(SessionsManager.java:374)
...

The contexts ThreadLocal is missing a get method. it is initialized by the first thread that uses it by the static statement, but for the next Thread it hasn't been initialized,  and so it contexts.get() returns null.

Simple fix : add the get method as follows :

public class SearchFactory {
	private static ThreadLocal<WeakHashMap<Configuration, SearchFactory>> contexts =
			new ThreadLocal<WeakHashMap<Configuration, SearchFactory>>(){
				@Override
				public WeakHashMap<Configuration,SearchFactory> get() {
					return new WeakHashMap<Configuration, SearchFactory>(2);
				}
			};
	static {
		Version.touch();
		contexts.set( new WeakHashMap<Configuration, SearchFactory>(2) );
	}

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