[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5273) RowCountProjection long to int cast exception

[Pamir Erdem (JIRA)]

RowCountProjection long to int cast exception
---------------------------------------------

                 Key: HHH-5273
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5273
             Project: Hibernate Core
          Issue Type: Bug
    Affects Versions: 3.5.2
         Environment: hibernate-core 3.5.2
            Reporter: Pamir Erdem


After we upgraded our hibernate.jar from 3.3.2 to 3.5.2 the methods which executes rowcount functions have started to throw long to cast exception. 

>From the source code of hibernate, it is clear that for the features which will be implemented in 3.6
some implementations are changed.
#http://opensource.atlassian.com/projects/hibernate/browse/HHH-5138

In 3.3.2 
{code:title=RowCountProjection.java|borderStyle=solid}
	public Type[] getTypes(Criteria criteria, CriteriaQuery criteriaQuery) 
	throws HibernateException {
		return new Type[] { Hibernate.INTEGER };
	}
{code}


In 3.5.2 
{code:title=RowCountProjection.java|borderStyle=solid}
		return new Type[] {
				getFunction( criteriaQuery ).getReturnType( null, criteriaQuery.getFactory() )
		};

{code}

But the definitions of the rowcount functions in both versions in same in Dialect.java

{code}
	static {
		STANDARD_AGGREGATE_FUNCTIONS.put(
				"count",
				new StandardSQLFunction("count") {
					public Type getReturnType(Type columnType, Mapping mapping) {
						return Hibernate.LONG;
					}
					public String render(List args, SessionFactoryImplementor factory) {
						if ( args.size() > 1 ) {
							if ( "distinct".equalsIgnoreCase( args.get( 0 ).toString() ) ) {
								return renderCountDistinct( args );
							}
						}
						return super.render( args, factory );
					}
{code}


By this minor change in 3.5.2 all the project tests which executes count sql function are failing by throwing class cast exception

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