Bug 152443 Support boolean type in data set
Support boolean type in data set. It'll cause some data transform issue with absence of boolean type.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/odaconsumer/PreparedStatement.java
return m_namedCurrentResultClasses;
	}
	
	private Hashtable getNamedCurrentResultSets()
	{
		if( m_namedCurrentResultSets == null )
			m_namedCurrentResultSets = new Hashtable();
		
		return m_namedCurrentResultSets;
	}
	
	private IQuery getStatement( )
	{
		return m_statement;
	}
	
	private IAdvancedQuery getAdvancedStatement()
	{
	    assert ( isAdvancedQuery() );
	    return (IAdvancedQuery) m_statement;
	}
	
	private boolean isAdvancedQuery( )
	{
		return ( m_statement instanceof IAdvancedQuery );
	}
	
	private boolean supportsNamedResults() throws DataException
	{