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
m_currentResultClass = null;
		m_currentResultSet = null;
		
		sm_logger.exiting( sm_className, methodName );
	}
	
	private void resetCurrentMetaData( String resultSetName )
	{
		String methodName = "resetCurrentMetaData";
		sm_logger.entering( sm_className, methodName, resultSetName );
		
		getNamedCurrentResultClasses().remove( resultSetName );
		getNamedCurrentResultSets().remove( resultSetName );
		
		sm_logger.exiting( sm_className, methodName );
	}
	
	private Hashtable getNamedProjectedColumns()
	{
		if( m_namedProjectedColumns == null )
			m_namedProjectedColumns = new Hashtable();
		
		return m_namedProjectedColumns;
	}
	
	private Hashtable getNamedCurrentResultClasses()
	{
		if( m_namedCurrentResultClasses == null )
			m_namedCurrentResultClasses = new Hashtable();