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
}
	
	private void resetCachedMetadata()
	{
		String methodName = "resetCachedMetaData";
		sm_logger.entering( sm_className, methodName );
		
		resetCurrentMetaData();
		
		if( m_namedCurrentResultSets != null )
			m_namedCurrentResultSets.clear();
		
		if( m_namedCurrentResultClasses != null )
			m_namedCurrentResultClasses.clear();
		
		sm_logger.exiting( sm_className, methodName );
	}
	/**
	 * Adds a <code>ColumnHint</code> for this statement to map design time 
	 * column projections with runtime result set metadata.
	 * @param columnHint	a <code>ColumnHint</code> instance.
	 * @throws DataException	if data source error occurs.
	 */
	public void addColumnHint( ColumnHint columnHint ) throws DataException
	{
		String methodName = "addColumnHint";
		sm_logger.entering( sm_className, methodName, columnHint );
		
		if( columnHint != null )
		{