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
* Sets the names of all projected columns for the specified result set. If 
	 * this method is not called, then all columns in the specified result set 
	 * metadata are projected.  The specified projected names can be either a 
	 * column name or column alias.
	 * @param resultSetName	the name of the result set.
	 * @param projectedNames	the projected column names.
	 * @throws DataException	if data source error occurs.
	 */
	public void setColumnsProjection( String resultSetName, String[] projectedNames ) 
		throws DataException
	{
		String methodName = "setColumnsProjection";
		if( sm_logger.isLoggingEnterExitLevel() )
			sm_logger.entering( sm_className, methodName, 
								new Object[] { resultSetName, projectedNames } );
		
		checkNamedResultsSupport();
		resetCurrentMetaData( resultSetName );
		getProjectedColumns( resultSetName ).setProjectedNames( projectedNames );
		
		sm_logger.exiting( sm_className, methodName );
	}
	
	/**
	 * Declares a new custom column for the corresponding 
	 * <code>IResultClass</code>.
	 * @param columnName	the custom column name.
	 * @param columnType	the custom column type.
	 * @throws DataException	if data source error occurs.
	 */