Bug 361443 Excel ODA
data/org.eclipse.birt.report.data.oda.excel/src/org/eclipse/birt/report/data/oda/excel/impl/ExcelFileQuery.java
private boolean hasTypeLine;
	
	private String currentTableName;
	
	private Properties connProperties;
	
	
	private ResultSetMetaData resultSetMetaData;
	private ResultSetMetaDataHelper resultSetMetaDataHelper;
	private String worksheetNames;
	private String savedSelectedColInfo;
	private String preparedColumnNames;
	private String[] columnLabels;
	private boolean isInvalidQuery;
	private Map appContext = null;
	public ExcelFileQuery( Properties connProperties ) throws OdaException
	{
		if ( connProperties == null
				||  connProperties.getProperty( ExcelODAConstants.CONN_FILE_URI_PROP ) == null  )
			throw new OdaException( Messages.getString( "common_ARGUMENT_CANNOT_BE_NULL" ) ); 
		this.connProperties = connProperties;
		extractsHasColumnNamesInfo( );
		extractsHasColumnTypeLineInfo( );
	}
	/**
	 *
	 *
	 */
	private void extractsHasColumnNamesInfo() {