columnType = (String)columnSB.getAttribute(GeoEngineConstants.COLUMN_TYPE_ATTRIBUTE);
logger.debug("Column [" + i + "] name [" + columnType + "]");
Assert.assertNotNull(columnName, "Attribute [" + GeoEngineConstants.COLUMN_TYPE_ATTRIBUTE + "] of tag [" + GeoEngineConstants.COLUMN_TAG + "] cannot be null");
metaData.addColumn(columnName);
metaData.setColumnProperty(columnName, "column_id", columnName);
metaData.setColumnProperty(columnName, "type", columnType);
if( columnType.equalsIgnoreCase("geoid")) {
String hierarchyName = (String)columnSB.getAttribute(GeoEngineConstants.COLUMN_HIERARCHY_REF_ATTRIBUTE);