static FieldAlias alias(Settings settings) {
Map<String, String> aliasMap =
SettingsUtils.aliases(settings.getProperty(HiveConstants.MAPPING_NAMES));
// add default aliases for serialization (_colX -> mapping name)
Map<String, String> columnMap = columnMap(settings);
for (Entry<String, String> entry : columnMap.entrySet()) {
String columnName = entry.getKey();
String columnIndex = entry.getValue();
if (!aliasMap.isEmpty()) {
String alias = aliasMap.get(columnName);
if (alias != null) {
columnName = alias;
}
}
aliasMap.put(columnIndex, columnName);
}
return new FieldAlias(aliasMap);
}
static FieldAlias alias(Settings settings) {
return new FieldAlias(SettingsUtils.aliases(settings.getProperty(MAPPING_NAMES), false), false);
}