@Override
public void initialize(Configuration conf, Properties tbl) throws SerDeException {
// Get column names and sort order
String columnNameProperty = tbl.getProperty(Constants.LIST_COLUMNS);
String columnTypeProperty = tbl.getProperty(Constants.LIST_COLUMN_TYPES);
if (columnNameProperty.length() == 0) {
columnNames = new ArrayList<String>();
} else {
columnNames = Arrays.asList(columnNameProperty.split(","));
}
if (columnTypeProperty.length() == 0) {
columnTypes = new ArrayList<TypeInfo>();
} else {
columnTypes = TypeInfoUtils.getTypeInfosFromTypeString(columnTypeProperty);
}
assert (columnNames.size() == columnTypes.size());
// Create row related objects
rowTypeInfo = TypeInfoFactory.getStructTypeInfo(columnNames, columnTypes);
rowObjectInspector =
(StructObjectInspector)
TypeInfoUtils.getStandardWritableObjectInspectorFromTypeInfo(rowTypeInfo);
row = new ArrayList<Object>(columnNames.size());
for (int i = 0; i < columnNames.size(); i++) {
row.add(null);
}
// Get the sort order
String columnSortOrder = tbl.getProperty(Constants.SERIALIZATION_SORT_ORDER);
columnSortOrderIsDesc = new boolean[columnNames.size()];
for (int i = 0; i < columnSortOrderIsDesc.length; i++) {
columnSortOrderIsDesc[i] = (columnSortOrder != null && columnSortOrder.charAt(i) == '-');
}
}
static StandardStructObjectInspector structObjectInspector(Properties tableProperties) {
// extract column info - don't use Hive constants as they were renamed in 0.9 breaking
// compatibility
// the column names are saved as the given inspector to #serialize doesn't preserves them (maybe
// because it's an external table)
// use the class since StructType requires it ...
List<String> columnNames =
StringUtils.tokenize(tableProperties.getProperty(HiveConstants.COLUMNS), ",");
List<TypeInfo> colTypes =
TypeInfoUtils.getTypeInfosFromTypeString(
tableProperties.getProperty(HiveConstants.COLUMNS_TYPES));
// create a standard writable Object Inspector - used later on by serialization/deserialization
List<ObjectInspector> inspectors = new ArrayList<ObjectInspector>();
for (TypeInfo typeInfo : colTypes) {
inspectors.add(TypeInfoUtils.getStandardWritableObjectInspectorFromTypeInfo(typeInfo));
}
return ObjectInspectorFactory.getStandardStructObjectInspector(columnNames, inspectors);
}
public ObjectInspector getWritableObjectInspector() {
return TypeInfoUtils.getStandardWritableObjectInspectorFromTypeInfo(typeInfo);
}
