@Override
@SuppressWarnings("unchecked")
public <T> T fromString(String content, Class<T> classOfT) {
if (!classOfT.isArray()) {
if (Collection.class.isAssignableFrom(classOfT)) {
// Collections are NOT supported for deserialization from CSV
throw new RuntimeException(
"Collection types are not supported. Please specify an array[] type.");
}
throw new RuntimeException(
String.format("Array[] types are required. Please specify %s[]", classOfT.getName()));
}
Class<?> objectType = classOfT.getComponentType();
int currentLine = 0;
try (CSVParser parser = new CSVParser(new StringReader(content), getCSVFormat().withHeader())) {
Set<String> columns = parser.getHeaderMap().keySet();
Map<String, Field> fieldMap = getFieldMap(objectType);
Constructor<?> objectConstructor;
try {
objectConstructor = objectType.getConstructor();
} catch (NoSuchMethodException e) {
throw new RuntimeException("A default constructor is required for " + objectType.getName());
}
List objects = new ArrayList<>();
for (CSVRecord record : parser) {
currentLine++;
Object o = objectConstructor.newInstance();
for (String column : columns) {
Field field = fieldMap.get(caseSensitiveFieldNames ? column : column.toLowerCase());
String value = record.get(column);
Object object = objectFromString(value, field.getType());
field.set(o, object);
}
objects.add(o);
}
Object array = Array.newInstance(objectType, objects.size());
for (int i = 0; i < objects.size(); i++) {
Array.set(array, i, objects.get(i));
}
return (T) array;
} catch (Exception e) {
throw new RuntimeException("Failed to parse CSV near line #" + currentLine, e);
}
}
