findAllByOrderByGpaDesc() {
37 | return studentRepository.findAllByOrderByGpaDesc();
38 | }
39 |
40 | @Override
41 | public Student saveOrUpdateStudent(Student student) {
42 | return studentRepository.save(student);
43 | }
44 |
45 | @Override
46 | public void deleteStudentById(String id) {
47 | studentRepository.deleteById(id);
48 | }
49 | }
50 |
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/src/main/java/com/student/information/system/util/ObjectMapperUtils.java:
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1 | package com.student.information.system.util;
2 |
3 | import org.modelmapper.ModelMapper;
4 | import org.modelmapper.convention.MatchingStrategies;
5 |
6 | import java.util.Collection;
7 | import java.util.List;
8 | import java.util.stream.Collectors;
9 |
10 | /**
11 | * @author ragcrix
12 | */
13 | public class ObjectMapperUtils {
14 |
15 | private static ModelMapper modelMapper;
16 |
17 | /**
18 | * Model mapper property setting are specified in the following block.
19 | * Default property matching strategy is set to Strict see {@link MatchingStrategies}
20 | * Custom mappings are added using {@link ModelMapper#addMappings(PropertyMap)}
21 | */
22 | static {
23 | modelMapper = new ModelMapper();
24 | modelMapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STRICT);
25 | }
26 |
27 | /**
28 | * Hide from public usage.
29 | */
30 | private ObjectMapperUtils() {
31 | }
32 |
33 | /**
34 | * Note: outClass object must have default constructor with no arguments
35 | *
36 | * @param type of result object.
37 | * @param type of source object to map from.
38 | * @param entity entity that needs to be mapped.
39 | * @param outClass class of result object.
40 | * @return new object of outClass type.
41 | */
42 | public static D map(final T entity, Class outClass) {
43 | return modelMapper.map(entity, outClass);
44 | }
45 |
46 | /**
47 | * Note: outClass object must have default constructor with no arguments
48 | *
49 | * @param entityList list of entities that needs to be mapped
50 | * @param outCLass class of result list element
51 | * @param type of objects in result list
52 | * @param type of entity in entityList
53 | * @return list of mapped object with