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author | Adrián Oliva <adrian.oliva@cimat.mx> | 2023-05-29 00:41:26 -0600 |
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committer | Adrián Oliva <adrian.oliva@cimat.mx> | 2023-05-29 00:41:26 -0600 |
commit | 23c9a70a472d5dcc9e0810d9a1b645ecd24554ff (patch) | |
tree | 22b4397e54ed3785d7b8eb14cedf12ca7df5ce36 /src/main/java | |
parent | e95dfec7ccb5a09e9278b7efbade15d5bb3267e0 (diff) | |
download | ToDo-App-BE-23c9a70a472d5dcc9e0810d9a1b645ecd24554ff.tar.gz ToDo-App-BE-23c9a70a472d5dcc9e0810d9a1b645ecd24554ff.zip |
First instance for pagination.
Setting filters and sorters and saving them on a list. Then the list can
be paginated and returned.
Diffstat (limited to 'src/main/java')
-rw-r--r-- | src/main/java/com/encora/Main.java | 62 | ||||
-rw-r--r-- | src/main/java/com/encora/ToDosRepository.java | 13 |
2 files changed, 75 insertions, 0 deletions
diff --git a/src/main/java/com/encora/Main.java b/src/main/java/com/encora/Main.java index a8d86ba..5aaede6 100644 --- a/src/main/java/com/encora/Main.java +++ b/src/main/java/com/encora/Main.java @@ -6,6 +6,7 @@ import org.springframework.data.domain.Sort; import org.springframework.http.HttpStatus; import org.springframework.web.bind.annotation.*; +import java.util.Collections; import java.util.Date; import java.util.List; import java.util.Objects; @@ -174,4 +175,65 @@ public class Main { public Integer giveMeLastID() { return toDosRepository.lastId; } + + + // Set filters and sorters for our to dos. + record filtersAndSorters ( + toDoFilters filters, + SortingsFields sortField, + SortingOrders sortOrder + ) { + + } + @CrossOrigin(origins=allowed_origin) + @PostMapping("/todos/setFiltSort") + @ResponseStatus(value=HttpStatus.OK) + public void setFiltersAndSorters(@RequestBody filtersAndSorters filAndSor) throws Exception { + // Sorting method. + Sort sortingMethod = Sort.by(String.valueOf(filAndSor.sortField())); + if (Objects.equals(String.valueOf(filAndSor.sortOrder()), "DESC")) { + sortingMethod = sortingMethod.descending(); + } + + // Filter to dos and then sort them. + toDosRepository.refreshFilteredToDos( + sortingMethod, + filAndSor.filters().name(), + filAndSor.filters().priority(), + filAndSor.filters().done() + ); + } + + + // Return our todos filtered, sorted AND paginated. + @CrossOrigin(origins=allowed_origin) + @GetMapping("/todos/filtSort/{page}") + @ResponseStatus(value=HttpStatus.OK) + public List<ToDos> getFilteredToDos(@PathVariable("page") Integer page) { + if(page <= 0) { + throw new IllegalArgumentException("invalid page: " + page); + } + + final int pageSize = 10; + List<ToDos> myToDos = toDosRepository.filteredToDos; + + int fromIndex = (page - 1) * pageSize; + if (myToDos.size() <= fromIndex) { + return Collections.emptyList(); + } + + // toIndex exclusive + return myToDos.subList(fromIndex, Math.min(fromIndex + pageSize, myToDos.size())); + } + + + // Return how many pages after filter and sorting. + @CrossOrigin(origins=allowed_origin) + @GetMapping("/todos/filtSort/pages") + @ResponseStatus(value=HttpStatus.OK) + public Integer getNumberOfPages(@RequestBody filtersAndSorters filAndSor) { + // Number of items divided by page size. + final int pageSize = 10; + return (int) Math.ceil((double) toDosRepository.filteredToDos.size() / pageSize); + } } diff --git a/src/main/java/com/encora/ToDosRepository.java b/src/main/java/com/encora/ToDosRepository.java index 8d09d7e..a4c9a10 100644 --- a/src/main/java/com/encora/ToDosRepository.java +++ b/src/main/java/com/encora/ToDosRepository.java @@ -184,6 +184,19 @@ public class ToDosRepository implements JpaRepository<ToDos, Integer> { return comparator; } + + // Filter and then sort all of our to dos. + public void refreshFilteredToDos(Sort sort, String name, String priority, String done) throws Exception { + this.filteredToDos = this.findAllWithFilter(name, priority, done); + + try { + Comparator<ToDos> comparator = this.getToDoComparator(sort); + Collections.sort(this.filteredToDos, comparator); + } catch (Exception e) { + throw new RuntimeException(e); + } + } + /* * N O T Y E T D E F I N E D . */ |