feat : implement spring data window pagination #1543
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type: dependency-upgrade
| // Generate next scroll position | ||
| ScrollPosition nextScrollPosition = results.isEmpty() | ||
| ? ScrollPosition.offset() | ||
| : ScrollPosition.of(Map.of("id", results.getLast().getId()), ScrollPosition.Direction.FORWARD); |
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@coderabbitai, how to make Direction dynamic?
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@rajadilipkolli, to make the Direction dynamic, you can determine it based on your current ScrollPosition or pass it as an additional parameter to your method. Here's how you can modify your code:
- Pass
Directionas a Parameter
You can update your method signature to accept a ScrollPosition.Direction parameter:
public Window<Animal> findAll(Specification<Animal> spec, PageRequest pageRequest, ScrollPosition scrollPosition, ScrollPosition.Direction direction) {
// Existing code
// ...
// Generate next scroll position using the dynamic direction
ScrollPosition nextScrollPosition = results.isEmpty()
? ScrollPosition.offset()
: ScrollPosition.of(Map.of("id", results.getLast().getId()), direction);
// ...
}This allows you to specify the direction (FORWARD or BACKWARD) when calling the method.
- Infer
DirectionfromScrollPosition
If you prefer to determine the direction based on the provided ScrollPosition, you can extract it dynamically:
// Determine direction dynamically, defaulting to FORWARD if not specified
ScrollPosition.Direction direction = ScrollPosition.Direction.FORWARD;
if (scrollPosition instanceof KeysetScrollPosition keysetPosition) {
direction = keysetPosition.getDirection();
}
// Generate next scroll position using the dynamic direction
ScrollPosition nextScrollPosition = results.isEmpty()
? ScrollPosition.offset()
: ScrollPosition.of(Map.of("id", results.getLast().getId()), direction);In this approach, you check if the scrollPosition is an instance of KeysetScrollPosition and retrieve the direction using getDirection(). This makes the direction contingent on the current scroll position, allowing for dynamic pagination in both forward and backward directions.
Let me know if you need further assistance or clarification!
WalkthroughThe pull request introduces several significant changes to the project, including updates to the PostgreSQL Docker image version, modifications to the Changes
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Actionable comments posted: 10
🧹 Outside diff range and nitpick comments (25)
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepository.java (1)
9-11: Consider adding Javadoc documentation.Adding documentation would improve maintainability by explaining:
- The purpose of the interface
- The parameters and return value of the
findAllmethod- Example usage
Here's a suggested documentation:
+/** + * Custom repository interface for efficient keyset pagination of Animal entities. + */ public interface CustomAnimalRepository { + /** + * Finds all animals matching the given specification using keyset pagination. + * + * @param spec The specification to filter animals + * @param pageRequest The pagination information + * @param scrollPosition The current position in the result set + * @return A window containing the paginated results + */ Window<Animal> findAll(Specification<Animal> spec, PageRequest pageRequest, ScrollPosition scrollPosition); }jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/model/response/AnimalResponse.java (2)
5-5: LGTM! Consider adding documentation.The record structure is well-designed with appropriate immutability for a response object. The field ordering is logical, with identifier first and audit field last.
Consider adding Javadoc to document the record's purpose and field descriptions:
+/** + * Response record representing an animal entity with its basic attributes and audit information. + * + * @param id Unique identifier of the animal + * @param name Name of the animal + * @param type Type/species of the animal + * @param habitat Natural environment where the animal lives + * @param created Timestamp when the animal record was created + */ public record AnimalResponse(Long id, String name, String type, String habitat, LocalDateTime created) {}
5-5: Consider adding validation annotations.Since this is a response object that will be serialized to JSON, consider adding validation annotations to ensure data consistency, especially for fields that shouldn't be null.
+import jakarta.validation.constraints.NotNull; +import jakarta.validation.constraints.NotBlank; public record AnimalResponse( + @NotNull Long id, + @NotBlank String name, + @NotBlank String type, + @NotBlank String habitat, + @NotNull LocalDateTime created) {}jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/config/JpaAuditConfig.java (1)
6-6: Consider enhancing the configuration documentation.While the current comment explains the proxy requirement, consider adding more detailed documentation about:
- The purpose of JPA auditing in this application
- Which entities will be audited
- What fields will be automatically managed
Example documentation:
-// As JpaAuditing works based on Proxy we shouldn't create configuration as proxyBeans as false +/** + * Enables JPA auditing for automatic management of entity timestamps. + * Note: JPA Auditing works based on Proxy, so proxy beans must remain enabled. + * + * This configuration supports: + * - Automatic population of @CreatedDate in Auditable entities + * - Primarily used by Animal entity for tracking creation timestamps + */jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/entities/Animal.java (2)
59-61: Make setCreated consistent with builder pattern.The
setCreatedmethod breaks the fluent builder pattern used by other setters in the class. Consider making it consistent with the rest of the class.-public void setCreated(LocalDateTime created) { - this.created = created; -} +public Animal setCreated(LocalDateTime created) { + this.created = created; + return this; +}
31-32: Consider adding validation for non-null type field.The
typefield is marked asnullable = falsein the database, but there's no validation at the entity level. Consider adding Bean Validation to ensure consistency.@Column(nullable = false) +@NotNull(message = "Animal type cannot be null") private String type;jpa/keyset-pagination/boot-data-window-pagination/pom.xml (1)
84-89: Consider managing the micrometer dependency version in propertiesWhile adding datasource monitoring is beneficial, the version should be managed in the properties section to maintain consistency and ease updates.
Add this to the properties section:
<properties> + <datasource-micrometer.version>1.0.6</datasource-micrometer.version> </properties>Then update the dependency:
<dependency> <groupId>net.ttddyy.observation</groupId> <artifactId>datasource-micrometer-spring-boot</artifactId> - <version>1.0.6</version> + <version>${datasource-micrometer.version}</version> </dependency>jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/model/request/AnimalRequest.java (1)
5-8: LGTM! Consider adding documentation.The record structure and validation constraints are well-implemented. Consider adding Javadoc to document the purpose of this record and its fields.
+/** + * Request object for animal operations containing essential animal information. + * + * @param name The name of the animal (required) + * @param type The type/species of the animal (required) + * @param habitat The natural environment where the animal lives (optional) + */ public record AnimalRequest( @NotBlank(message = "Name cannot be blank") String name, @NotBlank(message = "Type cannot be blank") String type, String habitat) {}jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/web/controllers/AnimalControllerIT.java (4)
18-18: Test data setup looks good, consider organizing by animal typesThe test data provides good coverage with diverse animals and their attributes. Consider grouping the test data by animal types (e.g., all mammals together) for better maintainability.
animalList = new ArrayList<>(); // Mammals animalList.add(new Animal().setName("Lion").setType("Mammal").setHabitat("Savannah")); animalList.add(new Animal().setName("Elephant").setType("Mammal").setHabitat("Forest")); animalList.add(new Animal().setName("Whale").setType("Mammal").setHabitat("Ocean")); // Birds animalList.add(new Animal().setName("Parrot").setType("Bird").setHabitat("Rainforest")); animalList.add(new Animal().setName("Penguin").setType("Bird").setHabitat("Antarctic")); animalList.add(new Animal().setName("Eagle").setType("Bird").setHabitat("Mountains")); // Others animalList.add(new Animal().setName("Shark").setType("Fish").setHabitat("Ocean")); animalList.add(new Animal().setName("Crocodile").setType("Reptile").setHabitat("Swamp")); animalList.add(new Animal().setName("Frog").setType("Amphibian").setHabitat("Wetlands")); animalList.add(new Animal().setName("Snake").setType("Reptile").setHabitat("Desert"));Also applies to: 40-49
77-102: Good test coverage for search, consider adding edge casesThe search test effectively validates type-based filtering and keyset pagination. Consider adding tests for:
- Empty search results
- Multiple search criteria (type + habitat)
- Invalid scrollId handling
@Test void shouldReturnEmptyResultForNonExistentType() throws Exception { this.mockMvc .perform(get("/api/animals/search") .param("type", "NonExistentType")) .andExpect(status().isOk()) .andExpect(jsonPath("$.content", hasSize(0))) .andExpect(jsonPath("$.last", is(true))); }
Line range hint
118-129: Add assertions for new fields in responseWhile the test validates the basic creation flow, consider adding assertions for the new fields:
.andExpect(status().isCreated()) .andExpect(header().exists(HttpHeaders.LOCATION)) .andExpect(jsonPath("$.id", notNullValue())) - .andExpect(jsonPath("$.name", is(animalRequest.name()))); + .andExpect(jsonPath("$.name", is(animalRequest.name()))) + .andExpect(jsonPath("$.type", is(animalRequest.type()))) + .andExpect(jsonPath("$.habitat", is(animalRequest.habitat())));
Line range hint
130-149: Consider adding habitat field validationThe validation test effectively covers name and type fields. Consider adding a test case for habitat field validation if it's also a required field.
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/mapper/AnimalMapper.java (2)
15-16: Consider adding input validation for type and habitat fields.The mapping logic is correct, but consider adding validation to ensure that type and habitat values are valid before mapping to the entity.
public Animal toEntity(AnimalRequest animalRequest) { Animal animal = new Animal(); + if (animalRequest.type() == null || animalRequest.habitat() == null) { + throw new IllegalArgumentException("Type and habitat must not be null"); + } animal.setName(animalRequest.name()); animal.setType(animalRequest.type()); animal.setHabitat(animalRequest.habitat()); return animal; }
22-23: Consider adding consistency checks for entity updates.The mapping logic is correct, but consider adding checks to prevent unintended field updates to null values.
public void mapAnimalWithRequest(Animal animal, AnimalRequest animalRequest) { + if (animalRequest.type() != null) { animal.setType(animalRequest.type()); + } + if (animalRequest.habitat() != null) { animal.setHabitat(animalRequest.habitat()); + } animal.setName(animalRequest.name()); }jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/services/AnimalServiceTest.java (1)
44-46: Consider extracting test constants for better maintainability.While the assertions are correct, consider extracting the test values into constants to improve maintainability and reduce duplication between the test method and helper methods.
+ private static final String TEST_NAME = "junitName"; + private static final String TEST_TYPE = "junitType"; + private static final String TEST_HABITAT = "junitHabitat"; @Test void findAnimalById() { // given given(animalRepository.findById(1L)).willReturn(Optional.of(getAnimal())); given(animalMapper.toResponse(any(Animal.class))).willReturn(getAnimalResponse()); // when Optional<AnimalResponse> optionalAnimal = animalService.findAnimalById(1L); // then assertThat(optionalAnimal).isPresent().hasValueSatisfying(animalResponse -> { assertThat(animalResponse.id()).isEqualTo(1L); - assertThat(animalResponse.name()).isEqualTo("junitName"); - assertThat(animalResponse.type()).isEqualTo("junitType"); - assertThat(animalResponse.habitat()).isEqualTo("junitHabitat"); + assertThat(animalResponse.name()).isEqualTo(TEST_NAME); + assertThat(animalResponse.type()).isEqualTo(TEST_TYPE); + assertThat(animalResponse.habitat()).isEqualTo(TEST_HABITAT); }); }jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomWindow.java (1)
54-64: Protect against list modifications and optimize map operationThe
mapmethod should useList.copyOffor the transformed list, and theiterator()method should return an unmodifiable iterator to prevent external modifications.public <U> Window<U> map(Function<? super T, ? extends U> converter) { Assert.notNull(converter, "Function must not be null"); - return new CustomWindow<>(stream().map(converter).collect(Collectors.toList()), position, hasNext); + return new CustomWindow<>(List.copyOf(stream().map(converter).toList()), position, hasNext); } @Override public Iterator<T> iterator() { - return content.iterator(); + return content.stream().iterator(); }jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalSpecifications.java (2)
8-16: Reduce code duplication by extracting common logicThe
hasNameandhasTypemethods share identical logic, differing only in the field name. Consider extracting this into a reusable method.Here's a suggested refactor:
+private static Specification<Animal> hasField(String value, String fieldName) { + if (value != null) { + value = value.replaceAll("[%_]", "\\\\$0"); + } + return (root, query, criteriaBuilder) -> + value == null ? null : criteriaBuilder.like(root.get(fieldName), value + "%"); +} public static Specification<Animal> hasName(String name) { - return (root, query, criteriaBuilder) -> - name == null ? null : criteriaBuilder.like(root.get("name"), "%" + name + "%"); + return hasField(name, "name"); } public static Specification<Animal> hasType(String type) { - return (root, query, criteriaBuilder) -> - type == null ? null : criteriaBuilder.like(root.get("type"), "%" + type + "%"); + return hasField(type, "type"); }
6-17: Add documentation for the specification methodsConsider adding Javadoc to document the purpose, parameters, and behavior of these specification methods, especially regarding null handling and search patterns.
Add documentation like this:
public class AnimalSpecifications { + /** + * Creates a specification to filter Animals by name. + * @param name The name to search for. If null, no filtering is applied. + * @return A specification that matches animals whose names contain the given value. + */ public static Specification<Animal> hasName(String name) { // ... existing code ... } + /** + * Creates a specification to filter Animals by type. + * @param type The type to search for. If null, no filtering is applied. + * @return A specification that matches animals whose types contain the given value. + */ public static Specification<Animal> hasType(String type) { // ... existing code ... } }jpa/keyset-pagination/boot-data-window-pagination/src/main/resources/db/changelog/migration/02-create_animals_table.xml (1)
25-28: Consider adding indexes for frequently queried columnsSince
typeandhabitatare likely to be used in search queries (as indicated by the PR title mentioning pagination), consider adding indexes to improve query performance.Add these index definitions after the createTable block:
<createIndex indexName="idx_animals_type" tableName="animals"> <column name="type"/> </createIndex> <createIndex indexName="idx_animals_habitat" tableName="animals"> <column name="habitat"/> </createIndex>jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/web/controllers/AnimalControllerTest.java (3)
Line range hint
54-60: Update test data initialization to include new required fieldsThe test data initialization in
setUp()should include the new required fields (type, habitat, created) to maintain consistency with the entity structure and avoid potential null values in tests.@BeforeEach void setUp() { this.animalList = new ArrayList<>(); - animalList.add(new Animal().setId(1L).setName("Lion")); - animalList.add(new Animal().setId(2L).setName("Elephant")); - animalList.add(new Animal().setId(3L).setName("Giraffe")); + animalList.add(new Animal() + .setId(1L) + .setName("Lion") + .setType("Mammal") + .setHabitat("Savanna") + .setCreated(LocalDateTime.now())); + animalList.add(new Animal() + .setId(2L) + .setName("Elephant") + .setType("Mammal") + .setHabitat("Forest") + .setCreated(LocalDateTime.now())); + animalList.add(new Animal() + .setId(3L) + .setName("Giraffe") + .setType("Mammal") + .setHabitat("Savanna") + .setCreated(LocalDateTime.now())); }
119-121: Replace LocalDateTime.MAX with a realistic timestampUsing
LocalDateTime.MAXfor the created field is not representative of real-world scenarios. Consider using a fixed timestamp orLocalDateTime.now()for more realistic test data.- AnimalResponse animal = new AnimalResponse(animalId, "name 1", "junitType", "junitHabitat", LocalDateTime.MAX); + LocalDateTime testTimestamp = LocalDateTime.of(2024, 1, 1, 12, 0); + AnimalResponse animal = new AnimalResponse(animalId, "name 1", "junitType", "junitHabitat", testTimestamp);
146-148: Use meaningful test data instead of generic valuesThe test data uses generic values like "junitType" and "junitHabitat". Consider using more meaningful values that represent actual animal types and habitats for better test readability and documentation.
- AnimalResponse animalResponse = new AnimalResponse(1L, "Tiger", "junitType", "junitHabitat", LocalDateTime.MAX); - AnimalRequest animalRequest = new AnimalRequest("Tiger", "junitType", "junitHabitat"); + AnimalResponse animalResponse = new AnimalResponse(1L, "Tiger", "Mammal", "Jungle", LocalDateTime.now()); + AnimalRequest animalRequest = new AnimalRequest("Tiger", "Mammal", "Jungle");Also applies to: 186-190
jpa/keyset-pagination/boot-data-window-pagination/src/main/resources/application.properties (1)
6-6: Consider documenting virtual threads impactThe addition of virtual threads support is beneficial for scalability, particularly with pagination operations. However, it's important to ensure all blocking operations (especially database calls) are compatible.
Consider documenting:
- Expected performance improvements
- Any limitations with third-party libraries
- Monitoring strategy for thread usage
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/web/controllers/AnimalController.java (1)
49-57: Consider future extensibility of search criteriaThe current implementation might need to evolve to support additional search criteria. Consider using a dedicated search request object for better maintainability.
Example approach:
public record AnimalSearchRequest( String name, String type, @Min(1) @Max(100) int pageSize, Long scrollId, // Future fields can be added here without changing the endpoint signature String habitat, Integer ageGreaterThan ) {}Then modify the endpoint to:
@GetMapping("/search") public Window<AnimalResponse> searchAnimals(@Valid AnimalSearchRequest searchRequest)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalService.java (1)
76-77: Simplify by removing unnecessary variableThe assignment to
finalSpecificationis unnecessary unless there's a specific reason (e.g., usage in an inner class or lambda that requires a final or effectively final variable). You can usespecificationdirectly in the repository call.Apply this change:
- Specification<Animal> finalSpecification = specification; return animalRepository - .findAll(finalSpecification, PageRequest.of(0, pageSize, Sort.by(Sort.Order.asc("id"))), position) + .findAll(specification, PageRequest.of(0, pageSize, Sort.by(Sort.Order.asc("id"))), position) .map(animalMapper::toResponse);
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📒 Files selected for processing (23)
jpa/keyset-pagination/boot-data-window-pagination/docker/docker-compose.yml(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/pom.xml(2 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/config/JpaAuditConfig.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/entities/Animal.java(4 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/entities/Auditable.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/mapper/AnimalMapper.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/model/request/AnimalRequest.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/model/response/AnimalResponse.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/AnimalRepository.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepository.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepositoryImpl.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomWindow.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalService.java(2 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalSpecifications.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/web/controllers/AnimalController.java(2 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/resources/application.properties(2 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/resources/db/changelog/migration/02-create_animals_table.xml(2 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/common/ContainersConfig.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/services/AnimalServiceTest.java(3 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/web/controllers/AnimalControllerIT.java(8 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/web/controllers/AnimalControllerTest.java(7 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/test/resources/application-test.properties(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/test/resources/logback-test.xml(1 hunks)
✅ Files skipped from review due to trivial changes (3)
- jpa/keyset-pagination/boot-data-window-pagination/docker/docker-compose.yml
- jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/entities/Auditable.java
- jpa/keyset-pagination/boot-data-window-pagination/src/test/resources/application-test.properties
🧰 Additional context used
📓 Learnings (1)
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/entities/Animal.java (1)
Learnt from: rajadilipkolli
PR: rajadilipkolli/my-spring-boot-experiments#1487
File: jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/entities/Animal.java:0-0
Timestamp: 2024-11-10T16:27:45.210Z
Learning: Because `@Setter(chain = true)` is not available in the Lombok version used in this project, manually implemented fluent setter methods are used in Java entity classes such as `com.example.keysetpagination.entities.Animal`.
🔇 Additional comments (26)
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepository.java (1)
9-11: Well-designed interface for keyset pagination!
The interface follows Spring Data best practices with a clean, focused design using modern pagination features.
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/AnimalRepository.java (2)
6-6: Clean and well-structured repository interface design!
The interface follows Spring Data best practices by combining JpaRepository with a custom repository interface, allowing for clean separation of standard CRUD operations and custom query methods.
6-6: Verify the custom repository implementation
Let's ensure the CustomAnimalRepository implementation follows Spring Data naming conventions and handles edge cases properly.
✅ Verification successful
The custom repository implementation follows Spring Data conventions and handles edge cases appropriately
The implementation follows Spring Data JPA naming conventions with CustomAnimalRepositoryImpl suffix and properly handles:
- Keyset pagination through
ScrollPositionandKeysetScrollPosition - Dynamic sorting with proper order handling
- Proper handling of empty results and last page detection
- Efficient pagination by fetching one extra record to determine if more results exist
- Proper null handling for specifications
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify the custom repository implementation and its usage
# Check if the implementation class follows Spring Data naming conventions
fd -e java "CustomAnimalRepositoryImpl.java" -x cat {} \;
# Check for proper error handling in the implementation
rg -A 10 "throw new|catch" CustomAnimalRepositoryImpl.java
# Verify ScrollPosition handling for edge cases
rg -A 5 "ScrollPosition" CustomAnimalRepositoryImpl.java
# Check test coverage for edge cases
fd -e java -p "test.*Animal.*Test" -x cat {} \;
Length of output: 18257
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/config/JpaAuditConfig.java (1)
6-9: LGTM! Correct configuration for JPA auditing.
The configuration is properly set up with the necessary annotations, and the comment correctly explains the proxy requirement.
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/entities/Animal.java (1)
Line range hint 22-35: LGTM! Well-structured entity with proper auditing setup.
The Animal entity is well-designed with:
- Proper extension of Auditable for audit fields
- Clear field definitions with appropriate constraints
- Consistent use of schema definition
jpa/keyset-pagination/boot-data-window-pagination/pom.xml (1)
Line range hint 70-84: LGTM! Verify pagination-specific dependencies
The core dependencies for JPA, PostgreSQL, and Liquibase are correctly configured. However, since this PR implements window pagination, consider verifying if any additional Spring Data specific dependencies are needed for advanced pagination features.
✅ Verification successful
Let me verify if the Spring Data JPA dependency already includes the Window interface by checking its implementation.
Dependencies are correctly configured for window pagination
The project correctly implements window pagination using Spring Data's Window interface from the spring-boot-starter-data-jpa dependency. The CustomWindow class properly implements org.springframework.data.domain.Window, and all required dependencies are present in the pom.xml file.
🏁 Scripts executed
The following scripts were executed for the analysis:
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#!/bin/bash
# Check if the project already includes required Spring Data dependencies for window functions
rg -l "org.springframework.data.domain.Window" || echo "Window interface not found in dependencies"
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#!/bin/bash
# Check the implementation of CustomWindow to understand if it's extending Spring's Window interface
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Length of output: 1847
jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/web/controllers/AnimalControllerIT.java (2)
Line range hint 59-66: LGTM! Comprehensive pagination assertions
The pagination assertions thoroughly verify all metadata attributes with correct values matching the new dataset size.
154-166: LGTM! Comprehensive update test coverage
The update tests thoroughly verify all fields and cover various scenarios including successful updates, idempotency, and error cases.
Also applies to: 172-172, 190-190
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/mapper/AnimalMapper.java (1)
27-28: Verify created timestamp handling in the response.
The mapping looks good and includes all necessary fields. However, let's verify that the created timestamp is properly initialized in the entity.
✅ Verification successful
Created timestamp handling is properly implemented
The created field is correctly implemented in the Auditable superclass with:
@CreatedDateannotation for automatic timestamp generation@EntityListeners(AuditingEntityListener.class)for JPA auditing support- Proper column constraints (
nullable = false, updatable = false) - Appropriate type (
LocalDateTime)
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check if the Auditable superclass properly initializes the created field
ast-grep --pattern 'class Auditable {
$$$
@PrePersist
$$$
}'
Length of output: 68
Script:
#!/bin/bash
# Let's try a broader search for the Auditable class and its implementation
rg -l "class Auditable"
# Then search for PrePersist annotation usage
rg "@PrePersist" -A 3
Length of output: 250
Script:
#!/bin/bash
# Let's examine the Auditable class implementation in the correct project
cat "jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/entities/Auditable.java"
Length of output: 723
jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/services/AnimalServiceTest.java (2)
14-14: LGTM!
The LocalDateTime import is correctly added and necessary for the test implementation.
61-61: Verify AnimalResponse constructor parameter order.
The helper methods are properly updated with the new fields. However, let's verify that the order of parameters in the AnimalResponse constructor matches the record's definition to prevent potential issues.
Also applies to: 65-65
✅ Verification successful
Constructor parameters are correctly ordered
The AnimalResponse record is defined with parameters (Long id, String name, String type, String habitat, LocalDateTime created), and the test helper method uses the constructor with matching parameter order: (1L, "junitName", "junitType", "junitHabitat", LocalDateTime.MAX). The implementation is correct.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify AnimalResponse record definition matches constructor usage
# Expected: Parameters should be in order: id, name, type, habitat, created
ast-grep --pattern 'record AnimalResponse($$$) {
$$$
}'
Length of output: 59
Script:
#!/bin/bash
# Let's try to find the AnimalResponse record definition using ripgrep
rg "record AnimalResponse" -A 5
Length of output: 267
Script:
#!/bin/bash
# Let's check the constructor usage in the test file
rg "new AnimalResponse" -A 1 "AnimalServiceTest.java"
Length of output: 116
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#!/bin/bash
# Let's find the full path to the test file first and then check the constructor usage
fd AnimalServiceTest.java --exec rg "new AnimalResponse" -A 1 {}
Length of output: 174
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomWindow.java (2)
25-44: LGTM! Basic operations are well implemented
The implementations of size(), isEmpty(), getContent(), and hasNext() are correct and straightforward.
45-52: Consider enhancing position calculation logic
The current implementation returns the same position regardless of the index. Consider implementing a more sophisticated position calculation based on the actual item at the given index.
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalSpecifications.java (1)
10-10: Use type-safe field references
Using string literals for field names makes the code fragile to refactoring. Consider using metamodel classes for type-safe JPA queries.
Let's check if the project already has JPA metamodel generation configured:
Also applies to: 15-15
jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/common/ContainersConfig.java (2)
15-15: Verify PostgreSQL version selection
The upgrade to PostgreSQL 17.2-alpine is good, but let's verify it's the most appropriate version.
✅ Verification successful
Based on the analysis of the codebase, I can now generate the final response regarding the PostgreSQL version selection:
PostgreSQL 17.2-alpine is appropriate and aligned with project standards
The version 17.2-alpine is currently being used consistently across multiple test containers and docker-compose files in the project, particularly in newer or recently updated modules. This version is appropriate because:
- It's the latest stable minor version in the PostgreSQL 17.x series
- It follows the project's pattern of using Alpine-based images for smaller footprint
- Other modules in the codebase are also being updated to use PostgreSQL 17.x versions
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check latest PostgreSQL 17.x tags and potential issues
# Get latest official PostgreSQL 17.x Alpine tags
curl -s https://registry.hub.docker.com/v2/repositories/postgres/tags?page_size=100 | \
jq -r '.results[].name' | grep '^17' | grep alpine
# Check for any reported issues
gh api graphql -f query='
{
securityVulnerabilities(first: 5, ecosystem: CONTAINER, package: "postgres") {
nodes {
advisory {
summary
severity
publishedAt
}
vulnerableVersionRange
firstPatchedVersion {
identifier
}
}
}
}'
Length of output: 982
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#!/bin/bash
# Let's try a different approach to verify PostgreSQL version
# Check if there are any other PostgreSQL container versions used in the codebase
rg -l "PostgreSQLContainer|postgres:" --type-add 'docker:*.{dockerfile,yml,yaml}' --type docker --type java
# Check the content of these files to understand version patterns
fd -e java -e yml -e yaml -e dockerfile . -x grep -l "postgres" {} \; -x cat {}
Length of output: 67341
15-15: Consider documenting the removal of custom PostgreSQL configuration
The removal of custom PostgreSQL command-line arguments means we're now using default configuration. Please verify if this is intentional and if the defaults meet all test requirements.
jpa/keyset-pagination/boot-data-window-pagination/src/main/resources/db/changelog/migration/02-create_animals_table.xml (2)
Line range hint 14-36: LGTM on table structure
The overall table structure is well-designed with:
- Proper sequence generation for IDs
- Appropriate use of constraints
- Good handling of string types across different databases
- Version column for optimistic locking
7-7: Verify Liquibase schema version compatibility
The schema location has been updated to version 4.29. Please ensure all development and deployment environments have compatible Liquibase versions.
✅ Verification successful
Schema version update is compatible with existing codebase
The update to Liquibase schema version 4.29 in the animals table changelog is compatible with the project's setup. The codebase shows:
- Most recent changelogs use versions 4.20-4.29
- The same version (4.29) is already in use in other parts of the codebase (e.g., multidatasource-multitenancy)
- Spring Boot manages Liquibase core dependency version, ensuring compatibility across the project
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check pom.xml for Liquibase version
rg -A 5 "liquibase" pom.xml
Length of output: 27
Script:
#!/bin/bash
# Search for pom.xml files recursively in the repository
fd "pom.xml" --type f --exec cat {} \; | grep -A 5 -i "liquibase"
# Also check for gradle build files
fd "build.gradle" --type f --exec cat {} \; | grep -A 5 -i "liquibase"
# Check application properties for Liquibase version
fd "application.*properties" --type f --exec cat {} \; | grep -i "liquibase"
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fd "pom.xml" --type f --exec grep -B 5 -A 5 "<liquibase.version>" {} \;
# Check the actual changelog files to see what versions are currently in use
fd "changelog" --type d --exec find {} -type f -name "*.xml" -exec grep -l "dbchangelog.*xsd" {} \;
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# Find and check XML changelog files for schema versions
fd -e xml -t f . src/main/resources/db/changelog | xargs grep -l "dbchangelog.*xsd"
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fd -e xml -t f . src/main/resources/db/changelog | xargs grep "dbchangelog.*xsd"
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fd -e xml -t f . | xargs grep -l "dbchangelog.*xsd"
# Show the actual content of found files to see schema versions
fd -e xml -t f . | xargs grep "dbchangelog.*xsd"
# Also check for changelog master files
fd "changelog-master.xml" --type f --exec cat {} \;
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jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/web/controllers/AnimalControllerTest.java (1)
Line range hint 161-179: Enhance validation test coverage
The test verifies name and type validation but should also verify habitat field validation if it's a required field. Additionally, consider testing field size limits if they exist.
jpa/keyset-pagination/boot-data-window-pagination/src/test/resources/logback-test.xml (1)
14-14: LGTM! Consider log volume in CI/CD
The query logger configuration is correctly set up and properly integrated with the JDBC datasource proxy configuration in application.properties.
Verify the log volume impact in CI/CD pipelines:
✅ Verification successful
Based on the search results, I can now generate the final response:
LGTM - Query logging is properly configured
The query logger configuration is correctly integrated with the datasource proxy setup in the application. The log volume in CI/CD should not be a concern because:
- The logger is only enabled in test environment via logback-test.xml
- The query logging is configured through datasource-proxy with proper SLF4J integration
- The application uses standard Spring Boot logging configuration with appropriate log levels
🏁 Scripts executed
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Script:
#!/bin/bash
# Description: Check for potential high-volume logging statements that might affect CI/CD performance
rg -g '*.java' -B 2 -A 2 'query-logger'
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#!/bin/bash
# Let's check application.properties for the query logger configuration
fd -g 'application*.properties' --exec cat {}
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# Let's also check if there are any SQL-related logging configurations in Java files
rg -g '*.java' -B 2 -A 2 'datasource.*proxy|jdbc.*log'
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# Check for any logging configuration classes
ast-grep --pattern 'class $_ {
$$$
datasource($$$) {
$$$
}
$$$
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fd -g '*test*.xml' -g '*test*.properties' --exec grep -l 'query-logger'
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rg -g '*.java' -B 2 -A 2 'DataSourceProxy|ProxyDataSource'
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jpa/keyset-pagination/boot-data-window-pagination/src/main/resources/application.properties (1)
31-34: Verify query logging configuration
The JDBC datasource proxy configuration is well-structured and properly integrated with the logback configuration. However, enabling query logging with parameter values in production might have security implications.
Let's verify the configuration usage:
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/web/controllers/AnimalController.java (2)
13-13: LGTM: Import statement is correctly placed
The Window import is appropriately added and necessary for the new search functionality.
56-56: Verify error handling in the service layer
Ensure that the service layer properly handles invalid scroll IDs and provides meaningful error messages.
✅ Verification successful
Let me analyze the code related to scroll ID handling. I'll search for any error handling specific to the keyset pagination implementation.
Let me search specifically for the error handling in the keyset pagination implementation.
Based on the code analysis, I can now provide a final response regarding the error handling for invalid scroll IDs.
Invalid scroll IDs are handled implicitly by Spring Data's keyset pagination
The implementation uses Spring Data's built-in ScrollPosition mechanism which safely handles invalid scroll IDs:
- When scrollId is null, it creates an initial ScrollPosition using
ScrollPosition.keyset() - When scrollId is provided, it creates a position using
ScrollPosition.of(Collections.singletonMap("id", scrollId), ScrollPosition.Direction.FORWARD) - The repository implementation properly handles the scroll position by converting it to a database predicate
- If an invalid scrollId is provided, the query will simply return an empty result set with
hasMore=false
No additional error handling is needed as the keyset pagination implementation gracefully handles invalid scroll IDs by design.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check if the service layer includes proper error handling for invalid scroll IDs
# Look for error handling related to scroll ID
rg -A 5 "scrollId" src/main/java/com/example/keysetpagination/services/
# Check for custom exceptions related to pagination
rg -A 5 "Exception" src/main/java/com/example/keysetpagination/exception/
Length of output: 332
Script:
#!/bin/bash
# Let's first find the correct paths using fd
fd -t d services
fd -t d exception
# Then search for scrollId in all Java files
fd -e java | xargs rg -A 5 "scrollId"
# Search for Exception handling patterns in Java files
fd -e java | xargs rg -A 5 "throw|catch|Exception"
Length of output: 72359
Script:
#!/bin/bash
# Look for the implementation of AnimalService and any related error handling
ast-grep --pattern 'class AnimalService {
$$$
searchAnimals($$$) {
$$$
}
$$$
}'
# Search for any custom exceptions related to scrolling/pagination
fd -e java | xargs rg -B 2 -A 5 "class \w+Exception"
# Look for any global exception handling related to pagination
fd -e java | xargs rg -B 2 -A 5 "@ControllerAdvice|@RestControllerAdvice"
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#!/bin/bash
# Look for the GlobalExceptionHandler in the keyset-pagination project
fd -e java -p "keyset-pagination/boot-data-window-pagination.*GlobalExceptionHandler"
# Look for the implementation of ScrollPosition handling
fd -e java | xargs rg -B 2 -A 5 "ScrollPosition"
# Look for any validation or error handling in AnimalService
fd -e java | xargs rg -B 2 -A 5 "class AnimalService"
Length of output: 16993
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepositoryImpl.java (1)
35-43: 🛠️ Refactor suggestion
Make ScrollPosition.Direction dynamic based on the provided ScrollPosition
Currently, the ScrollPosition.Direction is hardcoded as FORWARD. To support both forward and backward pagination dynamically, you should extract the direction from the provided scrollPosition. This ensures that your pagination logic correctly handles the user's intended navigation direction.
You can modify your code as follows:
public Window<Animal> findAll(Specification<Animal> spec, PageRequest pageRequest, ScrollPosition scrollPosition) {
// Existing code
// ...
// Determine direction dynamically, defaulting to FORWARD if not specified
- // Generate next scroll position using the hardcoded direction
- ScrollPosition nextScrollPosition = results.isEmpty()
- ? ScrollPosition.offset()
- : ScrollPosition.of(Map.of("id", results.get(results.size() - 1).getId()), ScrollPosition.Direction.FORWARD);
+ ScrollPosition.Direction direction = ScrollPosition.Direction.FORWARD;
+ if (scrollPosition instanceof KeysetScrollPosition keysetPosition) {
+ direction = keysetPosition.getDirection();
+ // Existing logic for keysetPosition
+ Map<String, Object> keysetMap = keysetPosition.getKeys();
+ // ...
+ }
+ // Generate next scroll position using the dynamic direction
+ ScrollPosition nextScrollPosition = results.isEmpty()
+ ? ScrollPosition.offset()
+ : ScrollPosition.of(Map.of("id", results.get(results.size() - 1).getId()), direction);
// ...
}Also applies to: 69-71
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalService.java (2)
30-35: Constructor implementation is appropriate
The explicit constructor correctly initializes the animalRepository and animalMapper dependencies, enhancing clarity and explicitness in dependency injection.
79-79: Confirm sorting field for pagination
Ensure that sorting by "id" in ascending order aligns with your keyset pagination strategy. If there's a more appropriate field for ordering (e.g., creation timestamp or a unique sequential identifier), consider using that to avoid potential issues with non-sequential IDs.
If you'd like to verify the fields available for sorting and their usage in the codebase, consider running the following script:
This script searches for the Animal class definition and displays its fields, allowing you to assess which field is most suitable for sorting in pagination.
✅ Verification successful
Using id for keyset pagination is appropriate in this case
The current implementation using id as the sorting field is correct and optimal for keyset pagination because:
- The
idfield is generated using@GeneratedValue(strategy = GenerationType.SEQUENCE), ensuring sequential and unique values - It's a non-null field by nature of being the primary key
- The field is immutable, making it a reliable anchor for pagination
- The default sorting configuration in
AppConstants.javais already aligned with this strategy (DEFAULT_SORT_BY = "id")
While the entity does have a created timestamp from Auditable, using id is still preferable as it guarantees uniqueness even when multiple records are created in the same millisecond.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: List all fields in the Animal entity to verify optimal sorting field for pagination.
# Display the fields of the Animal entity
rg --multiline --no-filename 'class\s+Animal.*\{([\s\S]*?)\}' src/main/java/com/example/keysetpagination/entities/Animal.java
Length of output: 231
Script:
#!/bin/bash
# Let's first find the correct path to the Animal entity
fd -t f "Animal.java"
# Then examine its content
rg --multiline "class\s+Animal" -A 20
Length of output: 26893
Script:
#!/bin/bash
# Let's check if there's an Auditable class that Animal extends from, as it might contain creation timestamp
fd -t f "Auditable.java"
# Also check for any constants related to sorting
rg -l "DEFAULT_SORT"
Length of output: 5179
Script:
#!/bin/bash
# Let's check the Auditable class content and AppConstants for this specific project
cat jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/entities/Auditable.java
cat jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/utils/AppConstants.java
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...indow-pagination/src/main/java/com/example/keysetpagination/model/request/AnimalRequest.java
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| private List<T> content; | ||
| private ScrollPosition position; | ||
| private boolean hasNext; |
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🛠️ Refactor suggestion
Enhance field encapsulation and immutability
The fields should be declared as private final to ensure proper encapsulation and prevent accidental modifications after construction.
- private List<T> content;
- private ScrollPosition position;
- private boolean hasNext;
+ private final List<T> content;
+ private final ScrollPosition position;
+ private final boolean hasNext;📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| private List<T> content; | |
| private ScrollPosition position; | |
| private boolean hasNext; | |
| private final List<T> content; | |
| private final ScrollPosition position; | |
| private final boolean hasNext; |
| public CustomWindow(List<T> content, ScrollPosition position, boolean hasNext) { | ||
| this.content = content; | ||
| this.position = position; | ||
| this.hasNext = hasNext; | ||
| } | ||
|
|
||
| public CustomWindow() {} |
There was a problem hiding this comment.
Improve constructor safety and remove unnecessary default constructor
The constructor should validate inputs and make a defensive copy of the content list. The default constructor appears unnecessary and could lead to NullPointerException.
- public CustomWindow(List<T> content, ScrollPosition position, boolean hasNext) {
+ public CustomWindow(List<T> content, ScrollPosition position, boolean hasNext) {
+ Assert.notNull(content, "Content must not be null");
+ Assert.notNull(position, "Position must not be null");
+ this.content = List.copyOf(content);
this.position = position;
this.hasNext = hasNext;
}
- public CustomWindow() {}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| public CustomWindow(List<T> content, ScrollPosition position, boolean hasNext) { | |
| this.content = content; | |
| this.position = position; | |
| this.hasNext = hasNext; | |
| } | |
| public CustomWindow() {} | |
| public CustomWindow(List<T> content, ScrollPosition position, boolean hasNext) { | |
| Assert.notNull(content, "Content must not be null"); | |
| Assert.notNull(position, "Position must not be null"); | |
| this.content = List.copyOf(content); | |
| this.position = position; | |
| this.hasNext = hasNext; | |
| } |
| public static Specification<Animal> hasName(String name) { | ||
| return (root, query, criteriaBuilder) -> | ||
| name == null ? null : criteriaBuilder.like(root.get("name"), "%" + name + "%"); | ||
| } |
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Consider sanitizing input parameters and avoiding leading wildcards
The current implementation has two potential issues:
- SQL Injection Risk: Direct string concatenation with user input in LIKE clauses could potentially lead to SQL injection if the input isn't properly sanitized.
- Performance Impact: Using leading wildcards (
%name%) prevents the database from utilizing indexes effectively.
Consider applying these improvements:
public static Specification<Animal> hasName(String name) {
+ if (name != null) {
+ name = name.replaceAll("[%_]", "\\\\$0"); // Escape special characters
+ }
return (root, query, criteriaBuilder) ->
- name == null ? null : criteriaBuilder.like(root.get("name"), "%" + name + "%");
+ name == null ? null : criteriaBuilder.like(root.get("name"), name + "%");
}
public static Specification<Animal> hasType(String type) {
+ if (type != null) {
+ type = type.replaceAll("[%_]", "\\\\$0"); // Escape special characters
+ }
return (root, query, criteriaBuilder) ->
- type == null ? null : criteriaBuilder.like(root.get("type"), "%" + type + "%");
+ type == null ? null : criteriaBuilder.like(root.get("type"), type + "%");
}Also applies to: 13-16
...data-window-pagination/src/main/resources/db/changelog/migration/02-create_animals_table.xml
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...-pagination/src/main/java/com/example/keysetpagination/web/controllers/AnimalController.java
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| for (Map.Entry<String, Object> entry : keysetMap.entrySet()) { | ||
| String property = entry.getKey(); | ||
| Object value = entry.getValue(); | ||
| Predicate scrollPredicate = cb.greaterThan(root.get(property), (Comparable) value); |
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Ensure all key values are Comparable to prevent ClassCastException
In the line where value is cast to (Comparable), there's a potential risk of a ClassCastException if any of the values in keysetPosition.getKeys().values() are not Comparable. This can occur at runtime and cause the application to crash. Ensure that all key values are instances of Comparable. If not, consider adding a check or handling non-comparable types appropriately.
...tion/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepositoryImpl.java
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...ata-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalService.java
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (5)
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalService.java (1)
68-78: Consider adding parameter validation and making sort field configurable.While the implementation is solid, consider these improvements:
- Add validation for pageSize to prevent potential performance issues
- Make the sort field configurable instead of hardcoding "id"
Here's a suggested improvement:
+ private static final String DEFAULT_SORT_FIELD = "id"; + private static final int MAX_PAGE_SIZE = 100; public Window<AnimalResponse> searchAnimals(String name, String type, int pageSize, Long scrollId) { + if (pageSize <= 0 || pageSize > MAX_PAGE_SIZE) { + throw new IllegalArgumentException("Page size must be between 1 and " + MAX_PAGE_SIZE); + } Specification<Animal> specification = Specification.where(null); if (name != null && !name.isEmpty()) { specification = specification.and(AnimalSpecifications.hasName(name)); } if (type != null && !type.isEmpty()) { specification = specification.and(AnimalSpecifications.hasType(type)); } ScrollPosition position = scrollId == null ? ScrollPosition.keyset() : ScrollPosition.of(Collections.singletonMap(DEFAULT_SORT_FIELD, scrollId), ScrollPosition.Direction.FORWARD); Specification<Animal> finalSpecification = specification; return animalRepository - .findAll(finalSpecification, PageRequest.of(0, pageSize, Sort.by(Sort.Order.asc("id"))), position) + .findAll(finalSpecification, PageRequest.of(0, pageSize, Sort.by(Sort.Order.asc(DEFAULT_SORT_FIELD))), position) .map(animalMapper::toResponse); }jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/web/controllers/AnimalController.java (1)
61-73: Consider enhancing the endpoint with additional improvements.The implementation looks good but could be further enhanced with:
- Add
@ResponseStatus(HttpStatus.OK)to explicitly document the success status- Add validation for parameter combinations
- Include more specific error responses in
@ApiResponsesHere's a suggested improvement:
@Operation(summary = "Search animals with keyset pagination support") @ApiResponses( value = { @ApiResponse(responseCode = "200", description = "Successfully retrieved animals"), @ApiResponse(responseCode = "400", description = "Invalid parameters supplied") + @ApiResponse(responseCode = "404", description = "No animals found matching criteria") }) +@ResponseStatus(HttpStatus.OK) @GetMapping("/search") public Window<AnimalResponse> searchAnimals( @Parameter(description = "Animal name to search for") @RequestParam(required = false) String name, @Parameter(description = "Animal type to filter by") @RequestParam(required = false) String type, @Parameter(description = "Number of items per page (max 100)") @RequestParam(defaultValue = "10") @Min(1) @Max(100) int pageSize, @Parameter(description = "Scroll ID for pagination") @RequestParam(required = false) Long scrollId) { + // Validate parameter combinations + if (scrollId != null && (name != null || type != null)) { + throw new IllegalArgumentException("Search criteria cannot be changed when using scrollId"); + } return animalService.searchAnimals(name, type, pageSize, scrollId); }jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/web/controllers/AnimalControllerIT.java (3)
40-49: Consider refactoring test data initialization for better maintainabilityThe test data setup could be made more maintainable by using a test data builder pattern or extracting the test data to a separate test fixture file.
Here's a suggested approach using a builder pattern:
private Animal createAnimal(String name, String type, String habitat) { return new Animal().setName(name).setType(type).setHabitat(habitat); } @BeforeEach void setUp() { animalRepository.deleteAllInBatch(); animalList = List.of( createAnimal("Lion", "Mammal", "Savannah"), createAnimal("Elephant", "Mammal", "Forest"), // ... remaining animals ); animalList = animalRepository.saveAll(animalList); }
77-102: Enhance search tests with additional edge cases and documentationWhile the test covers basic search functionality well, consider adding:
- JavaDoc explaining the window pagination mechanism
- Additional test cases for:
- Case-insensitive search
- Multiple search criteria
- Invalid scrollId handling
Example documentation:
/** * Tests the window-based pagination search functionality. * The test verifies: * 1. Initial search returns first page of results * 2. Subsequent search with scrollId returns next page * 3. Last page is properly indicated */ @Test void shouldSearchAnimals() { // existing test code }
Line range hint
141-159: Make validation test more explicit about required fieldsThe test method name could better reflect that it's specifically testing required field validation. Consider renaming to
shouldReturn400WhenRequiredFieldsAreMissing.Also, consider adding a comment explaining which fields are required and why:
/** * Verifies that the API properly validates required fields: * - name: Required for animal identification * - type: Required for animal classification * habitat is optional and can be null */ @Test void shouldReturn400WhenRequiredFieldsAreMissing() { // existing test code }
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (8)
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/config/JpaAuditConfig.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/model/request/AnimalRequest.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/model/response/AnimalResponse.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepository.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepositoryImpl.java(1 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalService.java(2 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/web/controllers/AnimalController.java(2 hunks)jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/web/controllers/AnimalControllerIT.java(7 hunks)
🚧 Files skipped from review as they are similar to previous changes (4)
- jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/model/response/AnimalResponse.java
- jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/config/JpaAuditConfig.java
- jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepository.java
- jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/model/request/AnimalRequest.java
🧰 Additional context used
📓 Learnings (1)
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepositoryImpl.java (1)
Learnt from: rajadilipkolli
PR: rajadilipkolli/my-spring-boot-experiments#1543
File: jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepositoryImpl.java:71-71
Timestamp: 2024-12-02T15:24:59.571Z
Learning: In Java 21 and above, the `java.util.List` interface includes the methods `getFirst()` and `getLast()`. When reviewing code that uses these methods, it's acceptable if the project is using Java 21 or higher.
🔇 Additional comments (10)
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalService.java (3)
11-11: LGTM! Import statements are appropriate.
The new imports correctly support the keyset pagination implementation.
Also applies to: 17-20
31-34: LGTM! Constructor injection is well implemented.
Explicit constructor injection is a good practice as it makes dependencies clear and improves testability.
57-66: LGTM! Specification building is now correctly implemented.
The implementation properly chains conditions and fixes the previous logical error in building specifications.
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/web/controllers/AnimalController.java (3)
10-16: LGTM! Appropriate imports added for documentation, validation, and pagination.
The new imports support the implementation of:
- OpenAPI documentation using Swagger annotations
- Input validation using Jakarta validation constraints
- Keyset pagination using Spring Data's Window
Also applies to: 19-19
55-60: Documentation implementation matches previous review suggestions.
The OpenAPI documentation has been implemented as suggested in the previous review.
61-73: Verify keyset pagination implementation in the service layer.
The controller correctly uses Spring Data's Window type for keyset pagination, but we should verify the service implementation.
✅ Verification successful
Let me gather more information about the service implementation to verify the complete keyset pagination setup.
Let me check one final aspect - the repository interface to ensure it extends the correct Spring Data interface for keyset pagination.
Based on the gathered information, I can now provide the final response:
Keyset pagination is correctly implemented
The implementation shows proper usage of Spring Data's keyset pagination:
- Correctly uses
ScrollPosition.keyset()for initial position andScrollPosition.of()for subsequent pages - Proper sorting configuration with
Sort.by(Sort.Order.asc("id"))which is essential for keyset pagination - Appropriate use of
Window<AnimalResponse>return type - Repository extends
JpaRepositorywhich supports keyset pagination operations
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for the service implementation to verify correct usage of keyset pagination
echo "Searching for AnimalService implementation..."
rg -l "class.*AnimalService.*implements"
echo "Checking for proper usage of ScrollPosition..."
ast-grep --pattern 'ScrollPosition.keyset($$$)'
echo "Checking for proper usage of Window..."
rg -A 5 "Window<.*> searchAnimals"
Length of output: 2848
Script:
#!/bin/bash
# Check the complete implementation of AnimalService
echo "Checking AnimalService implementation..."
rg -A 20 "public Window<AnimalResponse> searchAnimals" jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalService.java
# Check if there's proper sorting configuration
echo "Checking for sorting configuration..."
rg -A 5 "Sort|OrderBy" jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalService.java
# Check repository usage
echo "Checking repository implementation..."
rg -A 5 "findBy|findAll.*ScrollPosition" jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/services/AnimalService.java
Length of output: 3347
Script:
#!/bin/bash
# Check repository interface
echo "Checking AnimalRepository interface..."
rg -A 5 "interface.*AnimalRepository" jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/AnimalRepository.java
# Check if there are any custom query methods
echo "Checking for custom query methods..."
rg -A 5 "@Query.*Animal" jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/AnimalRepository.java
Length of output: 589
jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/web/controllers/AnimalControllerIT.java (2)
Line range hint 59-66: LGTM! Comprehensive pagination metadata validation
The assertions thoroughly validate all aspects of the pagination response, including total elements, page information, and navigation flags.
Line range hint 1-224: Verify complete controller endpoint coverage
Let's ensure all controller endpoints have corresponding test coverage.
✅ Verification successful
Let me analyze the endpoints in AnimalController and compare them with the test coverage in AnimalControllerIT.
All controller endpoints are properly tested with comprehensive coverage
The verification shows complete test coverage for all endpoints in AnimalController:
-
GET / (base endpoint):
- Tested by
shouldFetchAllAnimals()andshouldFetchAnimalsWithCustomPageSize()
- Tested by
-
GET /search:
- Tested by
shouldSearchAnimals()andshouldReturnEmptyResultForNonExistentType()
- Tested by
-
GET /{id}:
- Tested by
shouldFindAnimalById()
- Tested by
-
POST /:
- Tested by
shouldCreateNewAnimal()andshouldReturn400WhenCreateNewAnimalWithoutNameAndType()
- Tested by
-
PUT /{id}:
- Tested by
shouldUpdateAnimal(),shouldBeIdempotentWhenUpdatingAnimalWithSameData(), andshouldReturn404WhenUpdatingNonExistingAnimal()
- Tested by
-
DELETE /{id}:
- Tested by
shouldDeleteAnimal()
- Tested by
Each endpoint has both happy path and error case coverage where applicable.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify that all controller endpoints have corresponding test coverage
# Find all endpoints in the controller
echo "Finding all endpoints in AnimalController..."
rg -l "(@GetMapping|@PostMapping|@PutMapping|@DeleteMapping|@RequestMapping)" --type java | grep "Controller.java" | while read -r controller; do
echo "Endpoints in $controller:"
rg "(@GetMapping|@PostMapping|@PutMapping|@DeleteMapping|@RequestMapping)" "$controller"
done
# Find all corresponding test methods
echo -e "\nFinding all test methods in AnimalControllerIT..."
rg "^ @Test" "jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/web/controllers/AnimalControllerIT.java"
Length of output: 31340
Script:
#!/bin/bash
# Get specific endpoints from AnimalController
echo "Endpoints in AnimalController:"
rg "(@GetMapping|@PostMapping|@PutMapping|@DeleteMapping)" "jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/web/controllers/AnimalController.java"
echo -e "\nTest methods in AnimalControllerIT:"
rg "^ void \w+" "jpa/keyset-pagination/boot-data-window-pagination/src/test/java/com/example/keysetpagination/web/controllers/AnimalControllerIT.java"
Length of output: 1339
jpa/keyset-pagination/boot-data-window-pagination/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepositoryImpl.java (2)
40-40: Ensure all key values are Comparable to prevent ClassCastException
Casting value to (Comparable) may lead to a ClassCastException at runtime if any values are not Comparable. Ensure that all key values are instances of Comparable or handle non-comparable types appropriately.
69-71: Make Direction dynamic in ScrollPosition
Currently, ScrollPosition.Direction.FORWARD is hardcoded, which may limit backward pagination. To make the direction dynamic, consider determining it based on the current ScrollPosition or accepting it as an additional parameter.
...tion/src/main/java/com/example/keysetpagination/repositories/CustomAnimalRepositoryImpl.java
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| import com.example.keysetpagination.entities.Animal; | ||
| import org.springframework.data.jpa.domain.Specification; | ||
|
|
||
| public class AnimalSpecifications { |
There was a problem hiding this comment.
@coderabbitai, how to create Specification Dynmically instead of hardcoding
There was a problem hiding this comment.
@rajadilipkolli, to create Specifications dynamically instead of hardcoding them, you can build them at runtime based on the presence of input parameters. Here's how you can do it:
public Specification<Animal> buildSpecification(String name, String type) {
Specification<Animal> spec = Specification.where(null);
if (name != null && !name.isEmpty()) {
spec = spec.and((root, query, criteriaBuilder) ->
criteriaBuilder.like(root.get("name"), "%" + name + "%"));
}
if (type != null && !type.isEmpty()) {
spec = spec.and((root, query, criteriaBuilder) ->
criteriaBuilder.like(root.get("type"), "%" + type + "%"));
}
return spec;
}In this example:
- We start with an empty
Specification. - We conditionally add criteria to the
Specificationbased on which parameters are provided. - The
criteriaBuilder.likemethod creates aLIKEclause for partial matching.
You can then use this dynamically built Specification when querying your repository:
Specification<Animal> spec = buildSpecification(name, type);
Window<Animal> animals = animalRepository.findAll(spec, pageRequest, scrollPosition);This approach allows you to add as many search parameters as needed without hardcoding each possible combination. It keeps your code flexible and easy to maintain.
Let me know if you have any questions or need further assistance!
Summary by CodeRabbit
New Features
AnimalandAnimalResponsemodels to includetype,habitat, andcreatedfields.Bug Fixes
Chores