I have the following document:
#Document(collection = "decision_analysis")
public class DecisionAnalysis implements Serializable {
#Id
private String id;
...
}
I need to delete multiple MongoDB documents via List<String> decisionAnalysisIds
How to properly write Spring Data MongoDB repository method in order to do it?
The following doesn't work :
void deleteByIds(List<String> decisionAnalysisIds); - error: No property ids found for type DecisionAnalysis! Did you mean 'id'?
void deleteById(List<String> decisionAnalysisIds); - works, but delete only one document
Use the in clause like this:
void deleteByIdIn(List<String> ids);
Related
We have model class saved in Redis as mentioned below:-
#Data
#NoArgsConstructor
#AllArgsConstructor
#RedisHash("book")
public class Book implements Serializable {
private static final long serialVersionUID = 2208852329346517265L;
#Id
private Integer bookID;
#Indexed
private String title;
#Indexed
private String authors;
private String averageRating;
private String isbn;
private String languageCode;
private String ratingsCount;
private BigDecimal price;
}
We have title and authors as our indexed property.
Now we wanted to search all the records from Redis by passing title and a list of authors using the spring crud repository as mentioned below.
public interface BookSpringRepository extends CrudRepository<Book, String> {
List<Book> findAllByTitleAndAuthors(String title, List<String> authors);
}
Service layer:-
#Override
public Optional<List<Book>> searchBooksByTitleAndAuthorNames(String title, List<String>
autherNames) {
return Optional.ofNullable(bookSpringRepository.findAllByTitleAndAuthors(title,
autherNames));
}
Here we are getting below exception
Unable to fetch data from Spring data Redis cache using List of Integer or
String.
Getting error while fetching - "Resolved
[org.springframework.core.convert.ConversionFailedException: Failed to convert from type
[java.lang.String] to type [byte] for value 'Ronak';
nested exception is java.lang.NumberFormatException: For input string: "Ronak"]."
We would not want to convert the list of string/integer to byte as it is a time-consuming process and as we tried took so much amount of time. Also when the results are retrieved we will again have to convert back to normal integer or string values.
The other option is to loop through the list and pass a single value at a time to the Redis crud repository and this time Redis crud repository is happy but that will be a loop call to Redis and network latency.
We cannot add ID attributes on authors' property as these can be duplicate records.
Does the spring crud repository support the LIKE query in search that way we can create a unique id having these authors' names and make put ID annotation on that new derived property to search the records using spring crud repository using LIKE or contains kind of query.
Any suggestions here are highly appreciated!!
Try to add serialization to your redis key and value. This might help :
https://medium.com/#betul5634/redis-serialization-with-spring-redis-data-lettuce-codec-1a1d2bc73d26
I have a scenario where I am consuming an event and saving the details in the DB. Now the record that is being stored in the database has the id field autogenerated #GeneratedValue(strategy = GenerationType.IDENTITY).
In my test case I need to check if data is getting stored in the DB or not and is as per expectation.
But I am not sure how will I do findById() of SpringBoot Crud/JPA Repository since I do not know what value got generated.
Any help would be appreciated.
Take a look at save method from CrudRepository interface. Spring executes this method in transaction and after its completion Hibernate will generate identifier in returned entity.
Suppose your entity and repository looks as following:
....
public class SomeEntity {
#Id
#GeneratedValue
private Long id;
private String name;
public SomeEntity(String name){
this.name = name;
}
....
}
public interface SomeRepository extends CrudRepository<SomeEntity, Long> {
}
After saving entity:
SomeEntity someEntity = someRepository.save(new SomeEntity("Some entity"));
someEntity.getId() will contain actual record id which can be used further in your tests.
I think you are looking for annotation #DirtiesContext .
It is a Test annotation which indicates that the ApplicationContext associated with a test is dirty and should therefore be closed and removed from the context cache. - javadoc
Read Section 9.3.4 - Here
Check - Example ans below as well:
#Test
#DirtiesContext
public void save_basic() {
// get a course
Course course = courseJpaRepository.findById(10001L);
assertEquals("JPA ", course.getName());
// update details
course.setName("JPA - Updated");
courseJpaRepository.saveOrUpdate(course);
// check the value
Course course1 = courseJpaRepository.findById(10001L);
assertEquals("JPA - Updated", course1.getName());
}
BTW - how you can get the id : simply via getter method from the return type of save
EmployeeDetails employeeDetails = emaployeeService.saveEmployeeDetails(employee);
int temp = employeeDetails.getID()
Related Post : Here
I'm just getting started with elasticsearch with spring which is both technologies which are completely new to me. I have uploaded data to an elasticseach index with logstash and I can search it successfully using kebana. However when I try to return from an index to a webpage using spring it only returns empty json-objects, but the right amount of empty objects. Did I upload the data incorrectly or is something wrong with my code? I don't understand why this is happening and would appreciate any help I can get. You can find some code below.
Code for type:
#Document(indexName="usmgbg_index", type="usmgbg_type")
public class Usmgbg {
#Id
private String ID;
private String Source, Name, Profession, Country, FileName, LastModified, OwnerID;
}
Repository:
#Repository
public interface UsmgbgRepository extends ElasticsearchRepository<Usmgbg, String>{}
Controller:
#RestController
public class UsmgbgController {
#Autowired
private UsmgbgRepository repository;
#GetMapping("usmgbg/findall")
public List<Usmgbg> findAllCustomers() {
List<Usmgbg> items = new ArrayList<>();
repository.findAll().forEach(items::add);
return items;
}
}
The output I'm getting from findAllCustomers looks like:
[{},{},{},{},....]
I realize this is an old question but I had the same issue (maybe for a different reason) and I solved it by adding getters and setters in the model.
Iterable is returned from findAll().
If you want to get list you should get content first.
Change
#Repository
public interface UsmgbgRepository extends
ElasticsearchRepository<Usmgbg, String>{
Page<Usmgbg> findAll();
}
And then
repository.findAll().getContent().forEach(items::add);
Or fix your code to iterate over the results.
Another solution is to use search method in ElasticsearchRepository using QueryBuilders API.
Iterable<Usmgbg>=
repository.search(QueryBuilders.matchAllQuery);
Adding my experience
spring-data requires getters to follow the POJO naming, i.e: getSomething()
so it did not work (spring-data did not send any fields to ElasticSearch when saving the #Document, resulting in an empty _source in ES) when having Lombok #Accessors(fluent = true), as it removes the get prefix on getters ...
My Repository Method Query cannot parse a property name that comes after the OrderBy, but it can if it follows the findBy or findAllBy. The attribute in my entity that is giving me issues is zIndex
Entity Class
#Entity
public class DisplayLayer
{
#Id
#Column(name="DISPLAY_LAYER_ID")
private Long id;
#ManyToOne(cascade = CascadeType.ALL)
#JoinColumn(name="DISPLAY_CONTAINER_ID")
private DisplayContainer displayContainer;
#Column(name="NAME")
private String name;
#Column(name="Z_INDEX")
private Long zIndex;
#Column(name="DESCRIPTION")
private String description;
// Getters & Setters
}
Repository Class
public interface DisplayLayerRepository extends BaseRepository<DisplayLayer, Long>
{
// This one method query works just fine
public List<DisplayLayer> findByZIndex(Long pZIndex);
// These two throw the same error:
// Unable to locate Attribute with the the given name [ZIndex]
//
// public List<DisplayLayer> findAllByOrderByZIndexAsc();
// public List<DisplayLayer> findByDisplayContainerIdOrderByZIndexAsc(Long pDisplayLayerId);
}
So in my first method query, when OrderBy is not used, it correctly parses it as [zIndex], but when it follows the OrderBy for some reason it capitalizes the z: [ZIndex].
Is this a known issue, or am I doing something wrong?
EDIT
What makes me think there might be a bug with the parser is that if I update zIndex to IndexZ in my entity and then change my query methods from OrderByZIndex to OrderByIndexZ everything works.
This solution is not ideal though as the database table is Z_INDEX and that has a specific meaning when talking about layering of graphics.
Yes there is a bug but there is a simple workaround, please try :
displayLayerRepository.findAll(Sort.by(Sort.Order.desc("zIndex").ignoreCase()));
I suppose DisplayLayerRepository extends JpaRepository.
It's similar when you use parameters in your findBy method. Define in your repository empty method :
public List<DisplayLayer> findByDisplayContainerId(Long pDisplayLayerId, Sort sort);
Then you can call it by :
displayLayerRepository.findByDisplayContainerId(1L, Sort.by(Sort.Order.desc("zIndex").ignoreCase()));
You can use JpaSort in query. As in your case, it looks something like this:
Sort sort = JpaSort.unsafe(Sort.Direction.ASC, "zIndex");
List<DisplayLayer> zIndexes = displayLayerRepository.findByZIndex(pZIndex, sort);
and your query in Repository will look like this:
public List<DisplayLayer> findByZIndex(Long pZIndex, Sort sort);
I am using Spring Data's Rest Repositories from spring-boot-starter-data-rest, with Couchbase being used as the underlining DBMS.
My Pojo for the object is setup as so.
#Document
public class Item{
#Id #GeneratedValue(strategy = UNIQUE)
private String id;
#NotNull
private String name;
//other items and getters and setters here
}
And say the Item has an id of "xxx-xxx-xxx-xxx" and name of "testItem".
Problem is, that when I want to access the item, I need to be accessible by /items/testItem, but instead it is accessible by /items/xxx-xxx-xxx-xxx.
How do I get use its name instead of its generated id, to get the data.
I found out the answer to my own question.
I just need to override the config for the EntityLookup.
#Component
public class SpringDataRestCustomization extends RepositoryRestConfigurerAdapter {
#Override
public void configureRepositoryRestConfiguration(RepositoryRestConfiguration config) {
config.withEntityLookup().forRepository(UserRepository.class).
withIdMapping(User::getUsername).
withLookup(UserRepository::findByUsername);
}
}
Found the info here, though the method name changed slightly.
https://github.com/spring-projects/spring-data-examples/tree/master/rest/uri-customization
If you want query the item by name and want it perform as querying by id,you should make sure the name is unique too.You cant identify a explicit object by name if all objects have a same name,right?
With jpa you could do it like:
#NotNull
#Column(name="name",nullable=false,unique=true)
private String name;