In JPA we can create indexes for the entity using annotations like -
#Table(indexes = #Index(columnList = "firstName"))
Do we have a similar way of creating indexes for the Cosmos DB?
With Spring data cosmos, you can define custom indexing policy using #CosmosIndexingPolicy annotation for your container.
Example:
#Container(containerName = "users")
#CosmosIndexingPolicy(
includePaths = {
"/name/?"
},
excludePaths = {
"/*"
}
)
public class UserDocument {
#Id
#GeneratedValue
#PartitionKey
private String id;
private String name;
}
Javadoc for more reference: https://azuresdkdocs.blob.core.windows.net/$web/java/azure-spring-data-cosmos-core/3.0.0-beta.1/index.html?com/azure/spring/data/cosmos/core/mapping/CosmosIndexingPolicy.html
Related
What is the best way to implement soft delete in spring data and on delete that should also trigger hibernate events
There is an example on how to implement soft deletes in the Hibernate ORM documentation:
#SQLDelete(
sql = "UPDATE person SET valid = false WHERE id = ? "
)
public static class Person {
#Id
#GeneratedValue
private Long id;
private String name;
...
}
I'd like to find all Offer documents by Offer.ProductProperties.brand:
#Document(collection = "offers")
public class Offer {
#Id
private String id;
#NotNull
#DBRef
private ProductProperties properties;
ProductProperties:
#Document(collection = "product_properties")
public class ProductProperties {
#Id
private String id;
#NotNull
#NotEmpty
private String brand;
Service:
Flux<ProductProperties> all = productPropertiesRepository.findAllByBrand(brand);
List<String> productPropIds = all.toStream()
.map(ProductProperties::getId)
.collect(Collectors.toList());
Flux<Offer> byProperties = offerRepository.findAllByProperties_Id(productPropIds);
But unfortunately byProperties is empty. Why?
My repository:
public interface OfferRepository extends ReactiveMongoRepository<Offer, String> {
Flux<Offer> findAllByProperties_Id(List<String> productPropertiesIds);
}
How to find all Offers by ProductProperties.brand?
Thanks!
After reading some documentation found out that You cannot query with #DBRef. Hence the message
Invalid path reference properties.brand! Associations can only be
pointed to directly or via their id property
If you remove DBRef from the field, you should be able to query by findAllByProperties_BrandAndProperties_Capacity.
So the only ways is how you are doing. i.e. Fetch id's and query by id.
As I said in the comment, the reason it is not working is because return type of findAllByProperties_Id is a Flux. So unless u execute a terminal operation, you wont have any result. Try
byProperties.collectList().block()
#JsonSerialize
#Document(collection = "fence")
#CompoundIndexes({
#CompoundIndex(name = "loc_groupId_idx",
def = "{ 'loc': 2dsphere, 'groups.groupId': 1 }",
unique = false) })
public class GeofenceMongoVO {
public GeofenceMongoVO() {}
#Id
private String fenceId;
#Field
private Long customerId;
#Field
private String fenceName;
#Field
private Byte type;
This is how I tried to ensure a compound index on a geospatial field and a field of a child document(groupId). But this is not working unfortunately. Is there a way by which I can ensure 2dsphere index from java code via annotations?
As of Spring Data MongoDB 1.10.10.RELEASE, you can annotate any field, whether it be at the document root or in a subdocument with:
#GeoSpatialIndexed(type = GeoSpatialIndexType.GEO_2DSPHERE)
private GeoJsonPoint myGeometry;
I'm not sure if it can be done with annotations yet, but I found a blog post here where they do it with an ensureIndex. Something like th
#Autowired
MongoTemplate template;
public void setupIndex()
{
template.indexOps(Location.class).ensureIndex( new GeospatialIndex("position") );
}
I have an entity ProjectCycle mapped to mongo DB collection ProjectCycle. I am trying to retrieve 2 fields, _id and Status. I am able to retrieve both like the following
#Document(collection="ProjectCycle")
public class ProjectCycle {
#Id
private String id;
#Field("Status")
private String status;
//getters and setters
}
Application.java
Query query = new Query();
query.fields().include("Status");
Criteria criteria = new Criteria();
criteria.and("_id").is("1000");
query.addCriteria(criteria);
Iterable<ProjectCycle> objectList = mongoOperations.find(query, ProjectCycle.class);
for(ProjectCycle obj : objectList) {
System.out.println("_id "+obj.getId());
System.out.println("status "+obj.getStatus());
}
Output
_id 1000
status Approved
But, the problem is when i use an Entity with field private DBObject basicDbObject; instead of private String status; i am getting value as null instead of Approved
I have tried like the following
public class ProjectCycle {
#Id
private String id;
private DBObject basicDbObject;
//getter & setter
}
What I am trying to achieve is that, the collection 'ProjectCycle' is very large and creating a POJO corresponding to it is quiet difficult. Also I am only reading data from mongoDB. So creating the entire POJO is time wasting and tedious.
How I can achieve mapping between any field/fields from mongo Collection to entity?.
Will it be possible to create a Map<String, BasicDBObject> objectMap; to fields returned from query? I am using Spring-data-mongodb for the same.
Version details
Spring 4.0.7.RELEASE
spring-data-mongodb 1.7.2.RELEASE
Try mapping your query like below.
Iterable<BasicDBObject> objectList = mongoOperations.find(query, BasicDBObject.class, collectionname);
for(BasicDBObject obj : objectList) {
System.out.println("_id "+obj.get("id"));
System.out.println("status "+obj.get("status"));
}
I'm currently fighting with the spring-data-elasticsearch API. I need it to work on an alias with several indexes pointing on it.
Each indexes have the same types stored, but are juste day to day storage (1rst index are monday's resulsts, second are tuesday's resulsts....).
Some of the ElasticsearchRepository methods don't work because of the alias. I currently managed to do a search (findOne() equivalent) but I am not able to update an entity.
I don't know how to achieve that, I looked to the documentation and samples.. but I'm stuck.
My repository
public interface EsUserRepository extends ElasticsearchRepository<User, String>
{
#Query("{\"bool\" : {\"must\" : {\"term\" : {\"id_str\" : \"?0\"}}}}")
User findByIdStr(String idStr);
}
My Entity
#Document(indexName = "osintlab", type = "users")
public class User
{
// Elasticsearch internal id
#Id
private String id;
// Just a test to get the real object index (_index field), in order to save it
#Field(index = FieldIndex.analyzed, type = FieldType.String)
private String indexName;
// Real id, saved under the "id_str" field
#Field(type = FieldType.String)
private String id_str;
#Field(type = FieldType.String)
private List<String> tag_user;
}
What I tested
final IndexQuery indexQuery = new IndexQuery();
indexQuery.setId(user.getId());
indexQuery.setObject(user);
esTemplate.index(indexQuery);
userRepository.index(user));
userRepository.save(user))