spring-data

问题 I am using following dependencies - <dependency> <groupId>org.springframework</groupId> <artifactId>spring-framework-bom</artifactId> <version>4.1.3.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-jpa</artifactId> <version>1.8.0.M1</version> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-rest-webmvc</artifactId> <version>2.3.0.BUILD-SNAPSHOT<

问题 I have configured a Spring Data Repository (mongoDB) and Author entity as following : Repository : public interface AuthorRepository extends MongoRepository< Author, Long > { Iterable<Author> findByFirstName( String personName ); Iterable<Author> findByFirstNameLike( String personName ); Iterable<Author> findByFirstNameNotLike( String firstName ); } Entity Class : @Document( collection = "author" ) @Data public class Author { @Id private String id; private String firstName; //.. } I'm able to

问题 I have below data :- Product Reason Qty Pepsi IN 10 Pepsi Out 2 Pepsi In 15 Pepsi Out 5 Coke IN 100 Coke Out 20 Coke In 35 Coke Out 25 and from JPA Specification i want to execute below query something like below :- select * from ( (select SUM(QTY) from stock where reason like 'IN') as INDATA - (select SUM(QTY) from stock where reason like 'OUT') as OUTDATA ) as TBL; result will be below :- Product Qty Pepsi 18 Coke 90 I am using JPA Specification for the first time and i dont no idea how to

问题 I'm having a trouble with mapping an object Employee to my database when invoking a default method in my Employee repository. I get an argument type mismatch when invoking an employeerepository.findall() method Employee repository package org.jarivm.relationGraph.repositories; import org.jarivm.relationGraph.domains.Employee; import org.jarivm.relationGraph.domains.Project; import org.springframework.data.neo4j.annotation.Query; import org.springframework.data.neo4j.repository.GraphRepository

问题 I don't know if I am doing something wrong or it is a bug. I have the following code: Query criteria = new Query(Criteria.where("locationTime").gte( "date-time")); criteria.fields().exclude("friends"); NearQuery query = NearQuery.near(point).maxDistance(maxDistance) .num(limit).query(criteria); GeoResults<Profile> result = mongoTemplate .geoNear(query, Profile.class); I am executing the query and profiles near by retrieved correctly according to distance and the "locationTime" criteria but it

问题 Unable to save child object reference. Employee parent object contains the child employee_detail which also has a @ManyToOne defined to save Address object. Table structure EMPLOYEE ID BIGINT(20) NOT NULL AUTO_INCREMENT NAME VARCHAR(100) NOT NULL EMPLOYEE_DETAIL ID BIGINT(20) NOT NULL AUTO_INCREMENT EMPLOYEE_ID BIGINT(20) NOT NULL ADDRESS_ID BIGINT(20) NOT NULL Entities @Entity @Table(name = "employee") public class Employee { @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name =

问题 I use Google App Engine and Spring Data JPA. @Entity public class Feed { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Key id; private String name; private String url; private Date created; public Feed() { } public Feed(String name, String url) { this.name = name; this.url = url; this.created = new Date(); } // Getter and Setter } @Entity public class News { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Key id; @ManyToOne private Feed feed; private String

问题 I'm trying to write a "Hello, World" with Spring Data Neo4j in a standalone app. It runs and actually creates the Neo4j database, but my @Autowired repo is not being initialized. I suspect the problem is in my main class, but I don't know what to try. Unsurprisingly, almost all the Spring tutorials I've found are about web apps. What am I doing wrong? config bean: @Configuration @EnableNeo4jRepositories(basePackages = "test2") public class ConfigBean extends Neo4jConfiguration { private

问题 For Some reason, I am not able to get the combination of Hibernate Inheritance strategy=InheritanceType.JOINED & onetoMany working. Following are the entities. @Entity @Inheritance(strategy=InheritanceType.JOINED) @DiscriminatorColumn(name="OBJECT_TYPE") public abstract class ExamObject { @Id @GeneratedValue(strategy=GenerationType.AUTO) private Long id; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "examid", nullable = false) private Exam exam; } @Entity @DiscriminatorValue("Q")

问题 Context: I used queryDSL in API controller which binds query to the database get. Currently, I have two tables with OneToOne relationship, and we can call them Table A and Table B. If there are 3 rows in A and 2 rows in B, when I get list A with some conditions, and the queryDSL will generate query SQL like A CROSS JOIN B WHERE A.id=B.a_id , but it will miss one item in A. Thus, I am going to implement custom repository to support change join type when generating the SQL statement. The