spring-data-jpa

问题 Using Query DSL with hibernate (Spring Data JPA) to build a query like so if( bankId != null ){ query.where( coopMember.personId.bankAccountId.isNotNull().and( coopMember.personId.bankAccountId.bankBranch.bankId.eq(bankId)) ); } return query.fetch(); The logic here is simple: if there is a bank account associated with a person, filter the results by bank id. The BankAccount entity has a BankBranch which holds bankId integer value. A CoopMember entity may or may not have a BankAccount Problem

问题 I have a test that is testing parts of a spring application. It is using SpringRunner and the annotaion @SpringBootTest so it is starting a full spring server. Problem is that the test is being executed by a server that does not have access to the database, so I am getting a lot of connection timeouts that is slowing down the test. The connection issues in itself isn't really a problem as the tests are mocking the calls to the database, and so they are not relying on the connection being

问题 Using Query DSL with hibernate (Spring Data JPA) to build a query like so if( bankId != null ){ query.where( coopMember.personId.bankAccountId.isNotNull().and( coopMember.personId.bankAccountId.bankBranch.bankId.eq(bankId)) ); } return query.fetch(); The logic here is simple: if there is a bank account associated with a person, filter the results by bank id. The BankAccount entity has a BankBranch which holds bankId integer value. A CoopMember entity may or may not have a BankAccount Problem

问题 Currently, it has been used Spring Boot application with the custom Data source configuration like this one Before @SpringBootApplication(exclude={DataSourceAutoConfiguration.class, MongoAutoConfiguration.class}) public class SpringBootAppInitializer { public static void main(String[] args) { System.setProperty("java.awt.headless", "false"); SpringApplication.run(SpringBootAppInitializer.class); } } @Bean public BasicDataSource getDataSource() { BasicDataSource basicDataSource = new

问题 Using Spring Dat JPA, I need to query my database and return a range of OrderEntity s based on a startAmt and a endAmt of amounts. I'm not sure if I should map these two variables to entity OrderEntity , as fields in some type of separate class/entity/model, or simply declare them in my native query. Perhaps I should be using a service that implements EntityManager.createNativeQuery() ? Would like to do something like : @Repository public interface OrderRangeRepository extends JpaRepository

问题 I have an Entity like below: @Entity public class Order { @Id private String orderId; @Temporal(TemporalType.TIMESTAMP) @Column(name = "created_at", nullable = false) private Date created; @Temporal(TemporalType.TIMESTAMP) @Column(name = "updated_at", nullable = false) private Date updated; @PrePersist protected void onCreate() { this.created = new Date(); this.updated = this.created; } @PreUpdate protected void onUpdate() { this.updated = new Date(); } } I have to find all the orders that

问题 I am new to using spring boot. I am trying to create a REST API with apache derby as an embedded database but I get this error: "Error creating bean with name 'entityManagerFactory'". pom.xml : http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4.0.0 <groupId>com.restapi</groupId> <artifactId>restApi</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>restApi</name> <description>Demo project for Rest API with spring boot</description> <parent> <groupId>org

问题 I need it to access 2 different schema's in one database(MySQL). I wrote two config classes here: package twodb.webfi.config; import java.util.Properties; import javax.persistence.EntityManagerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration;

问题 Let there be three JPA Entities. A Person and two one-to-many relations to it. When I'm trying to save the Person AD_P_ID and AC_P_ID foreign keys are always null. The expected value for these fields is the person Id. What am I doing wrong? Person.java: This contains one to Many relationships with Account and Address Entity classes: @Entity @Table(name = "A2C_PERSON") class Person implements Serializable { private long id; private List<Account> acs; private List<Address> ads; @OneToMany

问题 I am using spring data jpa with db2. My first set of record is coming. But when i do the next, it is giving me error. I guess it may be because of db2. When I use index 0 it is working fine. But when i use index 1 then it is giving data access exception. On second page I am getting below error my pageable object Pageable pageable = new PageRequest(2, 10, Direction.ASC, "messageId"), because of this 2(As it is mentioning that index should be 0), it is throwing the below error com.ibm.db2.jcc