Database Operation Using JPA
Questions: The code works fine but as I tried to add commit command the code start giving exception. Any suggestion will be helpful. The line transaction.commit(); is causing problem. public class Mov...
Tag Archives: jpa
Access sequence from another schema in JPA
Questions: I have the “master_seq” defined in 2 schemes. I have a table in schema_2 say table_2. Schema_1 has been provided insert grant on table_2 and its master_seq. The problem is, I am...
Spring Data JPA Page and JSON with Gson
Questions: I use spring mvc with xml configuration with dependency: <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <v...
bi-directional one-to-one in hibernate spring jpa
Questions: class Transaction implements Serializable { @OneToOne(mappedBy = "transaction") @JoinColumn(name = "invoice_id", nullable = false) private InvoiceDetails invoice; // some other columns, get...
WSO2 and JPA configuration (JNDI)
Questions: I am trying to use JPA through WSO2 ESB. I have my entities in Module A, which is bundled to Module B, because Module A generates JAR and in WSO2 OSGi modules should be used. In Module A I ...
Update column to default value without specifying it in Spring Data JPA
Questions: I wish to set default value for a given column defined in DB, as explained here, without specifying it from my application. What I wish for Oracle JDBC to generate is the following; UPDATE ...
i am trying to select 2 columns from db through jpa but getting error saying “java.sql.SQLException: No such column :id&rd...
Questions: i am trying to display 2 columns data from db instead of * and i have used bellow query but it is not working. @Query(value = "Select empid,empname from employee group by empid", nativeQuer...
How to filter/order by pivoted value using JPA criteria API?
Questions: Let’s say we have such entities (skipping getters/setters, visibility parameters, annotations etc.) class TargetEntity { Integer id; List <Attribute> attributes;// one to many }...
Spring JPA – entity with two primary key
Questions: There are 3 tables Label, Text and Language: @Entity public class Label { @Id @GeneratedValue private Long id; @ManyToOne @JoinColumn(name = "text_id") private Text text; } Then text: @Enti...
Mapping of Stored Procedure resultset to different/embedded Java POJO in Spring JPA
Questions: I want to understand if we can directly map our stored procedure resultset to nested java POJOs directly. I am having following POJO structure: public class Person { private PersonInformati...
