hibernate-mapping

问题 Can any one please show me an example to update and delete a record in one to one hibernate mapping? I have 2 tables customer and customeraddress. I am able to add record in both tables using following code customerForm.setcustomerAddress(customerAddress); customerAddress.setCustomer(customerForm); getEntityManager().persist(customerForm); Now I want to delete and update the record. @Entity @Table(name="customers") public class Customer { @Id @GeneratedValue(strategy = IDENTITY) @Column(name=

问题 I recently changed my JPA design for that : persistence.xml <?xml version="1.0" encoding="UTF-8"?> <persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"> <persistence-unit name="flightfaq" transaction-type="JTA"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <properties> <property name=

问题 I have this class: @Entity @Table(name = "TOPUP_MESSAGE") public class ReportFee { //... ID & Other Properties @ManyToOne @JoinColumn(name="CONTRACT_ID") private ContractDetail contractDetail; //GETTERS AND SETTERS } and ContractDetail class is like this: @Entity @Table(name = "CONTRACT_DETAIL") public class ContractDetail { //... ID & Other Properties @ManyToOne @JoinColumn(name = "CONTRACT_ID") private Contract contract; //GETTERS AND SETTERS } My Contract class is like this: @Entity @Table

问题 So far I've not seen any examples where the classes are using hibernate mapping. They all seem to use annotations. Would it work if I use mappings to wire the classes? 回答1: It's not possible. The unique way to work with Envers is by annotations. Look: https://hibernate.atlassian.net/browse/HHH-3887 回答2: I wasn't sure if you mean't configure Envers auditing within the hbm files or just add Envers within the application. If you need to configure within hbm, no is not possible as Rafael Zeffa

问题 There is a mapping exception for a particular entity. Cant figure out from where the problem is arising. I checked all the mappings 3 times from start to end. Still i am getting a Mapping Exception. Email to employee is mapped only once. but still it is reporting the error repeated mapping Error is: Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: com.cluster.entity.Email column: EMPLOYEE_ID (should be mapped with insert="false" update="false") at org

问题 I have 2 tables: Accounts and AccountDetailsData. I mapped there are to 2 classes: @Entity @Table(name = "Accounts", schema = "dbo", catalog = "core") public class AccountsEntity { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Integer id; @Basic @Column(name = "status") private String status; @Basic @Column(name = "enabled") private Boolean enabled; @Basic @Column(name = "timestamp") private Timestamp timestamp; @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY,

问题 I am trying to persist my classes but it always throws me this error. This is my hibernate.cfg.xml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <!-- SQL dialect --> <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> <!-- Database connection settings --> <property name=

问题 These are a couple of question, should Spring Roo through reverse engineering adding FetchType.LAZY for Set fields in .aj files or should I do it manually? If FetchType.LAZY is not present at .aj files, I could make it through the queries " SELECT st1 FROM parentTable t1 JOIN FETCH t1.childTable st1" into the select, right ? The point here is that I can add FetchType.LAZY to the files manually (Refactor .aj file > Push In..) and then on .java file (high risk if I want Roo to keep the control

问题 I have two persistence entity: User and UserDetail . They have one-to-one relationship. I use hibernate annotations. But I am getting in my database several objects of user information for one same user. Apparently my knowledge of Hibernate annotations are not so good to solve this problem. User class: @Entity @Table(name = "USER") public class User { @Id @GeneratedValue @Column(name = "ID") private Long id; @Column(name = "NAME") private String name; @Column(name = "PASSWORD") private String

问题 I'm created spring mvc project ,and i want to added model class in to DB(postgres v10) with Hibernate(v5) but when execute program, show error "null value in column "id" violates not-null constraint" I show the important parts of the code in below @Entity @Table(name = "trs") public class infoExcel { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Integer id; private Integer rule_id; private String device_id; private String ts_date; private String ts_time; private String op