1. How do I join tables on non-primary key columns in secondary tables? stackoverflow.comI have a situation where I need to join tables on an object in an ORM class hierarchy where the join column is NOT the primary key of the base class. ... |
2. Table with no precise Primary Key Columns forum.hibernate.orgI have an audit log table for maintaing history information related to the application with the foll. columns in Oracle. LOOKUP_TYPE VARCHAR2(40) NOT NULL, MODIFIED_BY VARCHAR2(30) NOT NULL, MODIFIED_DATE DATE NOT NULL, OLD_NAME VARCHAR2(100), NEW_NAME VARCHAR2(100), OLD_VALUE VARCHAR2(100), NEW_VALUE VARCHAR2(100) There is no precise primary key here. Functionally LOOKUP, MODIFIED_BY, MODIFIED_DATE and 2 of the foll. columns (OLD_NAME, NEW_NAME, OLD_VALUE, NEW_VALUE) ... |
3. Updating primary key column(s) using Hibernate forum.hibernate.organthony wrote: it's not possible, do it in a DAO method implemented using jdbc but be carefull with first and second level caches I am using a Stateless Session Bean in my application. And, retrieving the POJO in one EJB method and passing it on directly to the web-tier. The web-tier updates the POJO and sends it back to another EJB ... |
4. How to do automatic generation of a non primary key column ? forum.hibernate.orgI have a table lets say with following fields: id (which is primary key and of identity type) id2 (which is a normal column with lets say int data-type) In the mapping xml for this table, I am using "identity" algorithm for automatic generation of "id" column. Now the primary key "id" will be generated automatically whenever a new row is ... |
5. Primary Key with more than one column forum.hibernate.orgHibernate version: 3.0 I fear I have overlooked the solution in the documentation or maybe I haven't understood the concept of Hibernate. I have a table-structure with a lot of tables having primary keys with more than one column. eg: Table person: firstName lastName dayOfBirth street zip city with primary key firstName, lastName and dayOfBirth and a table companyCar with a ... |
6. many-to-one on non-primary-key column using annotation? forum.hibernate.orgpublic class FirmUser implements Serializable{ private Login logn; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "username") public Login getLogin() { return login; } public void setLogin(Login login){ this.login = login; ... |
7. Does the primary key have to be the first column in the tabl forum.hibernate.orgHi there, just trying to plug hibernate into some legacy tables and have come a bit unstuck with the primary key. In one of the tables the primary key is the second column in the table. Now when I create the objectname.hbm.xml I have to declare the ID before the property columns. This seems to imply that the primary key (or ... |
8. How to refer unique columns, which are not primary keys forum.hibernate.orgHI, Kindly suggest me a way using hibernate annotations, to refer unique column names from some other entity.e.g public class A implements Serializable { private String id; // this is the primary key for this entity private String columnA; private String columnB; // in this entity i have annotated combination of "columnA" and "columnB" as unique } Now i want to ... |
9. Column Named ID is not Primary Key - SQL error forum.hibernate.orgHello everyone, i have a tiny problem that puzzles me all day long : Java Object : /** * @return the localKey * @hibernate.id generator-class="increment" column="localKey" */ public String getLocalKey(){ return localKey; } /** * @return the id * @hibernate.property column="id" */ public String getId() { return id; } --- as you can see, the primaryKey of the Database Table is ... |
10. Primary key composed by several columns forum.hibernate.org |
11. Primary Key with a Hibernate generated ID and another column forum.hibernate.orgI am a new Hibernate (v3) user. Having checked the internet (including this forum) and the Hibernate in Action book, I'm still unsure if this scenario can be handled via a Hibernate mapping file. Scenario: The Oracle database table we are mapping to has a primary key that includes two columns: one id that should be generated (e.g. Hibernate's sequence generator), ... |
12. Primary Key with a Hibernate generated ID and another column forum.hibernate.orgI am a new Hibernate (v3) user. Having checked the internet (including this forum) and the Hibernate in Action book, I'm still unsure if this scenario can be handled via a Hibernate mapping file. Scenario: The Oracle database table we are mapping to has a primary key that includes two columns: one id that should be generated (e.g. Hibernate's sequence generator), ... |
13. Joining entities on non-primary key columns forum.hibernate.orgI'm trying to join two tables, Project and Owner, that have a many-to-one relationship (Project has one Owner. An Owner has many Projects). The column that joins these two tables is unique, but not a primary key. In effect, I need to do the equivalent of the SQL query: SELECT ... FROM PROJECT P LEFT JOIN OWNER O ON P.ownername = ... |
14. not using a auto incrementing primary key on a column forum.hibernate.org |
15. Define a Primary key with more than one column forum.hibernate.orgHi, I have a Groups table, which contains name and users id who has defined this group. However, the same user can define one and only one group with the same name. This way I need to define a contstraint that combination of name and user_id should be unique i.e multiple entries with same name and user id should not be ... |
16. How can I implement outer join on non primary key column ? forum.hibernate.org |
17. Update a column that is a member of a compound primary key forum.hibernate.orgI have a 3 column primary key, ITEM_ID, END_DATE and MEMBER_ITEM_ID. This table contains membership information that is historical, is there a way to update the END_DATE when a member is removed. Currently updating the END_DATE and persisting the entity results in another record added to the table. Is there a way to update a column that is a member of ... |