1. Empty Join Table resulting from JPA ManyToMany stackoverflow.comI have an application in which I am trying to implement ManyToMany relation between 2 entities using Hibernate as my JPA provider. The example I am trying is an uni-directional one, wherein ... |
2. Hibernate: saving parent alone when child is empty stackoverflow.comI have parent and child tables. parent has set of children. these two tables have one to many relationship. in hbm i mapped one-to-many. my requirement is when children size is ... |
3. Hibernate Many-to-many association: left hand side collection contains elements, but right hand side collection is empty stackoverflow.comI got a problem with a many to many association in my persistence layer. My scenario is the following: A user can has several roles and a role can have several user ... |
4. How to query for record with empty ManyToMany association? forum.hibernate.orgI have two tables, Org and Project, linked by a many-to-many association. I want to find all Orgs with no associated Project. I'm trying to use Criteria for efficiency and safety, but it's not working. So far I've tried: Code: Criteria org = session.createCriteria(Org.class); org.add(Restrictions.eq("projects", ... |
5. map of strings that might be empty strings ("") -& forum.hibernate.orgHello! In going from hibernate version 1 to 2 we have encountered the change that maps may no longer contain null values. In our application we have several maps that contain Strings, and using Oracle (9i) as a database causes empty strings ("") to be stored as NULL values; meaning that we have a problem. Empty strings are very valid in ... |
6. empty maps for returnMaps() on many-to-many associations forum.hibernate.orgDear All, I am having Problem with returnMaps function for many-to-many associations. The following code never returns the map with the "dv" alias : (though it works ok if I transform it into a one-to-many association) crit = session.createCriteria(Product.class).add( Expression.eq("id", _idProduct)); List list = crit.createCriteria("divis", "dv") .add(Expression.like("libl", "Div%")) .setResultTransformer(Criteria.ALIAS_TO_ENTITY_MAP) .list(); Iterator iter = list.iterator(); listDivis = new ArrayList(); while (iter.hasNext()) { ... |
7. empty Collection by right mapping forum.hibernate.orgI use hibernate2 (net.sf.hibernate.dialect.DB2390Dialect) with COM.ibm.db2.jdbc.app.DB2Driver and have very easy case: one table (parent) have composite-id with 3 columns: 18-langht String, integer and short second (child) Table have composite-id with 4 columns (tree from parent and addition short ) I define relationship only in parent mapping (child cant live without parent) |
8. Set Element Collection Mapping - Set retrieved is empty forum.hibernate.org |
9. Hibernate puts empty object as Map key forum.hibernate.orgnet.sf.hibernate.collection.Map //...line 202, code trimmed for clarity public Object readFrom(....){... Object index = persister.readIndex( rs, getSession() ); // the index (key) is hollow, and so map.put uses a zero hashcode! map.put(index, element); return element; } |
10. many-to-many mapping returns empty set forum.hibernate.orgHello all! I am trying to do something extremely easy (as I read from the manuals) but it seems that I cannot achieve it. I am trying to create a many-to-many mapping between to tables. A) I have a table called users: Code: mysql> select * from users; +----+----------+----------+ | id | username | password | +----+----------+----------+ | 1 | ... |
11. annotations and MAP mapping, column for map-key still empty forum.hibernate.org@Entity @Inheritance(strategy=InheritanceType.SINGLE_TABLE) @DiscriminatorColumn(name="value_type", discriminatorType=DiscriminatorType.STRING ) @Table(name="house_property_value") @javax.persistence.SequenceGenerator( name="seq_house_property_value", sequenceName="s_house_property_value", allocationSize=1 ) public abstract class HousePropertyValue implements Serializable { @Column(name = "value_key") private String valueKey; @ManyToOne (fetch = FetchType.LAZY, cascade = CascadeType.ALL) @JoinColumn(name = "fk_house_id", referencedColumnName = "id") private House house; ... public String getValueKey() { return valueKey; } public void setValueKey(String valueKey) { this.valueKey = valueKey; } @Transient public abstract Object ... |
12. In a parent- child relationship i get an empty child set forum.hibernate.org// transaction already started A aObj= new A(); aObj.setBSet(new HashSet()); session.saveOrUpdate(aObj); session.flush(); B bObj= new B(); bObj.setA(aObj); session.saveOrUpdate(bObj); session.flush(); Long idA= aObj.getId(); // transaction already finished // some other code (for example code from an struts action) // transaction already started A aObjReturned= session.get(A.class, idA); if (aObjReturned.getBSet().size()== 0) System.out.println("EMPTY SET !!!!!!!!!!!!!!!!"); // transaction already finished |
13. mapped collection is always empty forum.hibernate.orgHello, I have problem with collection mapping in Hibernate 3.3.1.GA. I have two database tables: user(id:number, username:varchar2, pass:varchar2) and userpermission(user_id:number, permission:varchar2). In my application I have entity User with property Set |
14. Mapping table is empty forum.hibernate.orgBeginner Joined: Fri Mar 21, 2008 8:07 pm Posts: 23 Question: Why is person_emails empty once PopulateData.afterPropertiesSet() runs? Database contents after PopulateData.afterPropertiesSet() runs: Code: mysql> select * from person_emails; Empty set (0.00 sec) mysql> select * from emails; +----+---------------------+-------------+----------+----------------+ | id | created | description | name ... |