This is the method I am using with EclipseLink (no mapping file): /** * Returns the table name for a given entity type in the {@link EntityManager}. * @param em * @param entityClass * @return */ public static <T> String getTableName(EntityManager em, Class<T> entityClass) { /* * Check if the specified class is present in … Read more
All named HTML entities are specified in chapter 24 of the HTML standard. The only thing missing from the page are rendered entities, but you can easily create your own copy with the additional information by applying a simple regexp: s/<!ENTITY (\S+)/<!ENTITY \1 &\1;/ Not all entities are named. For many, you need to specify … Read more
You can use a plugin like Eclipse Dali to do the trick for you. You can refer to the documentation, section 3.11 Generating Entities from Tables. I do not know of any specific vendor independent tool to do this, though.
I found it: public function buildForm(FormBuilderInterface $builder, array $options) { $entity = $builder->getData(); $builder->add(‘field’); }
You need to have a class for your composite key: public class CompositeKey implements Serializable { private int column1; private int column2; private int column3; } and then in your entity class use the @IdClass annotation: @Entity @IdClass(CompositeKey.class) public class EntityExample { @Id private int column1; @Id private int column2; @Id private int column3; … … Read more
I suspect that you are running your code outside a transaction so your find and delete operations occur in a separate persistence context and the find actually returns a detached instance (so JPA is right and you ARE deleting a detached object). Wrap your find / delete sequence inside a transaction. Update: Below an excerpt … Read more
I consider having Long is better, as it is more correct to check whether an entity has persistent identity by checking against the null value (in MySQL you can have an ID of value 0). Also some libraries like Spring base(d) on an ID of type Long (by default) in their logic. See this implementation … Read more
Solution In PostgreSQL you have to specify the name of schema like so : @Table(name=”table_name”, schema = “myapp”) ^^^^^^^^^^^^^^^^ Long Story you got this error : org.postgresql.util.PSQLException: ERROR: column user0_.id does not exist because when you create a database in PostgreSQL, it create a default schema named public, so when you don’t specify the name … Read more