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4

Compare old and new schema

without entity classes in the classpath but the metamodel is empty. How does your explorer get to metamodel
4

Should derived fields of an EmbeddedId be manually maintained by app code?

; @Basic protected java.lang.Integer lastInstanceInMap; protected EContainer() { // Empty
4

Mapped (Inverse) LAZY @OneToMany vs. Unmapped LAZY @OneToMany

list gives null and the unmapped list gives an empty list [], when DO_VIEW_BEFORE_CLOSE = false. webel
4

Can't get arraylist/vector type attributes

the Vector dissapears and I get an empty vector. Something weird happens, if BEFORE closing
4

Fetching Collections Puzzle

empty - but as soon as your application accesses its content (e.g. by invocation of the size method
4

Type xxx is not found (error 301)

The error: Type User is not found (error 301) occurs when I query the db for a type before any instances of that type have been persisted, e.g.: return em.createQuery ("SELECT a FROM User a").getResultList (); What I was expecting was an empty list, not an error. Is there some enhancement
4

JPA - ExceptionInInitializerError when creating EntityManager

(); } //Empty Constructor public void Main() { } public static void main(String[] args
4

can't get HashMap out of the database

I'm trying to persist an Entity containing a HashMap. It stores the data in the database OK, but the map is always empty when I get the entity out of the database again. I've reproduced this problem in a simple variation of the Guestbook tutorial: Guest class: ===================== @Entity
4

type.loader java.lang.ClassNotFoundException

- so please check if you still see these exceptions in lower logging level (e.g. info). The empty
0

Problem with JOIN and inheritance

Hello, Please run this query on the attached DB: SELECT DISTINCT $1 FROM com.quasado.serviceplaza.customer.VendorCustomer $1 JOIN $1.qubletFRAGMENTMAP $2, com.quasado.foundation.warehouse.contract.customer.CustomerContractsFragment $3 WHERE ((NOT (($2=$3) AND ($3.contracts IS EMPTY

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Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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