ObjectDB ObjectDB

Internal Website Search

81-90 of 140 resultsRefresh

New to Product & Having An Issue

with the use of @Embedded, @EmbeddedId or with my JPQL queries or is this a bug? Any help ... , generating new departmentId. I am looking now at the JPQL query issues, which might indicate

native sql queries

. But since SQL and JPQL are very similar it could be possible in future releases to support "native SQL". But JPQL is preferred so this feature would be in a low priority. Anyway, the expected

Problem with distinct select, order by and equivalent alias/attribute path

from your point of view? Thanks and regards Benjamin Klink bklink Benjamin Klink JPQL restricts ... to generate valid JPQL queries. support Support 1. Even if maybe obsolete because of point 2. I'm

ClassCastException on SELECT NEW ... after UPDATE over Java RMI

Hi, we are using ObjectDB 2.5.4_04 on Linux. Our application, which uses ObjectDb as a DB, exposes a Java RMI interface which allows remote RMI clients to run JPQL queries on the DB. The application ... NEW ...) and UPDATE JPQL queries on the DB via the RMI interface. What we noticed

JPA 2.0 Criteria API: (When) Fully supported ?

implementation creates a JPQL query string for fetching while the JPA 2.0 implementation uses Criteria API ... are not supported in either string based JPQL or criteria queries. support Support

JPA does not seem to be db agnostic

)); return em.createQuery(query).getSingleResult(); } kasavbere kasav A valid JPQL query ... JPQL by supporting queries with no SELECT. support Support

Problems down-casting in WHERE clause

) ((Practice)e).messageList.message is an invalid expression in JPQL because messageList is a List ... expression. Apparently there is no support for your query in JPQL or ObjectDB

JDBC Driver for ObjectDB

, for SELECT queries with JPQL syntax (not SQL, except SQL queries that are also valid in JPQL

[ObjectDB 2.5.5_03] Unexpected exception (Error 990)

with queries (in JPQL or SQL) because expressions are reordered as part of the query optimization. support Support I did some research on this topic. The NULL handling of JPQL or SQL queries is well defined

@Enumerated(EnumType.STRING) annotation inhibits proper execution of IN expressions.

When the following annotation is present on an enum type entity field: @Enumerated(EnumType.STRING) Queries using JPQL IN expressions on this field won't work correctly anymore. This issue has been described in forum post 1254 (JPA JPQL WHERE clause for IN :variable not working if variable

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

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.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
  4. View or post in the forum
  5. Search or file an issue
  6. Contact support