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JDO support vs JPA

Hi, I am about to update the JDO metadata in the package.jdo files after moving from ObjectDB 1 to 2. However I found that there is no complete description or guide how the XML metadata should look ... description of XML metadata for ObjectDB ver2 using JDO which I did not find? 2. Is the combined

disabling JDO in objectdb embedded mode

/lib/slf4j-api-1.6.4.jar, URLEntry : file:/usr/local/glassfish/glassfish/domains/dex/applications ... -1.0-SNAPSHOT/lib/javaee-api-6.0.jar, URLEntry : file:/usr/local/glassfish/glassfish/domains/dex ... -> org.glassfish.internal.api.DelegatingClassLoader@43de6a4f AT Thu Jun 02 14:19:14 CEST 2016 BY

mapping file is not being loaded

with the previous hibernate implementation. the java code that interacts with the Persistence api ... - manually listing classes along with setting exclude-unlisted-classes to false. The Metamodel API ... anything else except using the Metamodel API (storing objects, etc)? Does it work? support Support So I changed

Indexing a field results in internal Exception

for why JDO. I have long been a fan of JDO as it's a hugely easer API and gets work done with a lot less metadata. sjzlondon Steve Zara Unfortunately the information in the stack trace is not sufficient ... much metadata in either of them, so you can stay with JPA and just remove the ORM metadata when switching

Criteria Query Selection and Results

The JPA Criteria API interfaces in this group are used for setting the SELECT and ORDER BY clauses and for representing query results as tuples. SELECT Clause Elements The content of the SELECT clause in a criteria query is represented by Selection: Because Selection is a super interface

GROUP BY and HAVING clauses

.currency HAVING COUNT(c) > 1 can be built using the criteria query API as follows: CriteriaQuery


ObjectDB Software develops, markets and supports the ObjectDB Object-Oriented Database Management System (ODBMS). ObjectDB Software is the market leader in providing a very high performance persistence solution for Java, based on the Java Persistence API (JPA) and the Java Data Objects (JDO

createContainerEntityManagerFactory(info, map)

is to be created. Parameters: info - metadata for use by the persistence provider map - a Map ... : EntityManagerFactory for the persistence unit specified by the metadata Since: JPA 1.0

JDO Reference (JavaDoc)

This reference contains the API documentation (similar to JavaDoc) of JDO 2.2. The content is derived from the original JDO documentation with some additions and notes. The most basic JDO types are: All the other JDO types are organized into the following sections:


that is declared in the metadata. Returns: the created instance Since: JDO 2.0 Query newNamedQuery ... must be the name of a query defined in metadata. Parameters: cls - the Class of candidate instances queryName - the name of the query to look up in metadata Returns: the new Query Since: JDO 1.0 Object

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.

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