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144

Is named-query supported in orm.xml

I prefer to keep custom JPQL named queries in an external file, e.g. orm.xml, rather than in ... was found starting with element 'named-query'. One of '{"http://java.sun.com/xml/ns/persistence/orm":entity, "http://java.sun.com/xml/ns/persistence/orm":embeddable}' is expected. Does ObjectDB support
129

How to define Default Entity Listeners without persistence.xml and orm.xml

How to define Default Entity Listeners without persistence.xml and orm.xml
29

Storing JPA Entity Objects

element in the XML mapping file: <entity-mappings xmlns="http://java.sun.com/xml/ns/persistence/orm ... /ns/persistence/orm http://java.sun.com/xml/ns/persistence/orm_1_0.xsd" version="1.0 ... has to be located either in the default location, META-INF/orm.xml, or in another location that is specified
29

ObjectDB - Object Database for Java (JPA/JDO)

(ORM) tools can reduce some manual work but cannot eliminate the extra processing time, and even add their own overhead. ObjectDB supports direct storage of graphs of objects and eliminates the ORM ... one product, sparing the need to integrate an external JPA ORM with a database. ObjectDB
25

Can I use ObjectDB to access a relational database?

Relational Mapping (ORM) tool, such as Hibernate, TopLink, EclipseLink, Open JPA or DataNucleus. The DataNucleus ORM implementation supports also the Java Data Objects (JDO) API. ObjectDB is a full featured standalone Object Database Management System (ODBMS) and not an ORM tool, so it is not intended and cannot be used to access other database management systems.
20

JPA Query Structure (JPQL / Criteria)

addition, string literals are also case sensitive (e.g. "ORM" and "orm" are different values). A Minimal
20

What is the Java Persistence API (JPA)?

are Object Relational Mapping (ORM) tools. The mapping bridges between the data representation in ... portable. The unique benefit of using ObjectDB is that the overhead of an intermediate ORM layer
20

What are the main benefits of using ObjectDB?

, eliminating the intermediate ORM layer further accelerates applications. For instance, ObjectDB processes JPQL (JPA Query Language) and JDOQL (JDO Query Language) queries directly, where ORM tools first
4

Step 6: Set the Spring XML

/> <!-- Add JPA support --> <bean id="emf" class= "org.springframework.orm.jpa ... .springframework.orm.jpa.JpaTransactionManager"> <property name="entityManagerFactory" ref="emf
4

Step 6: Set the Spring XML

/> <!-- Add JPA support --> <bean id="emf" class= "org.springframework.orm.jpa ... .orm.jpa.JpaTransactionManager"> <property name="entityManagerFactory" ref="emf"/> </bean

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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