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Forum
10

Using Enum type in NamedQuery: Field is not found in type

I'm trying to switch an application that worked fine in Hibernate to ObjectDB and am having issues ... Type {     A,B,C } that is stored in an @Enumerated member variable private Type type; @Enumerated public Type getType() {     return type; } I then try to query this field in the following
Issue
10

A bug in the JDOQL processor in recent versions of ObjectDB

There seems to be a bug in the JDOQL processor in recent versions of ObjectDB. I've uploaded a "laptop" example to demonstrate the problem. The query in Test1.main should return "ThinkMachine MAX SX 20", but it returns incorrect "Media Central Media 555". Earlier versions (at least up to 2.5.4
Forum
10

how to create in memery database in objectdb

plz can u give or help me how to create in memory database in objectdb   with example See answer in this forum thread (also use that other thread for further discussion). yadavanil
Manual
10

WHERE clause (JPQL / Criteria API)

The WHERE clause adds filtering capabilities to the FROM-SELECT structure. It is essential in any ... of this query defines an iteration over all the Country objects in the database using the c range ... , the WHERE clause gets an opportunity to function as a filter. The boolean expression in
Manual
10

Setting and Tuning of JPA Queries

) .getResultList(); These methods can be invoked in a single expression with getResultList since the setter methods in Query and TypedQuery support method chaining (by returning the query object ... of other EntityManager instances). JPA implementations can easily make uncommitted changes visible in
Manual
10

SELECT clause (JPQL / Criteria API)

objects. JPA 2 adds the ability to use almost any valid JPQL expression in SELECT clauses. Specifying the required query results more precisely can improve performance and in some cases ... - JPQL does not support the "SELECT *" expression (which is commonly used in SQL). Projection of Path
Manual
10

JPA Query Structure (JPQL / Criteria)

. Having a SQL like syntax in JPA queries is an important advantage because SQL is a very powerful query ... and easier to use in Java. JPQL Query Structure As with SQL, a JPQL SELECT query also consists of up to 6 clauses in the following format: SELECT ... FROM ... [WHERE ...] [GROUP BY ... [HAVING
Forum
10

Error in reading Enum in JPA - Failed to read using reflection

Error in reading Enum in JPA - Failed to read using reflection
Manual
10

Database Connection using JPA

during their lifetime. For instance, in a web application it is common to establish a separate ... embedded directly in your application (embedded mode), an absolute path or a relative path ... and required for other file name extensions (e.g. "objectdb:my-db.tmp"). To use client server mode, a url in
Manual
10

Database Server

ObjectDB Server is a tool that manages ObjectDB databases in a separate dedicated process, making these databases accessible to client applications in other processes including ones on other remote machines. The main benefits in running an ObjectDB server and using the client-server mode