ObjectDB Database Search

on the slave server to define the replicated slave database. More details on replication are provided on the Database Replication and Clustering page.

and provisions to the entire Product, including the embedded Software. 5. The Software is provided "AS

expressions. The CriteriaBuilder interface provides factory methods for building these expressions

only useful in applications that use an ORM-based JPA provider (such as Hibernate, TopLink, EclipseLink

to 0 . Date and Time in Criteria Queries The CriteriaBuilder interface provides three factory methods

relational database by using an ORM JPA provider such as Hibernate, EclipseLink or Open JPA

"), 1000000); AND / OR Expressions The CriteriaBuilder interface provides factory methods

expressions are provided as follows: Literals and Dates  ( literal , nullLiteral , currentDate

= GenerationType . TABLE , generator ="tab") @Id long id; } ORM-based JPA providers (such as Hibernate

criteria query clauses are provided as follows: Criteria SELECT  ( select , distinct

above) are available also as JPA criteria query expressions. The CriteriaBuilder interface provides

Queries are represented in JPA by the Query and TypedQuery interfaces: The JPA Query API section (in chapter 4 of the ObjectDB manual) provides detailed explanation of how exactly to use these interfaces to build and run JPQL queries. The TypedQuery interface (or alternatively the older Query

database programming. A JPA implementation (sometimes referred to as a JPA provider ) is needed in

projects. You may apply using a  support ticket . Please provide information 

DELETE queries provide an alternative way for deleting entity objects. Unlike SELECT queries

. Criteria Query Literals The CriteriaBuilder interface provides two factory methods for building literal

: More details about automatic value generation are provided at the Generated Value section of the ObjectDB Manual.

but they are especially dominant in the WHERE clause. WHERE in Criteria Queries The CriteriaQuery interface provides

Persistence API (JPA) Java Data Objects (JDO) Using a standard Java API (JPA / JDO) provides many benefits

The ObjectDB Doctor tool provides two related services: Diagnosis and validation of an ObjectDB database file Checks a given ObjectDB database file, verifies that it is healthy and valid, and if the file is not valid (it is corrupted), produces a detailed diagnosis report of all the errors. Repair

persistence unit in an XML file or you can simply provide the file path of the ObjectDB database

performance and use a JPA ORM provider (Hibernate, TopLink, EclipseLink or DataNucleus) to access relational

ObjectDB is an Object Oriented Database Management System (ODBMS). It provides all the standard database management services (storage and retrieval, transactions, lock management, query processing, etc.), but it uses an object oriented model to store and manage data. You can easily store ordinary

The next three chapters provide more details on using JPA with ObjectDB: The last two chapters complete

to automatic removal of that object from the database. DELETE Queries DELETE queries provide

ObjectDB is a unique NoSQL database. It doesn't have the known disadvantages and limitations of NoSQL technology, which are weak query capabilities and lack of ACID (atomicity, consistency, isolation, durability). Unlike other NoSQL solutions, ObjectDB provides full support of rich complex queries

provides an additional method, getSingleResult , as a more convenient method when exactly one result

with non criteria queries is supported by ObjectDB and it may be supported in the future by all the JPA providers .

To demonstrate a technical question or an issue - you may have to provide a complete runnable sample program . If an unexpected exception (e.g. NullPointerException or ClassCastException ) is thrown by ObjectDB - posting the full stack trace with no sample program (using the Issue Tracking

IS NULL and IS NOT NULL operators which are provided by JPQL (and SQL): c.president IS NULL c.president

(which is calculated by a query) : Details about all these annotations are provided in Chapter 2 of the ObjectDB manual.

other JPA annotations are designated for Object Relational Mapping (ORM) JPA providers (for mapping

provide an alternative way of updating entity objects. Unlike SELECT queries, which are used

in applications that provide round the clock service (24/7/365) such as most web applications

ObjectDB provides a rich set of features. Many features are implemented as part of ObjectDB's support of the JPA and JDO APIs. Fundamental features of relational databases (e.g. primary keys, derived attributes, grouping queries and aggregate queries) which are usually missing from Object Oriented

and password attributes specify a username and a password that have to be provided when the user connects

Criteria Queries The CriteriaQuery interface provides methods for setting the ORDER BY clause

The ObjectDB Object Database ObjectDB is a powerful Object-Oriented Database Management System (ODBMS). It is compact, reliable, easy to use and extremely fast. ObjectDB provides all the standard database management services (storage and retrieval, transactions, lock management, query

Software's web site are provided "as is". ObjectDB Software makes no warranties, expressed or implied

: These tutorials provide step by step instructions on how to start using JPA in your IDE

itself can represent complete primary key values. Obtaining the Primary Key JPA 2 provides a generic

connections from any machine as long as a valid username and password are provided

The  JPA Web Application tutorial provides step by step instructions on how to build a simple Java/JPA database driven web application (for Tomcat / Jetty) in  Eclipse or  NetBeans . Building a new application step by step is an effective way to learn - but if you prefer

The  Java EE Web Application tutorial provides step by step instructions on how to build a simple Java/JPA database driven web application (for GlassFish 3/ JBoss 6) in  Eclipse or  NetBeans . Building a new application step by step is an effective way to learn - but 

3 web application: Spring MVC and JPA Maven Projects for Download The tutorials provide  step

The Getting Started with JPA tutorial provides step by step instructions on how to build a simple JPA database driven application in Eclipse or NetBeans . Building a new application step by step is an effective way to learn - but if you prefer, you may download and run the result

The  Spring MVC JPA tutorial provides step by step instructions on how to build a simple Java/JPA Spring MVC database driven web application in  Eclipse or  NetBeans . Building a new application step by step is an effective way to learn - but if you prefer

An object ID is a combination of a persistence capable class and a primary key. It provides a unique representation of a persistent object. The following classes serve as predefined ID classes for persistence capable classes with a simple single field primary key: Object IDs are used in many

only have to provide the JDO metadata declaration. Chapter 4 explains how to write the JDO metadata declaration

provides for vendor specific declarations, so the metadata file remains JDO portable. Because index