ObjectDB Database Search

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Apache License, Version 2.0, January 2004

or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor ... the Work, provided that such additional attribution notices cannot be construed as modifying the License. You may add Your own copyright statement to Your modifications and may provide additional or

Eclipse Public License - v 1.0

Contributor: i) changes to the Program, and ii) additions to the Program; where such changes and/or additions to the Program originate from and are distributed by that particular Contributor ... anyone acting on such Contributor's behalf. Contributions do not include additions to the Program

JPA Metamodel API

. This includes all the types whose instances are already stored in the database. Three additional ... : Attribute strAttr2 =   managedType. getDeclaredAttribute ("name"); Additional methods are defined ... . getDeclaredVersion (Long.class); Additional methods are defined in  IdentifiableType  to support

Locking in JPA

. setProperty ("javax.persistence.lock.timeout", 4000); In addition , the hint can be set for a specific ... , LockModeType . NONE ); Other Explicit Lock Modes In addition to the two main pessimistic modes ( PESSIMISTIC_WRITE and PESSIMISTIC_READ, which are discussed above), JPA defines additional lock modes

Query Parameters in JPA

). Ordinal Parameters (?index) In addition to named parameters, whose form is :name , JPQL ... the query and may help in hacking the system. In addition , parameters are more flexible and support ... in a query, which is essential whenever using query parameters. In addition , there are 9 methods

JPA Persistable Types

. In addition , only instances of entity classes preserve identity and are stored ... and values in maps) are either null values or instances of persistable types. In addition

FROM clause (JPQL / Criteria API)

an additional type of identification variable, a join variable, which represent a more limited ... variable that serves as a root and additional join variables that are bound to path expressions

Schema Update

. All the classes in that package are moved to the new package name. In addition , whether or not a new ... in the element the name value of the element is used. In addition , whether or not a new-name

JPA Annotations for Fields

The way a field of a persistable class is managed by JPA can be set by the following annotations: Additional annotations (and enum) are designated for enum fields: Other additional annotations (and enum) are designated for date and calendar fields: Chapter 2 of the ObjectDB manual explains how to use all the above annotations.

JPA Query Expressions (JPQL / Criteria)

: * (multiplication), / (division), + ( addition ) and - (subtraction). Comparison operators ... , [NOT] MEMBER [OF] and the [NOT] LIKE operator. Logical operators : AND, OR, NOT. In addition , JPA

Numbers in JPQL and Criteria Queries

binary operators:   + ( addition ), - (subtraction), * (multiplication) and / (division). ObjectDB ... . get ("population"); Expression param = cb. parameter (Integer.class); // Addition (+) Expression sum1 = cb. sum

ObjectDB License

databases (for which licenses have been purchased) does not require additional separate licenses. Purchase ... organization in one building, and in addition also covers installation of ObjectDB on: Home computers

Defining a JPA Entity Class

is an ordinary Java class. The only unique JPA addition is the @Entity annotation, which marks the class as ... when an entity object is persisted. Chapter 2 provides additional information on how to define entity

JPA Query API

a TypedQuery instance the expected result type has to be passed as an additional argument, as ... and execute queries in JPA: In addition , the syntax of the JPA Query Language (JPQL) is described in:

Running JPA Queries

- for general use in any other case. In addition , the Query interface defines a method for running ... provides an additional method, getSingleResult , as a more convenient method when exactly one result

General Settings and Logging

should also be written to the standard output and the standard error (respectively) in addition ... , which can be shown in the default configuration above, represents the entire ObjectDB system. Additional

Database Management Settings

the size by which to extend the database file when additional space is needed. Small initial size

JPA Entity Fields

with the Version annotation. In addition , a version field should have a numeric type: @Entity

Setting and Tuning of JPA Queries

Hints Additional settings can be applied to queries via hints. Supported Query Hints ObjectDB

ObjectDB License Agreement [ver. 2.0.4]

prevail over any conflicting or additional terms of any oral or written quote, acknowledgement

Detached Entity Objects

EntityManager . In addition , in JPA 2 we can detach an entity object by using the detach method: em. detach

Strings in JPQL and Criteria Queries

(path, param); Predicate l4 = cb. notLike (path, "a%"); // additional methods take also an escape

Collections in JPQL and Criteria Queries

an additional method for checking if a specified element is contained in a collection. JPA

Logical Operators in JPQL and Criteria API

, isLarge); // Either OECD member or large Additional factory methods are available for a variant number

JPA Query Structure (JPQL / Criteria)

elements such as names of entity classes and persistent fields, which are case sensitive. In addition

JPA Reference (JavaDoc)

This reference contains the API documentation (similar to JavaDoc) of the Java Persistence API (JPA) 2.0. The content is derived from the original JPA documentation (in the EclipseLink JPA 2 RI) with some additions and notes. The JPA types are organized into the following sections: The purpose

Retrieving JPA Entity Objects

of additional entity objects. By default, a retrieval operation is automatically cascaded through all the non

JPA Class Enhancer

to the enhance method as a single string delimited by commas or spaces. In addition , a class loader

Privacy Policy

to provide Us additional Personal Data that you are allowed to share with Us using private support tickets

What are the main benefits of using ObjectDB?

multiple values (even for a simple data structure such as a collection of strings). In addition

Database Schema Evolution

Modifications to entity classes that do not change their persistent field definitions (their schema) are transparent to ObjectDB. This includes adding, removing and modifying constructors, methods and non persistent fields. However, additions , deletions and modifications to the persistent fields

Deleting JPA Entity Objects

, if any). Orphan Removal JPA 2 supports an additional and more aggressive remove cascading mode

Is ObjectDB a NoSQL Database?

, but they are easier to use in object oriented languages such as Java. In addition , unlike most other NoSQL databases

Shared (L2) Entity Cache

; EntityManager instances.  In addition to the EntityManager 's L1 cache and the EntityManagerFactory 's L2

JPA Annotations for Relationships

annotation enables configuring cascade and fetch policy, using the following enum types: Additional

JPA Annotations

JPA defines dozens of annotations that can be divided into the following groups: Annotations for JPA aware classes: Annotations for fields in JPA persistable classes: Annotations for additional JPA configuration: Annotations for JPA lifecycle event callbacks: Java EE container annotations: Many

ObjectDB Object Database Features

Recovery from failure by using a  recovery file and double writing. Additional recovery layer

ORDER BY clause (JPQL / Criteria API)

expression is the primary order expression. Any additional order expression is used to order results

Step 4: Run the Application

directory. Running the application again will use the existing database file to store an additional

Spring MVC and JPA Tutorial

addition , the demonstrated application is available as a Maven project:

Step 6: Set the Spring XML

to the Spring dispatcher servlet. Additional spring configuration is set in another XML file

Step 6: Set the Spring XML

above routes web requests with .html suffix to the Spring dispatcher servlet. Additional spring

Step 1: Create a Java EE 6 Web Project

and the Download additional server adapters link. Follow the instructions and specify the path

JPA Tutorials

by step instructions on how to create the sample applications. In addition , the sample applications

Java EE Web Tutorial

database. This tutorial is available in the following versions: In addition the demonstrated application is available as a Maven project:

Step 4: Run the Application

the existing database file to store an additional 1000 objects. You can view the content of the database file

JPA Web Application Tutorial

database. This tutorial is available in the following versions: In addition the demonstrated application is available as a Maven project:

Getting Started with JPA

versions: In addition the demonstrated application is available as a Maven project:

Which API should I use - JPA or JDO?

the primary API, and if necessary, switch to JDO as a secondary API for special additional features

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: