ObjectDB Database Search

Jakarta Persistence (JPA) Method in jakarta.persistence.PersistenceUtil boolean isLoaded (    Object entity ,    String attributeName ) Determine the load state of a given persistent attribute. Parameters: attributeName - name of attribute whose load state is to be determined

Jakarta Persistence (JPA) Method in jakarta.persistence.PersistenceUtil boolean isLoaded (    Object entity ) Determine the load state of an entity. This method can be used to determine the load state of an entity passed as a reference. An entity is considered loaded if all attributes

Jakarta Persistence (JPA) Method in jakarta.persistence.Query Query setParameter (    String name ,    Object value ) Bind an argument value to a named parameter. Parameters: name - parameter name value - parameter value Returns: the same query instance. Throws

Jakarta Persistence (JPA) Method in jakarta.persistence.Cache boolean contains (    Class cls ,    Object primaryKey ) Whether the cache contains data for the given entity. Parameters: cls - entity class primaryKey - primary key Returns: boolean indicating whether the entity is in the cache. Since: Jakarta Persistence (JPA) 1.0

with the ObjectDB object database . Given the simplicity of ObjectDB, that should be quick and easy even for a novice. ... ObjectDB databases and perform basic CRUD operations (Create/Store, Retrieve, Update and Delete) on ObjectDB databases . The example program that this chapter presents manages a simple database

number generator for every database . This number generator is used to generate automatic object IDs for entity objects with no primary key fields defined (as explained in the previous section ). The same ... for every new entity object . These generated values are unique at the database level and are never recycled

Querying without indexes requires iteration over entity objects in the database one by one. This may take a significant amount of time if many entity objects have to be examined. Using proper ... but might be presented in the ObjectDB Explorer and in logging. When an entity object is stored in the database

performance. Reducing Development Time and Costs ObjectDB makes database programming easier and faster. The ability to store ordinary objects in the database directly can simplify the code significantly ... fields can be stored by ObjectDB simply as part of the containing object . Relational databases lack

which retrieves all the Country objects in the database is represented by both q1 and q2 . When building ... results and the lowest known common denominator of all the result objects is Object ... objects ), a TypedQuery is preferred. There is another advantage of using  TypedQuery  in

. Up to 9,223,372,036,854,775,808 entity objects per database file. Unlimited database connections (limited by operating system resources). ... ObjectDB is highly scalable and can manage efficiently databases in a wide range of sizes, from ... supports: Database file size up to 128 TB (= 131,072 GB = 134,217,728 MB). Up to 2,147,483,648 entity

ObjectDB Software develops, markets and supports the ObjectDB Object -Oriented Database Management ... persistence solution for Java, based on the Java Persistence API (JPA) and the Java Data Objects (JDO) standards, since ObjectDB is the first object oriented database with built in support of JPA and JDO

Jakarta Persistence (JPA) provides a comprehensive set of annotations and enums for mapping object models to relational database schemas. These metadata elements define how entities, attributes ... and schema definitions Use the following annotations to map entities to database tables and define

) The following method retrieves a Country object from the database by its name: public Country ... ). getSingleResult (); } The WHERE clause reduces the query results to Country objects whose name field value ... that is built by using the JPA Criteria API - parameters (as other query elements) are represented by objects

whose name is  "Country.findAll" that retrieves all the  Country objects in the database ... of, and that includes all the entity classes that have objects in the database . However, an attempt to use a named query ... queries. But, because mapping files are useful mainly for Object Relational Mapping (ORM) JPA providers

should be automatically generated when a new entity object is persisted to the database . It allows ... generator that uses a database sequence. It allows you to customize the sequence name, initial value, and allocation size. Defines a named primary key generator that uses a specific database table

ObjectDB. hows how to use JPA to store, retrieve, update and delete database objects . Explains ... Welcome to ObjectDB for Java/JPA Developer's Guide. Here you can learn how to develop database ... you productive with ObjectDB and JPA in a short time. Guide Structure Demonstrates basic database

Jakarta Persistence provides powerful APIs for executing database queries using JPQL strings or ... with full type safety. General query objects Execute SELECT, UPDATE and DELETE queries in JPA using ... EntityManager  methods such as createQuery to build  query objects using: Direct JPQL query strings

and objects in a database file. The full edition of the Software (without the restrictions ... the ObjectDB Database Management System software ("The Software"), subject to the terms and provisions ... and only as part of the Customer's product ("The Product"). The Product is not a Database Management

; with the restriction of a maximum of  10 entity classes and one million entity objects per database file. This could be useful for small projects, academic assignments, evaluation and learning ... databases are managed, but using ObjectDB on client machines merely to access remote ObjectDB

object model at runtime. It allows developers to programmatically examine entities, embeddables ... repository for all managed types within a persistence unit (or an ObjectDB database ). It provides methods ... integration Integrate metamodel objects with the Criteria API using the following interface: Represents

engine manages objects and their database mappings. These annotations configure entity behavior ... specifically for Object -Relational Mapping (ORM) and native SQL execution; ObjectDB ignores these relational annotations: Annotations for mapping objects to relational tables, columns, and foreign keys

property as an attribute containing a collection of embedded objects . This is used for "one-to-many ... ): Specifies the database SQL type for a persistent field or property of type java.util.Date or java.util.Calendar . Specifies the database SQL type for a map key of type java.util.Date or java.util.Calendar

Operations on the database will be performed by an instance of a Data Access Object (DAO ... - for storing a new  Guest entity object in the database . getAllGuests - for retrieving all the existing  Guest objects from the database . By using Spring components we can move some work from

Operations on the database will be performed by an instance of a Data Access Object (DAO ... - for storing a new  Guest entity object in the database . getAllGuests - for retrieving all the existing  Guest objects from the database . By using Spring components we can move some work from

the next tutorial step) - a new Guest entity object is constructed and stored in the database . All the Guest entity objects are retrieved from the database and stored in the request's "guest" attribute ... , IOException { // Obtain a database connection: EntityManagerFactory emf = (EntityManagerFactory

is constructed and stored in the database . All the Guest entity objects are retrieved from the database ... , HttpServletResponse response) throws ServletException, IOException { // Obtain a database connection ... .getRequestDispatcher("/guest.jsp") .forward(request, response); } finally { // Close the database connection

To store objects in an ObjectDB database using JPA we need to define an entity class: Open ... objects in the database was created in the project (under Java Resources: src guest). Use copy ... with the specified database url. The next step is adding an EJB Session Bean that will manage Guest entity objects .

To store objects in an ObjectDB database using JPA we need to define an entity class: Open ... objects in the database was created in the project (under Source Packages guest). Use copy and paste ... with the specified database url. The next step is adding an EJB Session Bean that will manage Guest entity objects .

To store objects in an ObjectDB database using JPA we need to define an entity class: Right click ...   Finish to create the new entity class. A new class that should represent  Guest objects in the database was created in the project (under Java Resources: src/main/java guest). Use  copy

To store objects in an ObjectDB database using JPA we need to define an entity class: Open ... objects in the database was created in the project (under Source Packages guest). Use copy and paste ... as a JPA provider with the specified database url. The next step is adding a Spring DAO Component class that will manage Guest entity objects .

To store objects in an ObjectDB database using JPA we need to define an entity class: Open ... to create the new class. The new class should represent Guest objects in the database . Use copy ... ; The new class should represent Guest objects in the database . Besides the @Entity annotation

: persist - for storing a new  Guest entity object in the database . getAllGuests - for retrieving all the existing  Guest objects from the database . EJB classes are only supported by Java EE ... Operations on the database will be performed by an instance of a session bean (EJB) class

to store Point objects in the database and then retrieve them from the database . Use copy and paste ... .createEntityManager(); // Store 1000 Point objects in the database : em.getTransaction().begin(); for (int i = 0; i ... a database connection // (create a new database if it doesn't exist yet): EntityManagerFactory emf

) class defines two methods: persist - for storing a new Guest entity object in the database . getAllGuests - for retrieving all the existing Guest objects from the database . EJB classes ... Operations on the database will be performed by an instance of a session bean (EJB) class

= emf.createEntityManager(); // Store 1000 Point objects in the database : em.getTransaction().begin(); for (int i = 0; i ... In this step we will add a main class to the project to store and retrieve Point objects from the database : Right click the tutorial package in the [Package Explorer] window and select New Class

entity object is constructed and stored in the database . All the Guest entity objects are retrieved from the database and stored in the request's "guest" attribute. Then the processing is forwarded ... to generate the page output. Notice that operations on the database are carried on by the 

To store objects in an ObjectDB database using JPA we need to define an entity class: Open ... on " + signingDate + ")"; } } The new class should represent Guest objects in the database ... listener class that will manage a JPA's EntityManagerFactory representing the ObjectDB database .

that will be added in the next tutorial step) - a new Guest entity object is constructed and stored in the database . All the Guest entity objects are retrieved from the database and stored in the request's ... on the database are carried on by the GuestDao session bean, which is instantiated and injected by

The Guest entity objects will be stored in an ObjectDB database , which will be represented by ... a ServletContextListener to perform initialization and cleanup operations: The database will be opened (or ... . The database will be closed when the web application stops (or when the web server shuts down), by

The Guest entity objects will be stored in an ObjectDB database , which will be represented by ... a ServletContextListener to perform initialization and cleanup operations: The database will be opened (or ... an EntityManagerFactory . The database will be closed when the web application stops (or when the web server shuts

To store objects in an ObjectDB database using JPA we need to define an entity class: Right click on the project in the [Package Explorer] window and select New Class . Enter tutorial as the package ... should represent Point objects in the database . Apart from the @Entity annotation and the id field

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Java Class] dialog box, e.g. by right clicking the tutorial package node (in the [Projects] window ... objects in the database . Besides the @Entity annotation and the id field (and its annotations

. Every visitor that has signed the guestbook is represented by a Guest entity object and all the Guest entity objects are stored in an ObjectDB database . Required Software For this tutorial ... ;to create and run a database driven Java web application in NetBeans - using Tomcat 6 Apache Tomcat

is managed by JPA. Every visitor that has signed the guestbook is represented by a Guest entity object and all the Guest entity objects are stored in an ObjectDB database . Required Software ... ;to create and run a database driven Java web application in Eclipse - using Tomcat 6, ObjectDB and JPA

This tutorial demonstrates how to create and run a database driven Java web application using ... by a  Guest entity object and all the  Guest entity objects are stored in an ObjectDB database . This tutorial is available in the following versions: In addition the demonstrated application is available as a Maven project:

, a new ObjectDB database file is generated in the db subdirectory under the ObjectDB installation directory. Running the application again will use the existing database file to store an additional 1,000 objects . You can view the content of the database file by opening it in the ObjectDB Explorer

simple as possible - we will use the basic  points.odb ObjectDB database file from the Getting Started tutorial. The database file contains 1,000 Point entity objects , which represent points ... This tutorial demonstrates how to create reports based on data in an ObjectDB database using

the existing database file to store an additional 1000 objects . You can view the content of the database file ... ) When you run the application for the first time, a new ObjectDB database file is generated in the db sub

the next tutorial step) - a new Guest entity object is constructed and stored in the database . Processing ... output. The JSP uses the GuestDao component to display the existing Guest objects . The returned ModelAndView object defines a target JSP ( "guest.jsp" ) and passes the GuestDao component to the JSP as

object is constructed and stored in the database . Processing is forwarded to a JSP page ... component to display the existing Guest objects . The returned ModelAndView object defines a target JSP