ObjectDB Database Search

Hello guys, I have a question about creating small new web application , I am almost done with researching and studying and I have covered all the important concepts e.g. # Starting from web ... because they are cloud hosting,  Pay as You Go (PAYG) . - Which IDE and Application Server do you prefer

a large web app with the NetBeans 8.2 Profiler. I can see that exactly one instance of each entity is present in memory, at web app startup, before I've loaded anything, and they won't garbage collect ... to the EntityManager metamodel for caching some oft-used information in an application -wide

Hello, I'm starting a new desktop application built with netbeans platform 7 and objectdb/JPA as ... , but running the netbeans platform application that use the same domain class library an error occurs that crash the application . This is part of the stack trace: java.io.FileNotFoundException: file:\C:\Users

Hello to everyone! I've been developing a GwT application as a project for my computer science ... the cars to rent and needs to ask for some of them to point B or point C. So GWT application of point ... and application . I've learnt that with Spring it's possible to create REST services to access

Hi, I read the database server section of the manual - and it looks like it is not possible to connect to a Database embedded with an application from another application - is that correct? The way to go is to have the DB server running by itself and then the 2 other applications connecting

Hi,  Object are not being persisted when ObjectDB and another db is used in the same application (through spring) with different tx managers, please find an example of this below. Any help ... application and we need to decide if we are going to purchase it very soon. Many Thanks   Persistence

Hi, I am running a java application that records data from 100 feeds into 100 different database - this is done is one thread. It works fine several hours - and suddenly i got an out of memory issue ... - so it must be using the default somewhere). 2/ Using Netbeans, I profiled the application and I noticed

I'm interesting in the ObjectDB, and I want to know if it passiable run at the android application . The ObjectDB does not support other program language , but can the export an relational database models and data,when they have to change. wamdy wamdy Android is currently not supported

I don't think JDO supports altering an entity's Application Identity.  Does ObjectDB? @PersistenceCapable public class MyClass implements Serializable, Cloneable{ @Id private StringIdentity id; ... }   PersistenceManager persistenceManager = ...; Transaction transaction

It is easy to change the properties in persistence.xml file to connect to an ObjectDB server. But I could not find any reference who to connet to an embedded objectdb in a JEE/JPA application through changing persistence.xml file. Can any one please help ? buddhika75 M H B Ariyaratne Just replace

Is there a preferred way to run a client-server database so that updates from one application are immediately visible to another? The way I managed this was to run PersistenceManagerFactory.getDataStoreCache().evictAll(true,MyClass.class) to ensure that a query on MyClass would contain updated

We would like to write the logs of ObjectDB with into the log of our application . What do you use for logging? With or without slf4j and if so, what concrete implementation? Do you see a way to combine your logging with our logging? btc_es BTC EmbeddedSystems The ObjectDB logging is based

Hi, I have a Java program that can manage and create some Person objects. When I start my application and I want to add a person with the same national number as a person already in the database, my program has to block the creation. So far so good. Now... I have a person in my database

Hi, we are using Embeded objectDB 2.4.4_06 in a highly multithreaded concurrent manner and we have noticed a performance problem in our application that seems to be attributed to ObjectDb's internal locking. When profiling our app in JVisualVm we notice a large number of threads are blocked

We are testing objectDB with a multi thread application . Each thread has it's own entityManager created from a common factory. In one thread we receive sometimes an object from the database with the field that is declared as @Id having the value null (what is not correct, we checked

Problems with Tutorials » JPA Web App (Tomcat) » NetBeans JPA Web App

Hello! We are trying to upgrade from 2.6.3 to 2.6.6. Now our application throws an exception. It's generating endless log files. I had to turn up Xmx to even see it before the JVM crashes. (Our web ... :1.3.0.RELEASE] at org.springframework. web .filter.OncePerRequestFilter.doFilter(OncePerRequestFilter

How to access database object to my application.

Evaluating ObjectDB for SaaS Application

to the associated persistence unit. An application -managed EntityManager may be created ... the EntityTransaction obtained by calling getTransaction . A complete idiom for custom application ... . Since: Jakarta Persistence (JPA) 1.0 void close () Close an application -managed entity manager

the application , and which must be colocated in their mapping to a single database. If two entity types ... . An EntityManagerFactory with a lifecycle managed by the application may be created using the static operations ... @PersistenceUnit(unitName="orderMgt") EntityManagerFactory entityManagerFactory; An application

is appropriate for most applications . The element When recovery is enabled, ObjectDB creates a recovery file

. The application can change the default mode at the EntityManager level, which applies to all queries in

of the same transaction. The application is responsible for ensuring that when an object is stored in

of the ObjectDB Manual. Query references Access named queries in the application by name or by using

( | ). Typically, the application uses only the first URL, which is the master database in

is global to the application and can be used by multiple fields across different classes. Specify

ObjectDB requires Java 8 or later. As a pure Java application , ObjectDB should be able to run on any platform that supports the Java Standard Edition. Either the Java Development Kit (JDK) or the Java Runtime Environment (JRE) can be used. A version of ObjectDB for .NET is currently under development.

and easier to use in Java applications . JPQL Query Structure Like SQL, a JPQL SELECT query consists

, and  java.sql.Time ), including HOUR , MINUTE , and SECOND . Defines component types applicable

Jakarta Persistence (JPA) provides a set of annotations to define and map native SQL queries when the standard Java Persistence Query Language (JPQL) is insufficient. While ObjectDB focuses on JPQL and ignores these annotations, they remain essential for applications interacting with relational

Jakarta Persistence (JPA) provides standard annotations to manage dependencies on container-managed persistence resources in both Jakarta EE and Spring Framework environments. They enable the container to inject EntityManager or EntityManagerFactory proxies directly into application components

the application to JPQL injection attacks. For example, suppose the name parameter is received as user input

() if necessary). From String to numeric types, including enum types (when applicable ). From any date/time type

Entity class is a user-defined class whose instances can be stored in a database. To store data in an ObjectDB database by using Jakarta Persistence (JPA), you define entity classes that represent your application's data object model. This chapter contains the following sections:

Welcome to ObjectDB for Java/JPA Developer's Guide. Here you can learn how to develop database applications using ObjectDB and JPA (Java Persistence API). The main purpose of this guide is to make you productive with ObjectDB and JPA in a short time. Guide Structure Demonstrates basic database

). Therefore, ObjectDB can be used in applications that cannot use conventional non ACID NoSQL databases because of a requirement for a very high level of consistency.

( CriteriaBuilder.array ), application defined result classes  ( CriteriaBuilder.construct ), and tuples

their persistent content lazily when they are accessed can improve performance. However, for some applications

/ embeddable classes. Avoid dependency on external libraries . Use a console application with a main

. Therefore, when a managed entity is no longer in use by the application , the garbage collector

locking should be the first choice for most applications because, compared to pessimistic locking

Jakarta Persistence (JPA) defines a hierarchy of unchecked exceptions rooted in PersistenceException to handle runtime failures. This structure enables applications to catch specific errors or manage broad persistence issues by using the base class. The exception hierarchy is as follows

. application .view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:402) at com.sun.faces. application .view.MultiViewHandler.renderView(MultiViewHandler.java:131) at javax.faces. application .ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288) at com.sun.faces.lifecycle

I added the class enhancer to my build script and I get the expected output of a list with the enhanced classes. Now if I try to deploy my created application I get the following error: Caused by: java.lang.AbstractMethodError: Receiver class org.test.app.base.models.Data does not define or

We start by creating a new NetBeans Project: Open the [New Project] dialog box, e.g. by using File New Project... Select Java Java Application and click Next . Choose a Project Name (e.g. Tutorial ). The name of the Main class should be tutorial.Main . Verify that exactly this case sensitive fully

the application to the Spring Framework. For instance, in this example the Spring container: Manages

the application to the Spring Framework. For instance, in this example the Spring container: Manages

Eclipse: Right click the project node and select Run As Java Application . Select Main - point and click OK .

Tomcat as a server and click  OK . Note: To run the application on GlassFish - change