ObjectDB Database Search

when my software boots up.   2-) Also for speed up I am inserting a message into table ... Hi , I have 3 questions for objectdb : 1-) How can i preload all table rows into memory in ... to prevent writing into disk for objectdb. So i can query from guava cachebuilder then objectdb. Do i

a script ? In SQL world we have scripts like " insert into ..." - Can we use main objectdb.jar library

Jakarta Persistence (JPA) Method in jakarta.persistence.OrderColumn boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Default: true Since: Jakarta Persistence (JPA) 1.0

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 (I checked there is no leak in java - I cleared the entity manager every 10 new entity) - I run

this make sense? Is there a way to map the structure of the table directly into ObjectDB from SQL Server

the Athletes into a squad it brings up an exception. so the problematic line would u find int the main class

ok my problem,    i persist a Squad Object into a Cup Object at the beginning, after i have to create and persist a competition object in which i have to put some of the already created/persisted squads. the final method looks like that: public void actionPerformed(ActionEvent e) { List

Hello, I've just installed ObjectDB and done some tests. I'm inserting 22k of records like 10k ... one entity have index on String column. Entities are not enhanced and inserts are committed in a separate ... ; then 11 seconds and so on. Should I change my config in some way to get more stable insertion time

1. I got about 10K inserts / second, is it normal? I would expect more than that, like close to 100K/second. I can definitely do 80K inserts /seconds on Oracle with batch insert on table with one primary key. 2. Is batch update/ insert operation supported? I attached the files. edy_at_ssn Edy Oey

Need to close+open database for a commit to be taken into account

Hello, I have a problem with inserting of many entities. We use strings as primary key and indices. But if the db table of the entity type contains more and more data then the inserting of further entities needs also more and more ram memory, this leads to out of memory exceptions. But if use

Hello, we have an entity class hierarchy and we want to insert a new entity in this hierarchy and our database must be automatically updated by schema evolution. Unfortunately it does not work ... would be also inserted new in the class hierarchy then it works well. See our example in the attachments. Execute

Cannot initialize db after inserting a java.util.List

Significant I/O costs during batch update or insert data.

can be integrated into the build process. The following Maven configuration uses the exec-maven-plugin to integrate enhancement into the build process: ... ... ... org.codehaus.mojo exec-maven-plugin 1.6.0 ... into an ANT build script, as follows: Enhancement API The ObjectDB Enhancer can also be invoked from

of the given new or detached entity instance into the current persistence context, resulting in, respectively, an insert or possible update when the persistence context is synchronized with the database ... and persistent, resulting in its insertion in the database when the persistence context

Jakarta Persistence (JPA) Enum Constant in jakarta.persistence.CacheStoreMode USE Insert entity data into cache when read from database and insert /update entity data when written to the database: this is the default behavior. Does not force refresh of already cached items when reading from database. Since: Jakarta Persistence (JPA) 1.0

Hi, The command " insert ignore into " in mysql can avoid interruptions caused by program errors ... have to create a repeated topic. how to implement insert ignore in objectdb? gzdillon Lai Yang ... have to do this for inserting : @NamedQuery( name="isExistName", query="SELECT count(c) FROM Student c WHERE c

The fields of persistable user-defined classes (entity classes, embeddable classes, and mapped superclasses) can be classified into the following five groups: Transient fields Persistent fields ... long version; } If a version field exists, ObjectDB automatically injects the version value into

to the database unless you merge them back into an EntityManager , which makes them managed again. Detached ... a detached object back into a persistence context by using the merge method: Employee managedEmployee = em

Jakarta Persistence API (JPA) 3.2 documentation, generated from the official JavaDoc and enriched with practical notes. It groups the API types into logical sections to help you locate core concepts ... . The JPA types are organized in this reference into the following sections : Defines

Jakarta Persistence (JPA) Enum Constant in jakarta.persistence.CacheStoreMode BYPASS Don't insert into cache. Since: Jakarta Persistence (JPA) 1.0

I store images into objectdb. The schema is : ::=( , , , , ) ::=String ::=char ::=int ::=byte[] ::=@ID So simple a class will fail after 155,648 insertions with -Xmx1432m, ... NO = 151552 ... insertions ? Question 2 : Why the size of db increased to 16,671,309,824, while the original images

simple numeric values into more complex expressions. Arithmetic operators JPA supports

the entire database into memory, which is often unacceptable. You can exclude a persistent reference field

literals dynamically into the query string, which results in more efficient queries. @NamedQuery

As explained in Chapter 2 , you can delete entities from the database by following these steps: Retrieve the entities into an EntityManager . Remove these objects from the EntityManager within an active transaction, either explicitly by calling the remove method or implicitly through a cascading

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 name directly into the query as a String literal. Using literals instead of parameters

use of old entities after a schema change. When an entity with an old schema is loaded into memory

until after the database insert has occurred. Returns null if the entity does not yet have an id. Parameters: entity ... until after the database insert has occurred. Returns null if the entity does not yet have an id. Parameters: entity

) Whether the foreign key column is nullable. Default: true Since: Jakarta Persistence (JPA) 1.0 boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence

Persistence (JPA) 1.0 boolean insertable (Optional) Whether the column is included in SQL INSERT

) Whether the foreign key column is nullable. Default: false Since: Jakarta Persistence (JPA) 1.0 boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence

Hi , your explorer jar is old java swing thats fast and compatible with intellij plugins. Its too easy to embed your explorer into Intellij or Android Studio  Here what i have asked for : https://chatgpt.com/share/68ca9770-4df4-8001-85b8-c90596cc804d kadirbasol Kadir BASOL Thank

Hi I have a DB with 4 entities and a total of 4 index. Once I reach 1048565 total objects in the whole DB, i am unable to insert more object, although i get NO error message nor exceptions. Doctor said Db is fine (see below) I notice that 1048565 objects + 4 entities + 4 ID indexes + 4

-specific attributes. Superclass subgraph entries will be merged into subclass subgraphs. The value ... subgraphs are intended to add subclass-specific attributes. Superclass subgraph entries are merged into

Jakarta Persistence (JPA) Enum Constant in jakarta.persistence.CacheStoreMode REFRESH Insert /update entity data held in the cache when read from the database and when written to the database. Force refresh of cache for items read from database. Since: Jakarta Persistence (JPA) 1.0

In this final step we will add a simple table to the report: Open the [ Insert Table] dialog box by dragging a Table from the [Palette] window and dropping it on the report design (.rptdesign) layout. Set the column number to 2 , number of details to 1 , select the data set (e.g. Points by X

Jakarta Persistence (JPA) Interface jakarta.persistence.metamodel.Bindable Type Parameters: - The type of the represented object or attribute An instances of the type Bindable represents an object or attribute type that can be bound into a Path . Since: Jakarta Persistence (JPA) 2.0 Public

class and injects an instance of the EJB class into the servlet (as shown in the  next step ). Prepares an  EntityManager automatically and injects it into the  em field

the instantiation of the DAO component class and injects an instance of the DAO component class into the controller, as shown in the next step. Prepares an  EntityManager automatically and injects it into

the instantiation of the DAO component class and injects an instance of the DAO component class into the controller, as shown in the next step. Prepares an  EntityManager automatically and injects it into

. A GuestDao component is automatically constructed and injected by Spring into the guestDao field

the new class. Copy and paste the following code into the newly created Point class: package tutorial

To integrate the Spring Framework into a web application we have to add the definition of the Spring dispatcher servlet to the  web.xml configuration file and to configure that servlet using another xml configuration file. Open the  web.xml file (under src/main/webapp/WEB-INF) in a text

To integrate the Spring Framework into a web application we have to add the definition of the Spring dispatcher servlet to the web.xml configuration file and to configure that servlet using another xml configuration file. Open the web.xml file (under Web Pages WEB-INF) in a text editor (by right

when the Maven project is imported into the IDE). Choose or define the server and click  Finish

project is imported into the IDE). Choose or define the server and click  Finish . Eclipse

is automatically constructed and injected by Spring into the guestDao field (because it is annotated