ObjectDB Database Search

having status '%Started' and not '%Failed' and not '%Canceled' and not 'Finished'. I have entities for Job and Status with NamedQueries on Job entity and using TomEE for deployment. I am using following

Hello, we must change (extend) our entity model and therefor we convert the type of some entities ... . But now we introduced as example a new Entity NewKindOfEntityB. And we have a defined logic how we detect the existing EntityB instances they must be converted to the new Entity . With the same ID

Hello, the exception "Attempt to remove a detached entity object" have no information about the detached entity . It is very hard, especially if the involved entities uses cascading, to find the removed call for the detached entity .   It would be very helpful if you can add a few information

Hi, Is there a way to find the number of managed entities given an entity manager? My application has some memory leaks - I am doing clear() on the entity manager(s) but may be I forgot some - so if there is a way to know how many entities are managed by each my entity mgr - it would be helpful

Hello, it is possible to find out if a child entity is just referenced by other parent entity types. But the types of the parent entities are unknown. Is there a possibility to find out if an entity is referenced? best regards btc_es BTC EmbeddedSystems You can only find it (using a query

.8_06 All our entities are enhanced. There are nested entities in following hierarchy: @ Entity ... ? support Support No, there are only entities involved. Have you an idea why this issue occurs? We try

supports: Database file size up to 128 TB (= 131,072 GB = 134,217,728 MB). Up to 2,147,483,648 entity ... . Up to 9,223,372,036,854,775,808 entities per database file. Unlimited database connections (limited by operating system resources).

Free License ObjectDB can be downloaded and used at no cost (including commercially)  with the restriction of a maximum of  10 entity classes and one million entities per database file. This could be useful for small projects, academic assignments, evaluation and learning. ObjectDB

Most Jakarta Persistence configuration is static, defined through annotations (e.g., @ Entity , @Table ) or set globally at the persistence unit level during bootstrapping . This section describes ... when the persistence context is synchronized with the database and when in-memory entity changes are written

Interfaces: Annotation Target: Method, Field Specifies a mapping to an entity that is a map key. The map key join column is in the collection table, join table, or table of the target entity that is used ... and the default values apply. Example 1: @ Entity public class Company { @Id int id; ... @OneToMany

Hello, we have following case: All entities must be enhanced, because see Issue #303. ToleranceDefinition and ResolverMapping are entities and have not any relations each other. Before start transaction the ToleranceDefinition entities exist already in the database. The transaction starts

to the metamodel of persistent entities in the persistence unit. Since: Jakarta Persistence (JPA) 2.0 ... . Since: Jakarta Persistence (JPA) 1.0 EntityType entity ( String entityName ) Return the metamodel entity type representing the entity . Parameters: entityName - the name of the represented entity Returns

a transaction (including the entity manager) the ODB file writer still holds a reference to entities . Performing similar calls repeatedly hence increases the number of references to entities not longer needed ... that all your classes are enhanced. The screenshot indicates using some entity objects ( MappingImpl

: Annotation Target: Method, Field Specifies a column for joining an entity association or element ... column is in the table of the source entity or embeddable. If the join is for a unidirectional ... entity . If the join is for a ManyToMany mapping or for a OneToOne or bidirectional ManyToOne

: - the entity type referenced by the root Super Interfaces: From , Path , FetchParent , Expression , Selection , TupleElement A root type in the from clause. Query roots always reference entities . Since: Jakarta ... the metamodel entity corresponding to the root. Overrides Path.getModel Returns: metamodel entity

Interfaces: Annotation Target: Type Defines a named entity graph . This annotation must be applied to the root entity of the graph, and specifies the limits of the graph of associated attributes and entities fetched when an operation which retrieves an instance or instances of the root entity is executed

from the Persistence class is used to determine the load state of an entity or entity attribute regardless of which persistence provider in the environment created the entity . Since: Jakarta Persistence (JPA) 2.0 Public Instance Methods boolean isLoaded ( Object entity , String attributeName

a simple primary key of the parent entity . The value element specifies the attribute within a composite key to which the relationship attribute corresponds. If the primary key of the entity is of the same Java type as the primary key of the entity referenced by the relationship, the value attribute is not

of the join is an entity type. Inherited from Join Returns: metamodel attribute or null ... join to the given entity . Inherited from From Parameters: entityClass - the target entity class ... , JoinType joinType ) Create and add a join to the given entity . Inherited from From Parameters

of the join is an entity type. Inherited from Join Returns: metamodel attribute or null. Since: Jakarta ... ( Class entityClass ) Create and add an inner join to the given entity . Inherited from From Parameters: entityClass - the target entity class Returns: the resulting join. Since: Jakarta Persistence (JPA

of the join is an entity type. Inherited from Join Returns: metamodel attribute or null. Since: Jakarta ... ( Class entityClass ) Create and add an inner join to the given entity . Inherited from From Parameters: entityClass - the target entity class Returns: the resulting join. Since: Jakarta Persistence

, or null if the target of the join is an entity type. Inherited from Join Returns: metamodel ... to the given entity . Inherited from From Parameters: entityClass - the target entity class Returns ... joinType ) Create and add a join to the given entity . Inherited from From Parameters: entityClass

entity type. The DiscriminatorValue annotation can only be specified on a concrete entity class ... -specific function is used to generate a value representing the entity type. If the DiscriminatorType is STRING , the discriminator value default is the entity name. The inheritance strategy

: - The represented entity type. Super Interfaces: IdentifiableType , Bindable , ManagedType , Type An instance of EntityType represents an entity type. Since: Jakarta Persistence (JPA) 2.0 Public Instance ... element type is returned. If the bindable type is SINGULAR_ATTRIBUTE or ENTITY _TYPE , the Java type

predicates. A navigation path to an attribute value or a referenced entity . A type-safe representation

Download and Run @ Entity record Point(int x, int y) { }

). It is defined on an entity or mapped superclass and assigned a unique name for retrieval

The Jakarta Persistence (JPA) Metamodel API defines a structured hierarchy of interfaces and enumerations to represent the attributes of managed persistent types ( entities , embeddable and superclasses). Metamodel Attributes Hierarchy in Jakarta Persistence (JPA) 3. Base attribute definitions

the company, or other legal entity on behalf of which such individual is accessing or using the Service

should be automatically generated when a new entity is persisted to the database. It allows defining

that satisfy the WHERE predicate. For entity classes with millions of objects in the database

that modify database content, such as storing, updating, and deleting entities , must be performed

The Guest entities will be stored in an ObjectDB database, which will be represented by a JPA's EntityManagerFactory instance with a global application scope. We have to register ... the Enhancer to enhance the entity class, creates an EntityManagerFactory instance and stores it as

. Every visitor that has signed the guestbook is represented by a Guest entity and all the Guest entities are stored in an ObjectDB database. Required Software For this tutorial you will need

is represented by a  Guest entity and all the  Guest entities are stored in an ObjectDB database

. Every visitor that has signed the guestbook is represented by a Guest JPA entity and all the Guest entities

by a Guest entity and all the Guest entities are stored in an ObjectDB database. Required Software

is managed by JPA. Every visitor that has signed the guestbook is represented by a Guest entity and all the Guest entities are stored in an ObjectDB database. Required Software For this tutorial

by a  Guest entity and all the  Guest entities are stored in an ObjectDB database

the guestbook is represented by a Guest entity and all the Guest entities are stored in an ObjectDB database

Started tutorial. The database file contains 1,000 Point entities , which represent points on the line y

the next tutorial step) - a new Guest entity is constructed and stored in the database. Processing

Framework and ObjectDB/JPA support. The next step is  creating a JPA Entity class .

with ObjectDB/JPA support. The next step is creating a JPA Entity class .

MVC Framework and ObjectDB/JPA support. The next step is creating a JPA Entity class .

This is the Eclipse version of the Quick Start with JPA tutorial. It demonstrates how to create and run a simple JPA application in Eclipse. The demonstrated application uses JPA to store and retrieve simple Point entities , where each Point has two persistent fields: x and y

: You should now have an Eclipse Java EE 6 project with ObjectDB/JPA support. The next step is creating a JPA Entity class .

: persist - for storing a new  Guest entity in the database. getAllGuests - for retrieving

- for storing a new  Guest entity in the database. getAllGuests - for retrieving all the existing 

has registered (using a JSP form that will be added in the next tutorial step) - a new Guest entity