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

Named entity graphs provide a static mechanism for defining fetch plans using annotations on entity classes. These graphs optimize database performance by specifying which attributes ... named entity graphs at the class level using the following annotations: Specifies a named entity graph

Relationships define associations between entities . They are represented In Java code by ... of references to other entities . Jakarta Persistence (JPA) provides annotations to configure ... of entity associations: Defines a single-valued association with one-to-one multiplicity between

engine manages objects and their database mappings. These annotations configure entity behavior ... classes as entities , embeddables, or mapped superclasses while configuring caching and listener behavior. Declare static, reusable JPQL queries directly on the entity class. Optimize data retrieval by

You can update existing entities , as explained in chapter 2 , by following these steps: Retrieve the entities into an EntityManager . Update the relevant entity fields within an active transaction ... an alternative way to update entities . Unlike SELECT queries, which retrieve data, UPDATE queries modify

defining the high-level classification of a type: BASIC , ENTITY , EMBEDDABLE , or MAPPED_SUPERCLASS ... state through attributes form the core of the metamodel: The common superinterface for entities ... with a persistent identity (primary key), serving as the superinterface of entities and mapped

). Up to 2,147,483,648 entity classes per database file. Up to 2,147,483,648 indices per database file. Up to 9,223,372,036,854,775,808 entities per database file. Unlimited database connections ... . Configurable - minimum/maximum connections and timeout. Caching L1 entity cache (per EntityManager). L2 shared

the persistence unit. The methods of this interface should only be invoked on entity instances obtained from or managed by entity managers for this persistence unit or on new entity instances. Since: Jakarta Persistence (JPA) 2.0 Public Instance Methods Class getClass ( T entity ) Return the concrete entity

that iterate over all the database objects of a specific entity class hierarchy, which includes an entity class and all its descendant entity classes. Identification variables are always polymorphic ... By default, the name of an entity class in a JPQL query is the unqualified name of the class

Jakarta Persistence (JPA) annotations define how entity attributes (fields and properties ... . The embedded state is stored in the same table as the owning entity . Specifies a collection field or ... " relationships where the target is not an entity . Specifies that the field or property is not persistent

operates on Java classes and objects. For example, a JPQL query can retrieve entities , unlike SQL ... ). The exceptions, where JPQL is case-sensitive, include Java source elements such as the names of entity classes ... to an entity class is called a range variable. Range variables define an iteration over all the database

the bytecode of compiled classes. Enhancement applies mainly to user-defined persistable classes ( entity ... of persistent field modifications, which avoids the need for snapshot comparison of entities (as ... whenever a persistent field is modified. Enhanced code enables lazy loading of entities

the results of native SQL queries to entities or scalar values using these annotations: Defines how the result set of a native query maps to entities , scalar values, or constructor results. Groups ... to entity fields or scalar types with these detailed annotations: Maps a native query result to a specific

entity that distributes the Program. "Licensed Patents" mean patent claims licensable by ... property rights of any other entity . Each Contributor disclaims any liability to Recipient for claims brought by any other entity based on infringement of intellectual property rights or otherwise. As

. Whenever possible: Use a single Java file with one main class + static inner classes for entity ... ();     }     @ Entity     public static class MyEntity ... warnings (There is no ID defined for this entity hierarchy, The class should have a no-arg public or

These exceptions relate to transaction state and entity lifecycle operations: Thrown when a transaction ... . This exception often wraps an underlying cause. Thrown when EntityManager.persist is called on an entity that already exists in the database. Thrown when an entity is expected to exist but cannot be found

of the root entity . Super Interfaces: Graph This type represents the root of an entity graph that will be used as a template to define the attribute nodes and boundaries of a graph of entities and entity relationships. The root must be an entity type. The methods to add subgraphs implicitly create

is defined in the entity class. Some ORM JPA providers require a version field. You can disable ... index is defined for an existing entity class that already has instances stored in the database ... parameter . The elements To remove the ObjectDB evaluation restrictions (a limit of 10 entity classes

Jakarta Persistence (JPA) Entity Graphs optimize query performance by specifying  ... for defining fetch plans of related entities or embeddables. It enables fine-grained control over deep attribute loading within the object hierarchy. The common super-interface for both entity and subgraphs

object model at runtime. It allows developers to programmatically examine entities , embeddables ... to retrieve entity and attribute information by class or name, similar to the reflection API in Java ... , described in the following subsections: Describes the hierarchy of persistent types, including entities

clause of a query. These interfaces define query variables, including entity roots and various join types ... an entity type variable, whose scope is all instances of the entity type. Defines an attribute ... of these values (typically other referenced entities ) to make working with the query results more efficient

the application, and which must be colocated in their mapping to a single database. If two entity types ... of the Persistence class: if the persistence unit is defined in persistence.xml , an entity manager ... .createEntityManagerFactory , or if the persistence unit was defined using PersistenceConfiguration , an entity

that corresponds to a managed type. Using this class, an entity subgraph can be embedded ... . IllegalArgumentException - if the attribute is not an attribute of this entity .. Since: Jakarta Persistence (JPA) 3.2 ... ... attributeName ) Add one or more attribute nodes to the entity graph

) ObjectDB uses automatic optimistic locking to prevent concurrent changes to entities by multiple users ... ) or "LAZY" . When LAZY is used, result entities are returned as references with no content. This mode can be useful when the shared L2 cache is enabled and entities might already be available in

the fundamental classes and interfaces for entity management and persistence operations. Covers the query API ... for representing the persistent object model. Use these interfaces to inspect entity structures ... model and entity behavior. Documents the exception hierarchy thrown by JPA to indicate errors

Given an EntityManager instance, em , which manages the persistence context for the database, you can use it to store, retrieve, update, and delete objects. Storing new entities The following code ... ; i = 100) { em. remove (p); // delete entity } else { p.setX(p.getX() + 100); // update entity

A JPA persistence unit is a logical grouping of user-defined persistable classes ( entity classes ... ;PersistenceConfiguration allows you to: Define Managed Classes:  Explicitly add entity ... ( entity classes, embeddable classes, and mapped superclasses) as part of a persistence unit

is not an attribute of this entity .. Since: Jakarta Persistence (JPA) 3.2 AttributeNode ... nodes to the entity graph. If there is already an existing node for one of the given attribute names ... to the entity graph. If there is already an existing node for one of the given attributes, that particular

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

( entities and embeddable classes): Can be compared using the equality operators ( = , , == , != ). For entities , e1 = e2 is true if e1 and e2 have the same type and the same primary key value

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

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

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

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

that has signed the guestbook is represented as Guest JPA entity , and all Guest entities are stored in

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

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

entity is constructed and stored in the database. All the Guest entities are retrieved from

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 ... ().getAttribute("emf"); emf.close(); } } The code above: Invokes the Enhancer to enhance the entity class

that will be added in the next tutorial step) - a new Guest entity is constructed and stored in the database. All the Guest entities are retrieved from the database and stored in the request's "guest" attribute

(using a JSP form that is shown in the next tutorial step) - a new Guest entity is constructed and stored in the database. All the Guest entities are retrieved from the database and stored in