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FROM clause (JPQL / Criteria API)

Identifiers The name of a JPQL query variable must a valid Java identifier ... variables as well as all the reserved identifiers in the list above are case insensitive

Query Parameters in JPA

identified in a query string by their special form, which is a colon (:) followed by a valid JPQL identifier that serves as the parameter name. JPA does not provide an API for defining the parameters ... TypedQuery instance is constructed on every query execution, ObjectDB can identify repeating queries

Eclipse Public License - v 1.0

copyright notices contained within the Program. Each Contributor must identify itself as the originator of its Contribution, if any, in a manner that reasonably allows subsequent Recipients to identify

jakarta.persistence.metamodel.IdentifiableType

: IllegalArgumentException - if id attribute of the given type is not declared in the identifiable type or if the identifiable type has an id class. Since: Jakarta Persistence (JPA) 1.0 ListAttribute ... : IllegalArgumentException - if version attribute of the type is not declared in the identifiable type

jakarta.persistence.metamodel.EntityType

is not declared in the identifiable type or if the identifiable type has an id class ... - if version attribute of the type is not declared in the identifiable type. Since: Jakarta Persistence ... attribute of the given type is not present in the identifiable type or if the identifiable type

jakarta.persistence.metamodel.MappedSuperclassType

declared in the identifiable type or if the identifiable type has an id class. Since: Jakarta ... attribute of the type is not declared in the identifiable type. Since: Jakarta Persistence (JPA) 1.0 ... of the given type is not present in the identifiable type or if the identifiable type has an id

JPA Lifecycle Events

- after an entity has been retrieved from the database. @PreUpdate - when an entity is identified as modified by

Retrieving JPA Entity Objects

object can be uniquely identified and retrieved by the combination of its class and its primary key

Database Doctor

running ObjectDB Doctor's diagnosis regularly in order to identify potential problems early

JPA Persistence Unit

” in the example) identifies the persistence unit when instantiating an EntityManagerFactory

Database Explorer

. To help identify circles in the graph of objects, a special {R} sign (indicating recursive

JPA Primary Key

the database is uniquely identified (and can be retrieved from the database) by the combination of its type

jakarta.persistence.Convert

of each identifier used with the dot notation is the name of the respective embedded field or property ... Persistence (JPA) 1.0 String attributeName A name or period-separated path identifying the converted

jakarta.persistence.metamodel.IdentifiableType.getSupertype()

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.IdentifiableType IdentifiableType getSupertype() Return the identifiable type that corresponds to the most specific mapped superclass or entity extended by the entity or mapped superclass. Returns: supertype of identifiable type or

jakarta.persistence.metamodel.IdentifiableType.hasSingleIdAttribute()

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.IdentifiableType boolean hasSingleIdAttribute() Whether the identifiable type has a single id attribute. Returns true for a simple id or embedded id; returns false for an idclass. Returns: boolean indicating whether the identifiable

jakarta.persistence.metamodel.IdentifiableType.hasVersionAttribute()

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.IdentifiableType boolean hasVersionAttribute() Whether the identifiable type has a version attribute. Returns: boolean indicating whether the identifiable type has a version attribute. Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.metamodel.IdentifiableType.getId(Class)

the identifiable type or if the identifiable type has an id class. Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.metamodel.IdentifiableType.getDeclaredId(Class)

of the given type is not declared in the identifiable type or if the identifiable type has an id class. Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.metamodel.IdentifiableType.getIdClassAttributes()

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.IdentifiableType Set getIdClassAttributes() Return the attributes corresponding to the id class of the identifiable type. Returns: id attributes. Throws: IllegalArgumentException - if the identifiable type does not have an id class. Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.Id

Jakarta Persistence (JPA) Annotation Type jakarta.persistence.Id Implemented Interfaces: Annotation Target: Method, Field Identifies the primary key of an entity. The field or property to which the Id annotation is applied should have one of the following types: any Java primitive type; any

jakarta.persistence.IdClass

Jakarta Persistence (JPA) Annotation Type jakarta.persistence.IdClass Implemented Interfaces: Annotation Target: Type Specifies a composite primary key type whose fields or properties map to the identifier fields or properties of the annotated entity class. The specified primary key type

jakarta.persistence.GenerationType

must assign primary keys for the entity by generating an RFC 4122 Universally Unique IDentifier

jakarta.persistence.ManyToMany

the relationship attribute within the embedded attribute. The value of each identifier used with the dot

jakarta.persistence.ManyToOne

the relationship attribute within the embedded attribute. The value of each identifier used

jakarta.persistence.NamedEntityGraph

name (Optional) The name used to identify the entity graph in calls to EntityManager.getEntityGraph

jakarta.persistence.Version

field or property holds a version number or timestamp identifying the revision of the entity data

jakarta.persistence.AttributeOverride

within an embedded attribute. The value of each identifier used with the dot notation is the name

jakarta.persistence.AssociationOverride

. The value of each identifier used with the dot notation is the name of the respective embedded field or

jakarta.persistence.NamedNativeQuery

Annotation Elements String name The name used to identify the query in calls to EntityManager

jakarta.persistence.NamedQuery

used to identify the query in calls to EntityManager.createNamedQuery . Since: Jakarta Persistence

jakarta.persistence.OneToOne

of each identifier used with the dot notation is the name of the respective embedded field or

jakarta.persistence.OrderBy

attribute. The value of each identifier used with the dot notation is the name of the respective

Navigation through Path to evaluate collection

Hello, I need to evaluate a field (" identifier ") which is situated in a collection ... ;    "OR id MEMBER OF :item.apiId. identifier "+        ... ;   private String apiName;     private String identifier ;   

jakarta.persistence.metamodel.IdentifiableType.getDeclaredVersion(Class)

: IllegalArgumentException - if version attribute of the type is not declared in the identifiable type. Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.metamodel.IdentifiableType.getVersion(Class)

of the given type is not present in the identifiable type. Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.GenerationType.UUID

Jakarta Persistence (JPA) Enum Constant in jakarta.persistence.GenerationType UUID Indicates that the persistence provider must assign primary keys for the entity by generating an RFC 4122 Universally Unique IDentifier . May be used to generate primary keys of type UUID or String . Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.NamedEntityGraph.name

Jakarta Persistence (JPA) Method in jakarta.persistence.NamedEntityGraph String name (Optional) The name used to identify the entity graph in calls to EntityManager.getEntityGraph . If no name is explicitly specified, the name defaults to the entity name of the annotated root entity. Entity graph

jakarta.persistence.NamedNativeQuery.name

Jakarta Persistence (JPA) Method in jakarta.persistence.NamedNativeQuery String name The name used to identify the query in calls to EntityManager.createNamedQuery . Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.NamedQuery.name

Jakarta Persistence (JPA) Method in jakarta.persistence.NamedQuery String name (Required) The name used to identify the query in calls to EntityManager.createNamedQuery . Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.Convert.attributeName

Jakarta Persistence (JPA) Method in jakarta.persistence.Convert String attributeName A name or period-separated path identifying the converted attribute relative to the annotated program element. For example: if an entity class is annotated @Convert(attributeName = "startDate

General Performance Issues Illustrated with a Specific Method

; import javax.persistence.Temporal; import lk.gov.health.phsp.pojcs. Identifiable ; @Entity @Table public class Client implements Serializable , Identifiable { // @Id @GeneratedValue(strategy ... .phsp.pojcs. Identifiable ; import org.joda.time.LocalDate; import org.joda.time.Period; import org.joda

Optimization Question

to identify exactly what fields have changed from one update to the next. Currently the following ... prone code to identify exactly what's changed and replace only exactly those items ... identifier and a mapping of that to the ObjectDB OID is used to delete the existing track data before

Performance issue in a query due to compareTo calls

(AccessType.FIELD) public class TCStep extends Identifiable { @Index private long stepNumber; @Basic ... @Access (AccessType.FIELD) public class Values extends Identifiable { @Index private long stepNumber ... (AccessType.FIELD) public class Values extends Identifiable { @OneToOne (fetch = FetchType.EAGER) private

"Unexpected query expression" using CriteriaQuery FetchParent Interface

: Unexpected query expression end (non keyword identifier is expected)] with root cause com.objectdb.o.UserException: Unexpected query expression end (non keyword identifier is expected) at com.objectdb.o ... end (non keyword identifier is expected) (error 751) (position 9) at com.objectdb.jpa.JpaQuery

JPQL JOIN FETCH Error

. identifiers identifiers left join fetch metadata.sources sources left join fetch metadata.languages ... metadata.formats LEFT JOIN FETCH metadata. identifiers LEFT JOIN FETCH metadata.sources LEFT JOIN FETCH

Need help to make this test work and define proper annotations for entities Lists

identifier ;             public String apiName ... ;             identifier = ident;  

References to objects of missing obsolete entity classes

database: [2021-03-31 15:19:54 #1 type] Type com.btc.ep.vector.tc.internal.dmos. Identifiable is not ... for field property com.btc.ep.vector.tc.internal.dmos. Identifiable .uid using reflection at com ... : java.lang.NoSuchMethodException: com.btc.ep.vector.tc.internal.dmos. Identifiable .setUid(java.lang

ClassCastException during query

.ClassCastException: com.btc.ep.vector.accessor. Identifier $IdentifierKind2 cannot be cast to com.btc.ep.vector.accessor. Identifier $IdentifierKind2     at com.btc.ep.vector.tc.internal.dmos ... loader conflict. There are more than one version of the  com.btc.ep.vector.accessor. Identifier

[ObjectDB 2.2.6_02] Unexpected exception (Error 990) at com.objectdb.o.OBC.aJ(OBC.java:961)

, TimePeriod identifier ) throws Exception { // obtain the moment Calendar now = Calendar.getInstance ... ); latestPoint.setY(y); // create and update a Chart ChartEntity chart = new ChartEntity( identifier