ObjectDB Database Search

for equality. Since: Jakarta Persistence (JPA) 3.2 Fetch fetch ( SingularAttribute attribute ) Create a fetch join to the specified single-valued attribute using an inner join. Inherited from FetchParent Parameters: attribute - target of the join Returns: the resulting fetch join. Since: Jakarta

( SingularAttribute attribute ) Create a fetch join to the specified single-valued attribute using an inner join. Inherited from FetchParent Parameters: attribute - target of the join Returns: the resulting fetch join. Since: Jakarta Persistence (JPA) 1.0 Fetch fetch ( SingularAttribute attribute , JoinType jt

testing for equality. Since: Jakarta Persistence (JPA) 3.2 Fetch fetch ( SingularAttribute attribute ) Create a fetch join to the specified single-valued attribute using an inner join. Inherited from FetchParent Parameters: attribute - target of the join Returns: the resulting fetch join. Since: Jakarta

( SingularAttribute attribute ) Create a fetch join to the specified single-valued attribute using an inner join. Inherited from FetchParent Parameters: attribute - target of the join Returns: the resulting fetch join. Since: Jakarta Persistence (JPA) 1.0 Fetch fetch ( SingularAttribute attribute

, embeddables, and collections belonging to the type, and for Path s of attributes belonging ... . Since: Jakarta Persistence (JPA) 3.2 Fetch fetch ( SingularAttribute attribute ) Create a fetch join to the specified single-valued attribute using an inner join. Inherited from FetchParent Parameters

fetch ( SingularAttribute attribute ) Create a fetch join to the specified single-valued attribute using an inner join. Inherited from FetchParent Parameters: attribute - target of the join Returns ... attribute , JoinType jt ) Create a fetch join to the specified single-valued attribute using the given join

. The optional name attribute has no specific function but might appear in the ObjectDB Explorer and in log ... multiple fields in the members attribute of the @Index or @Unique annotation: @Entity @Index ( members ... lastName; } When you specify indexed fields in the members attribute , you can attach the @Index or @Unique

, Strings, or Dates) that do not contain persistent  attributes of their own. An enumeration ... state through attributes form the core of the metamodel: The common superinterface for entities, mapped superclasses, and embeddables, representing any type that manages attributes . A managed type

on entity classes. These graphs optimize database performance by specifying which attributes ... . It is defined on an entity class and contains a list of attribute nodes that constitute the fetch ... and nested relationships: Specifies an individual attribute node within a named entity graph or subgraph

an entity type variable, whose scope is all instances of the entity type. Defines an attribute  variable, whose scope is all values of a specific persistent attribute . The base interface for joining to a collection attribute (one-to-many or many-to-many associations). Represents a join

, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices ... copy of the attribution notices contained within such NOTICE file, excluding those notices ... are for informational purposes only and do not modify the License. You may add Your own attribution notices

;which attributes should be loaded eagerly. Graph definitions Use the following interfaces to define ... attribute loading within the object hierarchy. The common super-interface for both entity and subgraphs. It provides the base methods for adding attribute nodes to the graph structure. Graph elements

Parameters: - The type containing the represented attribute - The type of the represented attribute Super Interfaces: Attribute , Bindable Instances of the type SingularAttribute represents persistent single ... is PLURAL_ ATTRIBUTE , the Java element type is returned. If the bindable type is SINGULAR_ ATTRIBUTE

to the server: The port attribute specifies the TCP port on which the server listens for new ... the connection URL string, as explained in the JPA Overview section. The max attribute specifies ... of connections. The element The element has one attribute , path , which specifies the location of ObjectDB

with the appropriate elements in its configuration file: The url attribute of the element specifies ... and password attributes . The slave server uses these credentials to connect to the master server ... and password attributes must be for a user on the slave server, not the master server. Finally

The following rules apply to all configuration elements and attributes : You can use the variables $objectdb (the ObjectDB home directory) and $temp (the system's default temporary path) in any path attribute value. You can use the mb (megabytes) and kb (kilobytes) suffixes in any size value attribute

communication. The default configuration file contains the following element: The enabled attribute ... attribute of the ssl element must be set to true . Every keystore or truststore file is represented by a separate child element with two required attributes : path , which specifies the path to the file

would otherwise apply. The Convert annotation should not be used to specify conversion of id attributes , of version attributes , of relationship attributes , or of attributes explicitly declared as Enumerated or ... may be applied to: a basic attribute , or a collection attribute of any type other than Map , in which case

predicate ├─ Path # Navigation path ( attributes ) ├─ ParameterExpression # Query parameter ... predicates. A navigation path to an attribute value or a referenced entity. A type-safe representation

. The allocationSize attribute specifies the number of IDs in each allocation. Some IDs in an allocation ... . A minor difference relates to the initial value attribute . Whereas the SEQUENCE strategy maintains

the load state of an entity or attribute without triggering lazy loading. An extended utility interface ... attributes , and access entity content not yet fetched due to lazy loading. Provides an API for programmatic

Relationships define associations between entities. They are represented In Java code by attributes (persistent fields or properties) in persistent classes that hold a reference or a collection ... the ordering of elements in a List-valued association at the time of retrieval. Specifies the attribute

Jakarta Persistence (JPA) provides a comprehensive set of annotations and enums for mapping object models to relational database schemas. These metadata elements define how entities, attributes ... for defining multiple @PrimaryKeyJoinColumn entries. Designates a relationship attribute that provides

the class as a mapped superclass. Its persistent attributes (fields and properties) and their settings ... the attributes of the corresponding entity, typically for use with the Criteria API.

Interfaces: PluralAttribute , Attribute , Bindable Instances of the type ListAttribute represent persistent List -valued attributes . Since: Jakarta Persistence (JPA) 2.0 Public Instance Methods Class ... is PLURAL_ ATTRIBUTE , the Java element type is returned. If the bindable type is SINGULAR_ ATTRIBUTE or

Collection Super Interfaces: PluralAttribute , Attribute , Bindable Instances of the type CollectionAttribute represent persistent Collection -valued attributes . Since: Jakarta Persistence (JPA) 2.0 Public ... . If the bindable type of the object is PLURAL_ ATTRIBUTE , the Java element type is returned. If the bindable

: PluralAttribute , Attribute , Bindable Instances of the type SetAttribute represent persistent Set -valued attributes . Since: Jakarta Persistence (JPA) 2.0 Public Instance Methods Class ... is PLURAL_ ATTRIBUTE , the Java element type is returned. If the bindable type is SINGULAR_ ATTRIBUTE or

of the key of the represented Map Super Interfaces: PluralAttribute , Attribute , Bindable Instances of the type MapAttribute represent persistent Map -valued attributes . Since: Jakarta Persistence (JPA ... object. If the bindable type of the object is PLURAL_ ATTRIBUTE , the Java element type is returned

- The type of the represented collection Super Interfaces: Attribute , Bindable Instances of the type PluralAttribute represent persistent collection-valued attributes . Since: Jakarta Persistence (JPA ... object. If the bindable type of the object is PLURAL_ ATTRIBUTE , the Java element type is returned

the load state of a given persistent attribute of an entity belonging to the persistence unit. Overrides PersistenceUtil.isLoaded Parameters: attributeName - name of attribute whose load state is to be determined entity - entity instance containing the attribute Returns: false if entity's state

-fetched association or attribute . Since: Jakarta Persistence (JPA) 2.0 Public Instance Methods Fetch fetch ( SingularAttribute attribute ) Create a fetch join to the specified single-valued attribute using an inner join. Inherited from FetchParent Parameters: attribute - target of the join Returns

Persistence (JPA) 1.0 CriteriaUpdate set ( SingularAttribute attribute , X value ) Update the value of the specified attribute . Parameters: attribute - attribute to be updated value - new value Returns ... ( SingularAttribute attribute , Expression value ) Update the value of the specified attribute . Parameters: attribute

( SingularAttribute attribute ) Create a fetch join to the specified single-valued attribute using an inner join. Parameters: attribute - target of the join Returns: the resulting fetch join. Since: Jakarta Persistence (JPA) 1.0 Fetch fetch ( SingularAttribute attribute , JoinType jt ) Create a fetch join

or compound attribute path from a bound type or collection, and is a "primitive" expression ... ) 3.2 Path get ( SingularAttribute attribute ) Create a path corresponding to the referenced single-valued attribute . Parameters: attribute - single-valued attribute Returns: path corresponding

must automatically apply the converter to every mapped attribute of the specified target type belonging to any entity in the persistence unit, except for attributes for which conversion is overridden by means ... auto-apply conversion on a per- attribute basis. In determining whether a converter applies

by setting the path attribute in the configuration . The recording directory contains two types

can be set explicitly by using the name attribute of the @Entity annotation: @Entity ( name ="MyName

, set new attribute values, and restrict the scope with a WHERE clause. Use this interface to define

is retrieved from the application scope attribute , and then an EntityManager (representing a database ... are retrieved from the database and stored in the request's "guest" attribute . Then the processing ... " attribute to generate the page output. Finally, the database connection (including the transaction

on every http request: The EntityManagerFactory is retrieved from the application scope attribute ... the request's "guest" attribute . Then the processing is forwarded to the JSP page (which is presented in the next tutorial step). The JSP uses the "guest" attribute to generate the page output. Finally

an application scope attribute in the servlet context - when the web application starts ( contextInitialized ). Retrieves the EntityManagerFactory from the application scope attribute and closes

the database and stored in the request's "guest" attribute . Then the processing is forwarded to the JSP page (which is presented in the next tutorial step). The JSP uses the "guest" attribute to generate

and creates an EntityManagerFactory instance and stores it as an application scope attribute in ... the EntityManagerFactory from the application scope attribute and closes the EntityManagerFactory and the database

. All the Guest entities are retrieved from the database and stored in the request's "guest" attribute ... ). The JSP uses the "guest" attribute to generate the page output. Notice that operations

that have already signed (which are retrieved from the request's guestDao attribute that is set by

attribute (whose name is "guestDao" and its value is guestDao ). The next step is  adding

that have already signed (which are retrieved from the request's "guests" attribute that is set by the servlet in

.jsp" ) and passes the GuestDao component to the JSP as a request attribute (whose name is "guestDao

that have already signed (which are retrieved from the request's "guests" attribute that is set by the servlet in

from the request's "guests" attribute that is set by the servlet in the previous step). The next step