ObjectDB Database Search

hi, How can I realize multi selection with the criteria api concerning distinct? I.e. doing something like SELECT DISTINCT $1, $2 wouldn't work because I do only have something like criteria.multiselect(...) and nothing like builder.distinct( selection ) so that I could do something like criteria

SELECT : TypedQuery query = em.createQuery(     " SELECT p FROM Point p WHERE p ... ); ** the Point class is of the tutorial. I found the above select method is ten times slower ... . Is there any faster method of select ? TIA pikotenta pikotenta Entity objects can be retrieved by

create a JPA query that selects such objects?  Something like the following (but clearly does not work) :  SELECT p FROM Person p where p.pMap['location']='California' Any thoughts?  Thanks, -Adam   adamMc Adam Please try the following query: SELECT p FROM Person p WHERE p.pMap

Hello, I got a realy strange SELECT problem. In explorer query " select p  from Player p where p.confirmed==false", given me some results with p.confirmed==TRUE. And when I try to do (see image) " select p, p.confirmed  from Player p where p.confirmed==false", I getting p-confirmed-true

Hello is there way to get random rows? Functions like rand(), random(), newid() doesn't work ;/ for example: em.createQuery(" SELECT s FROM StawkaVat s ORDER BY rand()").setMaxResults(5).getResultList(); gives exception: Exception in thread "AWT-EventQueue-0" [ObjectDB 2.5.6_02] SELECT s FROM StawkaVat s == rand

so when I use... SELECT firstName + " " + middleName + " " + lastName FROM Employee     ... an additional field. e.g. displayName . Use a method in the SELECT clause. It could be a static method

;   issue: In case 1 transaction is committed, but select fails!  *   *     ... (em.createQuery(" select a from A a", A.class).getResultList());     }   

) Example query looks like : String strSelect = " SELECT e FROM TestEntity WHERE e.state.entityState IN

simple codes(see attachment), failed.   gzdillon Lai Yang DELETE queries should not be run with getSingleResult ( which is for SELECT queries). Use executeUpdate instead. See this manual page . support Support

I am trying to query all entities whose date is between today and today + X days. The date inside the entity is a LocalDate . To do so I created the following query: .createQuery( " SELECT e FROM ... the SELECT a Date is used and not a LocalDate , so I ignored this error. Now I tried a LocalDate

When I run the following code: EntityManager em = getEm(); Customer result = null; try {     logger.debug("Ident: "+ident);     result = em.createQuery(" Select c from Customer c where c.identifier=:id", Customer.class).setParameter("id", ident).getSingleResult

we try to optimize for our queries and tried a selective update, but in explorer it just shows query execution error:   UPDATE ObjectNode o SET o.state = 5 where o.classIdentifier = '(MA)' and o.objectNameUpper = 'DMU200P2' and o.state = 0 and o.type = 1 and o.parentNode.classIdentifier

the following query, where :d represents the Department entity: SELECT e FROM Employee e WHERE e.department ... this case, the employees field is populated with the results of the following query: SELECT e FROM

and TypedQuery objects: Query q1 = em. createQuery (" SELECT c FROM Country c"); TypedQuery q2 = em. createQuery (" SELECT c FROM Country c", Country.class); In the preceding code, the same JPQL query

: - the type of the selection item. Super Interfaces: AbstractQuery , Expression , CommonAbstractCriteria , Selection , TupleElement The Subquery interface defines functionality that is specific to subqueries. A subquery has an expression as its selection item. Since: Jakarta Persistence (JPA) 2.0 Public

, From , Path , FetchParent , Expression , Selection , TupleElement The PluralJoin interface defines ... query construction. Since: Jakarta Persistence (JPA) 2.0 Public Instance Methods Selection alias ( String name ) Assigns an alias to the selection item. Once assigned, an alias cannot be changed or

referenced by the path Super Interfaces: Expression , Selection , TupleElement Represents a simple ... how to use Path . Public Instance Methods Selection alias ( String name ) Assigns an alias to the selection item. Once assigned, an alias cannot be changed or reassigned. Returns the same selection item

Interfaces: PluralJoin , Join , From , Path , FetchParent , Expression , Selection , TupleElement ... Methods Selection alias ( String name ) Assigns an alias to the selection item. Once assigned, an alias cannot be changed or reassigned. Returns the same selection item. Inherited from Selection

: - the entity type referenced by the root Super Interfaces: From , Path , FetchParent , Expression , Selection ... . Public Instance Methods Selection alias ( String name ) Assigns an alias to the selection item. Once assigned, an alias cannot be changed or reassigned. Returns the same selection item. Inherited from

, From , Path , FetchParent , Expression , Selection , TupleElement The SetJoin interface is the type ... that has been specified as a Set . Since: Jakarta Persistence (JPA) 2.0 Public Instance Methods Selection alias ( String name ) Assigns an alias to the selection item. Once assigned, an alias cannot be changed or

: PluralJoin , Join , From , Path , FetchParent , Expression , Selection , TupleElement The CollectionJoin ... Methods Selection alias ( String name ) Assigns an alias to the selection item. Once assigned, an alias cannot be changed or reassigned. Returns the same selection item. Inherited from Selection

: Expression , Selection , TupleElement The type of a simple or compound predicate: a conjunction or ... how to use Predicate . Public Instance Methods Selection alias ( String name ) Assigns an alias to the selection item. Once assigned, an alias cannot be changed or reassigned. Returns the same

Parameters: - the type of the parameter expression Super Interfaces: Parameter , Expression , Selection ... Instance Methods Selection alias ( String name ) Assigns an alias to the selection item. Once assigned, an alias cannot be changed or reassigned. Returns the same selection item. Inherited from

.persistence.criteria.CriteriaBuilder.Case Super Interfaces: Expression , Selection , TupleElement ... which they are specified. Since: Jakarta Persistence (JPA) 1.0 Public Instance Methods Selection alias ( String name ) Assigns an alias to the selection item. Once assigned, an alias cannot be changed or

.persistence.criteria.CriteriaBuilder.In Super Interfaces: Predicate , Expression , Selection ... Methods Selection alias ( String name ) Assigns an alias to the selection item. Once assigned, an alias cannot be changed or reassigned. Returns the same selection item. Inherited from Selection Parameters

.persistence.criteria.CriteriaBuilder.Coalesce Super Interfaces: Expression , Selection , TupleElement ... otherwise. Since: Jakarta Persistence (JPA) 1.0 Public Instance Methods Selection alias ( String name ) Assigns an alias to the selection item. Once assigned, an alias cannot be changed or reassigned

Remove of an entry from a @OneToMany collection is not possible if the enhancer is disabled

( name ="Country.findAll", query =" SELECT c FROM Country c", hints ={@ QueryHint (name="jakarta

JPQL and criteria queries are built on query expressions. Every query consists of clauses , such as SELECT , FROM , WHERE , GROUP BY , HAVING , and ORDER BY . Each clause is composed of JPQL or Criteria API expressions. Atomic expressions The atomic query expressions are: JPQL / Criteria Variables

types in Java. Entity type literals enable  selective retrieval by type . In JPQL, an entity type

editor (by right clicking and selecting   Open With Text Editor or by double click ... that file: Right click the WEB-INF node in the [Package Explorer] window, select   New Other... XML

In this step we will add a servlet to manage guestbook web requests: Open the [Create Servlet] dialog box by right clicking the guest package node (in the [Package Explorer] window),  selecting ... of guests: List guestList = em.createQuery( " SELECT g FROM Guest g", Guest.class).getResultList

by right clicking the guest package node (in the [Package Explorer] window), selecting New ... the class name - use exactly that case sensitive class name. Click Next and then Select All to enable

clicking and selecting Edit or by double click and then moving to the XML tab in the editor window ... , select New Other... and then choose the XML category, XML Document and click Next . Enter spring

We start by creating a new Maven web project in NetBeans: Open the [New Project] dialog box, e.g. by using File New Project... Select Maven Maven Web Application and click Next . Choose a Project Name (e.g. Guestbook ) and select Java EE 5. Enter Maven Group Id (e.g. com.objectdb.tutorial.spring

We start by creating a new Java EE dynamic web project in Eclipse: Open the [New Project] dialog box, e.g. by using File New Project... Select Web Dynamic Web Project and click Next . Choose a Project Name (e.g. Guestbook ). Select GlassFish Server Open Source Edition 3 (Java EE 6) as the Target

node (in the [Projects] window), selecting New Other... Java EE (or Enterprise JavaBeans) Session ... getAllGuests() { TypedQuery query = em.createQuery( " SELECT g FROM Guest g ORDER BY g.id", Guest.class

clicking the guest package node (in the [Projects] window under Source Packages) and selecting New ... () { TypedQuery query = em.createQuery( " SELECT g FROM Guest g ORDER BY g.id", Guest.class); return

Connections to the database are represented in BIRT as data sources. To create an ObjectDB data source: Open the [New Data Source] dialog box by right clicking the Data Sources node in the [Data Explorer] window and selecting   New Data Source . Select ObjectDB Data Source from the list

) layout. Set the column number to 2 , number of details to 1 , select the data set (e.g. Points by X ... in the [Navigator] window and selecting Report Run Report :  

clicking the guest package node (in the [Package Explorer] window) and selecting   New Class ... getAllGuests() { TypedQuery query = em.createQuery( " SELECT g FROM Guest g ORDER BY g.id", Guest.class); return

In this step we will add the JSP that generates the guestbook HTML output: Open the [New JSP File] dialog box by right clicking the WEB-INF node under the Web Pages node (in the [Projects] window) and selecting New JSP ... Enter guest as the jsp file name - use exactly that case sensitive class

You can run the application now by right clicking the Main node (in the [Projects] window) and selecting Run File . The expected output in the [Output] window, is: Total Points: 1000 Average X: 499.5 (0,0) (1,1) (2,2) (3,3) : : (998,998) (999,999) When you run the application for the first time

In this step we will add a Spring Controller to manage guestbook web requests: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Package Explorer] window) and selecting   New Class . The package name should be  guest . Enter  GuestController as

To store objects in an ObjectDB database using JPA we need to define an entity class: Right click on the project in the [Package Explorer] window and select New Class . Enter tutorial as the package name (case sensitive). Enter Point as the class name (case sensitive). Click Finish to create

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Java Class] dialog box, e.g. by right clicking the tutorial package node (in the [Projects] window) and selecting New Java Class ... Enter Point as the class name - use exactly that case sensitive

You can run the application now by right clicking the GuestServlet node (in the [Project Explorer] window) and selecting Run As Run on Server Finish : Since we are using ObjectDB in embedded mode - the database file is created under the GlassFish directory (e.g. at domains\domain1\eclipseApps

In this step we will add the JSP that generates the guestbook page output: Open the [New JSP File] dialog box by right clicking the Web Pages node (in the [Projects] window) and selecting New JSP ... Enter guest as the jsp file name - use exactly that case sensitive class name. Click Finish

You can now run the application by right clicking the Main.java file (in the [ Package Explorer ] window) and selecting Run As Java Application . The expected output in the Eclipse [Console] window, is: Total Points: 1000 Average X: 499.5 (0,0) (1,1) (2,2) (3,3) : : (998,998) (999,999

You can run the application now by right clicking the GuestServlet node (in the [Project Explorer] window) and selecting Run As Run on Server Finish : Since we are using ObjectDB in embedded mode - the database file is created under the Tomcat directory. You can stop the Tomcat server and open