About null

tutorial

Step 4: Add a Servlet Class

Explains how to define an EJB session bean in an Eclipse Java EE 6 web application.... ) ; if ( name != null ) guestDao. persist ( new Guest ( ...

 
forum_thread

Object explorer cannot open odb file. ObjectDB many-to-many relationship

I created a data model to test many-to-many relationship with a link table as following (full code in attachement) ... Explorer (Message: "Cannot open file 'demo.odb' null").  Note: I'm using Windows 7 64 bits. ...

 
api-jpa

javax.persistence.metamodel.MappedSuperclassType

Instances of the type MappedSuperclassType represent mapped superclass types.(Interface of JPA)

 
forum_thread

Version 2.2.7 build 7/8 issue

Hi all, I have problems with builds 7 and 8 when trying to sort entities with mappedBy and my own method in query. This query "SELECT c FROM Customer c order by c.getNormalizedName()" returns List with null objects! With builds 6 and 5 works it correctly. Removing mappedBy from @OneToOne(mappedBy = "address") also helps. My code: ... c order by c.getNormalizedName()" returns List with null objects! With builds 6 and 5 works it correctly. Removing mappedBy ...

 
api-jpa

getAlias()

Return the alias assigned to the tuple element or null, if no alias has been assigned.(Method of javax.persistence.TupleElement)

 
api-jpa

javax.persistence.InheritanceType

Defines inheritance strategy options.(Enum of JPA)

 
api-jdo

valueOf(name)

Returns the enum constant of this type with the specified name.(Static Method of javax.jdo.ObjectState)

 
doc

Exception(message, cause)

Constructs a new exception with the specified detail message and cause.(Constructor of java.lang.Exception)

 
api-jpa

NoResultException()

Constructs a new NoResultException exception with null as its detail message.(Constructor of javax.persistence.NoResultException)

 
api-jdo

nonBinaryCompatibleIs(pc, sibr)

Determine the state of a non-binary-compatible instance.(Method of javax.jdo.spi.JDOImplHelper)