About store

forum_thread

Using of Second Level Cache

In our use case we want to find some entity types always again very quickly by primary key or query in many short transactions. The entity MyEntity1 and its relationships to MyEntity2/MyEntity3 was load and the entity MyEntity1 is taken in the second level cache, the other entity types not. Are the relationships to MyEntity2/MyEntity3 still always referenced although the entity manager is closed, so that the memory for MyEntity2 and MyEntity3 can never be released by garbage collector? #1 2016-06-22 08:04 In our use case we want to find some entity types always again very quickly by primary key or query in many short ...

 
tutorial

Step 3: Define a Spring DAO Component

Explains how to define a JPA DAO component (bean) in an Eclipse Spring MVC JPA web application project. Operations on the database will be performed by an instance of a Data Access Object (DAO) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right clicking the guest packa ...

 
api-jdo

Value.column

Name of the column to store the value in.(Annotation Element of javax.jdo.annotations.Value)

 
api-jdo

Key.serialized

Whether the key is to be stored serialized (into a single column of a join table).(Annotation Element of javax.jdo.annotations.Key)

 
api-jdo

getObjectId(pc)

Return a copy of the JDO identity associated with the parameter instance.(Method of javax.jdo.spi.StateInterrogation)

 
api-jpa

TableGenerator.initialValue

(Optional) The initial value to be used to initialize the column that stores the last value generated.(Annotation Element of javax.persistence.TableGenerator)

 
api-jdo

getConnectionFactory2Name()

Get the name for the second data store connection factory.(Method of javax.jdo.PersistenceManagerFactory)

 
api-jdo

setConnectionUserName(userName)

Set the user name for the data store connection.(Method of javax.jdo.PersistenceManagerFactory)

 
api-jdo

setConnectionDriverName(driverName)

Set the driver name for the data store connection.(Method of javax.jdo.PersistenceManagerFactory)

 
api-jdo

fetchObjectField(fieldNumber)

Fetch one field from the field manager.(Method of javax.jdo.spi.PersistenceCapable.ObjectIdFieldSupplier)