86 | setting activation code in persistence.xml or env file or system propertiessetting activation code in persistence.xml or env file or system properties |
15 | Query Parameters in JPA for a real value. Before the query can be executed a parameter value has to be set using the setParameter ... multiple times in the query string. A query can be run only after setting values for all its parameters ... , which generally excels in its thin and simple API. There are 9 methods for setting parameters in a query |
14 | Shared (L2) Entity Cache instances of the same database - including on different client machines. Setting the Shared Cache ... has to be specified. Persistence Unit Settings The shared cache can also be enabled or disabled using a persistence ... > ... </persistence-unit> The javax.persistence.sharedCache.mode property can be set to one of the following values |
13 | JPA Entity Fields provider (such as Hibernate) or to change default field settings. For example: @Entity public class ... . Cascade and fetch settings are explained in chapter 3. A persistent field whose type is embeddable ... ; } @Entity public class Department { @OneToMany(mappedBy="department") Set<Employee> employees |
12 | JPA Metamodel API to retrieve sets of types: // Get all the managed classes: // (entity classes, embeddable classes, mapped super classes) Set<ManagedType> allManagedTypes = metamodel.getManagedTypes(); // Get all the entity classes: Set<EntityType> allEntityTypes = metamodel.getEntities |
12 | Locking in JPA - which represents an exclusive lock. Setting a Pessimistic Lock An entity object can be locked ... can be set to allow waiting for a pessimistic lock for a specified number of milliseconds. The hint can be set in several scopes: For the entire persistence unit - using a persistence.xml property |
12 | BIRT/ODA ObjectDB Driver Tools (BIRT) that adds support of ObjectDB as a data source and JPQL as a data set query language ... Sets and JPQL To create the data set: Open the [New Data Set] dialog box by right clicking the Data Sets node in the [Data Explorer] window and selecting New Data Set. Select an ObjectDB data source |
1 | [ODB1] Chapter 8 - ObjectDB Server this setting using the –port command line option to specify another port, as shown below: > java ... , <server> and <users>. The <server> sub element specifies general server settings, and the <users> sub ... will be listening for new connections. Usually, it should be set to 6136, which is the default port |
1 | javax.jdo.PersistenceManagerFactory be configured. If the ConnectionFactory property is set (non-null) then all other Connection properties including ConnectionFactoryName are ignored; otherwise, if ConnectionFactoryName is set (non-null ... is set (non-null) then ConnectionFactory2Name is ignored. Operational state (PersistenceManager pooling |
1 | [ODB1] Chapter 5 - JDO Connections of the database requires an active transaction. The focus of this chapter is on setting up a runtime ... that are set in the code above are usually essential: javax.jdo.PersistenceManagerFactoryClass ... five optional modes for working with transactions, represented by five flags that can be set or cleared |
