javax.persistence.spi.PersistenceUnitInfo Maven / Gradle / Ivy
// $Id: PersistenceUnitInfo.java 17752 2009-10-15 01:19:21Z [email protected] $
// EJB3 Specification Copyright 2004-2009 Sun Microsystems, Inc.
package javax.persistence.spi;
import javax.sql.DataSource;
import java.util.List;
import java.util.Properties;
import java.net.URL;
import javax.persistence.SharedCacheMode;
import javax.persistence.ValidationMode;
/**
* Interface implemented by the container and used by the
* persistence provider when creating an {@link javax.persistence.EntityManagerFactory}.
*
* @since Java Persistence 1.0
*/
public interface PersistenceUnitInfo {
/**
* Returns the name of the persistence unit. Corresponds to the
* name attribute in the persistence.xml file.
*
* @return the name of the persistence unit
*/
public String getPersistenceUnitName();
/**
* Returns the fully qualified name of the persistence provider
* implementation class. Corresponds to the provider element in
* the persistence.xml file.
*
* @return the fully qualified name of the persistence provider
* implementation class
*/
public String getPersistenceProviderClassName();
/**
* Returns the transaction type of the entity managers created by
* the EntityManagerFactory. The transaction type corresponds to
* the transaction-type attribute in the persistence.xml file.
*
* @return transaction type of the entity managers created
* by the EntityManagerFactory
*/
public PersistenceUnitTransactionType getTransactionType();
/**
* Returns the JTA-enabled data source to be used by the
* persistence provider. The data source corresponds to the
* jta-data-source element in the persistence.xml file or is
* provided at deployment or by the container.
*
* @return the JTA-enabled data source to be used by the
* persistence provider
*/
public DataSource getJtaDataSource();
/**
* Returns the non-JTA-enabled data source to be used by the
* persistence provider for accessing data outside a JTA
* transaction. The data source corresponds to the named
* non-jta-data-source element in the persistence.xml file or
* provided at deployment or by the container.
*
* @return the non-JTA-enabled data source to be used by the
* persistence provider for accessing data outside a JTA
* transaction
*/
public DataSource getNonJtaDataSource();
/**
* Returns the list of the names of the mapping files that the
* persistence provider must load to determine the mappings for
* the entity classes. The mapping files must be in the standard
* XML mapping format, be uniquely named and be resource-loadable
* from the application classpath. Each mapping file name
* corresponds to a mapping-file element in the
* persistence.xml file.
*
* @return the list of mapping file names that the persistence
* provider must load to determine the mappings for the entity
* classes
*/
public List getMappingFileNames();
/**
* Returns a list of URLs for the jar files or exploded jar
* file directories that the persistence provider must examine
* for managed classes of the persistence unit. Each URL
* corresponds to a jar-file element in the
* persistence.xml file. A URL will either be a
* file: URL referring to a jar file or referring to a directory
* that contains an exploded jar file, or some other URL from
* which an InputStream in jar format can be obtained.
*
* @return a list of URL objects referring to jar files or
* directories
*/
public List getJarFileUrls();
/**
* Returns the URL for the jar file or directory that is the
* root of the persistence unit. (If the persistence unit is
* rooted in the WEB-INF/classes directory, this will be the
* URL of that directory.)
* The URL will either be a file: URL referring to a jar file
* or referring to a directory that contains an exploded jar
* file, or some other URL from which an InputStream in jar
* format can be obtained.
*
* @return a URL referring to a jar file or directory
*/
public URL getPersistenceUnitRootUrl();
/**
* Returns the list of the names of the classes that the
* persistence provider must add to its set of managed
* classes. Each name corresponds to a named class element in the
* persistence.xml file.
*
* @return the list of the names of the classes that the
* persistence provider must add to its set of managed
* classes
*/
public List getManagedClassNames();
/**
* Returns whether classes in the root of the persistence unit
* that have not been explicitly listed are to be included in the
* set of managed classes. This value corresponds to the
* exclude-unlisted-classes element in the persistence.xml file.
*
* @return whether classes in the root of the persistence
* unit that have not been explicitly listed are to be
* included in the set of managed classes
*/
public boolean excludeUnlistedClasses();
/**
* Returns the specification of how the provider must use
* a second-level cache for the persistence unit.
* The result of this method corresponds to the shared-cache-mode
* element in the persistence.xml file.
*
* @return the second-level cache mode that must be used by the
* provider for the persistence unit
*
* @since Java Persistence 2.0
*/
public SharedCacheMode getSharedCacheMode();
/**
* Returns the validation mode to be used by the persistence
* provider for the persistence unit. The validation mode
* corresponds to the validation-mode element in the
* persistence.xml file.
*
* @return the validation mode to be used by the
* persistence provider for the persistence unit
*
* @since Java Persistence 2.0
*/
public ValidationMode getValidationMode();
/**
* Returns a properties object. Each property corresponds to a
* property element in the persistence.xml file.
*
* @return Properties object
*/
public Properties getProperties();
/**
* Returns the schema version of the persistence.xml file.
*
* @return persistence.xml schema version
*
* @since Java Persistence 2.0
*/
public String getPersistenceXMLSchemaVersion();
/**
* Returns ClassLoader that the provider may use to load any
* classes, resources, or open URLs.
*
* @return ClassLoader that the provider may use to load any
* classes, resources, or open URLs
*/
public ClassLoader getClassLoader();
/**
* Add a transformer supplied by the provider that will be
* called for every new class definition or class redefinition
* that gets loaded by the loader returned by the
* {@link PersistenceUnitInfo#getClassLoader} method. The transformer
* has no effect on the result returned by the
* {@link PersistenceUnitInfo#getNewTempClassLoader} method.
* Classes are only transformed once within the same classloading
* scope, regardless of how many persistence units they may be
* a part of.
*
* @param transformer provider-supplied transformer that the
* container invokes at class-(re)definition time
*/
public void addTransformer(ClassTransformer transformer);
/**
* Return a new instance of a ClassLoader that the provider may
* use to temporarily load any classes, resources, or open
* URLs. The scope and classpath of this loader is exactly the
* same as that of the loader returned by {@link
* PersistenceUnitInfo#getClassLoader}. None of the classes loaded
* by this class loader will be visible to application
* components. The provider may only use this ClassLoader within
* the scope of the {@link
* PersistenceProvider#createContainerEntityManagerFactory} call.
*
* @return temporary ClassLoader with same visibility as current
* loader
*/
public ClassLoader getNewTempClassLoader();
}