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The Java Persistence API (JPA) : a standard interface-based Java model abstraction of persistence, developed by the JCP.
/*
* Copyright (c) 2008, 2009, 2011 Oracle, Inc. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution. The Eclipse Public License is available
* at http://www.eclipse.org/legal/epl-v10.html and the Eclipse Distribution License
* is available at http://www.eclipse.org/org/documents/edl-v10.php.
*/
package javax.persistence.spi;
import javax.persistence.SharedCacheMode;
import javax.persistence.ValidationMode;
import javax.sql.DataSource;
import java.net.URL;
import java.util.List;
import java.util.Properties;
/**
* Interface implemented by the container and used by the persistence provider when creating an
* {@link javax.persistence.EntityManagerFactory}.
*/
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
*/
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
*/
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
*/
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();
}
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