Some applications might prefer to use instance methods instead of static methods.

Return the singleton instance of JDOHelper. This instance is thread-safe.

Return a copy of the JDO identity associated with the parameter instance.

Persistent instances of PersistenceCapable classes have a JDO identity managed by the PersistenceManager. This method returns a copy of the ObjectId that represents the JDO identity.

Transient instances and instances of classes that do not implement PersistenceCapable return null.

The ObjectId may be serialized and later restored, and used with a PersistenceManager from the same JDO implementation to locate a persistent instance with the same data store identity.

If the JDO identity is managed by the application, then the ObjectId may be used with a PersistenceManager from any JDO implementation that supports the PersistenceCapable class.

If the JDO identity is not managed by the application or the data store, then the ObjectId returned is only valid within the current transaction.

Get object ids for an array of instances. For each instance in the parameter, the getObjectId method is called. This method returns one identity instance for each element in the parameter. The order of instances of the returned array exactly matches the order of instances of the parameter array.

Get object ids for a collection of instances. For each instance in the parameter, the getObjectId method is called. This method returns one identity instance for each element in the parameter. The order of iteration of the returned Collection exactly matches the order of iteration of the parameter Collection.

Accessor for the state of the passed object.

Return the associated PersistenceManager if there is one. Transactional and persistent instances return the associated PersistenceManager.

Transient non-transactional instances and instances of classes that do not implement PersistenceCapable return null.

Get the anonymous PersistenceManagerFactory configured via the standard configuration file resource "META-INF/jdoconfig.xml", using the current thread's context class loader to locate the configuration file resource(s).

Get a PersistenceManagerFactory based on a Properties instance, using the current thread's context class loader to locate the PersistenceManagerFactory class.

Returns a PersistenceManagerFactory configured based on the properties stored in the file at propsFile. This method is equivalent to invoking getPersistenceManagerFactory(File,ClassLoader) with Thread.currentThread().getContextClassLoader() as the loader argument.

Returns a named PersistenceManagerFactory or persistence unit.

Returns a named PersistenceManagerFactory or persistence unit.

Get the anonymous PersistenceManagerFactory configured via the standard configuration file resource "META-INF/jdoconfig.xml", using the given class loader.

Returns a PersistenceManagerFactory configured based on the Properties stored in the input stream at stream. This method is equivalent to invoking getPersistenceManagerFactory(InputStream,ClassLoader) with Thread.currentThread().getContextClassLoader() as the loader argument.

Returns a PersistenceManagerFactory at the JNDI location specified by jndiLocation in the context context. If context is null, new InitialContext() will be used. This method is equivalent to invoking getPersistenceManagerFactory(String,Context,ClassLoader) with Thread.currentThread().getContextClassLoader() as the loader argument.

Get a PersistenceManagerFactory based on a Map and a class loader. This method delegates to the getPersistenceManagerFactory method that takes a Map of overrides and a Map of properties, passing null as the overrides parameter.

Returns a PersistenceManagerFactory configured based on the properties stored in the file at propsFile. Creates a PersistenceManagerFactory with loader. Any IOExceptions or FileNotFoundExceptions thrown during resource loading will be wrapped in a JDOFatalUserException.

Returns a named PersistenceManagerFactory or persistence unit.

Returns a named PersistenceManagerFactory or persistence unit.

Returns a PersistenceManagerFactory configured based on the Properties stored in the input stream at stream. Creates a PersistenceManagerFactory with loader. Any IOExceptions thrown during resource loading will be wrapped in a JDOFatalUserException.

Returns a PersistenceManagerFactory at the JNDI location specified by jndiLocation in the context context. If context is null, new InitialContext() will be used. Creates a PersistenceManagerFactory with loader. Any NamingExceptions thrown will be wrapped in a JDOFatalUserException.

Returns a named PersistenceManagerFactory or persistence unit.

Returns a PersistenceManagerFactory configured based on the properties stored in the resource at name, or, if not found, returns a PersistenceManagerFactory with the given name or, if not found, returns a javax.persistence.EntityManagerFactory cast to a PersistenceManagerFactory. If the name given is null or consists only of whitespace, it is interpreted as Constants.ANONYMOUS_PERSISTENCE_MANAGER_FACTORY_NAME. The following are standard key names:
"javax.jdo.PersistenceManagerFactoryClass"
"javax.jdo.option.Optimistic",
"javax.jdo.option.RetainValues",
"javax.jdo.option.RestoreValues",
"javax.jdo.option.IgnoreCache",
"javax.jdo.option.NontransactionalRead",
"javax.jdo.option.NontransactionalWrite",
"javax.jdo.option.Multithreaded",
"javax.jdo.option.ConnectionUserName",
"javax.jdo.option.ConnectionPassword",
"javax.jdo.option.ConnectionURL",
"javax.jdo.option.ConnectionFactoryName",
"javax.jdo.option.ConnectionFactory2Name",
"javax.jdo.option.Mapping",
"javax.jdo.mapping.Catalog",
"javax.jdo.mapping.Schema",
"javax.jdo.option.PersistenceUnitName".
"javax.jdo.option.DetachAllOnCommit".
"javax.jdo.option.CopyOnAttach".
"javax.jdo.option.TransactionType".
"javax.jdo.option.ServerTimeZoneID".
"javax.jdo.option.Name". and properties of the form
javax.jdo.option.InstanceLifecycleListener.{listenerClass}[=[{pcClasses}]] where {listenerClass} is the fully qualified name of a class that implements javax.jdo.listener.InstanceLifecycleListener, and {pcClasses} is an optional comma- or whitespace-delimited list of persistence-capable classes to be observed; the absence of a value for a property of this form means that instances of all persistence-capable classes will be observed by an instance of the given listener class.

JDO implementations are permitted to define key values of their own. Any key values not recognized by the implementation must be ignored. Key values that are recognized but not supported by an implementation must result in a JDOFatalUserException thrown by the method.

The returned PersistenceManagerFactory is not configurable (the setXXX methods will throw an exception). This method loads the properties found at name, if any, via resourceLoader, and creates a PersistenceManagerFactory with pmfLoader. Any exceptions thrown during resource loading will be wrapped in a JDOFatalUserException. If multiple PMFs with the requested name are found, a JDOFatalUserException is thrown.

Return a copy of the JDO identity associated with the parameter instance.

Return the version of the instance.

Tests whether the parameter instance has been deleted. Instances that have been deleted in the current transaction return true.

Transient instances and instances of classes that do not implement PersistenceCapable return false.

Tests whether the parameter instance has been detached. Instances that have been detached return true.

Transient instances return false.

Tests whether the parameter instance is dirty. Instances that have been modified, deleted, or newly made persistent in the current transaction return true.

Transient instances and instances of classes that do not implement PersistenceCapable return false.

Tests whether the parameter instance has been newly made persistent. Instances that have been made persistent in the current transaction return true.

Transient instances and instances of classes that do not implement PersistenceCapable return false.

Tests whether the parameter instance is persistent. Instances that represent persistent objects in the data store return true.

Transient instances and instances of classes that do not implement PersistenceCapable return false.

Tests whether the parameter instance is transactional. Instances whose state is associated with the current transaction return true.

Transient instances and instances of classes that do not implement PersistenceCapable return false.

Explicitly mark the parameter instance and field dirty. Normally, PersistenceCapable classes are able to detect changes made to their fields. However, if a reference to an array is given to a method outside the class, and the array is modified, then the persistent instance is not aware of the change. This API allows the application to notify the instance that a change was made to a field.

Transient instances and instances of classes that do not implement PersistenceCapable ignore this method.