org.apache.jackrabbit.core
Class TransientRepository

java.lang.Object
  org.apache.jackrabbit.core.TransientRepository

All Implemented Interfaces:

javax.jcr.Repository, JackrabbitRepository, SessionListener

public class TransientRepository
extends java.lang.Object
implements JackrabbitRepository, SessionListener

A repository proxy that automatically initializes and shuts down the underlying repository instance when the first session is opened or the last one closed. As long as all sessions are properly closed when no longer used, this class can be used to avoid having to explicitly shut down the repository.

Nested Class Summary

static interface

TransientRepository.RepositoryFactory Factory interface for creating RepositoryImpl instances.

Field Summary

Fields inherited from interface javax.jcr.Repository

LEVEL_1_SUPPORTED, LEVEL_2_SUPPORTED, OPTION_LOCKING_SUPPORTED, OPTION_OBSERVATION_SUPPORTED, OPTION_QUERY_SQL_SUPPORTED, OPTION_TRANSACTIONS_SUPPORTED, OPTION_VERSIONING_SUPPORTED, QUERY_XPATH_DOC_ORDER, QUERY_XPATH_POS_INDEX, REP_NAME_DESC, REP_VENDOR_DESC, REP_VENDOR_URL_DESC, REP_VERSION_DESC, SPEC_NAME_DESC, SPEC_VERSION_DESC

Constructor Summary

TransientRepository()
Creates a transient repository proxy that will use the repository configuration file and home directory specified in system properties org.apache.jackrabbit.repository.conf and org.apache.jackrabbit.repository.home.

TransientRepository(RepositoryConfig config)
Creates a transient repository proxy that will use the given repository configuration to initialize the underlying repository instance.

TransientRepository(java.lang.String config, java.lang.String home)
Creates a transient repository proxy that will use the given repository configuration file and home directory paths to initialize the underlying repository instances.

TransientRepository(TransientRepository.RepositoryFactory factory)
Creates a transient repository proxy that will use the given repository factory to initialize the underlying repository instances.

Method Summary

java.lang.String	getDescriptor(java.lang.String key) Returns the identified repository descriptor.
java.lang.String[]	getDescriptorKeys() Returns the available descriptor keys.
void	loggedOut(SessionImpl session) Removes the given session from the set of open sessions.
void	loggingOut(SessionImpl session) Ignored.
javax.jcr.Session	login() Calls login(Credentials, String) with null login credentials and a null workspace name.
javax.jcr.Session	login(javax.jcr.Credentials credentials) Calls login(Credentials, String) with a null workspace name.
javax.jcr.Session	login(javax.jcr.Credentials credentials, java.lang.String workspaceName) Logs in to the content repository.
javax.jcr.Session	login(java.lang.String workspaceName) Calls login(Credentials, String) with null login credentials.
void	shutdown() Forces all active sessions to logout.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TransientRepository

public TransientRepository(TransientRepository.RepositoryFactory factory)
                    throws java.io.IOException

Creates a transient repository proxy that will use the given repository factory to initialize the underlying repository instances.

Parameters:

factory - repository factory

Throws:

java.io.IOException - if the static repository descriptors cannot be loaded

TransientRepository

public TransientRepository()
                    throws java.io.IOException

Creates a transient repository proxy that will use the repository configuration file and home directory specified in system properties org.apache.jackrabbit.repository.conf and org.apache.jackrabbit.repository.home. If these properties are not found, then the default values "repository.xml" and "repository" are used.

Throws:

java.io.IOException - if the static repository descriptors cannot be loaded

TransientRepository

public TransientRepository(RepositoryConfig config)
                    throws java.io.IOException

Creates a transient repository proxy that will use the given repository configuration to initialize the underlying repository instance.

Parameters:

config - repository configuration

Throws:

java.io.IOException - if the static repository descriptors cannot be loaded

TransientRepository

public TransientRepository(java.lang.String config,
                           java.lang.String home)
                    throws java.io.IOException

Creates a transient repository proxy that will use the given repository configuration file and home directory paths to initialize the underlying repository instances. The repository configuration file is reloaded whenever the repository is restarted, so it is safe to modify the configuration when all sessions have been closed.

If the given repository configuration file does not exist, then a default configuration file is copied to the given location when the first session starts. Similarly, if the given repository home directory does not exist, it is automatically created when the first session starts. This is a convenience feature designed to reduce the need for manual configuration.

Parameters:

config - repository configuration file

home - repository home directory

Throws:

java.io.IOException - if the static repository descriptors cannot be loaded

Method Detail

getDescriptorKeys

public java.lang.String[] getDescriptorKeys()

Returns the available descriptor keys. If the underlying repository is initialized, then the call is proxied to it, otherwise the static descriptor keys are returned.

Specified by:

getDescriptorKeys in interface javax.jcr.Repository

Returns:

descriptor keys

See Also:

Repository#getDescriptorKeys()

getDescriptor

public java.lang.String getDescriptor(java.lang.String key)

Returns the identified repository descriptor. If the underlying repository is initialized, then the call is proxied to it, otherwise the static descriptors are used.

Specified by:

getDescriptor in interface javax.jcr.Repository

Parameters:

key - descriptor key

Returns:

descriptor value

See Also:

Repository#getDescriptor(String)

login

public javax.jcr.Session login(javax.jcr.Credentials credentials,
                               java.lang.String workspaceName)
                        throws javax.jcr.RepositoryException

Logs in to the content repository. Initializes the underlying repository instance if needed. The opened session is added to the set of open sessions and a session listener is added to track when the session gets closed.

Specified by:

login in interface javax.jcr.Repository

Parameters:

credentials - login credentials

workspaceName - workspace name

Returns:

new session

Throws:

javax.jcr.RepositoryException - if the session could not be created

See Also:

Repository#login(Credentials,String)

login

public javax.jcr.Session login(javax.jcr.Credentials credentials)
                        throws javax.jcr.RepositoryException

Calls login(Credentials, String) with a null workspace name.

Specified by:

login in interface javax.jcr.Repository

Parameters:

credentials - login credentials

Returns:

new session

Throws:

javax.jcr.RepositoryException - if the session could not be created

See Also:

Repository#login(Credentials)

login

public javax.jcr.Session login(java.lang.String workspaceName)
                        throws javax.jcr.RepositoryException

Calls login(Credentials, String) with null login credentials.

Specified by:

login in interface javax.jcr.Repository

Parameters:

workspaceName - workspace name

Returns:

new session

Throws:

javax.jcr.RepositoryException - if the session could not be created

See Also:

Repository#login(String)

login

public javax.jcr.Session login()
                        throws javax.jcr.RepositoryException

Calls login(Credentials, String) with null login credentials and a null workspace name.

Specified by:

login in interface javax.jcr.Repository

Returns:

new session

Throws:

javax.jcr.RepositoryException - if the session could not be created

See Also:

Repository#login(Credentials)

shutdown

public void shutdown()

Forces all active sessions to logout. Once the last session has logged out, the underlying repository instance will automatically be shut down.

Specified by:

shutdown in interface JackrabbitRepository

See Also:

Session.logout()

loggedOut

public void loggedOut(SessionImpl session)

Removes the given session from the set of open sessions. If no open sessions remain, then the underlying repository instance is shut down.

Specified by:

loggedOut in interface SessionListener

Parameters:

session - closed session

See Also:

SessionListener.loggedOut(SessionImpl)

loggingOut

public void loggingOut(SessionImpl session)

Ignored. Called when a Session is about to be 'closed' by calling Session.logout()

Specified by:

loggingOut in interface SessionListener

Parameters:

session - the Session that is about to be 'closed'