Module org.eclipse.persistence.core

Package org.eclipse.persistence.sessions.remote

Class DistributedSession

java.lang.Object

org.eclipse.persistence.internal.core.sessions.CoreAbstractSession<ClassDescriptor,Login,Platform,Project,SessionEventManager>

org.eclipse.persistence.internal.sessions.AbstractSession

org.eclipse.persistence.internal.sessions.DatabaseSessionImpl

org.eclipse.persistence.sessions.remote.DistributedSession

All Implemented Interfaces:

Serializable, Cloneable, CoreSession<ClassDescriptor,Login,Platform,Project,SessionEventManager>, CommandProcessor, DatabaseSession, Session

Direct Known Subclasses:

RemoteSession

public abstract class DistributedSession
extends DatabaseSessionImpl

Purpose: Super class to all remote client session's.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	hasDefaultReadOnlyClasses	Cache if default classes have been read from server.
protected boolean	isMetadataRemote	Define if meta-data is initialized locally, or serialized from the server.
protected RemoteConnection	remoteConnection	Connection to remote persistence service.

Fields inherited from class org.eclipse.persistence.internal.sessions.DatabaseSessionImpl

connectedTime, databaseEventListener, isLoggedIn, sequencingHome, serverPlatform, tuner

Fields inherited from class org.eclipse.persistence.internal.sessions.AbstractSession

accessors, activeCommandThreads, attributeGroups, broker, commandManager, commitManager, defaultReferenceMode, deferredEvents, descriptors, eventManager, exceptionHandler, externalTransactionController, identityMapAccessor, injectionManager, integrityChecker, isConcurrent, isExecutingEvents, isFinalizersEnabled, isInBroker, isInProfile, isLoggingOff, isSynchronized, jpaQueriesProcessed, lastDescriptorAccessed, logSessionString, metadatalistener, multitenantContextProperties, name, numberOfActiveUnitsOfWork, objectsLockedForClone, partitioningPolicy, pessimisticLockTimeoutDefault, pessimisticLockTimeoutUnitDefault, platform, profiler, project, properties, queries, queryBuilder, queryTimeoutDefault, queryTimeoutUnitDefault, serializer, sessionLog, shouldCheckWriteLock, shouldOptimizeResultSetAccess, shouldPropagateChanges, staticMetamodelClasses, tablePerTenantDescriptors, tablePerTenantQueries, tolerateInvalidJPQL, transactionMutex, wasJTSTransactionInternallyStarted

Fields inherited from interface org.eclipse.persistence.sessions.coordination.CommandProcessor

LOG_DEBUG, LOG_ERROR, LOG_INFO, LOG_WARNING

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	DistributedSession(int nothing)	INTERNAL: Create a blank session, used for proxy session.
protected	DistributedSession(RemoteConnection remoteConnection)	PUBLIC: Creates a DistributedSession.

Method Summary

Modifier and Type	Method	Description
abstract UnitOfWorkImpl	acquireUnitOfWork()	PUBLIC: Return a unit of work for this session.
void	beginTransaction()	PUBLIC: Start a transaction on the server.
void	commitTransaction()	PUBLIC: Commit a transaction on the server.
void	connect()	INTERNAL: Connect not required.
RemoteCursoredStream	cursorSelectObjects(CursoredStreamPolicy policy)	INTERNAL: Return remote cursor stream.
RemoteScrollableCursor	cursorSelectObjects(ScrollableCursorPolicy policy)	INTERNAL: Return remote scrollable cursor
void	disconnect()	INTERNAL: Disconnect not required.
Object	executeQuery(String queryName)	PUBLIC: Execute the pre-defined query by name and return the result.
Object	executeQuery(String queryName, Class<?> domainClass)	PUBLIC: Execute the pre-defined query by name and return the result.
Object	executeQuery(String queryName, Class<?> domainClass, Vector argumentValues)	PUBLIC: Execute the pre-defined query by name and return the result.
Object	executeQuery(String queryName, Vector argumentValues)	PUBLIC: Execute the pre-defined query by name and return the result.
abstract Object	executeQuery(DatabaseQuery query)	Execute the database query.
Object	executeQuery(DatabaseQuery query, AbstractRecord row)	INTERNAL: Execute the database query.
Vector	getDefaultReadOnlyClasses()	INTERNAL: CR#2751 Returns the set of read-only classes for the receiver.
ClassDescriptor	getDescriptor(Class<?> domainClass)	INTERNAL: Return the table descriptor specified for the class.
ClassDescriptor	getDescriptorCorrespondingTo(ClassDescriptor descriptor)	INTERNAL: Return the descriptor.
ClassDescriptor	getDescriptorForAlias(String alias)	INTERNAL: Return the table descriptor specified for the class.
abstract Object	getObjectCorrespondingTo(Object serverSideDomainObject, Map<Object,ObjectDescriptor> objectDescriptors, Map<Object,Object> processedObjects, ObjectLevelReadQuery query)	INTERNAL: Return the corresponding objects from the remote session for the objects read from the server.
abstract Object	getObjectsCorrespondingToAll(Object serverSideDomainObjects, Map<Object,ObjectDescriptor> objectDescriptors, Map<Object,Object> processedObjects, ObjectLevelReadQuery query, ContainerPolicy containerPolicy)	INTERNAL: Return the corresponding objects from the remote session for the objects read from the server.
RemoteConnection	getRemoteConnection()	INTERNAL: Return the remote connection.
boolean	hasCorrespondingDescriptor(ClassDescriptor descriptor)	INTERNAL: Checks if the descriptor exists or not.
void	initializeIdentityMapAccessor()	INTERNAL: Set up the IdentityMapManager.
abstract Object	instantiateRemoteValueHolderOnServer(RemoteValueHolder remoteValueHolder)	INTERNAL: This will instantiate value holder on the server.
boolean	isConnected()	PUBLIC: Return if this session is connected to the server.
boolean	isDistributedSession()	INTERNAL: Return if this session is a distributed session.
boolean	isMetadataRemote()	ADVANCED: Return if the descriptors and meta-data should be serialized from the server, or if they will be provided locally.
boolean	isRemoteSession()	INTERNAL: Return if this session is a remote session.
void	login()	PUBLIC: Connect to the database using the predefined login.
void	loginAndDetectDatasource()	PUBLIC: Connect to the database using the predefined login.
void	logout()	PUBLIC: Logout the session, close the remote connection and release the hold resources
void	privilegedAddDescriptor(ClassDescriptor descriptor)	INTERNAL: You cannot add descriptors to a remote session.
void	rollbackTransaction()	PUBLIC: Rollback a transaction on the server.
void	setIsMetadataRemote(boolean isMetadataRemote)	ADVANCED: Set if the descriptors and meta-data should be serialized from the server, or if they will be provided locally.
void	setRemoteConnection(RemoteConnection remoteConnection)	INTERNAL: Set the remote connection.
String	toString()	PUBLIC: Avoid printing the accessor and platform.

Methods inherited from class org.eclipse.persistence.internal.sessions.DatabaseSessionImpl

addDescriptor, addDescriptors, addDescriptors, addDescriptorsToSequencing, addSequence, finalize, getConnectedTime, getDatabaseEventListener, getDatasourcePlatform, getPlatform, getPlatform, getReadLogin, getSequencing, getSequencingControl, getSequencingHome, getServerPlatform, getTuner, initializeConnectedTime, initializeDescriptorIfSessionAlive, initializeDescriptors, initializeDescriptors, initializeDescriptors, initializeDescriptors, initializeDescriptors, initializeSequencing, isDatabaseSession, isLoggedIn, isProtectedSession, isSequencingCallbackRequired, login, login, postConnectDatasource, postLogin, preConnectDatasource, releaseJTSConnection, retryQuery, setDatabaseEventListener, setDatasourceAndInitialize, setOrDetectDatasource, setSequencingHome, setServerPlatform, setTuner, writeAllObjects, writeAllObjects

Methods inherited from class org.eclipse.persistence.internal.sessions.AbstractSession

acquireHistoricalSession, acquireNonSynchronizedUnitOfWork, acquireNonSynchronizedUnitOfWork, acquireRepeatableWriteUnitOfWork, acquireUnitOfWork, addAlias, addJPAQuery, addJPATablePerTenantQuery, addMultitenantContextProperty, addQuery, addQuery, addQuery, addStaticMetamodelClass, addTablePerTenantDescriptor, addTablePerTenantQuery, basicBeginTransaction, basicBeginTransaction, basicCommitTransaction, basicExecuteCall, basicRollbackTransaction, beginExternalTransaction, buildDefaultQueryBuilder, checkAndRefreshInvalidObject, checkHierarchyForDescriptor, cleanUpInjectionManager, clearDescriptors, clearIntegrityChecker, clearLastDescriptorAccessed, clearProfile, clone, commitExternalTransaction, compareObjects, compareObjectsDontMatch, config, containsQuery, copy, copy, copyDescriptorNamedQueries, copyDescriptorsFromProject, copyInternal, copyReadOnlyClasses, createCloneQueryValueHolder, createCloneTransformationValueHolder, createInjectionManager, createProtectedInstanceFromCachedData, deferEvent, deleteAllObjects, deleteObject, doesObjectExist, dontLogMessages, endOperationProfile, endOperationProfile, executeCall, executeDeferredEvents, executeNonSelectingCall, executeNonSelectingSQL, executeQuery, executeQuery, executeQuery, executeQuery, executeQuery, executeQuery, executeQuery, executeQuery, executeQuery, executeQuery, executeSelectingCall, executeSQL, fine, finer, finest, getAccessor, getAccessors, getAccessors, getActiveCommandThreads, getActiveSession, getActiveUnitOfWork, getAliasDescriptors, getAllQueries, getAsOfClause, getAttributeGroups, getBroker, getCacheKeyFromTargetSessionForMerge, getClassDescriptor, getClassDescriptor, getClassDescriptorForAlias, getCommandManager, getCommitManager, getDatasourceLogin, getDefaultReferenceMode, getDescriptor, getDescriptors, getEventManager, getExceptionHandler, getExceptionHandlerClass, getExecutionSession, getExternalTransactionController, getId, getIdentityMapAccessor, getIdentityMapAccessorInstance, getInjectionManager, getIntegrityChecker, getJPAQueries, getJPATablePerTenantQueries, getLoader, getLog, getLogin, getLogLevel, getLogLevel, getLogSessionString, getMappedSuperclass, getMultitenantContextProperties, getName, getNextQueryId, getNextSequenceNumberValue, getNumberOfActiveUnitsOfWork, getParent, getParentIdentityMapSession, getParentIdentityMapSession, getParentIdentityMapSession, getPartitioningPolicy, getPessimisticLockTimeoutDefault, getPessimisticLockTimeoutUnitDefault, getProfiler, getProject, getProperties, getProperty, getQueries, getQuery, getQuery, getQuery, getQuery, getQueryBuilder, getQueryTimeoutDefault, getQueryTimeoutUnitDefault, getRefreshMetadataListener, getRootSession, getSerializer, getSessionForClass, getSessionForName, getSessionLog, getSessionTypeString, getStaticMetamodelClass, getTablePerTenantDescriptors, getTablePerTenantQueries, getTransactionMutex, handleException, handleSevere, hasBroker, hasCommitManager, hasDescriptor, hasEventManager, hasExceptionHandler, hasExternalTransactionController, hasProperties, hasTablePerTenantDescriptors, hasTablePerTenantQueries, incrementProfile, incrementProfile, info, insertObject, internalExecuteQuery, isBroker, isClassReadOnly, isClassReadOnly, isClientSession, isConcurrent, isConsideredInvalid, isExclusiveConnectionRequired, isExclusiveIsolatedClientSession, isFinalizersEnabled, isHistoricalSession, isInBroker, isInProfile, isInTransaction, isIsolatedClientSession, isJPAQueriesProcessed, isLoggingOff, isRemoteUnitOfWork, isServerSession, isSessionBroker, isSynchronized, isUnitOfWork, keyFromObject, load, load, log, log, log, log, log, log, log, log, logMessage, logMessage, logThrowable, postAcquireConnection, prepareDatabaseQuery, preReleaseConnection, priviledgedExecuteNonSelectingCall, priviledgedExecuteSelectingCall, processCommand, processJPAQueries, processJPAQuery, readAllObjects, readAllObjects, readAllObjects, readAllObjects, readObject, readObject, readObject, readObject, readObject, refreshAndLockObject, refreshAndLockObject, refreshObject, registerFinalizer, release, releaseConnectionAfterCall, releaseReadConnection, releaseUnitOfWork, removeProperty, removeQuery, removeQuery, retrieveCacheKey, retryTransaction, rollbackExternalTransaction, setAccessor, setBroker, setCommandManager, setCommitManager, setDatasourceLogin, setDefaultReferenceMode, setEventManager, setExceptionHandler, setExternalTransactionController, setInjectionManager, setIntegrityChecker, setIsConcurrent, setIsFinalizersEnabled, setIsInBroker, setIsInProfile, setJPAQueriesProcessed, setLog, setLoggingOff, setLogin, setLogin, setLogLevel, setName, setNumberOfActiveUnitsOfWork, setPartitioningPolicy, setPessimisticLockTimeoutDefault, setPessimisticLockTimeoutUnitDefault, setProfiler, setProject, setProperties, setProperty, setQueries, setQueryBuilder, setQueryTimeoutDefault, setQueryTimeoutUnitDefault, setRefreshMetadataListener, setSerializer, setSessionLog, setShouldOptimizeResultSetAccess, setShouldPropagateChanges, setSynchronized, setTolerateInvalidJPQL, setTransactionMutex, setWasJTSTransactionInternallyStarted, severe, shouldDisplayData, shouldLog, shouldLogMessages, shouldLogMessages, shouldOptimizeResultSetAccess, shouldPropagateChanges, shouldTolerateInvalidJPQL, startOperationProfile, startOperationProfile, unwrapObject, updateObject, updateProfile, updateTablePerTenantDescriptors, validateCache, validateQuery, verifyDelete, warning, wasJTSTransactionInternallyStarted, wrapObject, writeAllObjectsWithChangeSet, writeObject, writesCompleted

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.persistence.sessions.DatabaseSession

deleteAllObjects, deleteObject, getCommandManager, insertObject, isInTransaction, refreshAndLockObject, refreshAndLockObject, setCommandManager, setDatasourceLogin, setExternalTransactionController, setLogin, setShouldPropagateChanges, shouldPropagateChanges, updateObject, writeObject

Methods inherited from interface org.eclipse.persistence.sessions.Session

acquireHistoricalSession, acquireUnitOfWork, addJPAQuery, addQuery, clearIntegrityChecker, clearProfile, containsQuery, copy, copy, doesObjectExist, dontLogMessages, executeNonSelectingCall, executeNonSelectingSQL, executeQuery, executeQuery, executeQuery, executeQuery, executeQuery, executeQuery, executeQuery, executeQuery, executeQuery, executeSelectingCall, executeSQL, getActiveSession, getActiveUnitOfWork, getAsOfClause, getClassDescriptor, getClassDescriptor, getClassDescriptorForAlias, getDatasourceLogin, getDefaultReferenceMode, getDescriptor, getDescriptors, getEventManager, getExceptionHandler, getExternalTransactionController, getId, getIdentityMapAccessor, getIntegrityChecker, getJPAQueries, getLog, getLogin, getLogLevel, getLogLevel, getName, getNextSequenceNumberValue, getPartitioningPolicy, getProfiler, getProject, getProperties, getProperty, getQueries, getQuery, getQuery, getSerializer, getSessionLog, handleException, handleSevere, hasDescriptor, hasExceptionHandler, hasExternalTransactionController, isClientSession, isFinalizersEnabled, isInProfile, isRemoteUnitOfWork, isServerSession, isSessionBroker, isUnitOfWork, log, logMessage, readAllObjects, readAllObjects, readAllObjects, readObject, readObject, readObject, readObject, refreshObject, release, removeProperty, removeQuery, setDefaultReferenceMode, setExceptionHandler, setIntegrityChecker, setIsFinalizersEnabled, setLog, setLogLevel, setName, setPartitioningPolicy, setProfiler, setProperty, setQueryTimeoutDefault, setQueryTimeoutUnitDefault, setSerializer, setSessionLog, shouldLog, shouldLogMessages, validateCache

Field Details

remoteConnection

protected transient RemoteConnection remoteConnection

Connection to remote persistence service.

hasDefaultReadOnlyClasses

protected boolean hasDefaultReadOnlyClasses

Cache if default classes have been read from server.

isMetadataRemote

protected boolean isMetadataRemote

Define if meta-data is initialized locally, or serialized from the server.

Constructor Details

DistributedSession

protected DistributedSession(int nothing)

INTERNAL: Create a blank session, used for proxy session.

DistributedSession

protected DistributedSession(RemoteConnection remoteConnection)

PUBLIC: Creates a DistributedSession.

Parameters:

remoteConnection - remote session requires a remote connection. This must be accessed remotely from the client through RMI or CORBA.

Method Details

acquireUnitOfWork

public abstract UnitOfWorkImpl acquireUnitOfWork()

PUBLIC: Return a unit of work for this session. The unit of work is an object level transaction that allows a group of changes to be applied as a unit.

Specified by:

acquireUnitOfWork in interface Session

Overrides:

acquireUnitOfWork in class AbstractSession

See Also:

• UnitOfWorkImpl

beginTransaction

public void beginTransaction()

PUBLIC: Start a transaction on the server. A unit of work should normally be used instead of transactions for the remote session.

Specified by:

beginTransaction in interface DatabaseSession

Overrides:

beginTransaction in class AbstractSession

See Also:

• AbstractSession.isInTransaction()

commitTransaction

public void commitTransaction()

PUBLIC: Commit a transaction on the server. A unit of work should normally be used instead of transactions for the remote session.

Specified by:

commitTransaction in interface DatabaseSession

Overrides:

commitTransaction in class AbstractSession

cursorSelectObjects

public RemoteCursoredStream cursorSelectObjects(CursoredStreamPolicy policy)

INTERNAL: Return remote cursor stream.

cursorSelectObjects

public RemoteScrollableCursor cursorSelectObjects(ScrollableCursorPolicy policy)

INTERNAL: Return remote scrollable cursor

executeQuery

public Object executeQuery(String queryName)
                    throws DatabaseException

PUBLIC: Execute the pre-defined query by name and return the result. Queries can be pre-defined and named to allow for their reuse. The named query can be defined on the remote session or the server-side session.

Specified by:

executeQuery in interface Session

Overrides:

executeQuery in class AbstractSession

Throws:

DatabaseException

See Also:

• AbstractSession.addQuery(String, DatabaseQuery)

executeQuery

public Object executeQuery(String queryName,
 Class<?> domainClass)
                    throws DatabaseException

PUBLIC: Execute the pre-defined query by name and return the result. Queries can be pre-defined and named to allow for their reuse. The class is the descriptor in which the query was pre-defined. The query is executed on the server-side session.

Specified by:

executeQuery in interface Session

Overrides:

executeQuery in class AbstractSession

Throws:

DatabaseException

See Also:

• DescriptorQueryManager.addQuery(String, DatabaseQuery)

executeQuery

public Object executeQuery(String queryName,
 Class<?> domainClass,
 Vector argumentValues)
                    throws DatabaseException

PUBLIC: Execute the pre-defined query by name and return the result. Queries can be pre-defined and named to allow for their reuse. The class is the descriptor in which the query was pre-defined.

Overrides:

executeQuery in class AbstractSession

Throws:

DatabaseException

See Also:

• DescriptorQueryManager.addQuery(String, DatabaseQuery)

executeQuery

public Object executeQuery(String queryName,
 Vector argumentValues)
                    throws DatabaseException

PUBLIC: Execute the pre-defined query by name and return the result. Queries can be pre-defined and named to allow for their reuse.

Overrides:

executeQuery in class AbstractSession

Throws:

DatabaseException

See Also:

• AbstractSession.addQuery(String, DatabaseQuery)

executeQuery

public abstract Object executeQuery(DatabaseQuery query)

Execute the database query.

Specified by:

executeQuery in interface Session

Overrides:

executeQuery in class AbstractSession

See Also:

• DatabaseQuery

executeQuery

public Object executeQuery(DatabaseQuery query,
 AbstractRecord row)

INTERNAL: Execute the database query.

Overrides:

executeQuery in class AbstractSession

getDefaultReadOnlyClasses

public Vector getDefaultReadOnlyClasses()

INTERNAL: CR#2751 Returns the set of read-only classes for the receiver. These class come from the Remote connection

Overrides:

getDefaultReadOnlyClasses in class AbstractSession

Returns:

A Vector containing the Java Classes that are currently read-only.

See Also:

• Project.setDefaultReadOnlyClasses(Collection)

getDescriptor

public ClassDescriptor getDescriptor(Class<?> domainClass)

INTERNAL: Return the table descriptor specified for the class.

Specified by:

getDescriptor in interface CoreSession<ClassDescriptor,Login,Platform,Project,SessionEventManager>

Specified by:

getDescriptor in interface Session

Overrides:

getDescriptor in class AbstractSession

getDescriptorForAlias

public ClassDescriptor getDescriptorForAlias(String alias)

INTERNAL: Return the table descriptor specified for the class.

Specified by:

getDescriptorForAlias in interface Session

Overrides:

getDescriptorForAlias in class AbstractSession

Parameters:

alias - The descriptor alias.

Returns:

The descriptor for the alias or null if no descriptor was found.

getDescriptorCorrespondingTo

public ClassDescriptor getDescriptorCorrespondingTo(ClassDescriptor descriptor)

INTERNAL: Return the descriptor.

getObjectCorrespondingTo

public abstract Object getObjectCorrespondingTo(Object serverSideDomainObject,
 Map<Object,ObjectDescriptor> objectDescriptors,
 Map<Object,Object> processedObjects,
 ObjectLevelReadQuery query)

INTERNAL: Return the corresponding objects from the remote session for the objects read from the server.

getObjectsCorrespondingToAll

public abstract Object getObjectsCorrespondingToAll(Object serverSideDomainObjects,
 Map<Object,ObjectDescriptor> objectDescriptors,
 Map<Object,Object> processedObjects,
 ObjectLevelReadQuery query,
 ContainerPolicy containerPolicy)

INTERNAL: Return the corresponding objects from the remote session for the objects read from the server.

getRemoteConnection

public RemoteConnection getRemoteConnection()

INTERNAL: Return the remote connection.

hasCorrespondingDescriptor

public boolean hasCorrespondingDescriptor(ClassDescriptor descriptor)

INTERNAL: Checks if the descriptor exists or not.

initializeIdentityMapAccessor

public void initializeIdentityMapAccessor()

INTERNAL: Set up the IdentityMapManager. Overrides the default IdentityMapManager

Overrides:

initializeIdentityMapAccessor in class AbstractSession

instantiateRemoteValueHolderOnServer

public abstract Object instantiateRemoteValueHolderOnServer(RemoteValueHolder remoteValueHolder)

INTERNAL: This will instantiate value holder on the server.

isConnected

public boolean isConnected()

PUBLIC: Return if this session is connected to the server.

Specified by:

isConnected in interface Session

Overrides:

isConnected in class AbstractSession

isDistributedSession

public boolean isDistributedSession()

INTERNAL: Return if this session is a distributed session.

Specified by:

isDistributedSession in interface Session

Overrides:

isDistributedSession in class AbstractSession

isRemoteSession

public boolean isRemoteSession()

INTERNAL: Return if this session is a remote session.

Specified by:

isRemoteSession in interface Session

Overrides:

isRemoteSession in class AbstractSession

privilegedAddDescriptor

public void privilegedAddDescriptor(ClassDescriptor descriptor)

INTERNAL: You cannot add descriptors to a remote session. This is a internal method used by TopLink

rollbackTransaction

public void rollbackTransaction()

PUBLIC: Rollback a transaction on the server. A unit of work should normally be used instead of transactions for the remote session.

Specified by:

rollbackTransaction in interface DatabaseSession

Overrides:

rollbackTransaction in class AbstractSession

setRemoteConnection

public void setRemoteConnection(RemoteConnection remoteConnection)

INTERNAL: Set the remote connection.

toString

public String toString()

PUBLIC: Avoid printing the accessor and platform.

Overrides:

toString in class AbstractSession

logout

public void logout()

PUBLIC: Logout the session, close the remote connection and release the hold resources

Specified by:

logout in interface DatabaseSession

Overrides:

logout in class DatabaseSessionImpl

isMetadataRemote

public boolean isMetadataRemote()

ADVANCED: Return if the descriptors and meta-data should be serialized from the server, or if they will be provided locally.

setIsMetadataRemote

public void setIsMetadataRemote(boolean isMetadataRemote)

ADVANCED: Set if the descriptors and meta-data should be serialized from the server, or if they will be provided locally.

connect

public void connect()
             throws DatabaseException

INTERNAL: Connect not required.

Overrides:

connect in class DatabaseSessionImpl

Throws:

DatabaseException

disconnect

public void disconnect()
                throws DatabaseException

INTERNAL: Disconnect not required.

Overrides:

disconnect in class DatabaseSessionImpl

Throws:

DatabaseException

loginAndDetectDatasource

public void loginAndDetectDatasource()
                              throws DatabaseException

PUBLIC: Connect to the database using the predefined login. During connection, attempt to auto detect the required database platform. This method can be used in systems where for ease of use developers have EclipseLink autodetect the platform. To be safe, however, the platform should be configured directly. The login must have been assigned when or after creating the session.

Overrides:

loginAndDetectDatasource in class DatabaseSessionImpl

Throws:

DatabaseException

login

public void login()
           throws DatabaseException

PUBLIC: Connect to the database using the predefined login. Obtain the login from the server, as it may have configuration initialized from the database meta-data.

Specified by:

login in interface DatabaseSession

Overrides:

login in class DatabaseSessionImpl

Throws:

DatabaseException

See Also:

• DatabaseSessionImpl.login(Login)