com.bea.wli.config.task.impl

Class GetSnapshotTask<T>

java.lang.Object

com.bea.wli.config.task.impl.SessionedTask<Snapshot<T>>

com.bea.wli.config.task.impl.GetSnapshotTask<T>

Type Parameters:

T -

All Implemented Interfaces:

java.util.concurrent.Callable<Snapshot<T>>

public abstract class GetSnapshotTask<T>
extends SessionedTask<Snapshot<T>>

Computes the snapshot of information for resources relative to a given time. The following types of snapshots can be obtained:

• Snapshot of Ref : Contains the set of Ref objects representing the resources that existed at a given time
• Snapshot of Digest : Contains the set of Digest objects for resources that existed at a given time
• Snapshot of CanonicalResource : Contains canonical (in-memory, non-serialized) values of resources that existed at a given time
• Snapshot of PortableResource : Contains portable (serialized) values of resources that existed at a given time.

The snapshot could be further restricted to a set of resource (e.g., all resources under a particular project) by supplying a RefValueDomain.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Date	date
protected RefValueDomain	valueDomain

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GetSnapshotTask(java.lang.String description, RefValueDomain valueDomain, java.util.Date date)

Method Summary

Modifier and Type	Method and Description
protected Snapshot<T>	_execute() Subclasses implement this method
static Snapshot<CanonicalResource>	getCanonicalResourceSnapshot(ConfigService configService, java.lang.String session, RefValueDomain valueDomain, java.util.Date date, boolean getCopy) Returns a snapshot of canonical data for resources that existed with respect to the given time
static Snapshot<Digest>	getDigestSnapshot(ConfigService configService, java.lang.String session, RefValueDomain valueDomain) Returns the current snapshot of Digests for resources
static Snapshot<Digest>	getDigestSnapshot(ConfigService configService, java.lang.String session, RefValueDomain valueDomain, java.util.Date date) Returns a snapshot of digests for resources that existed with respect to the given time
protected ExecRecord	getExecRecord(java.lang.String id)
static Snapshot<PortableResource>	getPortableResourceSnapshot(ConfigService configService, java.lang.String session, RefValueDomain valueDomain, java.util.Date date, PBE_EncryptionService es) Returns a snapshot of portable data for resources that existed with respect to the given time
static Snapshot<Ref>	getRefSnapshot(ConfigService configService, java.lang.String session, RefValueDomain valueDomain, java.util.Date date) Returns a snapshot of references for resources that existed with respect to the given time
protected UndoRecord	getUndoRecord(java.lang.String id)
protected abstract T	getValue(Ref ref, java.lang.String lastTaskId)

Methods inherited from class com.bea.wli.config.task.impl.SessionedTask

assertExists, assertLocation, assertNONResource, assertNotExists, assertNotLocationData, assertNotNull, assertNotNullElement, assertResource, assertSimple, call, doExecute, doExecute, doExecute, doExecute, expand, getConfigContext, getConfigMBean, getConfigService, getDescription, getSession, isLocation, isReadOnlyTransaction, requiresSystemTransaction

Methods inherited from class java.lang.Object

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

Field Detail

valueDomain

protected final RefValueDomain valueDomain

date

protected final java.util.Date date

Constructor Detail

GetSnapshotTask

protected GetSnapshotTask(java.lang.String description,
                          RefValueDomain valueDomain,
                          java.util.Date date)

Method Detail

getValue

protected abstract T getValue(Ref ref,
                              java.lang.String lastTaskId)
                       throws java.lang.Exception

Throws:

java.lang.Exception

_execute

protected Snapshot<T> _execute()
                        throws java.lang.Exception

Description copied from class: SessionedTask

Subclasses implement this method

Specified by:

_execute in class SessionedTask<Snapshot<T>>

Returns:

the result of the execution

Throws:

java.lang.Exception

getRefSnapshot

public static Snapshot<Ref> getRefSnapshot(ConfigService configService,
                                           java.lang.String session,
                                           RefValueDomain valueDomain,
                                           java.util.Date date)
                                    throws java.lang.Exception

Returns a snapshot of references for resources that existed with respect to the given time

Parameters:

configService - the config service object

session - the session for which to compute the result. The snapshot for a session contains only the resources that are ever modified in that session, as opposed to all the resources that are visible in that session.

valueDomain - the value domain. Only snapshot information for resources that are in this value domain will be returned

date - time for which to return the snapshot. A null value indicates the most recent (current) snapshot.

Returns:

Throws:

java.lang.Exception

getDigestSnapshot

public static Snapshot<Digest> getDigestSnapshot(ConfigService configService,
                                                 java.lang.String session,
                                                 RefValueDomain valueDomain)

Returns the current snapshot of Digests for resources

Parameters:

configService - the config service object

session - the session for which to compute the result. The snapshot for a session contains only the resources that are ever modified in that session, as opposed to all the resources that are visible in that session.

valueDomain - the value domain. Only snapshot information for resources that are in this value domain will be returned

Returns:

Throws:

java.lang.Exception

getDigestSnapshot

public static Snapshot<Digest> getDigestSnapshot(ConfigService configService,
                                                 java.lang.String session,
                                                 RefValueDomain valueDomain,
                                                 java.util.Date date)
                                          throws java.lang.Exception

Returns a snapshot of digests for resources that existed with respect to the given time

Parameters:

configService - the config service object

session - the session for which to compute the result. The snapshot for a session contains only the resources that are ever modified in that session, as opposed to all the resources that are visible in that session.

valueDomain - the value domain. Only snapshot information for resources that are in this value domain will be returned

date - time for which to return the snapshot. A null value indicates the most recent (current) snapshot.

Returns:

Throws:

java.lang.Exception

getCanonicalResourceSnapshot

public static Snapshot<CanonicalResource> getCanonicalResourceSnapshot(ConfigService configService,
                                                                       java.lang.String session,
                                                                       RefValueDomain valueDomain,
                                                                       java.util.Date date,
                                                                       boolean getCopy)
                                                                throws java.lang.Exception

Returns a snapshot of canonical data for resources that existed with respect to the given time

Parameters:

configService - the config service object

session - the session for which to compute the result. The snapshot for a session contains only the resources that are ever modified in that session, as opposed to all the resources that are visible in that session.

valueDomain - the value domain. Only snapshot information for resources that are in this value domain will be returned

date - time for which to return the snapshot. A null value indicates the most recent (current) snapshot.

Returns:

Throws:

java.lang.Exception

getPortableResourceSnapshot

public static Snapshot<PortableResource> getPortableResourceSnapshot(ConfigService configService,
                                                                     java.lang.String session,
                                                                     RefValueDomain valueDomain,
                                                                     java.util.Date date,
                                                                     PBE_EncryptionService es)
                                                              throws java.lang.Exception

Returns a snapshot of portable data for resources that existed with respect to the given time

Parameters:

configService - the config service object

session - the session for which to compute the result. The snapshot for a session contains only the resources that are ever modified in that session, as opposed to all the resources that are visible in that session.

valueDomain - the value domain. Only snapshot information for resources that are in this value domain will be returned

date - time for which to return the snapshot. A null value indicates the most recent (current) snapshot.

Returns:

Throws:

java.lang.Exception

getExecRecord

protected ExecRecord getExecRecord(java.lang.String id)
                            throws java.lang.Exception

Throws:

java.lang.Exception

getUndoRecord

protected UndoRecord getUndoRecord(java.lang.String id)
                            throws java.lang.Exception

Throws:

java.lang.Exception