|
Class Summary |
| AccendingSequenceOfLongsReader |
|
| DeletedFilesStatistics |
|
| FileFolder |
Supported API: false
Extendable: false |
| FileSort |
|
| FvFolder |
Use the newFvFolder static factory method(s), not the FvFolder
constructor, to construct instances of this class. |
| FvFolderItemLink |
Use the newFvFolderItemLink static factory method(s), not
the FvFolderItemLink constructor, to construct instances
of this class. |
| FvHelper |
Supported API: false
Extendable: false |
| FvHost |
Use the newFvHost static factory method(s), not the FvHost
constructor, to construct instances of this class. |
| FvItem |
Use the newFvItem static factory method(s), not the FvItem
constructor, to construct instances of this class. |
| FvItem.OverflowListener |
|
| FvItem.StoreStreamListener |
|
| FvLoader |
File Vault object loader. |
| FvLog |
Helper class implements static methods to log messages in Wt.Fv Package. |
| FvMount |
Use the newFvMount static factory method(s), not the FvMount
constructor, to construct instances of this class. |
| FvMountStatus |
Supported API: true
Extendable: false |
| FvPolicyItem |
The FvPolicy references file vault that apply to a specific content
item holder for a specific event in a given state. |
| FvPolicyItemCache |
This class implements cache service to store file vault policy items. |
| FvPolicyRule |
FvPolicyRule objects indicate what file vault is applicable when an event
happens to an object. |
| FvPolicyRuleHelper |
|
| FvProperties |
|
| FvServiceEvent |
Provides a service specific event extended from KeyedEvent emitted when
a folder or a vault overflows. |
| FvServiceFwd |
The FvService service presents an interface accessible also in the client
to the functions provided in the server by the StandardFvService. |
| FvServicePersistentFlags |
Use the newFvServicePersistentFlags static factory method(s),
not the FvServicePersistentFlags constructor, to construct
instances of this class. |
| FvSurrogate |
|
| FvTimer |
|
| FvVault |
Use the newFvVault static factory method(s), not the FvVault
constructor, to construct instances of this class. |
| FvVaultFolderLink |
Use the newFvVaultFolderLink static factory method(s), not
the FvVaultFolderLink constructor, to construct instances
of this class. |
| ReplicatorElemFinder |
|
|* Implements methods that find elements to be replicated based on criterias *|
|* established by the existance of FvPolicyRule objects in the database *|
| |
| RevaultElemFinder |
|
| RevaultElemMover |
|
| RevaultElemReporter |
|
1) The delete unreferenced file action does not log what it is going to do. |
| RevaultingEvent |
Supported API: false
Extendable: false |
| RevaultingSession |
Use the newRevaultingSession static factory method(s), not
the RevaultingSession constructor, to construct instances
of this class. |
| ReVaultSessionId |
Use the newReVaultSessionId static factory method(s), not
the ReVaultSessionId constructor, to construct instances
of this class. |
| RevaultURLContentHandler |
|
| RevaultUrlSession |
Use the newRevaultUrlSession static factory method(s), not
the RevaultUrlSession constructor, to construct instances
of this class. |
| RvStreamIdCounter |
Use the newRvStreamIdCounter static factory method(s), not
the RvStreamIdCounter constructor, to construct instances
of this class. |
| SiteHostLink |
Use the newSiteHostLink static factory method(s), not the
SiteHostLink constructor, to construct instances of this
class. |
| SiteVaultLink |
Use the newSiteVaultLink static factory method(s), not the
SiteVaultLink constructor, to construct instances of this
class. |
| StandardFvService |
Standard implementation of the file vault service. |
| StandardFvService.ActiveFolderCache |
ActiveFolderCache maintains two mappings, vault-to-folder and folder-to-vault
(we could have maintain only one mapping but CacheManager doesn't provide API
to get a list of values without giving a key, so if we have only the vault-to-folder
mapping, then given a folder, we have no way to find the corresponding vault, hence
the extra mapping). |
| StandardFvService.FvFolderCache |
|
| StandardFvService.FvMountCache |
|
| StandardFvService.HostCache |
|
| StandardFvService.UnreferencedFvItemsPurging |
Class for thread spawning of ScheduleUnreferencedFvItemsPurging.
|
| StoredItem |
Supported API: false
Extendable: false |
| StreamIdentity |
Use the newStreamIdentity static factory method(s), not
the StreamIdentity constructor, to construct instances of
this class. |
| StreamIdPool |
|
| StreamIDSeq |
Supported API: false
Extendable: false |
| URLRevaultingEvent |
Supported API: false
Extendable: false |
| Vault |
Supported API: false
Extendable: false |
| VaultPolicyItemLink |
Use the newVaultPolicyItemLink static factory method(s),
not the VaultPolicyItemLink constructor, to construct instances
of this class. |
| VaultPolicyRuleLink |
Use the newVaultPolicyRuleLink static factory method(s),
not the VaultPolicyRuleLink constructor, to construct instances
of this class. |
fv package — File Vault Service
The file vault service (wt.fv package) is responsible
for the definition and execution of rules that define the vaulting algorithm
for content items. This allows the content service to store content items
locally in external files instead of ORACLE BLOBs in a centralized Oracle
database resulting in speed up of upload and download process.
Design Overview
File Vault Model
File folder is an equivalent of a directory on the
disk drive. Folders are logically grouped to form vaults. Each folder has a
sequence number that defines the order in which the folders within the vault
will be used for storing content items. When a folder overflows, the vault
manager makes it read-only and begins using the next available folder in the
sequence. All the folders must be mounted to all the method server hosts in
order to provide access to content items stored in them. Mappings between
Folders and Vaults are maintained both ways so that given a vault, the
contained folder can be fetched. Similarly, given a folder, the containing
vault can be fetched. Depending on the domain a content holder belongs to, a
class and life cycle state content item is stored in one of the vaults or in
the ORACLE BLOB.
Following is the class diagram for vaulting rules:
External Interface
There is no external API for customer use.
Event Processing
The service emits OVERFLOW events with the FvFolder
object as a target on folder overflow and the FvVault object as a target on
vault overflow. An event is emitted from within a transaction. Vetoing an event
or throwing an exception has no effect on the operation that caused the event
to be emitted.