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public interface ExtendedCacheLoader
Extends the CacheLoader
interface by adding methods to support
serialized transfer of a portion of a cache tree.
NOTE: The methods in this interface will be merged into
CacheLoader
in JBossCache 1.3.
Method Summary | |
---|---|
byte[] |
loadState(Fqn subtree)
Fetch a portion of the state for this cache from secondary storage (disk, DB) and return it as a byte buffer. |
void |
setRegionManager(RegionManager manager)
Sets the RegionManager this object should use to manage
marshalling/unmarshalling of different regions using different
classloaders. |
void |
storeState(byte[] state,
Fqn subtree)
Store the given portion of the cache tree's state in secondary storage. |
Methods inherited from interface org.jboss.cache.loader.CacheLoader |
---|
commit, exists, get, getChildrenNames, loadEntireState, prepare, put, put, put, remove, remove, removeData, rollback, setCache, setConfig, storeEntireState |
Methods inherited from interface org.jboss.system.Service |
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create, destroy, start, stop |
Method Detail |
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byte[] loadState(Fqn subtree) throws java.lang.Exception
storeState(byte[], Fqn)
.
subtree
- Fqn naming the root (i.e. highest level parent) node of
the subtree for which state is requested.
java.lang.Exception
TreeCache.activateRegion(String)
void storeState(byte[] state, Fqn subtree) throws java.lang.Exception
subtree
,
then no special behavior is required. Otherwise, ensure that
the state is integrated under the given subtree
. Typically
in the latter case subtree
would be the Fqn of the buddy
backup region for
a buddy group; e.g.
If the the transferred state had Fqns starting with "/a" and
subtree
was "/_BUDDY_BACKUP_/192.168.1.2:5555" then the
state should be stored in the local persistent store under
"/_BUDDY_BACKUP_/192.168.1.2:5555/a"
state
- the state to storesubtree
- Fqn naming the root (i.e. highest level parent) node of
the subtree included in state
. If the Fqns
of the data included in state
are not
already children of subtree
, then their
Fqns should be altered to make them children of
subtree
before they are persisted.
java.lang.Exception
void setRegionManager(RegionManager manager)
RegionManager
this object should use to manage
marshalling/unmarshalling of different regions using different
classloaders.
NOTE: This method is only intended to be used
by the TreeCache
instance this cache loader is
associated with.
manager
- the region manager to use, or null
.
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