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com.tangosol.util
Interface SegmentedHashMap.EntryAction

All Known Subinterfaces:

SegmentedHashMap.IterableEntryAction

All Known Implementing Classes:

SegmentedConcurrentMap.LockAction, SegmentedConcurrentMap.RemoveAction, SegmentedConcurrentMap.SizeAction, SegmentedConcurrentMap.UnlockAction, SegmentedHashMap.ContainsValueAction, SegmentedHashMap.EntryActionAdapter, SegmentedHashMap.GetEntryAction, SegmentedHashMap.InsertAction, SegmentedHashMap.RemoveAction

Enclosing class:

SegmentedHashMap

protected static interface SegmentedHashMap.EntryAction

An EntryAction encapsulates a logical action to be executed in the context of a key (that may or may not exist in the map). If an Entry exists in the map for the key, invokeFound is called; otherwise invokeNotFound is called. <p/> EntryAction instances are state-aware and are invoked with an opaque context object supplied by the action client. The meanings of the supplied context and return-values are polymorphic in EntryAction type. Depending on the EntryAction type, it may or may not be invoked while holding the segment lock for the key. <p/> An EntryAction should not acquire additional segment-locks.

Method Summary

java.lang.Object	invokeFound(java.lang.Object oKey, java.lang.Object oContext, SegmentedHashMap.Entry[] aeBucket, int nBucket, SegmentedHashMap.Entry entryPrev, SegmentedHashMap.Entry entryCur) Invoke some action, holding the segment lock, when a matching Entry is found.
java.lang.Object	invokeNotFound(java.lang.Object oKey, java.lang.Object oContext, SegmentedHashMap.Entry[] aeBucket, int nBucket) Invoke some action, holding the segment lock, when no matching Entry is found.

Method Detail

invokeFound

java.lang.Object invokeFound(java.lang.Object oKey,
                             java.lang.Object oContext,
                             SegmentedHashMap.Entry[] aeBucket,
                             int nBucket,
                             SegmentedHashMap.Entry entryPrev,
                             SegmentedHashMap.Entry entryCur)

Invoke some action, holding the segment lock, when a matching Entry is found.

Parameters:

oKey - the key to which the action is applied

oContext - opaque context specific to the action

aeBucket - the bucket array

nBucket - the index into the bucket array

entryPrev - the Entry object immediately preceding the Entry that was found, or null

entryCur - the Entry object that was found

Returns:

an opaque result value

invokeNotFound

java.lang.Object invokeNotFound(java.lang.Object oKey,
                                java.lang.Object oContext,
                                SegmentedHashMap.Entry[] aeBucket,
                                int nBucket)

Invoke some action, holding the segment lock, when no matching Entry is found.

Parameters:

oKey - the key to which the action is applied

oContext - opaque context specific to the action

aeBucket - the bucket array

nBucket - the index into the bucket array

Returns:

an opaque result value

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