Oracle® Coherence Java API Reference
v3.5

E14977-01

com.tangosol.util
Class SegmentedConcurrentMap.LockAction

java.lang.Object
  extended by com.tangosol.util.SegmentedConcurrentMap.LockAction
All Implemented Interfaces:
SegmentedHashMap.EntryAction
Enclosing class:
SegmentedConcurrentMap

protected class SegmentedConcurrentMap.LockAction
extends java.lang.Object
implements SegmentedHashMap.EntryAction

Action support for lock(). This action attempts to lock the specified key in this map, and is expected to run while holding the segment-lock for the specified key.

The context object for a LockAction is the prospective lock-holder.

The result of invoking a LockAction is NO_VALUE if the key is successfully locked, or the Entry object corresponding to the specified key if the key could not be successfully locked.


Constructor Summary
protected SegmentedConcurrentMap.LockAction()
           
 
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.
 

Constructor Detail

SegmentedConcurrentMap.LockAction

protected SegmentedConcurrentMap.LockAction()
Method Detail

invokeFound

public 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.

Specified by:
invokeFound in interface SegmentedHashMap.EntryAction
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

public 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.

Specified by:
invokeNotFound in interface SegmentedHashMap.EntryAction
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

Oracle® Coherence Java API Reference
v3.5

E14977-01

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