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Oracle® Coherence Java API Reference Release 3.7.1.0 E22843-01 |
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java.lang.Object
com.tangosol.util.SegmentedHashMap.EntryActionAdapter
com.tangosol.util.SegmentedConcurrentMap.SizeAction
protected static class SegmentedConcurrentMap.SizeAction
Action support for size(). The action is invoked on each Entry in the map to determine the number of key-value mappings contained in the map. SizeAction is not required to run while holding any segment-locks.
The context object for a SizeAction is an opaque context created by instantiateContext.
The result of invoking a SizeAction is the number of key-value mappings found in the map.
Constructor Summary | |
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protected |
SegmentedConcurrentMap.SizeAction() |
Method Summary | |
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java.lang.Object |
instantiateContext(boolean fEmptyCheck) Instantiate a context appropriate for applying SizeAction to count the number of entries in the map. |
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. |
boolean |
isComplete(java.lang.Object oContext) Return true iff further key evaluations for the given context are known to be unnecessary. |
int |
size(java.lang.Object oContext) Return the number of Entry objects found while applying this action. |
Methods inherited from class com.tangosol.util.SegmentedHashMap.EntryActionAdapter |
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invokeNotFound |
Constructor Detail |
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protected SegmentedConcurrentMap.SizeAction()
Method Detail |
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public java.lang.Object invokeFound(java.lang.Object oKey, java.lang.Object oContext, SegmentedHashMap.Entry[] aeBucket, int nBucket, SegmentedHashMap.Entry entryPrev, SegmentedHashMap.Entry entryCur)
invokeFound
in interface SegmentedHashMap.EntryAction
invokeFound
in class SegmentedHashMap.EntryActionAdapter
oKey
- the key to which the action is appliedoContext
- opaque context specific to the actionaeBucket
- the bucket arraynBucket
- the index into the bucket arrayentryPrev
- the Entry object immediately preceding the Entry that was found, or nullentryCur
- the Entry object that was foundpublic boolean isComplete(java.lang.Object oContext)
isComplete
in interface SegmentedHashMap.IterableEntryAction
isComplete
in class SegmentedHashMap.EntryActionAdapter
oContext
- the action contextpublic int size(java.lang.Object oContext)
oContext
- the action contextpublic java.lang.Object instantiateContext(boolean fEmptyCheck)
fEmptyCheck
- if true, only test for emptiness
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Oracle® Coherence Java API Reference Release 3.7.1.0 E22843-01 |
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