protected static class SegmentedConcurrentMap.SizeAction extends SegmentedHashMap.EntryActionAdapter
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.
Modifier | Constructor and Description |
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protected |
SizeAction() |
Modifier and Type | Method and Description |
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Object |
instantiateContext(boolean fEmptyCheck)
Instantiate a context appropriate for applying SizeAction to count the number of entries in the map.
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Object |
invokeFound(Object oKey, 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(Object oContext)
Return true iff further key evaluations for the given context are known to be unnecessary.
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int |
size(Object oContext)
Return the number of Entry objects found while applying this action.
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invokeNotFound
public Object invokeFound(Object oKey, 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(Object oContext)
isComplete
in interface SegmentedHashMap.IterableEntryAction
isComplete
in class SegmentedHashMap.EntryActionAdapter
oContext
- the action contextpublic int size(Object oContext)
oContext
- the action contextpublic Object instantiateContext(boolean fEmptyCheck)
fEmptyCheck
- if true, only test for emptiness