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com.tangosol.util
Class SegmentedHashMap.GetEntryAction

java.lang.Object
com.tangosol.util.SegmentedHashMap.GetEntryAction

All Implemented Interfaces:

SegmentedHashMap.EntryAction

Enclosing class:

SegmentedHashMap

protected class SegmentedHashMap.GetEntryAction

extends java.lang.Object

implements SegmentedHashMap.EntryAction

Action support for getEntryInternal. The action performs an Entry lookup by key and is not required to run while holding segment locks.

The context object for a GetEntryAction is either Boolean.TRUE or Boolean.FALSE indicating whether or not to return synthetic entries.

The result of invoking a GetEntryAction is the (possibly synthetic) Entry corresponding to a given key, null if no matching Entry is found, or NO_VALUE indicating that a concurrent resize occurred, and the operation must be repeated.

Constructor Summary

protected

SegmentedHashMap.GetEntryAction()

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

SegmentedHashMap.GetEntryAction

protected SegmentedHashMap.GetEntryAction()

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

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