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com.tangosol.util
Interface InvocableMap.EntryProcessor

All Superinterfaces:

java.io.Serializable

All Known Implementing Classes:

AbstractProcessor, AsynchronousProcessor, CompositeProcessor, ConditionalProcessor, ConditionalPut, ConditionalPutAll, ConditionalRemove, ExtractorProcessor, NullImplementation.NullEntryProcessor, NumberIncrementor, NumberMultiplier, PreloadRequest, PriorityProcessor, PropertyProcessor, UpdaterProcessor, VersionedPut, VersionedPutAll

Enclosing interface:

InvocableMap

public static interface InvocableMap.EntryProcessor

extends java.io.Serializable

An invocable agent that operates against the Entry objects within a Map.

Method Summary

java.lang.Object	process(InvocableMap.Entry entry) Process a Map.Entry object.
java.util.Map	processAll(java.util.Set setEntries) Process a Set of InvocableMap.Entry objects.

Method Detail

process

java.lang.Object process(InvocableMap.Entry entry)

Process a Map.Entry object.

Parameters:

entry - the Entry to process Note: if this method throws an exception, all modifications to the supplied entry or any other entries retrieved via the BackingMapContext.getBackingMapEntry(java.lang.Object) API will be rolled back leaving all underlying values unchanged.

Returns:

the result of the processing, if any

processAll

java.util.Map processAll(java.util.Set setEntries)

Process a Set of InvocableMap.Entry objects. This method is semantically equivalent to:

   Map mapResults = new ListMap();
   for (Iterator iter = setEntries.iterator(); iter.hasNext(); )
       {
       Entry entry = (Entry) iter.next();
       mapResults.put(entry.getKey(), process(entry));
       }
   return mapResults;
 

Note: if processAll() call throws an exception, only the entries that were removed from the setEntries would be considered successfully processed and the corresponding changes made to the underlying Map; changes made to the remaining entries or any other entries obtained from BackingMapContext.getBackingMapEntry(java.lang.Object) will not be processed.

Parameters:

setEntries - a Set of InvocableMap.Entry objects to process

Returns:

a Map containing the results of the processing, up to one entry for each InvocableMap.Entry that was processed, keyed by the keys of the Map that were processed, with a corresponding value being the result of the processing for each key

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