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IBM WebSphere eXtreme Scale 6 by Anthony Chaves

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Unsupported methods

You may have noticed that we are using the awkward convention of keeping track of the keys we use for payments in a BackingMap and using sequential integers as keys. We've use this convention up to now because the ObjectMap API does not include several methods implemented on java.util.Map. We can obtain a java.util.Map representation of an ObjectMap by calling the getJavaMap() method on an ObjectMap:

Map map = paymentsMap.getJavaMap();

This java.util.Map does not implement all of the methods specified by the java.util.Map interface. Most notably, this map does not have an implementation of the keySet(), entrySet(), or values() methods. In a typical Java application, a developer might get an entry set for a map and iterate over ...

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