Tuplestore

Classes
class	ZTBSpec
	Represents criteria to be matched against tuples. More...
class	ZTS

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Detailed Description

A tuplestore is simply a humungous array of 2^64 tuples. Each entry in the array can be considered as being an ID/tuple pair, where the ID is simply the index into the array, and thus each entry's ID is unique within the tuplestore.

A tuplestore is fixed in size and always fully populated so that every entry has a tuple. When first created it contains 2^64 empty tuples, which is why you don't need 2^64 * x bytes of storage to create a tuplestore -- it's a sparse array in which empty tuples needn't be physically stored.

In addition a tuplestore allocates IDs, on demand it will return IDs that have never been allocated before and never will again. This lets us add new data to a tuplestore without overwriting IDs that have already been used.

The class ZTS defines an API for reading and writing entries in a tuplestore. Generally though you'll use a Tuplebase or a Tuplesoup instance, depending on whether you want transactional database-like features, or the more UI-friendly soup access.

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