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Describes the key used to store a entry in the inverted index.
Each field in the key has a bit in the
set
member that says if it is set or not. This bit allows to
say that a particular field is
undefined
regardless of
the actual value stored. The methods
IsDefined, SetDefined
and
Undefined
are used to manipulate
the
defined
status of a field. The
Pack
and
Unpack
methods are used to convert to and from the disk storage representation
of the key.
Although constructors may be used, the prefered way to create a WordKey object is by using the WordContext::Key method.
The following constants are defined: