2.2.1.10 CRestriction

The CRestriction structure contains a restriction node in a query command tree.

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0	1	2	3	4	5	6	7	8	9	3 0	1
_ulType
Weight
Restriction (variable)
...

_ulType (4 bytes): A 32-bit unsigned integer indicating the restriction type used for the command tree node. The type determines what is found in the Restriction field of the structure as described in the following table. MUST be set to one of the following values.

Value	Meaning
RTNone 0x00000000	The node represents a noise word in a vector query.
RTAnd 0x00000001	The node contains a CNodeRestriction structure on which a logical AND operation is to be performed.
RTOr 0x00000002	The node contains a CNodeRestriction structure on which a logical OR operation is to be performed.
RTNot 0x00000003	The node contains a CRestriction structure on which a NOT operation is to be performed.
RTContent 0x00000004	The node contains a CContentRestriction structure.
RTProperty 0x00000005	The node contains a CPropertyRestriction structure.
RTProximity 0x00000006	The node contains a CNodeRestriction structure with an array of CContentRestriction structures. Any other kind of restriction is undefined. The restriction requires the words or phrases found in the CContentRestriction structures to be within an indexing service  defined range in order to be a match. The indexing service can also compute a rank based on how far apart the words or phrases are.
RTVector 0x00000007	The node contains a CVectorRestriction structure.
RTNatLanguage 0x00000008	The node contains a CNatLanguageRestriction structure.
RTScope 0x00000009	The node contains a CScopeRestriction structure.
RTPhrase  0xFFFFFFFD	The node contains a CNodeRestriction structure on which a phrase match is to be performed.

Weight (4 bytes): A 32-bit unsigned integer representing the weight of the node. Weight indicates the node's importance relative to other nodes in the query command tree. Higher weight values are more important.

Restriction (variable): The restriction type for the command tree node. The syntax MUST be as indicated by the _ulType field.