2.2.1.3 CContentRestriction
The CContentRestriction structure contains a word or phrase to match in the inverted index for a specific property.
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_Property (variable) |
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Padding1 (variable) |
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Cc |
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_pwcsPhrase (variable) |
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Padding2 (variable) |
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Lcid |
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_ulGenerateMethod |
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_Property (variable): A CFullPropSpec structure. This field indicates the property on which to perform a match operation.
Padding1 (variable): This field MUST be 0 to 3 bytes in length. The length of this field MUST be such that the following field begins at an offset that is a multiple of 4 bytes from the beginning of the message that contains this structure. If this field is present (that is, length nonzero), the value it contains is arbitrary. The content of this field MUST be ignored by the receiver.
Cc (4 bytes): A 32-bit unsigned integer, specifying the number of characters in the _pwcsPhrase field.
_pwcsPhrase (variable): A non-null-terminated Unicode string representing the word or phrase to match for the property. This field MUST NOT be empty. The Cc field contains the length of the string.
Padding2 (variable): This field MUST be 0 to 3 bytes in length. The length of this field MUST be such that the following field begins at an offset that is a multiple of 4 bytes from the beginning of the message that contains this structure. If this field is present (that is, length nonzero), the value it contains is arbitrary. The content of this field MUST be ignored by the receiver.
Lcid (4 bytes): A 32-bit unsigned integer, indicating the locale of _pwcsPhrase, as specified in [MS-LCID].
_ulGenerateMethod (4 bytes): A 32-bit unsigned integer, specifying the method to use when generating alternate word forms.
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Value
Meaning
GENERATE_METHOD_EXACT
0x00000000
Exact match. Each word in the phrase matches exactly in the inverted index.
GENERATE_METHOD_PREFIX
0x00000001
Prefix match. Each word in the phrase is considered a match if the word is a prefix of an indexed string. For example, if the word "barking" is indexed, then "bar" would match when performing a prefix match.
GENERATE_METHOD_INFLECT
0x00000002
Matches inflections of a word. An inflection of a word is a variant of the root word in the same part of speech that has been modified, according to linguistic rules of a given language. For example, inflections of the verb swim in English include swim, swims, swimming, and swam. The inflection forms of a word can be determined by calling the Inflect abstract interface (section 3.1.7) to the GSS (Generic Search Service) with "pwcsPhrase" as an argument.