2.2.6.1.2.5 PropertyRestriction Structure
The PropertyRestriction structure is used to compare the value of a property with a constant.
The PropertyRestriction structure has the following format.
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RestrictionType |
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RelOp |
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PropertyType |
PropertyID |
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Reserved |
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PropValueNum |
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PropValue (variable) |
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RestrictionType (4 bytes): This field specifies the type of restriction and MUST be set to RES_PROPERTY (0x00000004) for the PropertyRestriction structure.
RelOp (4 bytes): This field specifies the relational operator to be used in the comparison. The value MUST be one of the following.
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Relational operator name |
Value |
Meaning |
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RELOP_LT |
0x00000000 |
The condition evaluates to TRUE if the value of the property is less than the constant value. |
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RELOP_LE |
0x00000001 |
The condition evaluates to TRUE if the value of the property is less than or equal to the constant value. |
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RELOP_GT |
0x00000002 |
The condition evaluates to TRUE if the value of the property is greater than the constant value. |
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RELOP_GE |
0x00000003 |
The condition evaluates to TRUE if the value of the property is greater than or equal to the constant value. |
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RELOP_EQ |
0x00000004 |
The condition evaluates to TRUE if the value of the property is equal to the constant value. |
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RELOP_NE |
0x00000005 |
The condition evaluates to TRUE if the value of the property is not equal to the constant value. |
PropertyType (2 bytes): This field specifies the type of the property. Valid types are specified in section 2.2.6.1.3.
PropertyID (2 bytes): This field specifies the property ID of the property.
Reserved (4 bytes): The application can fill this field with any value when writing the stream. The application MUST ignore the value of this field when reading the stream.
PropValueNum (4 bytes): This field MUST be set to 0x00000001.
PropValue (variable): A PropertyValue structure, as specified in section 2.2.6.1.4, that specifies the value to be compared.