The ContentFilterstructure specified in 7.4defines a collection of elements that makes up filter criteria and contains different types of FilterOperands. The FilterOperand parameter is an extensible parameter. This parameter is defined in Table 126. The ExtensibleParametertype is defined in 7.12.
Table 126– FilterOperand parameter TypeIds
|
Symbolic Id |
Description |
|
Element |
Specifies an index into the array of elements. This type is used to build a logic tree of sub-elements by linking the operand of one element to a sub-element. |
|
Literal |
Specifies a literal value. |
|
Attribute |
Specifies any Attributeof an Object orVariable Nodeusing a Nodein the type system and relative path constructed from ReferenceTypesand BrowseNames. |
|
SimpleAttribute |
Specifies any Attributeof an Object orVariable Nodeusing a TypeDefinitionand a relative path constructed from BrowseNames. |