Criteria for +retrieving landmark information

The criteria object specifies what landmark +information is returned and how the returned information is sorted.

Each GetList call +targets one type of landmark information:

Landmark
Landmark category
Landmark database

For more information about the types, see the Landmarks +Service overview page.

The criteria object has three main properties: Type, Filter, +and Sort. These are described in the following table. +Properties enclosed in brackets are optional.

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**Table:** Criteria object properties
+ Property +	+ Description +	+ Type +	+ Value +
+ `criteria.Type` +	+ Specifies the type of landmark information to retrieve. + Note: The available `Filter` properties depend on the selected +type. + +	+ string +	+ Possible values: + + `"Landmark"` + `"Category"` + `"Database"` + +
+ `[criteria.Filter]` +	+ Specifies how the information to be retrieved is filtered. + The properties of this object depend on the specified `Type`: + + Landmark +properties + Landmark +category properties + Landmark +database properties + + If the `Filter` property is not specified, `GetList` returns +a list of all the available landmarks, landmark categories, or landmark databases, +depending on the specified `Type`. +	+ object +	+ For example: + `criteria.Filter.LandmarkName` +
+ `[criteria.Sort]` +	+ Specifies how the returned list of information is sorted. +	+ object +	+ Object with the properties specified below +
+ `[criteria.Sort.Key]` +	+ Specifies the information field (object property) to sort by. +	+ string +	+ Possible values: + + If `Type` is `"Landmark"`: `"LandmarkName"` + + If `Type` is `"Category"`: `"CategoryName"` + + If `Type` is `"Database"`: `"DatabaseURI"` + + +
+ `criteria.Sort.Order` +	+ Specifies the sort order. + The default value for this property depends on `Type`: + + If `Type` is `"Landmark"`: `"Ascending"` + + If `Type` is `"Category"`: +No default value + If `Type` is `"Database"`: `"Ascending"` + + +	+ string +	+ Possible values: + + `"Ascending"` + `"Descending"` + +