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.

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:

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"
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