wfs:GetFeatureType
A GetFeature element contains one or more Query elements
that describe a query operation on one feature type. In
response to a GetFeature request, a Web Feature Service
must be able to generate a GML3 response that validates
using a schema generated by the DescribeFeatureType request.
A Web Feature Service may support other possibly non-XML
(and even binary) output formats as long as those formats
are advertised in the capabilities document.
Complex type information
Namespace: http://niem.gov/niem/external/ogc-wfs/1.1.0/dhs-gmo/1.0.0
Schema document: external/ogc-wfs/1.1.0/dhs-gmo/1.0.0/wfs.xsd
Content
- wfs:Query [1..*] The Query element is used to describe a single query. One or more Query elements can be specified inside a GetFeature element so that multiple queries can be executed in one request. The output from the various queries are combined in a wfs:FeatureCollection element to form the response document.
Attributes
| Name | Occ | Type | Description | Notes |
|---|---|---|---|---|
| service | [0..1] | ows:ServiceType | The service attribute is included to support service endpoints that implement more than one OGC service. For example, a single CGI that implements WMS, WFS and WCS services. The endpoint can inspect the value of this attribute to figure out which service should process the request. The value WFS indicates that a web feature service should process the request. This parameter is somewhat redundant in the XML encoding since the request namespace can be used to determine which service should process any give request. For example, wfs:GetCapabilities and easily be distinguished from wcs:GetCapabilities using the namespaces. | Default value is "WFS". from type wfs:BaseRequestType |
| version | [0..1] | xsd:string | The version attribute is used to indicate the version of the WFS specification that a request conforms to. All requests in this schema conform to V1.1 of the WFS specification. For WFS implementations that support more than one version of a WFS sepcification ... if the version attribute is not specified then the service should assume that the request conforms to greatest available specification version. | Default value is "1.1.0". from type wfs:BaseRequestType |
| handle | [0..1] | xsd:string | The handle attribute allows a client application to assign a client-generated request identifier to a WFS request. The handle is included to facilitate error reporting. A WFS may report the handle in an exception report to identify the offending request or action. If the handle is not present, then the WFS may employ other means to localize the error (e.g. line numbers). | from type wfs:BaseRequestType |
| resultType | [0..1] | wfs:ResultTypeType | The resultType attribute is used to indicate what response a WFS should return to user once a GetFeature request is processed. Possible values are: results - meaning that the full response set (i.e. all the feature instances) should be returned. hits - meaning that an empty response set should be returned (i.e. no feature instances should be returned) but the "numberOfFeatures" attribute should be set to the number of feature instances that would be returned. | Default value is "results". |
| outputFormat | [0..1] | xsd:string | The outputFormat attribute is used to specify the output format that the Web Feature Service should generate in response to a GetFeature or GetFeatureWithLock element. The default value of 'text/xml; subtype=gml/3.1.1' indicates that the output is an XML document that conforms to the Geography Markup Language (GML) Implementation Specification V3.1.1. For the purposes of experimentation, vendor extension, or even extensions that serve a specific community of interest, other acceptable output format values may be used to specify other formats as long as those values are advertised in the capabilities document. For example, the value WKB may be used to indicate that a Well Known Binary format be used to encode the output. | Default value is "text/xml; subtype=gml/3.1.1". |
| maxFeatures | [0..1] | xsd:positiveInteger | The maxFeatures attribute is used to specify the maximum number of features that a GetFeature operation should generate (regardless of the actual number of query hits). | |
| traverseXlinkDepth | [0..1] | xsd:string | This attribute indicates the depth to which nested property XLink linking element locator attribute (href) XLinks are traversed and resolved if possible. A value of "1" indicates that one linking element locator attribute (href) Xlink will be traversed and the referenced element returned if possible, but nested property XLink linking element locator attribute (href) XLinks in the returned element are not traversed. A value of "*" indicates that all nested property XLink linking element locator attribute (href) XLinks will be traversed and the referenced elements returned if possible. The range of valid values for this attribute consists of positive integers plus "*". If this attribute is not specified then no xlinks shall be resolved and the value of traverseXlinkExpiry attribute (if it specified) may be ignored. | |
| traverseXlinkExpiry | [0..1] | xsd:positiveInteger | The traverseXlinkExpiry attribute value is specified in minutes. It indicates how long a Web Feature Service should wait to receive a response to a nested GetGmlObject request. This attribute is only relevant if a value is specified for the traverseXlinkDepth attribute. |
Used by
- Element wfs:GetFeature
Type inheritance chain
- wfs:BaseRequestType
- wfs:GetFeatureType