14 OpenLS Support

This chapter describes the Oracle Spatial support for Web services based on the Open Location Services Initiative (OpenLS) of the Open GeoSpatial Consortium (OGC), versions 1.0 and 1.1. For a description of OpenLS, see http://www.opengeospatial.org/functional/?page=ols, which includes a link to the detailed specification.

This chapter includes the following major sections:

Section 14.1, "Supported OpenLS Services"
Section 14.2, "OpenLS Application Programming Interfaces"
Section 14.3, "OpenLS Service Support and Examples"

Note:

Before you use OpenLS, be sure that you understand the concepts described in Chapter 10, "Introduction to Spatial Web Services", and that you have performed any necessary configuration work as described in that chapter.

14.1 Supported OpenLS Services

Spatial supports the following OGC OpenLS services:

Location Utility Service (geocoding)
Presentation Service (mapping)
Route Service (driving directions)
Directory Service (YP, or "Yellow Pages")

Spatial does not currently support the OGC OpenLS Gateway Service (mobile positioning).

For all supported services except Directory Service (YP, or Yellow Pages), you must first perform certain operations, which might included acquiring and loading third-party data, as well as configuring and deploying underlying technology on which the Spatial OpenLS service is based. Table 14-1 lists the Spatial OpenLS services, and the chapter or manual that documents the requirements and underlying technologies.

Table 14-1 Spatial OpenLS Services Dependencies

Spatial OpenLS Service	Depends On	Documented In
Geocoding	Geocoding metadata and data	Chapter 11, "Geocoding Address Data"
Mapping	OracleAS MapViewer	Oracle Application Server MapViewer User's Guide
Driving directions	Routing engine	Chapter 13, "Routing Engine"
Business directory (YP, or Yellow Pages)	Data from an external provider	Chapter 12, "Business Directory (Yellow Pages) Support"

14.2 OpenLS Application Programming Interfaces

Two application programming interfaces (APIs) are provided using Spatial OpenLS services: a Web services API and a PL/SQL API.

The Web services API uses the same SOAP envelope as Web feature services (described in Chapter 15). You enable authentication and authorization using WSS and proxy authentication and user management.

The PL/SQL API is a convenient alternative to Web services. Authentication and authorization are enabled through the database connection that you use to call a PL/SQL subprogram to submit an OpenLS request and return the result. The PL/SQL API is implemented in the SDO_OLS package, which is documented in Chapter 27.

14.3 OpenLS Service Support and Examples

This section describes the support provided for geocoding, mapping, routing, and directory service (YP). It also contains examples of OpenLS Web services API requests and responses.

14.3.1 OpenLS Geocoding

An OpenLS geocoding <Request> element includes the methodName attribute with a value of either GeocodeRequest or ReverseGeocodeRequest, and corresponding a top-level element named <GeocodeRequest> or <ReverseGeocodeRequest>.

If the methodName attribute value is GeocodeRequest, the <GeocodeRequest> element contains an <Address> element that can specify a free-form address, a street address, or an intersection address, with zero or more <Place> elements and an optional <PostalCode> element. The <Address> element has the required attribute countryCode, and several optional attributes.

If the methodName attribute value is GeocodeRequest, the <ReverseGeocodeRequest> element contains a <Position> element for identifying the location to be reverse geocoded, and an optional <ReverseGeocodePreference> element for specifying the information to be returned (default = a street address).

Example 14-1 is a request to geocode two addresses in San Francisco, California.

Example 14-1 OpenLS Geocoding Request

<XLS
  xmlns=http://www.opengis.net/xls
  xmlns:gml=http://www.opengis.net/gml
  xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance
  xsi:schemaLocation="http://www.opengis.net/xls …"
  version="1.0">
  <RequestHeader clientName="someName" clientPassword="somePwd"/>
  <Request
    maximumResponses="10"
    methodName="GeocodeRequest"
    requestID="123"
    version="1.0">
    <GeocodeRequest>
      <Address countryCode="US">
        <StreetAddress>
          <Building number="400"/>
          <Street>Post Street</Street>
        </StreetAddress>
        <Place type="CountrySubdivision">CA</Place>
        <Place type="Municipality">San Francisco</Place>
        <PostalCode>94102</PostalCode>
      </Address>
      <Address countryCode="US">
        <StreetAddress>
          <Building number="233"/>
          <Street>Winston Drive</Street>
        </StreetAddress>
        <Place type="CountrySubdivision">CA</Place>
        <Place type="Municipality">San Francisco</Place>
        <PostalCode>94132</PostalCode>
      </Address>
    </GeocodeRequest>
  </Request>
</XLS>

Example 14-2 is the response to the request in Example 14-1. The longitude and latitude coordinates are returned for the two addresses (-122.4083257 37.788208 for the first, -122.4753965 37.7269066 for the second).

Example 14-2 OpenLS Geocoding Response

<xls:XLS
  xmlns:xls=http://www.opengis.net/xls
  xmlns:gml=http://www.opengis.net/gml
  xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance
  version="1.0">
  <xls:ResponseHeader/>
  <xls:Response requestID="123" version="1.0">
    <xls:GeocodeResponse xmlns:xls="http://www.opengis.net/xls">
      <xls:GeocodeResponseList
        xmlns:xls=http://www.opengis.net/xls
        numberOfGeocodedAddresses="1">
        <xls:GeocodedAddress>
          <gml:Point xmlns:gml="http://www.opengis.net/gml">
            <gml:pos dimension="2" srsName="4326">-122.4083257 37.788208</gml:pos>
          </gml:Point>
          <xls:Address countryCode="US">
            <xls:StreetAddress>
              <xls:Building number="400"/>
              <xls:Street>POST ST</xls:Street>
            </xls:StreetAddress>
            <xls:Place type="CountrySubdivision">CA</xls:Place>
            <xls:Place type="Municipality">SAN FRANCISCO</xls:Place>
            <xls:PostalCode>94102</xls:PostalCode>
          </xls:Address>
        </xls:GeocodedAddress>
      </xls:GeocodeResponseList>
      <xls:GeocodeResponseList
        xmlns:xls=http://www.opengis.net/xls
        numberOfGeocodedAddresses="1">
        <xls:GeocodedAddress>
          <gml:Point xmlns:gml="http://www.opengis.net/gml">
            <gml:pos dimension="2" srsName="4326">-122.4753965 37.7269066</gml:pos>
          </gml:Point>
          <xls:Address countryCode="US">
            <xls:StreetAddress>
              <xls:Building number="233"/>
              <xls:Street>WINSTON DR</xls:Street>
            </xls:StreetAddress>
            <xls:Place type="CountrySubdivision">CA</xls:Place>
            <xls:Place type="Municipality">SAN FRANCISCO</xls:Place>
            <xls:PostalCode>94132</xls:PostalCode>
          </xls:Address>
        </xls:GeocodedAddress>
      </xls:GeocodeResponseList>
    </xls:GeocodeResponse>
  </xls:Response>
</xls:XLS>

14.3.2 OpenLS Mapping

An OpenLS mapping <Request> element includes the methodName attribute with a value of PortrayMapRequest, and a top-level element named <PortrayMapRequest>.

The <PortrayMapRequest> element contains an <Output> element that specifies the output of the map to be generated, including the center point of the map.

The <PortrayMapRequest> element can contain a <Basemap> element specifying a MapViewer base map and one or more themes, and zero or more <Overlay> elements, each specifying information to be overlaid on the base map.

Example 14-3 is a request to portray a map image. The image is to be centered at a specified longitude/latitude point, to use a base map and two MapViewer themes, and identify three points on the map.

Example 14-3 OpenLS Mapping Request

<XLS
  xmlns=http://www.opengis.net/xls
  xmlns:gml=http://www.opengis.net/gml
  xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance
  xsi:schemaLocation="http://www.opengis.net/xls …"
  version="1.1">
  <RequestHeader clientName="someName" clientPassword="somePwd"/>
  <Request
    maximumResponses="1"
    methodName="PortrayMapRequest"
    requestID="456"
    version="1.1">
    <PortrayMapRequest>
      <Output
        BGcolor="#a6cae0"
        content="URL"
        format="GIF_URL"
        height="600"
        transparent="false"
        width="800">
        <CenterContext SRS="8307">
          <CenterPoint srsName="8307">
            <gml:pos>-122.2615 37.5266</gml:pos>
          </CenterPoint>
          <Radius unit="M">50000</Radius>
        </CenterContext>
      </Output>
      <Basemap filter="Include">
        <Layer name="mvdemo.demo_map.THEME_DEMO_COUNTIES"/>
        <Layer name="mvdemo.demo_map.THEME_DEMO_HIGHWAYS"/>
      </Basemap>
      <Overlay zorder="1">
        <POI
          ID="123"
          description="description"
          phoneNumber="1234"
          POIName="Books at Post Str (point)">
          <gml:Point srsName="4326">
            <gml:pos>-122.4083257 37.788208</gml:pos>
          </gml:Point>
        </POI>
      </Overlay>
      <Overlay zorder="2">
        <POI
          ID="456"
          description="description"
          phoneNumber="1234"
          POIName="Books at Winston Dr (address)">
          <Address countryCode="US">
            <StreetAddress>
              <Building number="233"/>
              <Street>Winston Drive</Street>
            </StreetAddress>
            <Place type="CountrySubdivision">CA</Place>
            <Place type="CountrySecondarySubdivision"/>
            <Place type="Municipality">San Francisco</Place>
            <Place type="MunicipalitySubdivision"/>
            <PostalCode>94132</PostalCode>
          </Address>
        </POI>
      </Overlay>
      <Overlay zorder="3">
        <Position levelOfConf="1">
          <gml:Point gid="a boat (point)" srsName="4326">
            <gml:pos>-122.8053965 37.388208</gml:pos>
          </gml:Point>
        </Position>
      </Overlay>
    </PortrayMapRequest>
  </Request>
</XLS>

Example 14-4 is the response to the request in Example 14-3.; however, in an actual response, the line <xls:URL>Actual URL replaced with constant string for test</xls:URL> would contain the actual URL of the map image.

Example 14-4 OpenLS Mapping Response

<xls:XLS
  xmlns:xls=http://www.opengis.net/xls
  xmlns:gml=http://www.opengis.net/gml
  xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance
  xsi:schemaLocation="http://www.opengis.net/xls …"
  version="1.1">
  <xls:ResponseHeader/>
  <xls:Response numberOfResponses="1" requestID="456" version="1.1">
    <xls:PortrayMapResponse>
      <xls:Map>
        <xls:Content format="GIF_URL" height="600" width="800">
          <xls:URL>Actual URL replaced with constant string for test</xls:URL>
        </xls:Content>
        <xls:BBoxContext srsName="4326">
          <gml:pos>-122.86037685607968 37.07744235794024</gml:pos>
          <gml:pos>-121.66262314392031 37.97575764205976</gml:pos>
        </xls:BBoxContext>
      </xls:Map>
    </xls:PortrayMapResponse>
  </xls:Response>
</xls:XLS>

14.3.3 OpenLS Routing

An OpenLS routing <Request> element includes the methodName attribute with a value of DetermineRouteRequest, and a top-level element named <DetermineRouteRequest>.

The <DetermineRouteRequest> element contains a <RoutePlan> element that specifies the route preference and points to be included (and optionally avoided) in the route, with at least the start and end points.

The <DetermineRouteRequest> element can also contain zero or more of the following elements: <RouteGeometryRequest> to return the line string geometry representing the route, <RouteMapRequest> to request a map image of the route, and <RouteInstructionsRequest> to request driving directions for the route.

Example 14-5 is a request for the route geometry and map image for the fastest route between an address in Cambridge, Massachusetts and an address in Nashua, New Hampshire.

Example 14-5 OpenLS Routing Request

<XLS
  xmlns=http://www.opengis.net/xls
  xmlns:gml=http://www.opengis.net/gml
  xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance
  xsi:schemaLocation="http://www.opengis.net/xls …"
  version="1.1">
  <RequestHeader clientName="someName" clientPassword="somePwd"/>
    <Request
      maximumResponses="10"
      methodName="DetermineRouteRequest"
      requestID="12345"
      version="1.0">
      <DetermineRouteRequest>
        <RoutePlan>
          <RoutePreference>Fastest</RoutePreference>
          <WayPointList>
            <StartPoint>
              <POI description="Borders" ID="1" phoneNumber="12345" POIName="Borders">
                <Address countryCode="US">
                  <StreetAddress>
                    <Building number="100"/>
                    <Street>Cambridgeside Pl</Street>
                  </StreetAddress>
                  <Place type="CountrySubdivision">MA</Place>
                  <Place type="Municipality">Cambridge</Place>
                  <PostalCode>02141</PostalCode>
                </Address>
              </POI>
            </StartPoint>
            <EndPoint>
              <Address countryCode="US">
                <StreetAddress>
                  <Building number="1"/>
                  <Street>Oracle Dr</Street>
                </StreetAddress>
                <Place type="CountrySubdivision">New Hampshire</Place>
                <Place type="Municipality">Nashua</Place>
                <PostalCode>03062</PostalCode>
              </Address>
            </EndPoint>
          </WayPointList>
          <AvoidList/>
        </RoutePlan>
      <RouteGeometryRequest maxPoints="100" provideStartingPortion="true" scale="1">
        <BoundingBox>
          <gml:pos/>
          <gml:pos/>
        </BoundingBox>
      </RouteGeometryRequest>
      <RouteMapRequest>
        <Output BGcolor="" format="" height="600" transparent="false" width="800"/>
      </RouteMapRequest>
    </DetermineRouteRequest>
  </Request>
</XLS>

Example 14-6 is part of the response to the request in Example 14-5. Example 14-6 shows the total estimated driving time, the total distance, the lower-left and upper-right longitude/latitude coordinates of the minimum bounding rectangle that encloses the route, and the longitude/latitude coordinates of the first few points along the line geometry representing the route.

Example 14-6 OpenLS Routing Response

<xls:XLS
  xmlns:xls=http://www.opengis.net/xls
  xmlns:gml=http://www.opengis.net/gml
  xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance
  xsi:schemaLocation="http://www.opengis.net/xls …"
  version="1.1">
  <xls:ResponseHeader/>
  <xls:Response numberOfResponses="1" requestID="12345" version="1.0">
    <xls:DetermineRouteResponse>
      <xls:RouteSummary>
        <xls:TotalTime>P0DT0H42M26S</xls:TotalTime>
        <xls:TotalDistance uom="M" value="61528.7"/>
        <xls:BoundingBox srsName="4326">
          <gml:pos dimension="2" srsName="4326">-71.45937289088023 42.36694</gml:pos>
          <gml:pos dimension="2" srsName="4326">-71.06754 42.70824</gml:pos>
        </xls:BoundingBox>
      </xls:RouteSummary>
      <xls:RouteGeometry>
        <gml:LineString srsName="4326">
          <gml:pos
            xmlns:gml=http://www.opengis.net/gml
            dimension="2"
            srsName="4326">-71.07444,42.36792</gml:pos>
          <gml:pos
            xmlns:gml=http://www.opengis.net/gml
            dimension="2"
            srsName="4326">-71.07162,42.37082</gml:pos>
          <gml:pos
            xmlns:gml=http://www.opengis.net/gml
            dimension="2"
            srsName="4326">-71.06954,42.37333</gml:pos>
. . .

14.3.4 OpenLS Directory Service (YP)

An OpenLS directory service <Request> element includes the methodName attribute with a value of DirectoryRequest, and a top-level element named <DirectoryRequest>.

The <DirectoryRequest> element contains a <POILocation> element that specifies the location of a point of interest, that is, the center point from which to compute distances of returned businesses.

The <DirectoryRequest> element also contains a <POIProperties> element that specifies one or more <POIProperty> elements, each of which contains a name attribute identifying a property and a value attribute identifying the value for the property. The name attribute can specify any of the following strings: ID, POIName, PhoneNumber, Keyword, NAICS_type, NAICS_subType, NAICS_category, SIC_type, SIC_subType, SIC_category, SIC_code, or other.

Example 14-7 is a request for information about business that have either or both of two specified SIC (Standard Industrial Classification) codes. For this example, the two SIC codes (1234567890 and 1234567891) are fictitious, and they are being used with a limited test data set in which these codes have been applied to categories (Book stores and Cafes & Cafeterias) that do not have these SIC codes in the real world.

Example 14-7 OpenLS Directory Service (YP) Request

<XLS
  xmlns=http://www.opengis.net/xls
  xmlns:gml=http://www.opengis.net/gml
  xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance
  xsi:schemaLocation="http://www.opengis.net/xls …"
  version="1.0">
  <RequestHeader clientName="someName" clientPassword="somePwd"/>
  <Request
    requestID="123"
    maximumResponses="100"
    version="1.1"
    methodName="DirectoryRequest">
    <DirectoryRequest>
      <POILocation>
        <Address countryCode="US">
        </Address>
      </POILocation>
      <POIProperties>
        <POIProperty name="SIC_code" value="1234567890"/>
        <POIProperty name="SIC_code" value="1234567891"/>
      </POIProperties>
    </DirectoryRequest>
  </Request>
</XLS>

Example 14-8 is the response to the request in Example 14-7. The response contains information about two businesses for which either or both of the specific SIC codes apply.

Example 14-8 OpenLS Directory Service (YP) Response

<xls:XLS
  xmlns:xls=http://www.opengis.net/xls
  xmlns:gml=http://www.opengis.net/gml
  xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance
  version="1.0">
  <xls:ResponseHeader/>
  <xls:Response requestID="123" version="1.1">
    <DirectoryResponse xmlns="http://www.opengis.net/xls">
      <xls:POIContext xmlns:xls="http://www.opengis.net/xls">
        <xls:POI
          ID="1"
          POIName="Borders Books &amp; More"
          phoneNumber="415-731-0665"
          description="Books &amp; more">
          <POIAttributeList xmlns="http://www.opengis.net/xls">
            <xls:SIC
              xmlns:xls=http://www.opengis.net/xls
              category="Book stores"
              code="1234567890"
              subType=""
              type=""/>
            <xls:SIC
              xmlns:xls=http://www.opengis.net/xls
              category="Cafes &amp; Cafeterias"
              code="1234567891"
              subType="" type=""/>
          </POIAttributeList>
          <gml:Point xmlns:gml="http://www.opengis.net/gml">
            <gml:pos dimension="2" srsName="4326">-122.4753965 37.7269066</gml:pos>
          </gml:Point>
          <xls:Address countryCode="US">
            <xls:StreetAddress>
              <xls:Building number="233"/>
              <xls:Street>Winston Drive</xls:Street>
            </xls:StreetAddress>
            <xls:Place type="CountrySubdivision">CA</xls:Place>
            <xls:Place type="CountrySecondarySubdivision"/>
            <xls:Place type="Municipality">San Francisco</xls:Place>
            <xls:Place type="MunicipalitySubdivision"/>
            <xls:PostalCode>94132</xls:PostalCode>
          </xls:Address>
        </xls:POI>
      </xls:POIContext>
      <xls:POIContext xmlns:xls="http://www.opengis.net/xls">
        <xls:POI
          ID="2"
          POIName="Borders Books &amp; More"
          phoneNumber="415-399-1633"
          description="Books &amp; more">
          <POIAttributeList xmlns="http://www.opengis.net/xls">
            <xls:SIC
              xmlns:xls=http://www.opengis.net/xls
              category="Book stores"
              code="1234567890"
              subType=""
              type=""/>
            <xls:SIC
              xmlns:xls=http://www.opengis.net/xls
              category="Cafes &amp; Cafeterias"
              code="1234567891"
              subType=""
              type=""/>
          </POIAttributeList>
          <gml:Point xmlns:gml="http://www.opengis.net/gml">
            <gml:pos dimension="2" srsName="4326">-122.4083257 37.788208</gml:pos>
          </gml:Point>
          <xls:Address countryCode="US">
            <xls:StreetIntersection>
              <xls:Street>Post St</xls:Street>
              <xls:IntersectingStreet>Powell St</xls:IntersectingStreet>
            </xls:StreetIntersection>
            <xls:Place type="CountrySubdivision">CA</xls:Place>
            <xls:Place type="CountrySecondarySubdivision"/>
            <xls:Place type="Municipality">San Francisco</xls:Place>
            <xls:Place type="MunicipalitySubdivision"/>
            <xls:PostalCode>94102</xls:PostalCode>
          </xls:Address>
        </xls:POI>
      </xls:POIContext>
    </DirectoryResponse>
  </xls:Response>
</xls:XLS>