Proposal 2007-01 : OGC:GetCapabilities harvesting

Date	2007/12/07
Contact(s)	​François Prunayre
Last edited	Timestamp
Status	draft
Assigned to release	Release number, to be determined
Resources	Indicate if the required resources are available to complete the proposal

Overview

Use the OGC:GetCapabilities document to produce metadata for services and layers in ISO19119/139 format

• add metadata of services based on ISO19119 in GeoNetwork.
• add import XML document functionnality using XSLT stylesheet
• add harwest WxS GetCapabilities

Proposal Type

• Type: New functionality
• App: GeoNetwork
• Module: Harvester, Metadata Import

Links

• Documents:
• Email discussions:
  • ​Thread 1
  • ​Thread 2

• Other wiki discussions:

Voting History

• Vote not yet proposed.

Uses cases

• UC1 : Create metadata using copy/paste the GetCapabilities document of a WxS service (i.e. Create a full ISO19119 MD based on a GetCapabilities request)
• UC2 : Harvest metadata from a WxS service (i.e. Create a full ISO19119 MD based on a GetCapabilities request)
• UC3 : Update Bbox section of a dataset metadata based on WMS GetCapabilities info (i.e. Update part of MD based on a Request)

Import GetCapabilities document

Harvest GetCapabilities document

Parameters

• Input parameter : URL of the service for which to create metadata
• Ouput parameter :
  • ISO19119 metadata xml file to be load into GeoNetwork
  • ISO19139 metadata for each layers of the services
  • (optional) thumbnails

GUI

Import

Harvesting

Mapping

Service

Root element:

• WMS = WMT_MS_Capabilities
• WFS = WMT_MS_Capabilities
• WCS = WCS_Capabilities

• Service metadata /gmd:MD_Metadata
• Service Identfication /gmd:identificationInfo/srv:SV_ServiceIdentification

Element	ISO19119 equivalent	GetCapabilities element	Note
Service metadata
Identifier	/gmd:fileIdentifier/gco:CharacterString	WxS = uuid	Service url
Language	/gmd:language/gco:characterString	« eng »	Par défaut « eng »
CharacterSet	/gmd:CharacterSet/gmd:MD_CharacterSetCode	« utf8 »
Contact	/gmd:contact	cf
Date stamp	/gmd:dateStamp/gco:DateTime
Standard name	/gmd:metadataStandardName/gco:CharacterString	« ISO 19119 »
Standard version	/gmd:metadataStandardVertsion/gco:CharacterString	1
Service Identfication
Title	/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString	/ROOT/Service/Title
Date	/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date/gmd:date/gco:dateTime	CI_DateTypeCode?
Abstract	/gmd:abstract/gco:CharacterString	/ROOT/Service/Abstract pour WMS et WFS, /ROOT/Service/Label pour WCS
Status	/gmd:status/gmd:MD_ProgressCode	« Completed »
Contact	/gmd:pointOfContact	cf
Keyword	/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword/gco:CharacterString	/ROOT/Service/KeywordList/Keyword	« theme » for type
Topic Category	/gmd:topicCategory/gmd:MD_TopicCategoryCode		User input
Service type	/srv:serviceType/gco:LocalName codeSpace="www.w3c.org"	« OGC:WMS » ou « OGC:WFS » ou « OGC:WCS »	user input
Service version	/srv:serviceTypeVersion/gco:CharacterString	/ROOT/@version eg. « 1.0.0 »
Fees	/srv:accessProperties/gmd:MD_StandardOrderProcess/gmd:fees/gco:CharacterString	/ROOT/Service/Fees
AccessConstraint	/gmd:resourceConstraints/gmd:MD_Constraints/gmd:useLimitation	/ROOT/Service/AccessConstraints
Operations	/srv:containsOperations/srv:SV_OperationMetadata/srv:operationName/gco:CharacterString	/ROOT/Capability/Request/*	cf
OperatesOn	/srv:operatesOn/gmd:MD_DataIdentification/@uuidref	ID des métadonnées de données générées
Bounding box	/srv:SV_ServiceIdentification/srv:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox	EX_GeographicBoundingBox
CRS	referenceSystemInfo/MD_ReferenceSystem/referenceSystemIdentifier/RS_Identifier/code		4326 if available if not the first one
Status	/srv:SV_ServiceIdentification/status/MD_ProgressCode	« completed »

Link between data and service:

<srv:operatesOn>
        <gmd:MD_DataIdentification uuid='identifier'/>
</srv:operatesOn>

Data

Root element:

• WMS = WMT_MS_Capabilities/Capability/Layer
• WFS = WFS_Capabilities/FeatureTypeList/FeatureType
• WCS = WCS_Capabilities/ContentMetadata/CoverageOfferingBrief

• Data metadata = /gmd:MD_Metadata
• Layer identification = gmd:identificationInfo/srv:SV_ServiceIdentification
• Distribution = gmd:distributionInfo/gmd:MD_Distribution/gmd:transferOptions/gmd:MD_DigitalTransferOptions/gmd:onLine/gmd:CI_OnlineResource
• Data quality = gmd:dataQualityInfo/gmd:DQ_DataQuality
• Projection = gmd:referenceSystemInfo/gmd:MD_ReferenceSystem/gmd:referenceSystemIdentifier/gmd:RS_Identifie

Element	ISO19115 equivalent	GetCapabilities element	Note
Service metadata
Identifier	/gmd:fileIdentifier/gco:CharacterString	uuid	Problème d'unicité ?
Language	/gmd:language/gco:characterString	« eng »	Par défaut « eng »
CharacterSet	/gmd:CharacterSet/gmd:MD_CharacterSetCode	« utf8 »
Contact	/gmd:contact	cf
Date stamp	/gmd:dateStamp/gco:DateTime		Date et heure de l'import
Standard name	/gmd:metadataStandardName/gco:CharacterString	« ISO 19115:2003/19139 »
Standard version	/gmd:metadataStandardVersion/gco:CharacterString	1
Layer identification
Title	/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString	/ROOTLayer|FeatureType|CoverageOfferingBrief/Title|Description or Label (for WCS)
Date	/gmd:citation/gmd:CI_Citation/gmd:date/gmd:CI_Date/gmd:date/gco:dateTime	Date et heure de l'import CI_DateTypeCode?
Abstract	/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString	/ROOTLayer|FeatureType|CoverageOfferingBrief/Abstract|Description
LatLonBoundingBox	/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/ gmd:westBoundLongitude|gmd:eastBoundLongitude|gmd:southBoundLatitude|gmd:northBoundLatitude/gco:Decimal	/ROOTLayer|FeatureTypeLatLonBoundingBox/@
Status	/gmd:status/gmd:MD_ProgressCode	« Completed »
Contact	/gmd:pointOfContact	cf
Scale	/gmd:spatialResolution/gmd:MD_Resolution/gmd:equivalentScale/gmd:MD_RepresentativeFraction/gmd:denominator/gco:Integer	/ROOTLayer|FeatureType|CoverageOfferingBrief/MinScaleDenominator	MaxScaleDenominator
Projection
	/gmd:code/gco:CharacterString		Code Epsg Format ?
Distribution
URL	/gmd:linkage/gmd:URL	[Root]/Service/OnlineResource
Protocol	/gmd:protocol/gco:CharacterString	TO BE DEFINED	mime-type ou liste GeoNetwork
Name	/gmd:name/gco:CharacterString	/ROOTLayer|FeatureType|CoverageOfferingBrief/Name
Description	/gmd:description/gco:CharacterString	/ROOTLayer|FeatureType|CoverageOfferingBrief/Title|Label
Data Quality
Topic	/gmd:scope/gmd:DQ_Scope/gmd:level/gmd:MD_ScopeCode		« dataset », « featureType » Coverage ?

Contact

Element	ISO19115 equivalent	GetCapabilities element	Note
Name	/gmd:individualName/gco:CharacterString	WMT_MS_Capabilities/Service/contactInformation/ContactPersonPrimary/ContactPerson
Organisation	/gmd:organisationName/gco:CharacterString	WMT_MS_Capabilities/Service/contactInformation/ContactPersonPrimary/ContactOrganization
Role	/gmd:role/gmd:CI_RoleCode	« pointOfContact »
Phone gmd:phone/gmd:CI_Telephone
Voice	/gmd:voice/gco:CharacterString	ContactVoiceTelephone
Fax	/gmd:facsim/gco:CharacterString	ContactFacsimileTelephone
Address gmd:address/gmd:CI_Address
Delivery point	/gmd:deliveryPoint/gco:CharacterString	ContactAddress/Address
Administrative	/gmd:administrativeArea/gco:CharacterString	ContactAddress/StateOrProvince
City	/gmd:city/gco:CharacterString	ContactAddress/City
PostCode	/gmd:postalCode/gco:CharacterString	ContactAddress/PostCode
Country	/gmd:country/gco:CharacterString	ContactAddress/Country
Email	/gmd:electronicMailAddress/gco:CharacterString	email?

Operation

• Identification = /MD_Metadata/srv:SV_ServiceIdentification
• Operation = /MD_Metadata/srv:SV_ServiceIdentification/srv:containsOperations/srv:SV_OperationMetadata/

Element	ISO19119 equivalent	GetCapabilities element	Note
Identification
Coupling type	/srv:couplingType	« tight »
Operation
Name	/srv:operationName/gco:CharacterString	/ROOT/Capability/Request/child::name()
DCP	/srv:DCP/srv/DCPList	/ROOT/DCPType/child::name()
URL	/srv:connectPoint/gmd:CI_OlineRessource/gmd:linkage/gmd:URL	/ROOT/DCPTypeOnlineResource/@xlink:href
Protocol	/srv:connectPoint/gmd:CI_OlineRessource/gmd:protocol/gco:CharacterString		Note : mime-type ? « HTTP GET », « HTTP POST »
Function	/srv:connectPoint/gmd:CI_OlineRessource/gmd:function	« Information »