Changes between Version 7 and Version 8 of Discovery/DiscoveryWebServiceMEDIN


Ignore:
Timestamp:
06/11/09 09:21:17 (10 years ago)
Author:
mpritcha
Comment:

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  • Discovery/DiscoveryWebServiceMEDIN

    v7 v8  
    2929== XML Data Types == 
    3030 
    31 The XML documents used as request and response documents for each of the service operations (methods) are defined in the <xs:schema> section of the WSDL document. The structure of each of these documents is discussed as part of the [#DiscoveryServiceMethods operation/method descriptions] below. 
     31The XML documents used as request and response messages for each of the service operations (methods) are defined in the <xs:schema> section of the WSDL document. The structure of each of these messages is discussed as part of the [#DiscoveryServiceMethods operation/method descriptions] below. Automatically-generated documentation for the schema showing the full structure is available [here]. 
    3232 
    3333== Discovery Service Operations == 
     
    9595Although outside the scope of the Discovery web service itself, it is worth explaining the structure of the NDG Discovery database which is searched by the service. This is populated from records harvested via [http://www.openarchives.org/pmh/ OAI-PMH (Open Archives Initiative Protocol for Metadata Harvesting)] from collaborating data providers. Records are harvested in the ISO19115-compliant metadata format agreed by the NERC Metadata Standards Working Group (MEDIN ISO v2.3.1) with legacy support for the previous format (DIF v9.4), and are tagged at ingest time with one or more "scope" keywords (listed in the scopeList list available from the getList operation). These enable the search to be restricted to particular communities, namely NERC, NERC_DDC (Designated Data Centres) and MEDIN (Marine Environmental Data Information Network). Limited quality control on ingested records is also applied at ingest time, but it is the responsibility of the data provider to ensure that metadata records are provided to sufficient quality to enable them to be visible in the system. 
    9696 
    97 The doSearchRequest message is shown in schema form in fig X.  
    98  
    99 #![[Image(doSearchSchema.png)]] 
     97The doSearchRequest message is shown in schema form in fig X (click image to enlarge).  
     98 
     99[[Image(doSearchSchema.png, 350px)]] 
    100100 
    101101=== Choice of search criteria: <termSearch>, <spatialSearch> and <temporalSearch> ===