Note that the examples in this chapter use SOAP v11 in Visual Studio .NET

Generation Quick Response Code in Visual Studio .NET Note that the examples in this chapter use SOAP v11
Note that the examples in this chapter use SOAP v11
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Understanding Web Services- XML, WSDL, SOAP and UDDI
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Skateboots can always execute another save_business operation to add to the basic information required to create a business entity Most likely, Skateboots Company will want to include one or more identifiers and category IDs and link its two Web services for PreSeason and In-season orders to tModel information
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Retrieving Information
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After Skateboots Company has updated its UDDI entry with the relevant information, companies that want to become Skateboots distributors can look up contact information in the UDDI registry and obtain the service descriptions and the access points for the two Web services that Skatebootscom publishes for online order entry: preseason bulk orders and in-season restocking orders Customers retrieve the information
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POST /get_businessDetail HTTP/11 Host: wwwskatebootscom Content-Type: text/xml; charset="utf-8" Content-Length: nnnn SOAPAction: "get_businessDetail" < xml version="10" encoding="UTF-8" > <Envelope xmlns="http://schemas/xmlsoaporg/soap/envelope/"> <Body> <get_businessDetail generic="20" xmlns="urn:uddi-org:api_v2"> <businessKey="C90D731D-777D-4130-9DE3-5303371170C2"> </businessKey> </get_businessDetail> </Body> </Envelope>
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This example illustrates a sample SOAP request to obtain business detail information about the Skateboots Company Once you know the UUID, or key, for the specific business that's been registered, you can use it in the get_businessDetail API to return specific information about that business Normally, to refine the initial search, you might send a message to UDDI containing the business name or a partial name with a wildcard to see whether you can get any matches
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<businessList generic="20" operator="uddisourceOperator" truncated="false" xmlns:="urn:uddi-org:api_v2"> <businessInfos> <businessInfo businessKey="C90D731D-777D-4130-9DE3 5303371170C2"> <name>Skateboots Inc</name> <serviceInfos> <serviceInfo serviceKey="D90D731D-777D-4130 9DE3-"> <name>PreSeason Orders</name> </serviceInfo> <serviceInfo serviceKey="E90D731D-777D-4130 9DE3-"> <name>In-season Orders</name> </serviceInfo>
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Understanding Web Services- XML, WSDL, SOAP and UDDI
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</serviceInfos> </businessInfo> <businessInfo> [more Skateboot manufacturers] </businessInfos> </businessList>
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The preceeding example illustrates a sample message that might be returned from any of the UDDI operators on receipt of the find_business request The service information the serviceKey is then used to locate the binding information that is needed to interact with the preseason and in-season Web services Another approach would have been to search for the tModel definition of the service, using identifier or category search IDs But in this case, the distributor knows that only one company manufacturers the particular skateboots it wants to sell, so it's unlikely that a generic service exists for ordering from the factory Alternatively, search using the tModel
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Figure 5-4 illustrates sample information stored in UDDI for the Skateboots Company's Web services after it's done registering A more complete entry would include identifiers and category taxonomy information, which also contain pointers to tModel structures, providing an alternative traversal path for obtaining service information Figure 5-4 This sample shows a partial UDDI entry for Skatebootscom
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The sample in Figure 5-4 shows a straightforward traversal path, starting with an inquiry on the businessEntity for Skateboots and from that entry is able to find the contact information
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Understanding Web Services- XML, WSDL, SOAP and UDDI
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stored within the businessEntity structure and locate the Web services information via the binding template
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Using WSDL with UDDI
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The UDDI data model defines a generic structure for storing information about a business and the Web services it publishes The UDDI data model is completely extensible, including several repeating sequence structures of information Although it was designed and specified before WSDL, UDDI did anticipate the need for something like WSDL to be included However, UDDI is designed and intended to work with any service description language UDDI includes data structures appropriate for storing protocol bindings and network services WSDL is fairly straightforward to use with UDDI
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WSDL
represented
UDDI
using
combination
businessService,
bindingTemplate, and tModel information
As with any service registered in UDDI, generic information about the service is stored in the businessService data structure, and information specific to how and where the service is accessed is stored in one or more associated bindingTemplate structures Each bindingTemplate structure includes an element that contains the network address of the service and has associated with it one or more tModel structures that describe and uniquely identify the service WSDL information is divided between generic service information and specific binding information
The business service information describes the Web services A binding template contains technical information about a service entry point and construction specifications The tModel contains descriptions of the specifications for services or taxonomies, which are the basis for a technical fingerprint for the service specification The access point in the binding template gives the end-point address of the Web service It's possible to store WSDL information in several ways in UDDI, given UDDI's flexibility and extensibility WSDL best-practice authors recommend splitting the reusable information from the information specific to a given service Although WSDL is not required for registry with UDDI, IBM's toolkit anticipates the usefulness of registering WSDL in UDDI by dividing WSDL into two main parts for proper fit into UDDI: service interface and service implementation Figure 5-5 shows how the WSDL parts fit into this split The split is recommended so that information common to a category of business, such as message formats and data types, port types, and protocol bindings, are in the reusable portion, whereas the information about a particular service end point; that is, the port definition, is included in the service implementation definition portion Figure 5-5 The WSDL parts list can be grouped according to recommended UDDI split