wsdl_web

Document Sample
wsdl_web Powered By Docstoc
					CIS 375—Web App Dev II


       WSDL
     Introduction toWSDL
   WSDL stands for Web __________ Description
    Language
   WSDL is written in ______
   WSDL is an XML document
   A WSDL document specifies the location of a Web
    service and the operations the service exposes.
   WSDL is not yet a W3C standard




                                                 2
          WSDL Documents
   A WSDL document is just a simple _____ document.
   A WSDL document defines a web service using
    these major elements:
       <portType> The ________ performed by the web service
       <message> The messages used by the web service
       <types> The data types used by the web service
       <binding> The communication ________ used by the
        web service
   Structure of a WSDL document:
<definitions>
<types> definition of types........ </types>
<message> definition of a message.... </message>
<portType> definition of a port....... </portType>
<binding> definition of a binding.... </binding>
</definitions>                                           3
          WSDL Elements (1)
   WSDL Ports
       The <portType> element is the most important.
       It defines a web service, the operations that can be
        performed, and the messages that are involved.
       The <portType> element can be compared to a ________
        library (a module, a class) in a programming language.
   WSDL Messages
       The <message> element defines the _____ elements of
        an operation.
       Each message can consist of one or more parts.
       The parts can be compared to the ___________ of a
        function call in a programming language.
                                                          4
          WSDL Elements (2)
   WSDL Types
       The <types> element defines the data type that are used
        by the web service.
       For maximum platform neutrality, WSDL uses XML
        _______ syntax to define data types.
   WSDL Bindings
       The <binding> element defines the message format and
        _________ details for each port.




                                                            5
         WSDL Example
<message name="getTermRequest">
   <part name="term" type="xs:string"/>
</message>
<message name="getTermResponse">
   <part name="value" type="xs:string"/>
</message>
<portType name="glossaryTerms">
   <operation name="getTerm">
       <input message="getTermRequest"/>
       <output message="getTermResponse"/>
   </operation>
</portType>
   Compared to traditional programming, “glossaryTerms” is a
    function ________, “getTerm” is a ________ with
    “getTermRequest” as the _______ parameter and
    “getTermResponse” as the return parameter.             6
          WSDL Ports
   A WSDL port describes the __________ (legal
    operations) exposed by a web service.
   Operation Types
       One-way: The operation can receive a message but will
        not return a response
       Request-response: The operation can receive a request
        and will return a response
       Solicit-response: The operation can send a request and
        will wait for a response
       Notification: The operation can send a message but will
        not wait for a response

                                                              7
         One-Way Operation
<message name="newTermValues">
   <part name="term" type="xs:string"/>
   <part name="value" type="xs:string"/>
</message>
<portType name="glossaryTerms">
   <operation name="setTerm">
       <input name="newTerm" message="newTermValues"/>
   </operation>
</portType >
   The port "glossaryTerms" defines a one-way operation called
    "setTerm".
   The "setTerm" operation allows input of new glossary term
    messages using a "newTermValues" message with the input
    parameters "term" and "value".
   However, no _______ is defined for the operation.
                                                           8
        Request-Response Operation
<message name="getTermRequest">
   <part name="term" type="xs:string"/>
</message>
<message name="getTermResponse">
   <part name="value" type="xs:string"/>
</message>
<portType name="glossaryTerms">
   <operation name="getTerm">
       <input message="getTermRequest"/>
       <output message="getTermResponse"/>
   </operation>
</portType>
   The port "glossaryTerms" defines a request-response
    operation called "getTerm".
   The "getTerm" operation requires an ______ message called
    "getTermRequest" with a parameter called "term“.
   It will return an _______ message called "getTermResponse"
    with a parameter called "value".
                                                          9
          WSDL Bindings
<binding type="glossaryTerms" name="b1">
<soap:binding style="document"
   transport="http://schemas.xmlsoap.org/soap/http" />
   <operation>
        <soap:operation SoapAction="http://example.com/getTerm"/>
        <input> <soap:body use="literal"/> </input>
        <output> <soap:body use="literal"/> </output>
   </operation>
</binding>
   The binding element has two attributes.
       The name attribute can be anything you want.
       The type attribute points to the port for the binding.
   The soap:binding element has two attributes.
       The style attribute can be "rpc" or "document".
       The transport attribute defines the SOAP protocol to use.
   The operation element defines each operation.
   For each operation the corresponding SOAP action is defined.
   You must also specify how the input and output are encoded.
    In this case we use "literal".                           10
         WSDL and UDDI
   UDDI is a platform-independent framework for
    describing services, discovering businesses, and
    integrating business services by using the Internet.
       UDDI: Universal Description, Discovery and ___________
       UDDI is a directory for storing info about web services
       UDDI is a directory of web service interfaces
       UDDI communicates via ______
       UDDI is built into the Microsoft _____ platform
   UDDI is a cross-industry effort driven by all major
    platform and software providers and e-business
    leaders.
                                                           11
        Some WSDL Tutorials
   Site with many WSDL tutorials
   WSDL learning guide
   A Busy Developer's Guide to WSDL 1.1
   WSDL client tutorial
   Hello World Tutorial




                                           12

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:3
posted:2/28/2012
language:
pages:12