Web services wsdl

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WSDL (Web Services Description Language) is an XML format for describing web services and how they communicate. It defines three key aspects of a web service: what operations it performs, how messages are formatted and transmitted, and where the service can be accessed. A WSDL document uses elements like types, message, portType, binding, and service to describe these aspects. Tools exist to generate code from a WSDL that allows programs to access the defined web service.

WSDL
• Web Service Definition Language
• Predecessors include
– COM, CORBA IDLs
– Network Accessible Service Specification
Language (IBM)
– SOAP Contract Language (Microsoft)
– First submitted to W3C in Sep 2000
– Current version is 1.1

WSDL
• Define a web service in WSDL by
– Writing an XML document conforming to the WSDL specs
• Describes three fundamental properties
– What a service does
• Operations (methods) provided by the service
– How a service is accessed
• Data format and protocol details
– Where a service is located
• Address (URL) details

WSDL Components
types
message
portType
binding
service
All the data types used by the Web service
Parameters and messages used by method
port
Abstract interface definition – each operation element defines
a method signatureoperation
Binds abstract methods to specific protocols
A service is a collection of ports.
A port is a specific method and its URI
definitions

Sample WSDL: getQuote
<?xml version="1.0" encoding="UTF-8" ?>
<definitions name="net.xmethods.services.stockquote.StockQuote"
targetNamespace="http://www.themindelectric.com/wsdl/net.xmethods.services.stockquo
te.StockQuote/"
xmlns:tns="http://www.themindelectric.com/wsdl/net.xmethods.services.stockquote.Sto
ckQuote/"
xmlns:electric="http://www.themindelectric.com/"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
xmlns="http://schemas.xmlsoap.org/wsdl/">
<message name="getQuoteResponse1">
<part name="Result" type="xsd:float" />
</message>
<message name="getQuoteRequest1">
<part name="symbol" type="xsd:string" />
</message>

Sample WSDL: getQuote
<portType name="net.xmethods.services.stockquote.StockQuotePortType">
<operation name="getQuote" parameterOrder="symbol">
<input message="tns:getQuoteRequest1" />
<output message="tns:getQuoteResponse1" />
</operation>
</portType>
<binding name="net.xmethods.services.stockquote.StockQuoteBinding“
type="tns:net.xmethods.services.stockquote.StockQuotePortType">
<soap:binding style="rpc"
transport="http://schemas.xmlsoap.org/soap/http" />
<operation name="getQuote">
<soap:operation soapAction="urn:xmethods-delayed-quotes#getQuote" />
<input>
<soap:body use="encoded" namespace="urn:xmethods-delayed-quotes"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />
</input>
<output>
<soap:body use="encoded" namespace="urn:xmethods-delayed-quotes"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />
</output>
</operation>
</binding>

Sample WSDL: getQuote
<service name="net.xmethods.services.stockquote.StockQuoteService">
<documentation>net.xmethods.services.stockquote.StockQuote web service
</documentation>
<port name="net.xmethods.services.stockquote.StockQuotePort"
binding="tns:net.xmethods.services.stockquote.StockQuoteBinding">
<soap:address location="http://64.39.29.211:9090/soap" />
</port>
</service>
</definitions>

WSDL to Code
• Translators available that can
– Convert WSDL document to code
• IBM’s WSTK Toolkit
• Apache AXIS WSDL2java program
• Soapy.py in Python
• Not perfect
– Derive WSDL from Java classes
• Apache WSDL program
• Much work remains to be done

Roadmap
Registry
(UDDI)
Service
Requestor
Service
Provider
Find
Publish
Bind
(SOAP)
(SOAP)
(WSDL)

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Maven is a build tool used to manage Java projects and automate build processes. It is based on the Project Object Model (POM) and uses repositories to retrieve dependencies. Maven projects have a standard directory structure and are composed of parent projects and child modules. The POM defines project details like dependencies, reports, and build configuration. Maven can generate artifacts like JARs, WARs, and EARs through its plugins and goals. It handles tasks like compiling, testing, packaging, and deploying in an automated way.

Mule esb dataweaveRajkattamuri

Mule with drools Rajkattamuri

This document discusses using Drools, a business rules management system, with Mule to execute business rules in applications. It provides an example of creating a simple Mule application that uses a .drl file to define rules to determine a warehouse destination based on a randomly generated weight variable. The application is deployed to a Mule standalone server and the rules are executed by the Drools component to set the destination variable according to the rules.

Mule with quartz Rajkattamuri

Quartz transport in Mule allows scheduling inbound and outbound events. Cron expressions are used to define schedules and can be simple, like running every minute, or complex, like running on specific dates and times. Jobs are used to perform scheduled actions. An example application demonstrates writing a file to an outbound folder at a scheduled interval using Quartz, with the files appearing as scheduled.

Mule with rabbitmqRajkattamuri

RabbitMQ is an open source message broker software written in Erlang. It uses exchanges to route messages from producers to queues based on routing keys or bindings. There are four main exchange types - direct, fanout, topic, and headers. Mule connects to RabbitMQ using the AMQP connector. Flows in Mule can send messages to queues via exchanges and receive messages from queues via exchanges, as demonstrated using a direct exchange to send a message to a queue and have another flow receive it.

Mule with velocityRajkattamuri

Mule can be used to send emails with dynamically generated content from a Velocity template. A Velocity transformer class maps external properties to the email template. The template uses HTML tags to design the email with colors, images, and logos. Dynamic values like names are populated from a properties file. When a file is processed, its content is appended to the email sent using the Velocity template.

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Java BasicsRajkattamuri

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MavenRajkattamuri

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Web services wsdl

1. Web Services Using WSDL

2. WSDL • Web Service Definition Language • Predecessors include – COM, CORBA IDLs – Network Accessible Service Specification Language (IBM) – SOAP Contract Language (Microsoft) – First submitted to W3C in Sep 2000 – Current version is 1.1

3. WSDL • Define a web service in WSDL by – Writing an XML document conforming to the WSDL specs • Describes three fundamental properties – What a service does • Operations (methods) provided by the service – How a service is accessed • Data format and protocol details – Where a service is located • Address (URL) details

4. WSDL Components types message portType binding service All the data types used by the Web service Parameters and messages used by method port Abstract interface definition – each operation element defines a method signatureoperation Binds abstract methods to specific protocols A service is a collection of ports. A port is a specific method and its URI definitions

5. Sample WSDL: getQuote <?xml version="1.0" encoding="UTF-8" ?> <definitions name="net.xmethods.services.stockquote.StockQuote" targetNamespace="http://www.themindelectric.com/wsdl/net.xmethods.services.stockquo te.StockQuote/" xmlns:tns="http://www.themindelectric.com/wsdl/net.xmethods.services.stockquote.Sto ckQuote/" xmlns:electric="http://www.themindelectric.com/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns="http://schemas.xmlsoap.org/wsdl/"> <message name="getQuoteResponse1"> <part name="Result" type="xsd:float" /> </message> <message name="getQuoteRequest1"> <part name="symbol" type="xsd:string" /> </message>

6. Sample WSDL: getQuote <portType name="net.xmethods.services.stockquote.StockQuotePortType"> <operation name="getQuote" parameterOrder="symbol"> <input message="tns:getQuoteRequest1" /> <output message="tns:getQuoteResponse1" /> </operation> </portType> <binding name="net.xmethods.services.stockquote.StockQuoteBinding“ type="tns:net.xmethods.services.stockquote.StockQuotePortType"> <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http" /> <operation name="getQuote"> <soap:operation soapAction="urn:xmethods-delayed-quotes#getQuote" /> <input> <soap:body use="encoded" namespace="urn:xmethods-delayed-quotes" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" /> </input> <output> <soap:body use="encoded" namespace="urn:xmethods-delayed-quotes" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" /> </output> </operation> </binding>

7. Sample WSDL: getQuote <service name="net.xmethods.services.stockquote.StockQuoteService"> <documentation>net.xmethods.services.stockquote.StockQuote web service </documentation> <port name="net.xmethods.services.stockquote.StockQuotePort" binding="tns:net.xmethods.services.stockquote.StockQuoteBinding"> <soap:address location="http://64.39.29.211:9090/soap" /> </port> </service> </definitions>

8. WSDL to Code • Translators available that can – Convert WSDL document to code • IBM’s WSTK Toolkit • Apache AXIS WSDL2java program • Soapy.py in Python • Not perfect – Derive WSDL from Java classes • Apache WSDL program • Much work remains to be done

10. Roadmap Registry (UDDI) Service Requestor Service Provider Find Publish Bind (SOAP) (SOAP) (WSDL)

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