Introduction To Web Services

Introduction To Web Services

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  PresentsIntroduction ToWeb Services4Circles LLC Copyright
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  OverviewAs an examplewe consider Ashram Hotels, a five star hotel. Ashram Hotels has been in hospitality business for more than 20 years and has acquired many different application systems which work on different operating systems. Their goal is to facilitate data transfer between these systems and make data access seamless4 Circles LLC Copyright
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  DataData exists intext files, excel sheets, databases and other propretiary formats. These need to be transferred between one system to another say Housekeeping and Reservation systems.Data access to the user should be seamless – that they need not log on to different systems to access information. 4 Circles LLC Copyright
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  Ashram Hotels Technology-Systems4 Circles LLC CopyrightSYSTEMS Property Management System (PMS) will be off the shelf which is customizable.
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  Customer RelationshipManagement (CRM) will be compatible with PMS, Reservation System and other systems.e-Mail ServerCRMReservation SystemPMSSERVICESServices consists of: VOIP, e-Fax services for business/personal communication.
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  Wireless services forall wireless clients internal and external.
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  Delivery.com is aservice where guests can order from nearby restaurants, laundry etc. e-FaxVOIPG-MapsDelivery.comWireless
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  AccessTo access thevarious systems in previous slide employee and also guests (for some of the systems) need an interface (client interface). These can be a web page, an application, mobile device etc. The card key system also needs to de-activate when the guest checks out which is another client interface. 4 Circles LLC Copyright
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  Ashram Hotels Technology- Clients4 Circles LLC CopyrightCLIENTSSmartKey is a check in, frequent guest card and room key.
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  Kiosks areavailable for check-In and other guest services.
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  Microsoft Surface (MSSurface) available for guests in the lobby .
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  Online Reservations, WirelessCommunications and E-fax are other technical features available for guests.
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  Legacy methods ofreservations and check-in and out will also be options for guests – like reception desk, TV and even Fax. KiosksRoom Key/Check InMS SurfaceiPhoneOnline Res.Wireless DeviceseFaxTV Res.
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  IssuesThere are differentclients and systems which may not be compatible with some of the clients. With self-reservation on the rise Ashram hotels is behind the competition.Employees and guests need to refer to say Google Maps for directions rather than that being integrated. Reports to directors and executives takes many weeks to prepare. 4 Circles LLC Copyright
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  SolutionIntegrating these varioussystems to the clients is the solution. The best solution is to utilize what systems in place and integrate them with the clients and between themselves. The method of integration is called middleware services and sometimes loosely called web services- as most of the data is transferred over the web via HTTP protocol. 4 Circles LLC Copyright
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  Ashram Hotels –Integration Platform4 Circles LLC Copyright
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  Middleware Services4 CirclesLLC CopyrightEach system has different protocols to communicate with their middle-ware. Some use XML (a customized HTML) - a stream or a file is passed. Documents can also be passed between systemsMS technology ‘s SOAP has recently gained a lot of popularity with Web Services . Web Services is the global method which includes receiving messages from all kinds of clients i.e. wireless devices and traditional systems.Middleware Services can be loosely defined as services which bring about communication between heterogeneous application systems. E.g. J2EE app with .NET app or any other proprietary applications. The middleware connects users /systems with other systems.
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  Between SystemsMiddleware Systemsexist internally between say two or more systems which may have to be written. These integration APIs (Application Programming Interface) can be bought or written.WARNING: Sometimes an API is not available between systems. 4 Circles LLC Copyright
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  Web ServicesWhen twosystems cannot be integrated or an external client wants to get access one of the system say Expedia would like to access available rooms; then we define a middleware service for users/systems to access data on Ashram application system.To implement the middleware we use web services which use open protocol over HTML. As the data is request/response and is transmitted over the web these services are called web services. Amazon and Google provide web services for external users/vendors.4 Circles LLC Copyright
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  Web Services 2Whatare Web Services?Web services are application componentsWeb services communicate using open protocolsWeb services are self-contained and self-describingWeb services can be discovered using UDDIWeb services can be used by other applicationsXML is the basis for Web servicesReference: http://www.w3schools.com/webservices/ws_intro.asp4 Circles LLC Copyright
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  What is SOAP?SOAPis an XML-based protocol to let applications exchange information over HTTP.Or more simple: SOAP is a protocol for accessing a Web Service.SOAP stands for Simple Object Access ProtocolSOAP is a communication protocolSOAP is a format for sending messagesSOAP is designed to communicate via Internet SOAP is platform independentSOAP is language independentSOAP is based on XMLSOAP is simple and extensibleSOAP allows you to get around firewallsSOAP is a W3C standard4 Circles LLC Copyright
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  What is WSDLWSDLis an XML-based language for locating and describing Web services.WSDL stands for Web Services Description LanguageWSDL is based on XMLWSDL is used to describe Web servicesWSDL is used to locate Web servicesWSDL is a W3C standard4 Circles LLC Copyright
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  What is UDDI?UDDIis a directory service where companies can register and search for Web services.UDDI stands for Universal Description, Discovery and IntegrationUDDI is a directory for storing information about web servicesUDDI is a directory of web service interfaces described by WSDLUDDI communicates via SOAPUDDI is built into the Microsoft .NET platform4 Circles LLC Copyright
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  What is RESTweb service?A REpresentational State Transfer (REST) web service (also called a RESTfulweb service) is a web service implemented using HTTP and the principles of REST. It is a collection of resources, below defined aspects:the base URI for the web service, is http://example.com/resources/ the Internet media type of the data supported by the web service is often JSON, XML or YAML but can be any other valid Internet media type. the set of operations supported by the web service using HTTP methods (e.g., POST, GET, PUT or DELETE). The API must be hypertext driven.4 Circles LLC Copyright
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  Web Services SummaryWebservices elements are SOAP, WSDL and UDDI which communicate between applications over HTML protocol using XML based requests and responses. REST is also a different kind of web services which uses as end-points a URL. The best example of REST service is the web. 4 Circles LLC Copyright
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  City Stay Hotels– Integration Platform4 Circles LLC Copyright
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  A Use Case4Circles LLC CopyrightExternal VendorsGuest Requests TicketsTicketMasterSystem creates request Sends to middleware
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  Web ServicesOver twelveyears of experince in various industries implementing integration of different systems and applications using web services, middleware programs.Trained technical and non-technical personnel on web services, middleware technologies etc. Some clients who have benefitted : ResortQuestComcast, WildBlue, CenturyLinkHP, Motorola, Nextel.For more information contact 4 Circles via email rajeev@4circlesllc.com4 Circles LLC Copyright