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Difference between revisions of "Accessing a service"
(→Accessing a dedicated service) |
(→Accessing a dedicated service) |
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Line 10: | Line 10: | ||
<source lang="java"> | <source lang="java"> | ||
− | // use | + | // use the Service type to declare the service-access variable |
myService MyServiceType?{@dedicatedService} | myService MyServiceType?{@dedicatedService} | ||
// use the variable to call the service | // use the variable to call the service | ||
− | call myService. | + | call myService.theFunction() returning to theCallBack |
onException theExceptionHandler; | onException theExceptionHandler; | ||
/* | /* | ||
− | * create a new EGL project for " | + | * Specifically, create a new EGL project for |
− | * | + | * "Web 2.0 application with services". Add the |
− | * type valid input into the first text box; for example: | + | * the Service type shown next to the server package, |
+ | * and add the Handler type to the client package. | ||
+ | * | ||
+ | * Type valid input into the first text box; for example: | ||
* 5, 12, 4 | * 5, 12, 4 | ||
*/ | */ | ||
+ | // the file with a Service type | ||
+ | package server; | ||
+ | |||
+ | Service MyServiceType | ||
+ | |||
+ | // variables and constants can be here | ||
+ | |||
+ | function calculate(myScores Int[] in) returns (Decimal(4,2)) | ||
+ | numberOfScores, i, mySum Int; | ||
+ | numberOfScores = myScores.getSize(); | ||
+ | |||
+ | for (i from 1 to numberOfScores by 1) | ||
+ | mySum = myScores[i] + mySum; | ||
+ | end | ||
+ | |||
+ | return(mySum/numberOfScores); | ||
+ | end | ||
+ | end | ||
+ | |||
+ | // the file with a Handler type | ||
package client; | package client; | ||
Line 81: | Line 104: | ||
end | end | ||
end | end | ||
− | |||
− | |||
− | |||
− | |||
− | |||
</source> | </source> | ||
Revision as of 16:38, 9 February 2012
Contents
EDT version .7
In EDT version .7, a service is accessible only from a Rich UI application, and your task follows this pattern: declare a service-access variable and use it in a call statement.
Accessing a dedicated service
// use the Service type to declare the service-access variable myService MyServiceType?{@dedicatedService} // use the variable to call the service call myService.theFunction() returning to theCallBack onException theExceptionHandler; /* * Specifically, create a new EGL project for * "Web 2.0 application with services". Add the * the Service type shown next to the server package, * and add the Handler type to the client package. * * Type valid input into the first text box; for example: * 5, 12, 4 */ // the file with a Service type package server; Service MyServiceType // variables and constants can be here function calculate(myScores Int[] in) returns (Decimal(4,2)) numberOfScores, i, mySum Int; numberOfScores = myScores.getSize(); for (i from 1 to numberOfScores by 1) mySum = myScores[i] + mySum; end return(mySum/numberOfScores); end end // the file with a Handler type package client; import server.MyServiceType; import org.eclipse.edt.rui.widgets.GridLayout; import org.eclipse.edt.rui.widgets.TextField; import org.eclipse.edt.rui.widgets.GridLayoutData; import dojo.widgets.DojoButton; import dojo.widgets.DojoTextField; handler Test type RUIhandler{initialUI =[ui], onConstructionFunction = start, cssFile = "css/ProjectInEDT.7.css", title = "MyHandler"} ui GridLayout{columns = 3, rows = 4, cellPadding = 4, children =[myResult, myButton, scores]}; scores TextField{layoutData = new GridLayoutData{row = 2, column = 2}}; myButton DojoButton{layoutData = new GridLayoutData{row = 4, column = 2}, text = "Calculate", onClick ::= ui_onClick}; myResult DojoTextField{layoutData = new GridLayoutData{row = 4, column = 3}}; function start() end function theExceptionHandler(exp AnyException in) SysLib.writeStdOut(exp.message); end function theCallBack(retResult decimal(4, 2) in) myResult.text = retResult; end function ui_onClick(event Event in) inputLength int = scores.text.length(); myDelimiters string = ", "; myPosition int = 1; myToken string; myList int[]; while(myPosition < inputLength) myToken = StringLib.getNextToken(scores.text, myPosition, myDelimiters); if(myToken != null) myList.appendElement(myToken as int); end end myService MyServiceType?{@DedicatedService}; call myService.calculate(myList) returning to theCallBack onException theExceptionHandler; end end
Accessing an EGL REST-RPC service
Accessing a third-party REST service
EDT version .8
// From a a Access a dedicated service http HttpRest{request.uri="http:host\\myService"}; srvc IRest?; srvc = ServiceLib.completeBind(srvc, http);
Accessing HTTP request headers
http HttpRest{}; http.request.headers = new Dictionary { param1 = "a value to pass to my service" }; srvc IRest?{@Resource {}}; srvc = ServiceLib.completeBind(srvc, http);
HTTP request and response
function invokeDoSomething() call srvc.doSomething() returning to serviceCallback; end function serviceCallback(returnValueOne String, callbackHttp IHTTP in) // process callback request or response end