Since some people seems to have issues to use the Flex/ColdFusion
connectivity, here is a sample app to test your connectivity.
------------------------
ColdFusion / Server side
------------------------
Save the following value object CFC in
{wwwroot}/com/mycompany/myapp/model/TestVO.cfc
<cfcomponent>
<cfproperty name="someString" type="String" />
<cfproperty name="someNumber" type="Numeric" />
<cffunction name="init" returntype="com.mycompany.myapp.model.TestVO">
<cfscript>
this.someString = "test";
this.someNumber = 0;
</cfscript>
<cfreturn this />
</cffunction>
</cfcomponent>
Save the following remote service CFC in
{wwwroot}/com/mycompany/myapp/service/TestService.cfc
<cfcomponent>
<cffunction name="getArray" access="remote" returntype="Array">
<cfscript>
var data = arrayNew(1);
arrayAppend(data, createObject("component",
"com.mycompany.myapp.model.TestVO").init());
arrayAppend(data, createObject("component",
"com.mycompany.myapp.model.TestVO").init());
</cfscript>
<cfreturn data />
</cffunction>
<cffunction name="getStruct" access="remote" returntype="Struct">
<cfscript>
var data = structNew();
data.firstData = createObject("component",
"com.mycompany.myapp.model.TestVO").init();
data.secondData = createObject("component",
"com.mycompany.myapp.model.TestVO").init();
</cfscript>
<cfreturn data />
</cffunction>
<cffunction name="receiveAndReturnVO" access="remote"
returntype="com.mycompany.myapp.model.TestVO">
<cfargument name="vo" type="com.mycompany.myapp.model.TestVO">
<cfreturn arguments.vo>
</cffunction>
</cfcomponent>
------------------
Flex / Client side
------------------
Save the following value object in {some test
project}/com/mycompany/myapp/model/TestVO.as
package com.mycompany.myapp.model {
[Bindable]
[RemoteClass(alias="com.mycompany.myapp.model.TestVO")]
public class TestVO {
public var someString:String;
public var someNumber:int;
public function TestVO() {
someString = "";
someNumber = 0;
}
}
}
Save the following test application in Flex Builder 2 {some test
project}/TestConnectivity.mxml
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.macromedia.com/2005/mxml"; xmlns="*">
<mx:RemoteObject id="testService"
destination="ColdFusion"
result="onResult(event)"
source="com.mycompany.myapp.service.TestService" />
<mx:Script>
<![CDATA[
import com.mycompany.myapp.model.TestVO;
import mx.controls.Alert;
import mx.rpc.events.ResultEvent;
import mx.utils.ObjectUtil;
private function onResult(event:ResultEvent){
Alert.show(ObjectUtil.toString(event.result));
}
]]>
</mx:Script>
<mx:Button label="getArray" click="testService.getArray()" />
<mx:Button label="getStruct" click="testService.getStruct()" />
<!-- BUGS : display (null) value instead of objects, but objects are
correctly returned... -->
<mx:Button label="receiveAndReturnVO"
click="testService.receiveAndReturnVO(new TestVO())" />
</mx:Application>
Compile and run TestConnectivity.mxml (do not forget to set the compile
argument to take into account your flex/coldfusion service definition,
"flex-enterprise-services.xml")
It should work, if your ColdFusion server is correctly configured with the
Flex/ColdFusion connectivity add-on.
You can also check the adapter logs in
{CFusionMX7}/runtime/logs/coldfusion-out.log, very nice to see if the typed
objects are correctly received or sent by the ColdFusion adapter.
----
BUGS
----
We have faced several bugs with the Flex/ColdFusion connectivity.
1. In the above sample app, getStruct() display (null) object in the Flex
app, but objects are correctly returned... Strange.
2. Sometimes, the AS -> CFC does not map the full type correctly.
Example : the CFC might receive "TestVO" instead of
"com.mycompany.myapp.model.TestVO", so the CFC argument type validation will
fail and you will get an error...
The current workaround is to remove typed object validation in remote
service CFCs.
3. You might have to add UPPERCASE setter functions for CFC -> AS
translation to work correctly.
We don't know yet when it is necessary... But sometimes it does!
Example in TestVO.as :
public function set SOMESTRING(value:String):void {
this.someString = value;
}
public function set SOMENUMBER(someNumber:int):void {
this.someNumber = someNumber;
}
---------------------------
COLDFUSION WITH CAIRNGORM 2
---------------------------
In order to use your service CFCs in a cairngorm application, you just need
to add the RemoteObject definition in your ServiceLocator definition file.
Hope this helps!
Benoit Hediard
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