Debugging Deserialization Errors Between AIR and BlazeDS on ColdFusion using ORM

Question

Now that I am using CF + ORM for most of my Flex and AIR projects, I've had a much more difficult time with the deserialization of objects from AS to CF. The errors thrown by BlazeDS are not helpful at all, and not indicative of the true issue. cfgatewayadapter.jar is a closed source, and make it even more difficult, because it is the culprit in these issues. These issues can sometimes take a full day or two to resolve because the only way I've seen to debug is to start removing code line by line until the thing works. Huge waste of time.
The problem stems from the fact that during deserlization CF barfs when something doesnt match. Instead of throwing a useful error, it proclaims the CFC doesnt exist serverside. The developer then has to go through each componenty property-by-property to try to determine where the problem is.
What we need is something more specific to what the actual problem is. I've not found an adequate way to debug this, and it's causing me to seriously considering changing the backend to Groovy + Granite so I can get the control I need. Really, Adobe just needs to open up the source on cfgatewayadapter or put some time into refining it so that it throws accurate errors.
Examing the error below, one would think that the CFC does not exist. However, if you run the same examples from CFML and pass it an instance of StreamProvider it works fine.
[BlazeDS]Error deserializing client message.
coldfusion.runtime.CfJspPage$NoSuchTemplateException: Could not find the ColdFusion component or interface StreamProvider.
        at coldfusion.flash.messaging.io.ColdFusionPropertyProxy.createInvokable(ColdFusionPropertyP roxy.java:132)
        at coldfusion.flash.messaging.io.ColdFusionPropertyProxy.createInstance(ColdFusionPropertyPr oxy.java:93)
        at coldfusion.flash.messaging.io.amf.CFAMF3Input.cfreadScriptObject(CFAMF3Input.java:524)
        at coldfusion.flash.messaging.io.amf.CFAMF3Input.readScriptObject(CFAMF3Input.java:250)
        at coldfusion.flash.messaging.io.amf.CFAMF3Input.cfreadObjectValue(CFAMF3Input.java:138)
        at coldfusion.flash.messaging.io.amf.CFAMF3Input.cfreadObject(CFAMF3Input.java:88)
        at coldfusion.flash.messaging.io.amf.CFAMF3Input.cfreadJavaArray(CFAMF3Input.java:748)
        at coldfusion.flash.messaging.io.amf.CFAMF3Input.cfreadBodyAsJavaArray(CFAMF3Input.java:110)
        at coldfusion.flash.messaging.io.amf.CFAMF3Input.cfreadBodyAsJavaArray(CFAMF3Input.java:102)
        at coldfusion.flash.messaging.io.amf.CFAMF3Input.readScriptObjectInternal(CFAMF3Input.java:3 95)
        at coldfusion.flash.messaging.io.amf.CFAMF3Input.readScriptObject(CFAMF3Input.java:246)
        at flex.messaging.io.amf.Amf3Input.readObjectValue(Amf3Input.java:152)
        at flex.messaging.io.amf.Amf3Input.readObject(Amf3Input.java:130)
        at flex.messaging.io.amf.Amf0Input.readObjectValue(Amf0Input.java:123)
        at flex.messaging.io.amf.Amf0Input.readArrayValue(Amf0Input.java:359)
        at flex.messaging.io.amf.Amf0Input.readObjectValue(Amf0Input.java:127)
        at flex.messaging.io.amf.Amf0Input.readObject(Amf0Input.java:94)
        at flex.messaging.io.amf.AmfMessageDeserializer.readObject(AmfMessageDeserializer.java:227)
        at flex.messaging.io.amf.AmfMessageDeserializer.readBody(AmfMessageDeserializer.java:206)
        at flex.messaging.io.amf.AmfMessageDeserializer.readMessage(AmfMessageDeserializer.java:126)
        at flex.messaging.endpoints.amf.SerializationFilter.invoke(SerializationFilter.java:145)
        at flex.messaging.endpoints.BaseHTTPEndpoint.service(BaseHTTPEndpoint.java:291)
        at coldfusion.flash.messaging.CFAMFEndPoint.service(CFAMFEndPoint.java:295)
        at flex.messaging.MessageBrokerServlet.service(MessageBrokerServlet.java:353)
        at coldfusion.flex.ColdFusionMessageBrokerServlet.service(ColdFusionMessageBrokerServlet.jav a:114)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89)
        at jrun.servlet.FilterChain.doFilter(FilterChain.java:86)
        at coldfusion.filter.FlashRequestControlFilter.doFilter(FlashRequestControlFilter.java:71)
        at coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)
        at jrun.servlet.FilterChain.doFilter(FilterChain.java:94)
        at jrun.servlet.FilterChain.service(FilterChain.java:101)
        at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)
        at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
        at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)
        at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)
        at jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)
        at jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)
        at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)
        at jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)
        at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)
[BlazeDS]Deserializing AMF/HTTP request
Version: 3
  (Message #0 targetURI=null, responseURI=/3)
    (Array #0)
      [0] = (Typed Object #0 'flex.messaging.messages.RemotingMessage')
        source = "com.mediaslurp.remoting.ProviderServiceProxy"
        operation = "savePendingProvider"
        timeToLive = 0
        body = (Array #1)
          [0] =
[BlazeDS]Serializing AMF/HTTP response
Version: 3
  (Message #0 targetURI=/3/onStatus, responseURI=)
    (Typed Object #0 'flex.messaging.messages.ErrorMessage')
      headers = (Object #1)
      rootCause = (Typed Object #2 'coldfusion.runtime.CfJspPage$NoSuchTemplateException')
        rootCause = null
        message = "Could not find the ColdFusion component or interface StreamProvider."
        localizedMessage = "Could not find the ColdFusion component or interface StreamProvider."
        detail = "Ensure that the name is correct and that the component or interface exists."
        cause = null
        missingFileName = "StreamProvider"
        type = "Application"
      body = null
      correlationId = null
      faultDetail = null
      faultString = "Error deserializing client message."
      clientId = null
      timeToLive = 0.0
      destination = null
      timestamp = 1.295530026739E12
      extendedData = null
      faultCode = "Client.Packet.Encoding"
      messageId = "6C6E6657-430C-12E6-8B58-E33F7A6D59DC"

Answer 1

does MySQL work by itself? did you try connecting to your
databases with
phpMyAdmin or alike?
also, make sure you do not have several
mysql-connector-xxxxxx.***.bin
(whatever their names are, you know, the jdbc driver files)
of different
versions - make sure there is only ONE, preferably the latest
one,
anywhere on your server. remove any other ones.
if i remember correctly, the exception you get in the error
is usually
caused by incorrect/old mysql connector drivers...
Azadi Saryev
Sabai-dee.com
Vientiane, Laos
http://www.sabai-dee.com