Ryan,
I just wrote this laszlo class, it's based on Laslzo's ajax.lzx class.
It uses flash's XML.sendAndLoad to post raw xml to the backend in SOLO
mode.
This class is more of a Laszlo to XML bridge, but so far it's working
great with a few bugs.
This may give you a starting point.
-Daniel
Ryan Nowakowski wrote:
I have a flash application that I'm migrating to OL. It currently uses
flash's XMLSocket to keep a persistent connection to our server. Then
our flash app and server communicate via a custom protocol on that
connection. How do I replicate that functionality in OL?
<canvas debug="true" proxied="false" height="400">
<include href="./xmlhttprequest.lzx"/>
<XMLRequest name="remote" />
<view id="data">
<method event="oninit">
<![CDATA[
var username_txt = 'test';
var password_txt = 'pass';
var login_str = "<lad><login username=\""+username_txt+"\"
password=\""+password_txt+"\" /></lad>";
remote.open('http://10.254.254.110/services/v2/progressive/loader/');
remote.send(login_str);
Debug.write('Status Code' + remote.getStatusCode());
]]>
</method>
</view>
</canvas>
<?xml version="1.0" encoding="UTF-8"?>
<library>
<!-- Implements SOLO XMLHttpRequest using XML.sendAndLoad
based on lps/components/rpc/ajax.lzx
-->
<class name="XMLRequest" extends="node">
<!-- Remote server http://localhost/services/controller/action/ -->
<attribute name="server" value="null" type="string" />
<!-- XML we want to post the server, string or Laszlo DataSet -->
<attribute name="content" value="null" />
<!-- An XML object created with the XML constructor from Flash ActionScript
This will be used to store the RAW XML data we want to POST
to the server
-->
<!-- @keywords private -->
<attribute name="contentStore" value="null" />
<!-- Action Script object to store XML response from server -->
<!-- @keywords private -->
<attribute name="responseStore" value="null" />
<!-- Canvas level Laszlo dataset name -->
<!-- Used when converting from AS object to Laszlo dataset -->
<attribute name="datasetName" value="dsxmlRequest" type="string" />
<!--- @keywords private -->
<attribute name="dataset" value="null" />
<!--- statusCode Numeric code returned XML ActionScript, 0,1,2,3,4,5,6,7,8,9,10,11,12 -->
<attribute name="statusCode" value="null" type="number" />
<!--- statusMessage String message of statusCode -->
<attribute name="statusMessage" value="null" type="string" />
<!-- Bytes loaded from server -->
<attribute name="bytesLoaded" value="null" type="number" />
<!-- Total Bytes loaded from Server -->
<attribute name="totalBytesLoaded" value="null" type="number" />
<!-- Discards text nodes that contain only white space -->
<attribute name="ignoreWhiteSpace" value="true" type="string" />
<event name="onstatusCode"/>
<event name="onbytesLoaded"/>
<method event="oninit">
<![CDATA[
if(this.dataset == null)
{
this.dataset = new LzDataset(canvas,{name:this.datasetName});
}
else
{
this.dataset = new LzDataset(this);
}
if(this.contentStore == null)
{
this.contentStore = new XML();
}
if(this.responseStore == null)
{
this.responseStore = new XML();
}
Debug.write('Start');
]]>
</method>
<method name="setStatusCode" args="code">
<![CDATA[
Debug.write('Start set StatusCode' + code);
if(!isinited)
{
this.statusCode = code;
return;
}
if(this.statusCode == code)
{
return;
}
switch(code)
{
case 0 :
this.statusCode = 0;
this.statusMessage = 'No error; parse was completed successfully.';
break;
case 2 :
this.statusCode = 2;
this.statusMessage = 'A CDATA section was not properly terminated.';
break;
case 3 :
this.statusCode = 3;
this.statusMessage = 'The XML declaration was not properly terminated.';
break;
case 4 :
this.statusCode = 4;
this.statusMessage = 'The DOCTYPE declaration was not properly terminated.';
break;
case 5 :
this.statusCode = 5;
this.statusMessage = 'A comment was not properly terminated.';
break;
case 6 :
this.statusCode = 6;
this.statusMessage = 'An XML element was malformed.';
break;
case 7 :
this.statusCode = 7;
this.statusMessage = 'Out of memory.';
break;
case 8 :
this.statusCode = 8;
this.statusMessage = 'An attribute value was not properly terminated.';
break;
case 9 :
this.statusCode = 9;
this.statusMessage = 'A start tag was not matched with an end tag.';
break;
case 10 :
this.statusCode = 10;
this.statusMessage = 'An end tag was encountered without a matching start tag.';
break;
case 11 :
this.statusCode = 11;
this.statusMessage = 'Missing URL';
break;
default :
this.statusCode(1);
this.statusMessage = 'An unknown error has occurred.';
Debug.write('Set Status Switch default');
break;
}
if(onstatusCode)
{
onstatusCode.sendEvent();
}
]]>
</method>
<method name="setBytesLoaded" args="bytes">
<![CDATA[
if(!isinited)
{
this.bytesLoaded = bytes;
return;
}
if(this.bytesLoaded == bytes)
{
return;
}
this.bytesLoaded = bytes;
if(onbytesLoaded)
{
onbytesLoaded.sendEvent();
}
]]>
</method>
<method name="getStatusCode">
return this.statusCode;
</method>
<method name="getStatusMessage">
return this.statusMessage;
</method>
<method name="getTotalBytesLoaded">
return this.totalBytesLoaded;
</method>
<method name="destroy">
this.dataset.destroy();
</method>
<method name="open" args="url">
<![CDATA[
if(url == null)
{
this.setStatusCode(11);
return;
}
this.server = url;
this.setStatusCode(0);
]]>
</method>
<method name="send" args="content">
<![CDATA[
if(content != null)
{
if(typeof(content) == 'string')
{
this.contentStore.parseXML(content);
}
else
{
this.contentStore.parseXML(content.serialize());
}
this.setStatusCode(this.contentStore.status);
if(this.getStatusCode() == 0)
{
// Hack to have access to the parent class from within the XML class instance
this.responseStore["response"] = this;
this.responseStore.ignoreWhite = this.ignoreWhiteSpace;
this.responseStore.onLoad = responseLoader
contentStore.sendAndLoad(this.server,this.responseStore);
}
}
]]>
</method>
<method name="responseLoader" args="success">
<![CDATA[
if(success)
{
this.response.setStatusCode(this.response.responseStore.status);
var dp = this.response.dataset.getPointer();
var element = LzDataNode.stringToLzData(this.response.responseStore.toString());
dp.p.appendChild(element);
}
else
{
this.response.setStatusCode(this.response.responseStore.status);
}
]]>
</method>
</class>
</library>
