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/*
* $Id: ws.js,v 1.7.2.3 2010/04/06 16:46:12 source Exp $
*
* This file is part of the OpenLink Software Ajax Toolkit (OAT) project.
*
* Copyright (C) 2005-2010 OpenLink Software
*
* See LICENSE file for details.
*/
/*
OAT.WS.invoke(url,callback,service,paramObj)
OAT.WS.listServices(wsdlURL,callback) - callback(servicesArray)
OAT.WS.listParameters(wsdlURL,service,callback) - callback(inputObj,outputObj)
OAT.WS.getEndpoint(wsdlURL,callback) - callback(endpoint)
*/
OAT.WS = {
cache:{},
obj2xml:function(obj) {
var xml = "";
for (var p in obj) {
var name = p;
var value = obj[p];
if (typeof(value) == "object") {
var v = OAT.WS.obj2xml(value);
} else {
var v = value.toString().replace(/&/g,"&").replace(/</g, "<").replace(/>/g, ">");
}
xml += "<"+name+">"+v+"</"+name+">";
}
return xml;
},
invoke:function(url,service,callback,paramObj) { /* execute */
/* build request */
var request = OAT.WS.obj2xml(paramObj);
/* send request */
var cback = function(endpoint) {
var o = {
type:OAT.AJAX.TYPE_XML,
headers:{"SOAPAction":service}
};
OAT.Soap.command(endpoint, request, function(xmlDoc) {OAT.WS.parseResponse(url,xmlDoc,service,callback);},o,true);
}
OAT.WS.getEndpoint(url,cback);
},
getEndpoint:function(url,callback) {
var ref = function(xmlDoc) {
var result = [];
var root = xmlDoc.documentElement;
var service = OAT.Xml.getElementsByLocalName(root,"service")[0];
var port = OAT.Xml.getElementsByLocalName(service,"port")[0];
var addr = OAT.Xml.getElementsByLocalName(port,"address")[0];
var result = addr.getAttribute("location");
callback(result);
}
OAT.WS.retrieveWSDL(url,ref);
},
listServices:function(url,callback) { /* list of available services from wsdl */
var ref = function(xmlDoc) {
var result = [];
var root = xmlDoc.documentElement;
var port = OAT.Xml.getElementsByLocalName(root,"portType");
var ops = OAT.Xml.getElementsByLocalName(port[0],"operation");
for (var i=0;i<ops.length;i++) { result.push(ops[i].getAttribute("name")); }
callback(result);
}
OAT.WS.retrieveWSDL(url,ref);
},
listParameters:function(url,service,callback) { /* list of input & output parameters for service */
var ref = function(xmlDoc) {
/* init */
var params_in = {};
var params_out = {};
var opnames = [];
var msgnames = [];
/* find proper port */
var root = xmlDoc.documentElement;
var port = OAT.Xml.getElementsByLocalName(root,"portType");
var ops = OAT.Xml.getElementsByLocalName(port[0],"operation");
for (var i=0;i<ops.length;i++) { opnames.push(ops[i].getAttribute("name")); }
var index = opnames.indexOf(service);
if (index == -1) { return; } /* service does not exist */
/* get input & output message names */
var input = OAT.Xml.getElementsByLocalName(ops[index],"input")[0];
var output = OAT.Xml.getElementsByLocalName(ops[index],"output")[0];
var inmsg = input.getAttribute("message").split(":").pop(); /* last part after colon */
var outmsg = output.getAttribute("message").split(":").pop(); /* last part after colon */
/* message nodes */
var messages = OAT.Xml.getElementsByLocalName(root,"message");
for (var i=0;i<messages.length;i++) { msgnames.push(messages[i].getAttribute("name")); }
index = msgnames.indexOf(inmsg);
var inmessage = messages[index];
index = msgnames.indexOf(outmsg);
var outmessage = messages[index];
/* message parts */
var params_in = OAT.WS.analyzeType(root,inmessage);
var params_out = OAT.WS.analyzeType(root,outmessage);
/* done */
callback(params_in,params_out);
}
OAT.WS.retrieveWSDL(url,ref);
},
parseResponse:function(url,xmlDoc,service,callback) { /* parse response from wsdl-compliant ws */
var parseObject = function(obj,node) {
if (typeof(obj) == "object") {
if (obj instanceof Array) {
var a = [];
var elms = OAT.Xml.childElements(node);
for (var i=0;i<elms.length;i++) {
var oneValue = parseObject(obj[0],elms[i])
a.push(oneValue);
}
return a;
} else {
var o = {};
for (var p in obj) {
var elm = OAT.Xml.getElementsByLocalName(node,p)[0];
if (elm) { o[p] = parseObject(obj[p],elm); }
}
return o;
}
} else {
return OAT.Xml.textValue(node);
}
}
var root = xmlDoc.documentElement;
var obj = {};
var ref = function(inp,outp) {
/* parse response xml according to appropriate output parameters definition */
for (var p in outp) {
var elm = OAT.Xml.getElementsByLocalName(root,p)[0];
obj[p] = parseObject(outp[p],elm);
} /* for all expected returned nodes */
callback(obj);
}
OAT.WS.listParameters(url,service,ref);
},
analyzeType:function(root,messageNode) {
var schemas = OAT.Xml.getElementsByLocalName(root,"schema");
var result = {};
var tmp = {};
var parts = OAT.Xml.getElementsByLocalName(messageNode,"part");
var numElems = 0;
for (var i=0;i<parts.length;i++) {
var elm = parts[i];
if (elm.getAttribute("type")) {
/* type */
var t = elm.getAttribute("type").split(":").pop();
tmp[elm.getAttribute("name")] = OAT.Schema.getType(schemas,t);
} else {
/* element */
numElems++;
var ename = elm.getAttribute("element").split(":").pop();
tmp[ename] = OAT.Schema.getElement(schemas,ename);
}
}
if (numElems > 0) { result = tmp; } else {
result[messageNode.getAttribute("name")] = tmp;
}
return result;
},
retrieveWSDL:function(url,callback) { /* internal routine to retrieve wsdl; either from url or cache */
if (url in OAT.WS.cache) {
callback(OAT.WS.cache[url]);
} else {
var ref = function(xmlDoc) {
OAT.WS.cache[url] = xmlDoc;
callback(xmlDoc);
}
OAT.AJAX.GET(url,'',ref,{type:OAT.AJAX.TYPE_XML});
}
}
}
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