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Download csv from xml model too slow sapui5.

Hi all,

i have a an xml model created with data coming from back-end through soap.

I serialize the xml response and set to the model as shown below:

var xmlTextPlaning = new XMLSerializer().serializeToString(returnValRegolePlanning);
var xmlPlanning = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + xmlTextPlaning;
window.modelloDatiPlanning = new sap.ui.model.xml.XMLModel();
window.modelloDatiPlanning.setXML(xmlPlanning);

Then i create a table in the xml view as below:

<t:Table
		id="Planning2R"
		selectionMode="MultiToggle"
		showColumnVisibilityMenu="true"
		enableColumnFreeze="true" 
		columnSelect="onColumnSelect"
		>
</t:Table>

Then i bind the columns(from another model) and the rows from my model:

oTablePlan = this.getView().byId('Planning2R');
	    	
	    	oTablePlan.setModel(window.Pla_Model_Colonne, 'colonnePlanning');
	    	oTablePlan.setModel(window.modelloDatiPlanning, 'righePlanning');
	    	
	    	
	    	oTablePlan.bindColumns("colonnePlanning>/columns", function(index, context) {
   	         var sColumnId = context.getObject().fieldname;
   	         var Des =  context.getObject().ddtext;
   	         var isKey = context.getObject().keyflag;
   	         var noDisp = context.getObject().no_display;
			 if (noDisp == 'X'){
	    	        return new sap.ui.table.Column({
	    	            id : "planr2"+sColumnId,
	    	            label: Des, 
	    	            template:new sap.ui.commons.TextView({"text" : {path: "righePlanning>" + sColumnId}}), 
	    	            sortProperty: sColumnId, 
	    	            filterProperty: sColumnId,
	    	            autoResizable: true,
	    	            visible: false
	    	        });
   	        	 
   	        	 
   	         }
   	         
   	         else {
   	        return new sap.ui.table.Column({
   	            id : "planr2"+sColumnId,
   	            label: Des, 
   	            template:new sap.ui.commons.TextView({"text" : {path: "righePlanning>" + sColumnId}}), 
   	            sortProperty: sColumnId, 
   	            filterProperty: sColumnId,
   	            flexible: true,
   	            resizable: true,
   	            autoResizable: true,
   	            width : 'auto',
   	        });
   	     
   	         }


   	    });


	    	oTablePlan.bindRows("righePlanning>/item");
	    		

And until here everything is working fine. i have the table, the data and everything else.I want to download all the data with a download button but when i have thousands of rows the download takes too much or even the broswer doesnt respond anymore. when i have hundred of rows the download works. The issue is related to the xml model i think because with a json model the download is very fast even with hundred thousands of data.

my download function is this:

		downloadCSV: function(){
			
			var currentdate = new Date(); 
		     var anno = currentdate.getFullYear()
		     var mese = currentdate.getMonth()+1
		     var giorno = currentdate.getDate()
		     var minutes = currentdate.getMinutes();
		     var hour = currentdate.getHours();
		     var str = String(giorno+"/"+mese+"/"+anno+"_"+hour+"."+minutes)
		     
			
    	    
    	    jQuery.sap.require("sap.ui.core.util.Export");
    	    jQuery.sap.require("sap.ui.core.util.ExportTypeCSV");


    	    oTablePlan.exportData({
    	        exportType: new sap.ui.core.util.ExportTypeCSV({
    	        		separatorChar: ";"})
    	    })
    	    .saveFile("Regole_Planning_"+str)
    	    .always(function() {
    	        this.destroy();
    	    });


			
		},

Last time it tooked more than 25 minutes to download a file of 15k rows (1,74MB) and my connection have a download speed of 25Mb/s.

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1 Answer

  • Mar 14, 2017 at 09:18 PM

    is there any restriction to go only with XML model instead of JSON?

    try converting XML model to JSON, check the sample JSFiddle code

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