Friday, November 6, 2020

Ismail getting started

Ismail is working on a problem in OpenUI5 front end: The menu items don’t work, they display correctly, but when you click on one of them, nothing happens. And the JS console says:

Uncaught DOMException: String contains an invalid character

He found that the problem is somewhere in file config/openui5/controller/App.controller.js:

handleMenuItemPress: function (oEvent) {
    var oButton = oEvent.getSource();
    var actor_id = oButton.data('actor_id');
    var action_name = oButton.data('action_name');
    var compressed_eval_js = oButton.data('eval_js');
    var s = atob(compressed_eval_js);
    var data = new Array(s.length);
    var i;
    for (i = 0; i < s.length; ++i) {
        data[i] = s.charCodeAt(i);
    }

    var inflate = new Zlib.Inflate(data);
    var decompress = inflate.decompress();
    var eval_js = new TextDecoder("utf-8").decode(decompress);

    var msg = "'" + oEvent.getParameter("item").getText() + actor_id + ":" + action_name + "' pressed";
    MessageToast.show(msg);
    eval(eval_js);
    // this.routeTo(action_name, actor_id);

Two remarks:

• In order to understand the problem, you need to see what’s in the compressed_eval_js variable.

• The error message “Uncaught DOMException: String contains an invalid character” also comes when you open a table using a quick link (where it works). So this might not be the real problem at all.

Change in generated XML file

I am upgrading the IMP2PAIN.XML file used by a TIM customer from version 2 to version 3 because they want to use a new feature: instant payments without additional costs.

I upgraded the XSD file used by etgen.sepa.validate, then started a testing sequence: print a payment order in TIM to generate an xml file from the updated IMP2PAIN.XML file, then validate that xml file.

First error: The root element is no longer named <pain.001.001.02> (nor <pain.001.001.03> as I had expected), but <CstmrCdtTrfInitn>.

Next error:

lxml.etree.DocumentInvalid: Element '{urn:iso:std:iso:20022:tech:xsd:pain.001.001.03}Grpg': This element is not expected. Expected is one of ( {urn:iso:std:iso:20022:tech:xsd:pain.001.001.03}CtrlSum, {urn:iso:std:iso:20022:tech:xsd:pain.001.001.03}InitgPty )., line 8

Yes, version 2 had the following fragment:

<NbOfTxs>...</NbOfTxs>
<Grpg>MIXD</Grpg>
<InitgPty>
...

Indeed the docs no longer talk about <Grpg>. What did it mean? Maybe it was about how to share the bank costs. Which is now done using <ChrgBr>. But I am not sure. And anyway the <ChrgBr> element is not mandatory and seems to have reasonable default values. So I removed the <Grpg> element.

Next error:

<Id><OrgId><PrtryId>
    <Id>[=strtran(substr(MemNoTva,4),".","")]</Id>
    <Issr>KBO-BCE</Issr>
</PrtryId></OrgId></Id>

I guess that <PrtryId> has been renamed to <Othr>. Occurred twice in the source file.

Next problem:

lxml.etree.DocumentInvalid: Element ‘{urn:iso:std:iso:20022:tech:xsd:pain.001.001.03}Ctry’: This element is not expected., line 35

Seems that <Ctry> must now come before <AdrLine> in <PstlAdr>.