Android Question create datatable to be passed to a webservice expecting a .net datatable

kevin rowe · Thursday at 6:04 PM

I have a b4a app that is currently passing parameters directly to the back end SQL parser (for generic queries) to update data that is displayed as a table.
I inherited this design.
The app is a clone of a web app that passes the whole screen table back as a .net datatable to a service call expecting a .net datatable, but this version passes each line back in turn to a the SQL service call.
I have to change the functionality, to add an extra a bit of data to the screen table that would create a lot of work front end, or I can call the dataset expecting service call.

Is it possible to generate a .net datatable in b4a that can be exported to the webservice call to slot into the xml for the service call?
I can't find any references to libraries that provide datatable or anything like it.

<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
<soap12:Header>
<security stuff>
</soap12:Header>
<soap12:Body>
<servicecallname xmlns="http://oursite.co.uk/">
<DT>datatable export xml here</DT>
<other field1>string</other field1>
<other field2>string</other field2>
<other field3>string</other field3>
</servicecallname>
</soap12:Body>
</soap12:Envelope>

aeric · Friday at 3:46 AM

I am not clear what is your question.
If you want to show a table in B4A, use B4XTable.
If you want to export this data to another format, there are many examples on this forum.

https://www.b4x.com/android/forum/threads/b4x-b4xtable-export-to-json.115078/

https://www.b4x.com/android/forum/pages/results/?query=export+b4xtable

kevin rowe · Friday at 9:14 AM

Sorry for the confusion.

I need specifically to be able to export the data in an SQLLite cursor (or ResultSet) in a form identical to the export from a .NET DataSet into a string.
This string data will be inserted into another xml string that is passed to a webservice expecting a DataSet as xml as one of the parameters.

kevin rowe · Friday at 3:26 PM

I have tried to use the Map2Xml class to convert the map created by DBUtils.ExecuteJSON to xml but i get a dom exception. I looked at the Map2Xml example but it does not appear materially different.
Do I need to load a schema into the Map2Xml using the Class_Globals property? If so, how?

map2xml:

    ls_sql = "SELECT ..."
    Dim ls_fields As List = Array(DBUtils.DB_INTEGER, DBUtils.DB_INTEGER, .. etc )      
    Dim lsxml As String
    Dim ls_args() As String = Null
    Dim li_limit As Int = 10000
    Dim gen As JSONGenerator  
    Dim m As Map
    Dim mtx As Map2Xml

    m = DBUtils.ExecuteJSON(SQL1, ls_sql, ls_args, li_limit, ls_fields)
    gen.Initialize(m)
    mtx.Initialize()
    lsxml = mtx.MapToXml(m)  ' crashes here

This crashes with error message

Error occurred on line: 52 (Map2Xml)
org.w3c.dom.DOMException: 890090
at org.apache.harmony.xml.dom.NodeImpl.setName(NodeImpl.java:286)
at org.apache.harmony.xml.dom.ElementImpl.<init>(ElementImpl.java:56)
at org.apache.harmony.xml.dom.DocumentImpl.createElement(DocumentImpl.java:343)
at org.apache.harmony.xml.dom.DocumentImpl.createElement(DocumentImpl.java:48)
at com.jamesmurty.utils.XMLBuilder.element2(XMLBuilder.java:477)
at com.jamesmurty.utils.XMLBuilder.element(XMLBuilder.java:420)
at Merit.FMSPortal.map2xml._handleelement(map2xml.java:96)
at Merit.FMSPortal.map2xml._handlemapelement(map2xml.java:166)
at Merit.FMSPortal.map2xml._handleelement(map2xml.java:81)
at Merit.FMSPortal.map2xml._handlelistelement(map2xml.java:192)
at Merit.FMSPortal.map2xml._handleelement(map2xml.java:92)
at Merit.FMSPortal.map2xml._maptoxml(map2xml.java:234)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:351)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:157)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:205)
at anywheresoftware.b4a.debug.Debug.delegate(Debug.java:262)

Does anyone know what the issue is?

aeric · 2024-12-21T16:35:31+0000

I think the map output from DBUtils.ExecuteJSON cannot directly use by Map2Xml.

Alex_197 · 2024-12-21T17:44:35+0000

kevin rowe said:
Sorry for the confusion.

I need specifically to be able to export the data in an SQLLite cursor (or ResultSet) in a form identical to the export from a .NET DataSet into a string.
This string data will be inserted into another xml string that is passed to a webservice expecting a DataSet as xml as one of the parameters.

Create a line like this

B4X:

FieldName1_FieldName2~Field1FirstRowData_Field2FirstRowData~

and send this line to your server and then parse it

Android Question create datatable to be passed to a webservice expecting a .net datatable

kevin rowe

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aeric

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kevin rowe

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kevin rowe

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aeric

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Android Question create datatable to be passed to a webservice expecting a .net datatable

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