Cannot invoke %SYSTEM.OBJ.LoadStream() by IRIS.ClassMethodStatusCode

Question

Question

Stefan Rieger · Feb 28, 2020

trying importing classDefinition to Iris via LoadStream() fails with
zLoadStream+1^%SYSTEM.OBJ.1 ----> InterSystems.Data.IRISClient.IRISException : Exception thrown on server (code = 1192)...

Code is here; use any valid exported ClassDefinition as File to test that:

    public static void loadClassFromStream(this IRIS iris, string txt)
    {

        // IRISObject globalCharStr = IrisStreamExtensions.FromTxt(iris, text);
        var fp = @"C:\tmp\TestClass.xml";
        txt = File.ReadAllText(fp);

        var stream = new MemoryStream();
        var bytes = Encoding.Default.GetBytes(txt);
        stream.Write(bytes, 0, bytes.Length);
        stream.Flush();
        stream.Position = 0;

        var qspec = "/display=none /compile=0 /recursive=0 /relatedclasses=0 /subclasses=0";
        var errorlog = "";
        var loadedItems = "";

        var parameter = new object[]
        {
            stream, 
            qspec,  
            errorlog,
            loadedItems
        };

        try
        {
            iris.ClassMethodStatusCode("%SYSTEM.OBJ", "LoadStream", parameter);
        }
        catch (Exception e)
        {
            throw new IrisException("%SYSTEM.OBJ", "LoadStream", e);
        }            

    }

Discussion (6)2

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Eduard Lebedyuk · Feb 28, 2020

I'd recommend:

Write LoadStream method with the same signature which logs all passed arguments.
Call it from .Net
Check what's actually gets passed inside.

0 0

score 0 · Answer 1 · 2020-02-28T08:01:00-05:00

Use byte[] to pass streams. So:

byte[] bytes = Encoding.Default.GetBytes(txt);
...
var parameter = new object[]
        {
            bytes,
            qspec,  
            errorlog,
            loadedItems
        };

score 0 · Answer 2 · 2020-02-28T08:35:52-05:00

unfortunately results with same error: zLoadStream+1^%SYSTEM.OBJ.1....
as far as i can see it's thrown at InterSystems.Data.IRISClient.InStream.readHeaderSYSIO(Int64 msgid, List`1 allowedErrors)

Any Ideas?

score 0 · Answer 3 · 2020-02-28T12:17:02-05:00

good idea; i can see the point now: As %SYSTEM.OBJ.LoadStream() Method checks if Parameter <stream.IsCharacter> it fails as the parameter is passed as "No-Object".
With 2019 libs i had the opportunity to pass in native CacheObjects - that's not possible with this architecture and IRISObjects?

score 0 · Answer 4 · 2026-01-16T09:25:14-05:00

byte[] content = (binary content of exported xml file)
string flags = "/compile=1"

var iris = IRIS.CreateIRIS(cn);
string text = System.Text.Encoding.UTF8.GetString(content);
IRISObject stream = (IRISObject)iris.ClassMethodObject("%Stream.GlobalCharacter", "%New");
stream.InvokeVoid("Write", content);

iris.ClassMethodStatusCode("%SYSTEM.OBJ", "LoadStream", stream, flags, errorlog);

score 0 · Answer 5 · 2026-01-16T09:29:12-05:00

Sorry, las reply was wrong
stream.InvokeVoid("Write", text)

byte[] content = (binary content of exported xml file)
string flags = "/compile=1"

var iris = IRIS.CreateIRIS(cn);
string text = System.Text.Encoding.UTF8.GetString(content);
IRISObject stream = (IRISObject)iris.ClassMethodObject("%Stream.GlobalCharacter", "%New");
stream.InvokeVoid("Write", text);

iris.ClassMethodStatusCode("%SYSTEM.OBJ", "LoadStream", stream, flags, errorlog);