Pass string by reference from subsequence to caller

Hi, I am unable to pass a string parameter by reference from a subsequence to its caller. Is there a trick in doing this or is it not possible?
Thank you,
Chris
Solved!
Go to Solution.

Right Click on the parameter in the subsequence.
Make sure Pass By Reference is checked.
jigg
CTA, CLA
teststandhelp.com
~Will work for kudos and/or BBQ~

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Cannot pass String by reference !

I have the same problem. I understood that if you pass "jxxxarray" or "String" they are passed by reference but I could not make it working. Here are the 2 parts of my code:
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String toto = new String("toto");
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JNIEXPORT jint JNICALL
Java_com_trustedlogic_qa_CBridge_finreadGetFCRAProperties(JNIEnv
*env, jobject obj, jstring FCRAName) {
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Thx in advance,
Eg\\*

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Message was edited by: Manoj Gupta

How do you pass vi references from one event to another

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Attachments:
Load_Directory_of_vi's.vi ‏57 KB

Several problems with your code:
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Is it possible to call a LabVIEW VI by reference from a CIN?

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> I am calling by reference in my LabVIEW program and would like to do
> the same from a CIN, if possible.
>
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There are a couple approaches that are similar that will work. If you
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Hello!
My question is how to pass a String by reference in java.
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StatusEnum result2 = getErrorPointStr(xxx);
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buffer.append("123");
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After calling to getErrorPointStr(String text) function, xxx = "f"
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Tolls wrote:
Which is why I said:
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Thanks Andy.
I still get the error when i am trying to pass the object created from C# to Teststand. I have explained what i am trying to do. Kindly requesting your assitance on this issue.
I have 2 classes in C# (code given below), I am trying to pass the object of "Counter" (c1) class from the "Mainfrm" to teststand. In teststand(counter.seq), I am trying to access the function "GetCount() and SetCount()". I have attached the snapshot of the error that i get from teststand.
Class Counter
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    public int GetCount ()
       return (count);
    public void SetCount(int _count)
       count = _count;
Class Mainfrm : Form
    public Counter c1;
        private void Mainfrm (object sender, EventArgs e)
            InitializeComponent();
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ErrorFromTestStand.JPG ‏28 KB

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navaneeth.j wrote:
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>
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Passing objects by reference in PL/SQL

Hi,
I have come across an unexpected problem using object types in PL/SQL that is causing me some grief. I'm from a Java background and am relatively new to Oracle Objects but what I'm trying to do is fairly trivial, I think. The code below illustrates the problem.
--- cut here ---
CREATE OR REPLACE TYPE test_obj_t AS OBJECT
num INTEGER,
CONSTRUCTOR FUNCTION test_obj_t RETURN SELF AS RESULT
CREATE OR REPLACE TYPE BODY test_obj_t IS
CONSTRUCTOR FUNCTION test_obj_t RETURN SELF AS RESULT IS
BEGIN
num := 0;
RETURN;
END;
END;
CREATE OR REPLACE PACKAGE test_obj_ref AS
PROCEDURE init(o IN test_obj_t);
PROCEDURE inc;
FUNCTION get_num RETURN INTEGER;
END;
CREATE OR REPLACE PACKAGE BODY test_obj_ref IS
obj test_obj_t;
PROCEDURE init(o IN test_obj_t) IS
BEGIN
obj := o;
END;
PROCEDURE inc IS
BEGIN
obj.num := obj.num + 1;
END;
FUNCTION get_num RETURN INTEGER IS
BEGIN
RETURN obj.num;
END;
END;
--- cut here ---
The object type test_obj_t holds a integer and the test_obj_ref package holds a 'reference' to an instance of the object.
To test the above code I run this PL/SQL block:
declare
obj test_obj_t;
begin
obj := test_obj_t;
test_obj_ref.init(obj);
dbms_output.put_line('obj.num='||obj.num);
dbms_output.put_line('test_obj_ref.get_num='||test_obj_ref.get_num);
test_obj_ref.inc;
dbms_output.put_line('obj.num='||obj.num);
dbms_output.put_line('test_obj_ref.get_num='||test_obj_ref.get_num);
test_obj_ref.inc;
dbms_output.put_line('obj.num='||obj.num);
dbms_output.put_line('test_obj_ref.get_num='||test_obj_ref.get_num);
end;
giving the output:
obj.num=0
test_obj_ref.get_num=0
obj.num=0
test_obj_ref.get_num=1
obj.num=0
test_obj_ref.get_num=2
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I suspect that the object is copied in the call to test_obj_ref.init() so I end up with two object instances, one that is held by the test_obj_ref package and one in the anonymous block. Although, I thought that all IN parameters in PL/SQL are passed by reference and not copied!
Am I right?
Is passing objects by reference possible in PL/SQL, if so how?
I'm using Oracle 10.2.0.3.
Cheers,
Andy.

the object being passed to the test_obj_ref.init+ procedure is passed by reference; however, when you assign it to your package variable obj it is being copied to a new instance. you can pass object instances as parameters to procedures using the +IN OUT [NOCOPY]+ *calling mode, in which case modifications to the attributes of the passed object will be reflected in the calling scope's instance variable.
oracle's only other notion of an object reference is the +"REF <object-type>"+ datatype, which holds a reference to an object instance stored in an object table or constructed by an object view.
hope this helps...
gerard

Pass string by reference from subsequence to caller

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