Mapping in XI - cannot access Global Container parameters

[gianluca_tacchella2]

Hi all,

we have the following problem in graphical XI mapping.

Trying to retrieve the run-time value of a global parameter, we cannot access the value itself (e.g. test using "display queue" menu).

We use 2 simple user-defined functions (getIdoc and corresponding setIdoc).

The source code for our custom get/set methods is:

public String getIdoc(Container container){

// This is a CUSTOM global parameter set <- cannot get the value itself

//String codMsgExport = (String) container.getGlobalContainer().getParameter("idoc");

//return codMsgExport.toString();

GlobalContainer globalContainer;

java.util.Map map;

globalContainer = container.getGlobalContainer();

map = globalContainer.getParameters();

// This is a STANDARD global parameter set <- cannot get the value itself, as well

String headerField = (String) map.get(StreamTransformationConstants.INTERFACE_NAMESPACE);

return headerField;

}

public String setIdoc(String codMsgExport,Container container){

container.setParameter("idoc", codMsgExport.toString());

String retValue = (String) container.getGlobalContainer().getParameter("idoc");

return retValue.toString();

}

=> anyway, get method returns only blank values (testing by "display queue" with some custom values...)

It seems as if the parameter is seen, as pointing to a not existing variable - e.g. getParameter("idoczz") - XI runtime returns a NullPointerException.

Some XI server details:

Runtime Environment

Java version: 1.4.2_06

Java vendor: Sun Microsystems Inc.

Version

Service pack: 14

Release: 30_REL

Thanks all!

Gianluca Tacchella

[bhavesh_kantilal]

Hi,

Are you testing the UDF using the TEST tab of your message mapping? if yes, in this case, you would need to add the values for fields (Interface Namespace ) in your TEST under the tab PARAMETERS .

have you done this?

Regards,

Bhavesh

[gianluca_tacchella2]

Hi Sudharshan and Bhavesh,

I forgot to put a value under the tab PARAMETERS (this is the reason for the blank value, thanks:)).

Anyway, modifying (run-time by the set function) the standard runtime constant => leads to a get function with a single value returned (out) for "display queue", despite of test valorization: the initial value set under tab PARAMETERS.

Instead of using the runtime (standard) constant, using my (custom) global variable => leads to NullPointerException ("display queue" for get function) EVEN IF I initialize the variable (e.g. initIdoc() function called once at top-level target message).

********

under JAVA_SECTIONS_TOOLTIP button:

Global Variables

String idoc;

Initialization Section

idoc = "";

Clean-Up Section

idoc = "";

********

public String initIdoc(Container container){

GlobalContainer globalContainer;

globalContainer = container.getGlobalContainer();

// this is the only way NOT to get a NullPointerException

if ( globalContainer.getParameter("idoc") == null )

globalContainer.setParameter("idoc", "a");

return globalContainer.getParameter("idoc").toString();

}

initIdoc:

out (*)

[a]

(*) despite of initialization under JAVA_SECTIONS_TOOLTIP button

********

public void getIdoc(ResultList result,Container container){

//String codMsgExport = (String) container.getGlobalContainer().getParameter("idoc");

//return codMsgExport.toString();

GlobalContainer globalContainer;

java.util.Map map;

globalContainer = container.getGlobalContainer();

map = globalContainer.getParameters();

//String headerField = (String) map.get(StreamTransformationConstants.INTERFACE_NAMESPACE);

// this returns null (out stream)

//String headerField = (String) map.get("idoc");

//if ( globalContainer.getParameter("idoc") == null )

//globalContainer.setParameter("idoc", "");

// this returns NullPointerException

String headerField = globalContainer.getParameter("idoc").toString();

//result.addValue(headerField);

// this returns NullPointerException

//return headerField.toString();

//return globalContainer.getParameter("idoc").toString();

result.addValue(globalContainer.getParameter("idoc").toString());

}

=> leads to NullPointerException

********

public String setIdoc(String codMsgExport,Container container){

GlobalContainer globalContainer;

globalContainer = container.getGlobalContainer();

java.util.Map map;

map = globalContainer.getParameters();

//globalContainer.setParameter(StreamTransformationConstants.INTERFACE_NAMESPACE, codMsgExport.toString());

//container.setParameter("idoc", codMsgExport.toString());

//String retValue = (String) map.put(StreamTransformationConstants.INTERFACE_NAMESPACE, codMsgExport.toString());

// this returns a NullpointerException

//String retValue = (String) map.put("idoc", codMsgExport.toString());

globalContainer.setParameter("idoc", codMsgExport.toString());

//return "True"; // pointer for debug

//return retValue.toString(); // pointer for debug

return globalContainer.getParameter("idoc").toString();

}

setidoc:

in0 out (*)

[1] [1]

[2] [2]

(*) as if this "idoc" parameter is not the globally managed (JAVA_SECTIONS_TOOLTIP button), but one which lives inside the function and not outside for the get function..

********

Regards,

Gianluca

[stefan_grube]

The parameters in global container and the attributes in the java sections are not equal.

You can declare attributes and use them directly without global container:

public String setIdoc(String codMsgExport,Container container){

idoc = codMsgExport;
return(codMsgExport);


}

public void getIdoc(ResultList result,Container container){

result.addValue(idoc);

}

Or you work with global container like this:

public String setIdoc(String codMsgExport,Container container){

container.getGlobalContainer().setParameter("idoc", codMsgExport);
return(codMsgExport);

}

public void getIdoc(ResultList result,Container container){

result.addValue((String)container.getGlobalContainer().getParameter("idoc"));

}

Make sure, that the functions set function is connected in the target at higher level as the get function.

Regards

Stefan

[nitinlpatil12]

Hi Stefan,

Can I use Global Container to store/setParameter the value of a field1 from response of a synchronous interface and use/retrieve the field1 from Global Container getParameter in the next run of a interface.

1. Run1: Request --> Response (store field1 using global container)

2. Run2: Request (get field1 stored in Run1) --> Response

Let me know if it is possible as I tried and it was failing or any other approach is possible to achieve the above scenario.

Regards,

Nitin Patil

[Former Member]

Hi Gianluca,

Make sure that the set parameter part is called first during execution before the get parameter in UDF. Else u might get null pointer exception.

Regards,

Sudharshan