Custom ejb function

Question

Hi expert,
I need to complete this code in my custum ejb function:
public DataObject invokeSdo(DataObject input, InvocationContext invocationContext) {
          // check sourceDO
          if (input == null) {
               throw new IllegalArgumentException("SourceDO must exist");
          if (invocationContext == null) {
               throw new IllegalArgumentException("HelperContext must exist");
          // input
          Type typeInput = input.getType();
          String parametro = input.getString(typeInput.getProperty(NAME_PROPERTY_INPUT_ARG1));
          // output      
          String item1="string1";
          String item2="string2";
                String item3="string3";
          DataObject outputDO = invocationContext.createOutputDataObject();
               HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
                    code to add strings item1, item2 , item3 to outputDO
          return outputDO;
In the function's signature result must be a string whith option "Multiple Occurrences" ???????

Answer 1

Hi Martin,
I try your code, this is my ejb function :
public class UtentiejbBean implements UtentiejbLocal {
     private static final String NAMESPACE_FUNCTION = "demo.sap.com/luca";
     private static final String NAME_PROPERTY_INPUT_ARG1 = SdoRenamingHelper
               .renameXsdElementToSdoProperty(
                         new QName(NAMESPACE_FUNCTION, "arg1"), false);
     private static final String NAME_PROPERTY_OUTPUT_RESULT = SdoRenamingHelper
               .renameXsdElementToSdoProperty(new QName(NAMESPACE_FUNCTION,
                         "result"), false);
     public DataObject invokeSdo(DataObject input, InvocationContext invocationContext) {
          // check sourceDO
          if (input == null) {
               throw new IllegalArgumentException("SourceDO must exist");
          if (invocationContext == null) {
               throw new IllegalArgumentException("HelperContext must exist");
          // input
          Type typeInput = input.getType();
          String parametro = input.getString(typeInput.getProperty(NAME_PROPERTY_INPUT_ARG1));
          // output
          List<String> listOfStrings =new ArrayList<String>();
          listOfStrings.add("string1");
          listOfStrings.add("string2");
          DataObject responseObject = invocationContext.createOutputDataObject();
          // prepare an array for your response
          List<DataObject> resultList = new ArrayList<DataObject>();
          // get the type definition (sdo property) of your result
          Property myResultProperty = responseObject.getType().getProperty(NAME_PROPERTY_OUTPUT_RESULT) ;
          for (String yourString : listOfStrings) {
               // create a data object
               DataObject resultDO = responseObject.createDataObject(myResultProperty);
               // now set the string as value for your DO and do some other fancy stuff
               resultDO.setString(resultDO.getType().getProperty(NAME_PROPERTY_OUTPUT_RESULT), yourString);
               // finally add the element to your result list
               resultList.add(resultDO);
          // 4. Liste der Ergebnisse zurückgeben
          responseObject.setList(myResultProperty, resultList);
          return responseObject;     
Then I defined the function :
name: utenti
namaspace: demo.sap.com/luca
return type: string - http://www.w3.org/2001/XMLSchema (with multiple occurrences set)
parameter name: arg1
parameter type: string - http://www.w3.org/2001/XMLSchema
finally i defined a variabile (with expression utenti("arg1") ), in the tab user texts of a task, and i used it in the description field.
But unfortunatelly my process failed.