[LMS-1191] fixed cifex extractor

SVN: 12865

datastore_server/source/java/ch/systemsx/cisd/etlserver/cifex/CifexDataSetInfoExtractor.java

@@ -79,6 +79,7 @@ public class CifexDataSetInfoExtractor implements IDataSetInfoExtractor
         {
             ExperimentIdentifier experimentIdentifier =
                     new ExperimentIdentifierFactory(info.getExperiment()).createIdentifier();
+            dataSetInformation.setExperimentIdentifier(experimentIdentifier);
             dataSetInformation.setGroupCode(experimentIdentifier.getGroupCode());
             dataSetInformation.setParentDataSetCodes(Arrays.asList(info.getParents()));
         }

datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/shared/dto/DataSetInformation.java

@@ -168,6 +168,8 @@ public class DataSetInformation implements Serializable
      * Returns the basic information about the experiment.
      */
     // TODO 2009-09-18 Tomasz Pylak: change to getExperiment()
+    // But it can be null when we use e.g. CifexDataSetInfoExtractor - only identifier is set.
+    // This bean is too complex and can be easily misused...
     public Experiment tryToGetExperiment()
     {
         return experiment == null ? (sample == null ? null : sample.getExperiment()) : experiment;