[kepler-dev] [Bug 2350] New: - Add null token to eml datasource

[bugzilla-daemon@ecoinformatics.org]

http://bugzilla.ecoinformatics.org/show_bug.cgi?id=2350

           Summary: Add null token to eml datasource
           Product: Kepler
           Version: 1.0.0beta2
          Platform: Other
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: data access
        AssignedTo: tao at nceas.ucsb.edu
        ReportedBy: tao at nceas.ucsb.edu
         QAContact: kepler-dev at ecoinformatics.org


Ptolemy now has null token. we need assign it when eml actor meets missing value.