@staticmethod
    def exportMashup(filename, vtcontroller, mashuptrail, mashupversion, etype):
        result = False
        if vtcontroller is not None and mashuptrail is not None:
            locator = vtcontroller.locator
            version = mashuptrail.vtVersion
            
            node = ElementTree.Element('vtlink')
        
            if isinstance(locator, DBLocator):
                node.set('host', str(locator.host))
                node.set('port', str(locator.port))
                node.set('database', str(locator.db))
                node.set('vtid', str(locator.obj_id))
            else:
                node.set('filename', str(locator.name))
                
            node.set('version', str(version))    
            node.set('execute', "True")
            node.set('forceDB', "False")
            node.set('showSpreadsheetOnly', "True")
            node.set('mashuptrail', str(mashuptrail.id))
            node.set('mashupVersion', str(mashupversion))
                
            if etype in [0,1]:
                if etype == 1: #minimal
                    pip = vtcontroller.vistrail.getPipeline(version)
                    vistrail = Vistrail()
                    id_remap = {}
                    action = vistrails.core.db.action.create_paste_action(pip, 
                                                        vistrail.idScope,
                                                        id_remap)
                    vistrail.add_action(action, 0L, 0)
                   
                    tag = vtcontroller.vistrail.get_tag(version)
                    if tag is None:
                        tag = "Imported workflow"
                    vistrail.addTag(tag, action.id)
                    node.set('version', str(action.id))
                    id_scope = IdScope(1L)
                    newmashuptrail = Mashuptrail(
                                     MashupsManager.getNewMashuptrailId(), 
                                     action.id, 
                                     id_scope)
                    
                    maction = mashuptrail.actionMap[mashupversion]
                    mtag = mashuptrail.getTagForActionId(mashupversion)
                    newmashup = copy.copy(maction.mashup)
                    newmashup.remapPipelineObjects(id_remap)
                    currVersion = newmashuptrail.addVersion(
                                            newmashuptrail.getLatestVersion(),
                                            newmashup, maction.user, 
                                            maction.date)
                    newmashuptrail.currentVersion = currVersion
                    newmashuptrail.changeTag(currVersion, mtag, maction.user,
                                             maction.date)
                    newvtcontroller = BaseVistrailController(vistrail, None)
                    MashupsManager.addMashuptrailtoVistrailController(newvtcontroller,
                                                                      newmashuptrail)
                    node.set('mashuptrail', str(newmashuptrail.id))
                    node.set('mashupVersion', str(newmashuptrail.currentVersion))
                else:
                    vistrail = vtcontroller.vistrail
                    newvtcontroller = MashupsManager.copyBaseVistrailController(vtcontroller)
                
                #create temporary file
                (fd, name) = tempfile.mkstemp(prefix='vt_tmp',
                                          suffix='.vt')
                os.close(fd)
                try:
                    fileLocator = FileLocator(name)
                    newvtcontroller.write_vistrail(fileLocator)
                    contents = open(name).read()
                    vtcontent = base64.b64encode(contents)
                finally:
                    os.unlink(name)
                #if not vistrail.db_version:
                #    vistrail.db_version = currentVersion
                node.set('vtcontent',vtcontent)
                
            xmlstring = ElementTree.tostring(node)
            file_ = open(filename,'w')
            file_.write(xmlstring)
            file_.close()
            result = True
        return result
exportMashup(filename: str, vtcontroller: VistrailController, 
dataset/ETHPy150Open VisTrails/VisTrails/vistrails/gui/mashups/mashups_manager.py/MashupsManager.exportMashup