def run_parameter_exploration(locator, pe_id, extra_info = {},
                              reason="Console Mode Parameter Exploration Execution"):
    """run_parameter_exploration(w_list: (locator, version),
                                 pe_id: str/int,
                                 reason: str) -> (pe_id, [error msg])
    Run parameter exploration in w, and returns an interpreter result object.
    version can be a tag name or a version id.
    
    """
    if is_running_gui():
        from vistrails.gui.vistrail_controller import VistrailController as \
             GUIVistrailController
        try:
            (v, abstractions , thumbnails, mashups)  = load_vistrail(locator)
            controller = GUIVistrailController(v, locator, abstractions, 
                                               thumbnails, mashups)
            try:
                pe_id = int(pe_id)
                pe = controller.vistrail.get_paramexp(pe_id)
            except ValueError:
                pe = controller.vistrail.get_named_paramexp(pe_id)
            controller.change_selected_version(pe.action_id)
            controller.executeParameterExploration(pe, extra_info=extra_info,
                                                   showProgress=False)
        except Exception, e:
            return (locator, pe_id,
                    debug.format_exception(e), debug.format_exc())

    def updateVistrail(self, url, vistrail=None):
        """ updateVistrail(self, string:url, Vistrail:vistrail)
        Update the specified entity url. Delete or reload as necessary.
        Need to make sure workspaces are updated if the entity is changed.
        """
        entities = [e for e in self.entities.itervalues() if e.url == url]
        entity = entities[0] if len(entities) else None
        while entity and entity.parent:
            entity = entity.parent 
            url = entity.url
        workspaces = [p for p in self.workspaces if entity in self.workspaces[p]]
        if entity:
            for p in workspaces:
                self.del_from_workspace(entity, p)
            self.delete_entity(entity)

        locator = BaseLocator.from_url(url)
        if locator.is_valid():
            if not vistrail:
                (vistrail, abstractions, thumbnails, mashups) = load_vistrail(locator)
                vistrail.abstractions = abstractions
                vistrail.thumbnails = thumbnails
                vistrail.mashups = mashups
            entity = self.create_vistrail_entity(vistrail)
            for p in workspaces:
                self.add_to_workspace(entity, p)
            return entity
        else:
            # probably an unsaved vistrail
            pass

def get_vt_graph(vt_list, tree_info, pdf=False):
    """get_vt_graph(vt_list: list of locator, tree_info:str)
    Load all vistrails in vt_list and dump their tree to tree_info.
    
    """
    result = []
    if is_running_gui():
        from vistrails.gui.vistrail_controller import VistrailController as \
             GUIVistrailController
        for locator in vt_list:
            try:
                (v, abstractions , thumbnails, mashups)  = load_vistrail(locator)
                controller = GUIVistrailController(v, locator, abstractions, 
                                                   thumbnails, mashups)
                if tree_info is not None:
                    from vistrails.gui.version_view import QVersionTreeView
                    version_view = QVersionTreeView()
                    version_view.scene().setupScene(controller)
                    if pdf:
                        base_fname = "graph_%s.pdf" % locator.short_filename
                        filename = os.path.join(tree_info, base_fname)
                        version_view.scene().saveToPDF(filename)
                    else:
                        base_fname = "graph_%s.png" % locator.short_filename
                        filename = os.path.join(tree_info, base_fname)
                        version_view.scene().saveToPNG(filename)
                    del version_view
                    result.append((True, ""))
            except Exception, e:
                result.append((False, debug.format_exception(e)))

    def open_vistrail(self, locator, version=None, is_abstraction=False):
        """open_vistrail(locator: Locator, version = None: int or str,
                         is_abstraction: bool)

        opens a new vistrail from the given locator, selecting the
        given version.

        """
        self.close_first_vistrail_if_necessary()
        if self.single_document_mode and self.currentView():
            self.closeVistrail()
        view = self.ensureVistrail(locator)
        if view:
            if version is not None:
                if isinstance(version, basestring):
                    try:
                        version = view.vistrail.get_version_number(version)
                    except:
                        version = None
                if version is not None:
                    view.setup_view(version)
            return view
        try:
            (vistrail, abstraction_files, thumbnail_files, _) = \
                                        load_vistrail(locator, is_abstraction)
            result = self.set_vistrail_view(vistrail, locator, 
                                            abstraction_files, thumbnail_files,
                                            version)
            # update collection
            try:
                vistrail.thumbnails = thumbnail_files
                vistrail.abstractions = abstraction_files
                collection = Collection.getInstance()
                url = locator.to_url()
                # create index if not exist
                entity = collection.fromUrl(url)
                if entity:
                    # find parent vistrail
                    while entity.parent:
                        entity = entity.parent 
                else:
                    entity = collection.updateVistrail(url, vistrail)
                # add to relevant workspace categories
                collection.add_to_workspace(entity)
                collection.commit()
            except Exception, e:
                import traceback
                debug.critical('Failed to index vistrail', str(e) + traceback.format_exc())
            return result

def get_wf_graph(w_list, output_dir, pdf=False):
    """run_and_get_results(w_list: list of (locator, version), 
                           output_dir:str, pdf:bool)
    Load all workflows in wf_list and dump their graph to output_dir.
    
    """
    result = []
    if is_running_gui():
        from vistrails.gui.vistrail_controller import VistrailController as \
             GUIVistrailController
        for locator, workflow in w_list:
            try:
                (v, abstractions , thumbnails, mashups)  = load_vistrail(locator)
                controller = GUIVistrailController(v, locator, abstractions, 
                                                   thumbnails, mashups,
                                                   auto_save=False)
                # FIXME TE: why is this needed
                controller.current_pipeline_view.set_controller(controller)

                version = None
                if isinstance(workflow, basestring):
                    version = v.get_version_number(workflow)
                elif isinstance(workflow, (int, long)):
                    version = workflow
                elif workflow is None:
                    version = controller.get_latest_version_in_graph()
                else:
                    msg = "Invalid version tag or number: %s" % workflow
                    raise VistrailsInternalError(msg)

                controller.change_selected_version(version)

                if controller.current_pipeline is not None:
                    controller.updatePipelineScene()
                    if pdf:
                        base_fname = "%s_%s_pipeline.pdf" % \
                                     (locator.short_filename, version)
                        filename = os.path.join(output_dir, base_fname)
                        controller.current_pipeline_scene.saveToPDF(filename)
                    else:
                        base_fname = "%s_%s_pipeline.png" % \
                                     (locator.short_filename, version)
                        filename = os.path.join(output_dir, base_fname)
                        controller.current_pipeline_scene.saveToPNG(filename)
                    result.append((True, ""))
            except Exception, e:
                result.append((False, debug.format_exception(e)))

 def update_from_database(self, db_locator):
     # db_conn = db_locator.get_connection()
     config = (('host', db_locator._host),
               ('port', int(db_locator._port)),
               ('db', db_locator._db),
               ('user', db_locator._user),
               ('passwd', db_locator._passwd))
     rows = vistrails.db.services.io.get_db_object_list(dict(config), 'vistrail')
     for row in rows:
         if row[0] in [1,]:
             continue
         kwargs = {'obj_type': 'vistrail', 'obj_id': row[0]}
         locator = DBLocator(*[x[1] for x in config], **kwargs)
         (vistrail, abstractions, thumbnails, mashups) = load_vistrail(locator)
         vistrail.abstractions = abstractions
         vistrail.thumbnails = thumbnails
         vistrail.mashups = mashups
         self.create_vistrail_entity(vistrail)

    def test_cache(self):
        from vistrails.core.modules.basic_modules import StandardOutput
        old_compute = StandardOutput.compute
        StandardOutput.compute = lambda s: None

        try:
            from vistrails.core.db.locator import XMLFileLocator
            from vistrails.core.vistrail.controller import VistrailController
            from vistrails.core.db.io import load_vistrail

            """Test if basic caching is working."""
            locator = XMLFileLocator(vistrails.core.system.vistrails_root_directory() +
                                '/tests/resources/dummy.xml')
            (v, abstractions, thumbnails, mashups) = load_vistrail(locator)

            # the controller will take care of upgrades
            controller = VistrailController(v, locator, abstractions,
                                            thumbnails,  mashups)
            p1 = v.getPipeline('int chain')
            n = v.get_version_number('int chain')
            controller.change_selected_version(n)
            controller.flush_delayed_actions()
            p1 = controller.current_pipeline

            view = DummyView()
            interpreter = CachedInterpreter.get()
            result = interpreter.execute(p1,
                                         locator=v,
                                         current_version=n,
                                         view=view,
                                         )
            # to force fresh params
            p2 = v.getPipeline('int chain')
            controller.change_selected_version(n)
            controller.flush_delayed_actions()
            p2 = controller.current_pipeline
            result = interpreter.execute(p2,
                                         locator=v,
                                         current_version=n,
                                         view=view,
                                         )
            self.assertEqual(len(result.modules_added), 1)
        finally:
            StandardOutput.compute = old_compute

 def update_from_database(self, db_locator):
     # db_conn = db_locator.get_connection()
     config = {'host': db_locator._host,
               'port': int(db_locator._port),
               'db': db_locator._db,
               'user': db_locator._user,
               'passwd': db_locator._passwd}
     rows = vistrails.db.services.io.get_db_object_list(config, 'vistrail')
     for row in rows:
         if row[0] in [1,]:
             continue
         locator = DBLocator(config['host'], config['port'], config['db'],
                             config['user'], config['passwd'],
                             obj_type='vistrail', obj_id=row[0])
         (vistrail, abstractions, thumbnails, mashups) = load_vistrail(locator)
         vistrail.abstractions = abstractions
         vistrail.thumbnails = thumbnails
         vistrail.mashups = mashups
         self.create_vistrail_entity(vistrail)

    def newVistrail(self, recover_files=True):
        """ newVistrail() -> (None or QVistrailView)
        Create a new vistrail with no name. If user cancels process,
        returns None.

        FIXME: We should do the interactive parts separately.
        
        """
        if self.single_document_mode and self.currentView():
            if not self.closeVistrail():
                return None
        if recover_files and untitled_locator().has_temporaries():
            locator = copy.copy(untitled_locator())
        else:
            locator = None
        try:
            (vistrail, abstraction_files, thumbnail_files, _) = load_vistrail(locator)
        except ModuleRegistryException, e:
            debug.critical("Module registry error for %s" %
                           str(e.__class__.__name__), str(e))

def run_and_get_results(w_list, parameters='', output_dir=None, 
                        update_vistrail=True, extra_info=None, 
                        reason='Console Mode Execution'):
    """run_and_get_results(w_list: list of (locator, version), parameters: str,
                           output_dir:str, update_vistrail: boolean,
                           extra_info:dict)
    Run all workflows in w_list, and returns an interpreter result object.
    version can be a tag name or a version id.
    
    """
    elements = parameters.split("$&$")
    aliases = {}
    params = []
    result = []
    for locator, workflow in w_list:
        (v, abstractions , thumbnails, mashups)  = load_vistrail(locator)
        controller = VistrailController(v, locator, abstractions, thumbnails,
                                        mashups, auto_save=update_vistrail)
        if isinstance(workflow, basestring):
            version = v.get_version_number(workflow)
        elif isinstance(workflow, (int, long)):
            version = workflow
        elif workflow is None:
            version = controller.get_latest_version_in_graph()
        else:
            msg = "Invalid version tag or number: %s" % workflow
            raise VistrailsInternalError(msg)
        controller.change_selected_version(version)
        
        for e in elements:
            pos = e.find("=")
            if pos != -1:
                key = e[:pos].strip()
                value = e[pos+1:].strip()
            
                if controller.current_pipeline.has_alias(key):
                    aliases[key] = value
                elif 'mashup_id' in extra_info:
                    # new-style mashups can have aliases not existing in pipeline
                    for mashuptrail in mashups:
                        if mashuptrail.vtVersion == version:
                            mashup = mashuptrail.getMashup(extra_info['mashup_id'])
                            c = mashup.getAliasByName(key).component
                            params.append((c.vttype, c.vtid, value))

        if output_dir is not None and controller.current_pipeline is not None:
            # FIXME DAK: why is this always done?!? there is a flag for it...
            if is_running_gui():
                controller.updatePipelineScene()
                base_fname = "%s_%s_pipeline.pdf" % (locator.short_filename, version)
                filename = os.path.join(output_dir, base_fname)
                controller.current_pipeline_scene.saveToPDF(filename)
            else:
                debug.critical("Cannot save pipeline figure when not "
                               "running in gui mode")
            base_fname = "%s_%s_pipeline.xml" % (locator.short_filename, version)
            filename = os.path.join(output_dir, base_fname)
            vistrails.core.db.io.save_workflow(controller.current_pipeline, filename)
        if not update_vistrail:
            conf = get_vistrails_configuration()
            if conf.has('thumbs'):
                conf.thumbs.autoSave = False
        
        jobMonitor = controller.jobMonitor
        current_workflow = jobMonitor.currentWorkflow()
        if not current_workflow:
            for job in jobMonitor.workflows.itervalues():
                try:
                    job_version = int(job.version)
                except ValueError:
                    job_version =  v.get_version_number(job.version)
                if version == job_version:
                    current_workflow = job
                    jobMonitor.startWorkflow(job)
            if not current_workflow:
                current_workflow = JobWorkflow(version)
                jobMonitor.startWorkflow(current_workflow)

        try:
            (results, _) = \
            controller.execute_current_workflow(custom_aliases=aliases,
                                                custom_params=params,
                                                extra_info=extra_info,
                                                reason=reason)
        finally:
            jobMonitor.finishWorkflow()
        new_version = controller.current_version
        if new_version != version:
            debug.log("Version '%s' (%s) was upgraded. The actual "
                      "version executed was %s" % (
                      workflow, version, new_version))
        run = results[0]
        run.workflow_info = (locator.name, new_version)
        run.pipeline = controller.current_pipeline

        if update_vistrail:
            controller.write_vistrail(locator)
        result.append(run)
        if current_workflow.jobs:
            if current_workflow.completed():
#.........这里部分代码省略.........

    def test_infinite_looping_upgrade(self):
        """Test that circular upgrades fail gracefully"""
        # Expected actions are as follow:
        #  - loads workflow2.xml
        #  * pipeline is missing looping_fix.x version 0.1
        #  - enables looping_fix.x (version 0.2)
        #  * pipeline is still missing looping_fix.x version 0.1
        #  - runs upgrade for looping_fix.x, 0.1 -> 0.2
        #  - upgrade changes modules to package looping_fix.y version 0.1
        #  * pipeline is missing looping_fix.y version 0.1
        #  - enables looping_fix.y (version 0.2)
        #  * pipeline is still missing looping_fix.y version 0.1
        # Loop 50 times:
        #  - runs upgrade for looping_fix.y, 0.1 -> 0.2
        #  - upgrade changes modules to package looping_fix.x version 0.1
        #  * pipeline is missing looping_fix.x version 0.1
        #  - runs upgrade for looping_fix.x, 0.1 -> 0.2
        #  - upgrade changes modules to package looping_fix.y version 0.1
        #  * pipeline is missing looping_fix.y version 0.1
        # 50 calls to handle_invalid_pipeline()

        # Pre-adds packages so that the package manager can find them
        packages = ["pkg_x", "pkg_y"]
        prefix = "vistrails.tests.resources.looping_upgrades."
        pm = get_package_manager()
        for pkg in packages:
            pm.get_available_package(pkg, prefix=prefix)

        # Hooks handle_invalid_pipeline()
        from vistrails.core.vistrail.controller import VistrailController

        orig_hip = VistrailController.handle_invalid_pipeline
        count = [0]

        def new_hip(*args, **kwargs):
            count[0] += 1
            return orig_hip(*args, **kwargs)

        VistrailController.handle_invalid_pipeline = new_hip
        try:

            # Loads workflow.xml
            from vistrails.core.db.io import load_vistrail
            from vistrails.core.db.locator import FileLocator
            from vistrails.core.system import vistrails_root_directory

            locator = FileLocator(
                os.path.join(vistrails_root_directory(), "tests", "resources", "looping_upgrades", "workflow2.xml")
            )
            loaded_objs = load_vistrail(locator)
            controller = VistrailController(loaded_objs[0], locator, *loaded_objs[1:])

            # Select version (triggers all the validation/upgrade/loading)
            self.assertEqual(controller.get_latest_version_in_graph(), 1)
            try:
                controller.do_version_switch(1)
            except InvalidPipeline:
                pass
            else:
                self.fail("No InvalidPipeline exception raised!")

        # Restores handle_invalid_pipeline()
        finally:
            VistrailController.handle_invalid_pipeline = orig_hip
            # disable packages
            for pkg in reversed(packages):
                try:
                    pm.late_disable_package(pkg)
                except MissingPackage:
                    pass
        # make sure it looped 50 times before failing
        max_loops = getattr(get_vistrails_configuration(), "maxPipelineFixAttempts", 50)
        self.assertEqual(count[0], max_loops)
        # Check that original version gets selected
        self.assertEqual(1, controller.current_version)

    def test_looping_pipeline_fix(self):
        """Chains upgrades and automatic package initialization."""
        # Expected actions are as follow:
        #  - loads workflow.xml
        #  * pipeline is missing looping_fix.a version 0.1
        #  - enables looping_fix.a (version 0.2)
        #  * pipeline is still missing looping_fix.a version 0.1
        #  - runs upgrade for looping_fix.a, 0.1 -> 0.2
        #  - upgrade changes modules to package looping_fix.b version 0.1
        #  * pipeline is missing looping_fix.b version 0.1
        #  - enables looping_fix.b (version 0.2)
        #  * pipeline is still missing looping_fix.b version 0.1
        #  - runs upgrade for looping_fix.b, 0.1 -> 0.2
        #  - upgrade changes modules to package looping_fix.c version 1.0
        #  * pipeline is missing looping_fix.c version 1.0
        #  - enables looping_fix.c (version 1.0)
        #  * pipeline is valid
        # 5 calls to handle_invalid_pipeline()

        # Pre-adds packages so that the package manager can find them
        packages = ["pkg_a", "pkg_b", "pkg_c"]
        prefix = "vistrails.tests.resources.looping_upgrades."
        pm = get_package_manager()
        for pkg in packages:
            pm.get_available_package(pkg, prefix=prefix)
        self.assertFalse(set(pkg.codepath for pkg in pm.enabled_package_list()).intersection(packages))

        # Hooks handle_invalid_pipeline()
        from vistrails.core.vistrail.controller import VistrailController

        orig_hip = VistrailController.handle_invalid_pipeline
        count = [0]

        def new_hip(*args, **kwargs):
            count[0] += 1
            return orig_hip(*args, **kwargs)

        VistrailController.handle_invalid_pipeline = new_hip
        try:

            # Loads workflow.xml
            from vistrails.core.db.io import load_vistrail
            from vistrails.core.db.locator import FileLocator
            from vistrails.core.system import vistrails_root_directory

            locator = FileLocator(
                os.path.join(vistrails_root_directory(), "tests", "resources", "looping_upgrades", "workflow.xml")
            )
            loaded_objs = load_vistrail(locator)
            controller = VistrailController(loaded_objs[0], locator, *loaded_objs[1:])

            # Select version (triggers all the validation/upgrade/loading)
            self.assertEqual(controller.get_latest_version_in_graph(), 1)
            controller.do_version_switch(1)

            self.assertEqual(count[0], 5)
        # Restores handle_invalid_pipeline()
        finally:
            VistrailController.handle_invalid_pipeline = orig_hip
            # disable packages
            for pkg in reversed(packages):
                try:
                    pm.late_disable_package(pkg)
                except MissingPackage:
                    pass

def run_and_get_results(w_list, parameters='', workflow_info=None, 
                        update_vistrail=True, extra_info=None, 
                        reason='Console Mode Execution'):
    """run_and_get_results(w_list: list of (locator, version), parameters: str,
                           workflow_info:str, update_vistrail: boolean,
                           extra_info:dict)
    Run all workflows in w_list, and returns an interpreter result object.
    version can be a tag name or a version id.
    
    """
    elements = parameters.split("$&$")
    aliases = {}
    result = []
    for locator, workflow in w_list:
        (v, abstractions , thumbnails, mashups)  = load_vistrail(locator)
        controller = VistrailController(v, locator, abstractions, thumbnails, 
                                        mashups, auto_save=update_vistrail)
        if isinstance(workflow, basestring):
            version = v.get_version_number(workflow)
        elif isinstance(workflow, (int, long)):
            version = workflow
        elif workflow is None:
            version = controller.get_latest_version_in_graph()
        else:
            msg = "Invalid version tag or number: %s" % workflow
            raise VistrailsInternalError(msg)
        controller.change_selected_version(version)
        
        for e in elements:
            pos = e.find("=")
            if pos != -1:
                key = e[:pos].strip()
                value = e[pos+1:].strip()
            
                if controller.current_pipeline.has_alias(key):
                    aliases[key] = value
                    
        if workflow_info is not None and controller.current_pipeline is not None:
            # FIXME DAK: why is this always done?!? there is a flag for it...
            if is_running_gui():
                controller.updatePipelineScene()
                base_fname = "%s_%s_pipeline.pdf" % (locator.short_filename, version)
                filename = os.path.join(workflow_info, base_fname)
                controller.current_pipeline_scene.saveToPDF(filename)
            else:
                debug.critical("Cannot save pipeline figure when not "
                               "running in gui mode")
            base_fname = "%s_%s_pipeline.xml" % (locator.short_filename, version)
            filename = os.path.join(workflow_info, base_fname)
            vistrails.core.db.io.save_workflow(controller.current_pipeline, filename)
        if not update_vistrail:
            conf = get_vistrails_configuration()
            if conf.has('thumbs'):
                conf.thumbs.autoSave = False
        
        (results, _) = \
            controller.execute_current_workflow(custom_aliases=aliases,
                                                extra_info=extra_info,
                                                reason=reason)
        new_version = controller.current_version
        if new_version != version:
            debug.warning("Version '%s' (%s) was upgraded. The actual "
                          "version executed was %s" % \
                              (workflow, version, new_version))
        run = results[0]
        run.workflow_info = (locator.name, new_version)
        run.pipeline = controller.current_pipeline

        if update_vistrail:
            controller.write_vistrail(locator)
        result.append(run)
    return result

#.........这里部分代码省略.........
            # check if this vt is from the repository
            if controller.vistrail.get_annotation('repository_vt_id'):
                repository_vt_id = controller.vistrail.get_annotation('repository_vt_id').value
            else:
                repository_vt_id = -1

            # upload vistrail temp file to repository
            register_openers(cookiejar=self.dialog.cookiejar)
            project = self.serverCombo.itemData(self.serverCombo.currentIndex())[0]
            if project == "Default": project = ""

            params = {'vistrail_file': open(filename, 'rb'),
                      'action': 'upload',
                      'name': controller.locator.short_name,
                      'repository_vt_id': repository_vt_id if not branching else -1,
                      'is_runnable': not bool(len(self.unsupported_packages)+ \
                                              len(self.local_data_modules)),
                      'vt_id': 0,
                      'branched_from': "" if not branching else repository_vt_id,
                      'project': project,
                      'everyone_can_view': self.perm_view.checkState(),
                      'everyone_can_edit': self.perm_edit.checkState(),
                      'everyone_can_download': self.perm_download.checkState()
                     }

            upload_url = "%s/vistrails/remote_upload/" % \
                    self.config.webRepositoryURL

            datagen, headers = multipart_encode(params)
            request = urllib2.Request(upload_url, datagen, headers)
            result = urllib2.urlopen(request)
            updated_response = result.read()

            os.unlink(filename)

            if updated_response[:6] == "upload":
                # No update, just upload
                if result.code != 200:
                    self._repository_status['details'] = \
                            "Push to repository failed"
                    debug.critical("Push to repository failed (Please contact an administrator)")
                else:
                    repository_vt_id = int(updated_response[8:])
                    controller.vistrail.set_annotation('repository_vt_id',
                                                       repository_vt_id)
                    controller.vistrail.set_annotation('repository_creator',
                                                       self.dialog.loginUser)
                    # ensure that the annotations get saved
                    controller.set_changed(True)
                    self._repository_status['details'] = \
                            "Push to repository was successful"
            else:
                # update, load updated vistrail
                if result.code != 200:
                    self._repository_status['details'] = "Update Failed"
                    debug.critical("Update vistrail in web repository failed (Please contact an administrator)")
                else:
                    debug.log("getting version from web")
                    # request file to download
                    download_url = "%s/vistrails/download/%s/" % \
                            (self.config.webRepositoryURL, updated_response)

                    request = urllib2.Request(download_url)
                    result = urllib2.urlopen(request)
                    updated_file = result.read()

                    # create temp file of updated vistrail
                    (fd, updated_filename) = tempfile.mkstemp(suffix='.vtl',
                                                              prefix='vtl_tmp')
                    os.close(fd)
                    updated_vt = open(updated_filename, 'w')
                    updated_vt.write(updated_file)
                    updated_vt.close()

                    # switch vistrails to updated one
                    controller = vistrails.api.get_current_controller()

                    updated_locator = FileLocator(updated_filename)

                    (up_vistrail, abstractions, thumbnails, mashups) = \
                            load_vistrail(updated_locator)

                    # FIXME need to figure out what to do with this !!!
                    controller.set_vistrail(up_vistrail,
                                            controller.vistrail.locator,
                                            abstractions, thumbnails, mashups)

                    # update version tree drawing
                    controller.recompute_terse_graph()
                    controller.invalidate_version_tree()

                    os.remove(updated_filename)
                    os.remove(updated_filename[:-1])

                    self._repository_status['details'] = \
                            "Update to repository was successful"

        except Exception, e:
            debug.critical("An error occurred", str(e))
            self._repository_status['details'] = "An error occurred"

    def load(self, loadworkflow=True):
        config = ConfigParser.ConfigParser()
        if config.read(self.config_file):
            if config.has_section('global'):
                if config.has_option('global', 'cellnum'):
                    self.cellnum = config.getint('global', 'cellnum')
                if config.has_option('global', 'filenum'):
                    self.filenum = config.getint('global', 'filenum')
                if config.has_option('global', 'varnum'):
                    self.varnum = config.getint('global', 'varnum')
                    print "   ------ Loaded plot %s, varnum = %d ------ " % ( self.name, self.varnum )
                if config.has_option('global', 'workflow_tag'):
                    self.workflow_tag = config.get('global', 'workflow_tag')
#                else:
#                    debug.warning("CDAT Package: file %s does not contain a required option 'workflow_tag'. Widget will not be loaded."%self.config_file)
#                    self.loaded = False
#                    return
                if config.has_option('global', 'filetypes'):
                    types = config.get('global', 'filetypes')
                    tlist = [t.strip() for t in types.split(";")]
                    for t in tlist:
                        kv = t.split(":")
                        self.filetypes[kv[0].strip()] = [v.strip() 
                                                         for v in kv[1].split(",")]
                if config.has_option('global', 'qt_filter'):
                    self.qt_filter = config.get('global', 'qt_filter')
                if config.has_option('global', 'dependencies'):
                    deps = config.get('global', 'dependencies')
                    self.dependencies = [d.strip() for d in deps.split(",")]
            
                if config.has_option('global', 'serialized_config_alias'):
                    self.serializedConfigAlias = config.get('global', 'serialized_config_alias')

                    for y in range(self.filenum):
                        self.files.append( 'Filename' + str(y+1) )
                            
                    for v in range(self.varnum):
                        self.vars.append( 'VariableName' + str(v+1) )
                        self.axes.append( 'Axes' + str(v+1) )

                    for x in range(self.cellnum):
                        section_name = 'cell' + str(x+1)
                        if config.has_section(section_name):
                            cellType = config.get(section_name, 'celltype')
                            if config.has_option(section_name, 'address_alias'):
                                self.cells.append( Cell( cellType, None, None,
                                                     config.get(section_name, 'address_alias') ) )
                            else:
                                self.cells.append(Cell( cellType,"Row"+str(x+1), "Column"+str(x+1) ) )                                                              
                else:
                    
                    for y in range(self.filenum):
                        option_name = 'filename_alias' + str(y+1)
                        if config.has_option('global', option_name):
                            self.files.append(config.get('global', option_name))
                            
                    for v in range(self.varnum):
                        option_name = 'varname_alias' + str(v+1)
                        if config.has_option('global', option_name):
                            self.vars.append(config.get('global', option_name))
                        axes_name = 'axes_alias' + str(v+1)
                        if config.has_option('global', axes_name):
                            self.axes.append(config.get('global', axes_name))
                        
                    for x in range(self.cellnum):
                        section_name = 'cell' + str(x+1)
                        if (config.has_section(section_name) and
                            config.has_option(section_name, 'celltype') and
                            config.has_option(section_name, 'row_alias') and
                            config.has_option(section_name, 'col_alias')):
                            self.cells.append(Cell(config.get(section_name, 'celltype'),
                                                   config.get(section_name, 'row_alias'),
                                                   config.get(section_name, 'col_alias')))
                
                if loadworkflow:
                    #load workflow in vistrail
                    #only if dependencies are enabled
                    manager = get_package_manager()
                    self.unsatisfied_deps = []
                    for dep in self.dependencies:
                        if not manager.has_package(dep):
                            self.unsatisfied_deps.append(dep)
                    if len(self.unsatisfied_deps) == 0:
                        try:
                            (self.plot_vistrail, abstractions , thumbnails, mashups) = load_vistrail(self.locator)
                            controller = VistrailController()
                            controller.set_vistrail(self.plot_vistrail, self.locator, 
                                                    abstractions, thumbnails,
                                                    mashups) 
    
                            self.workflow_version = self.plot_vistrail.get_version_number(self.workflow_tag) if self.workflow_tag else controller.get_latest_version_in_graph()
                            print " Loaded %s version: %s" % (  self.name, str( self.workflow_version ) )
                            controller.change_selected_version(self.workflow_version)
                            self.workflow = controller.current_pipeline
                            self.loaded = True
                        except Exception, err:
                            debug.warning( "Error loading workflow %s: %s" % ( self.name, err ) )
                            self.loaded = False
                    else:
                        debug.warning("UV-CDAT: %s widget could not be loaded \
#.........这里部分代码省略.........