Examples of ptolemy.kernel.CompositeEntity

ptolemy.kernel.CompositeEntity
A CompositeEntity is a cluster in a clustered graph. I.e., it is a non-atomic entity, in that it can contain other entities and relations. It supports transparent ports, where, in effect, the port of a contained entity is represented by a port of this entity. Methods that "deeply" traverse the topology see right through transparent ports. It may be opaque, in which case its ports are opaque and methods that "deeply" traverse the topology do not see through them. For instance, deepEntityList() returns the opaque entities directly or indirectly contained by this entity.
To add an entity or relation to this composite, call its setContainer() method with this composite as an argument. To remove it, call its setContainer() method with a null argument (or another container). The entity must be an instance of ComponentEntity and the relation of ComponentRelation or an exception is thrown. Derived classes may further constrain these to subclasses. To do that, they should override the protected methods _addEntity() and _addRelation() and the public member newRelation().
A CompositeEntity may be contained by another CompositeEntity. To set that up, call the setContainer() method of the inside entity. Derived classes may further constrain the container to be a subclass of CompositeEntity. To do this, they should override setContainer() to throw an exception. Recursive containment structures, where an entity directly or indirectly contains itself, are disallowed, and an exception is thrown on an attempt to set up such a structure.
A CompositeEntity can contain instances of ComponentPort. By default these ports will be transparent, although subclasses of CompositeEntity can make them opaque by overriding the isOpaque() method to return true. Derived classes may further constrain the ports to a subclass of ComponentPort. To do this, they should override the public method newPort() to create a port of the appropriate subclass, and the protected method _addPort() to throw an exception if its argument is a port that is not of the appropriate subclass.
Since contained entities implement the {@link ptolemy.kernel.util.Instantiable} interface,some may be class definitions. If an entity is a class definition, then it is not included in the lists returned by {@link #entityList()}, {@link #entityList(Class)}, {@link #deepEntityList()}, and {@link #allAtomicEntityList()}. Correspondingly, if it is not a class definition, then it is not included in the list returned by {@link #classDefinitionList()}. Contained class definitions are nonetheless required to have names distinct from contained entities that are not class definitions, and the method {@link #getEntity(String)} will return eithera class definition or an entity that is not a class definition, as long as the name matches. Note that contained entities that are class definitions cannot be connected to other entities. Moreover, they cannot be deleted as long as there are either subclasses or instances present. @author John S. Davis II, Edward A. Lee, contributor: Christopher Brooks @version $Id: CompositeEntity.java,v 1.185 2007/12/07 06:24:42 cxh Exp $ @since Ptolemy II 0.2 @Pt.ProposedRating Green (eal) @Pt.AcceptedRating Green (hyzheng)

     *  as a new library.
     */
    public static void openLibrary(Configuration configuration, File file)
            throws Exception {


        CompositeEntity library = null;
        final CompositeEntity libraryContainer = (CompositeEntity) configuration
                .getEntity("actor library");


        final ModelDirectory directory = (ModelDirectory) configuration
                .getEntity(Configuration._DIRECTORY_NAME);


        if (directory == null) {
            return;
        }


        if (libraryContainer == null) {
            return;
        }


        StringAttribute alternateLibraryBuilderAttribute = (StringAttribute) libraryContainer
                .getAttribute("_alternateLibraryBuilder");


        // If the _alternateLibraryBuilder attribute is present,
        // then we use the specified class to build the library
        // instead of just reading the moml.


        if (alternateLibraryBuilderAttribute != null) {
            // Get the class that will build the library from the plugins
            String libraryBuilderClassName = alternateLibraryBuilderAttribute
                    .getExpression();


            // Dynamically load the library builder and build the library
            Class libraryBuilderClass = Class.forName(libraryBuilderClassName);
            LibraryBuilder libraryBuilder = (LibraryBuilder) libraryBuilderClass
                    .newInstance();


            // Set the attributes defined in the moml to the attributes of the
            // LibraryBuilder
            libraryBuilder.addAttributes(alternateLibraryBuilderAttribute
                    .attributeList());


            try {
                library = libraryBuilder.buildLibrary(libraryContainer
                        .workspace());
            } catch (Exception ex) {
                ex.printStackTrace();
                throw new Exception("Cannot create library with "
                        + "LibraryBuilder: ", ex);
            }
        }


        // If we have a jar URL, convert spaces to %20
        URL fileURL = JNLPUtilities.canonicalizeJarURL(file.toURI().toURL());


        String identifier = fileURL.toExternalForm();


        // Check to see whether the library is already open.
        Effigy libraryEffigy = directory.getEffigy(identifier);


        if (libraryEffigy == null) {
            if (library == null) {
                // Only do this if the library hasn't been set above
                // by a LibraryBuilder
                // No previous libraryEffigy exists that is identified
                // by this URL.  Parse the user library into the
                // workspace of the actor library.
                MoMLParser parser = new MoMLParser(libraryContainer.workspace());


                // Set the ErrorHandler so that if we have
                // compatibility problems between devel and production
                // versions, we can skip that element.
                //MoMLParser.setErrorHandler(new VergilErrorHandler());

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        if (entity == null) {
            throw new NullPointerException("Save in library failed. "
                    + "entity was null, cannot save a null entity.");
        }
        try {
            CompositeEntity libraryInstance = (CompositeEntity) configuration
                    .getEntity("actor library." + USER_LIBRARY_NAME);


            if (libraryInstance == null) {
                throw new IOException("Save In Library failed: "
                        + "Could not find user library with name \""
                        + USER_LIBRARY_NAME + "\".");
            }


            // Note that the library in the configuration is an
            // instance of another model.  We have to go get the
            // original model to make sure that the change propagates
            // back to the file from which the library is loaded from.
            Tableau libraryTableau = configuration.openModel(libraryInstance);
            PtolemyEffigy libraryEffigy = (PtolemyEffigy) libraryTableau
                    .getContainer();
            CompositeEntity library = (CompositeEntity) libraryEffigy
                    .getModel();


            StringWriter buffer = new StringWriter();


            // Check whether there is already something existing in the
            // user library with this name.
            if (library == null) {
                throw new InternalErrorException("Save in library failed. "
                        + "libraryEffigy.getModel() returned null.");
            }
            if (library.getEntity(entity.getName()) != null) {
                throw new NameDuplicationException(
                        entity,
                        "Save In Library failed: An object"
                                + " already exists in the user library with name "
                                + "\"" + entity.getName() + "\".");
            }


            entity.exportMoML(buffer, 1);


            ChangeRequest request = new MoMLChangeRequest(entity, library,
                    buffer.toString());
            library.requestChange(request);
        } catch (IOException ex) {
            // Ignore.
        } catch (KernelException ex) {
            // Ignore.
        }

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            if (immediateContainer == null) {
                MessageHandler.error("State has no container!");
                return;
            }


            final CompositeEntity container = (CompositeEntity) immediateContainer
                    .getContainer();


            if (container == null) {
                MessageHandler.error("State container has no container!");
                return;
            }


            // Open a dialog to get the refinement name and class.
            Query query = new Query();
            String defaultName = container.uniqueName(state.getName());
            query.addLine("Name", "Name", defaultName);


            // See whether the configuration offers state refinements.
            Configuration configuration = ((FSMGraphController) getController())
                    .getConfiguration();
            Entity refinements = configuration.getEntity("_stateRefinements");


            // Default choices.
            String[] choiceClasses = { "ptolemy.domains.fsm.modal.Refinement",
                    "ptolemy.domains.fsm.modal.ModalController" };
            String[] choiceNames = { "Default Refinement",
                    "State Machine Refinement" };


            // Check the configuration to see whether the default is overridden.
            if (refinements instanceof CompositeEntity) {
                // There is a specification.
                List refinementList = ((CompositeEntity) refinements)
                        .entityList();
                choiceNames = new String[refinementList.size()];
                choiceClasses = new String[refinementList.size()];


                Iterator iterator = refinementList.iterator();
                int count = 0;


                while (iterator.hasNext()) {
                    Entity entity = (Entity) iterator.next();
                    choiceNames[count] = entity.getName();
                    choiceClasses[count++] = entity.getClass().getName();
                }
            }


            query
                    .addChoice("Class", "Class", choiceNames, choiceNames[0],
                            true);


            // FIXME: Need a frame owner for first arg.
            // Perhaps calling getController(), which returns a GraphController
            // will be a good start.
            ComponentDialog dialog = new ComponentDialog(null,
                    "Specify Refinement", query);


            if (!dialog.buttonPressed().equals("OK")) {
                return;
            }


            final String newName = query.getStringValue("Name");


            if (container.getEntity(newName) != null) {
                MessageHandler.error("There is already a refinement with name "
                        + newName + ".");
                return;
            }


            int choiceIndex = query.getIntValue("Class");
            String newClass = choiceClasses[choiceIndex];


            String currentRefinements = state.refinementName.getExpression();


            if ((currentRefinements == null) || currentRefinements.equals("")) {
                currentRefinements = newName;
            } else {
                currentRefinements = currentRefinements.trim() + ", " + newName;
            }


            String moml;


            // The MoML we create depends on whether the configuration
            // specified a set of prototype refinements.
            if (refinements instanceof CompositeEntity) {
                String choiceName = choiceNames[choiceIndex];
                Entity template = ((CompositeEntity) refinements)
                        .getEntity(choiceName);
                String templateDescription = template.exportMoML(newName);
                moml = "<group>" + templateDescription + "<entity name=\""
                        + state.getName(container)
                        + "\"><property name=\"refinementName\" value=\""
                        + currentRefinements + "\"/></entity></group>";
            } else {
                moml = "<group><entity name=\"" + newName + "\" class=\""
                        + newClass + "\"/>" + "<entity name=\""
                        + state.getName(container)
                        + "\"><property name=\"refinementName\" value=\""
                        + currentRefinements + "\"/></entity></group>";
            }


            MoMLChangeRequest change = new MoMLChangeRequest(this, container,
                    moml) {
                protected void _execute() throws Exception {
                    super._execute();


                    // Mirror the ports of the container in the refinement.
                    // Note that this is done here rather than as part of
                    // the MoML because we have set protected variables
                    // in the refinement to prevent it from trying to again
                    // mirror the changes in the container.
                    Entity entity = container.getEntity(newName);


                    // Get the initial port configuration from the container.
                    Iterator ports = container.portList().iterator();


                    while (ports.hasNext()) {
                        Port port = (Port) ports.next();


                        try {
                            // NOTE: This is awkward.
                            if (entity instanceof Refinement) {
                                ((Refinement) entity).setMirrorDisable(true);
                            } else if (entity instanceof ModalController) {
                                ((ModalController) entity)
                                        .setMirrorDisable(true);
                            }


                            Port newPort = entity.newPort(port.getName());


                            if (newPort instanceof RefinementPort
                                    && port instanceof IOPort) {
                                try {
                                    ((RefinementPort) newPort)
                                            .setMirrorDisable(true);


                                    if (((IOPort) port).isInput()) {
                                        ((RefinementPort) newPort)
                                                .setInput(true);
                                    }


                                    if (((IOPort) port).isOutput()) {
                                        ((RefinementPort) newPort)
                                                .setOutput(true);
                                    }


                                    if (((IOPort) port).isMultiport()) {
                                        ((RefinementPort) newPort)
                                                .setMultiport(true);
                                    }


                                    /* No longer needed since Yuhong modified
                                     * the type system to allow UNKNOWN. EAL
                                     if (port instanceof TypedIOPort
                                     && newPort instanceof TypedIOPort) {
                                     ((TypedIOPort)newPort).setTypeSameAs(
                                     (TypedIOPort)port);
                                     }
                                     */
                                } finally {
                                    ((RefinementPort) newPort)
                                            .setMirrorDisable(false);
                                }
                            }
                        } finally {
                            // NOTE: This is awkward.
                            if (entity instanceof Refinement) {
                                ((Refinement) entity).setMirrorDisable(false);
                            } else if (entity instanceof ModalController) {
                                ((ModalController) entity)
                                        .setMirrorDisable(false);
                            }
                        }
                    }


                    if (_configuration != null) {
                        // Look inside.
                        _configuration.openModel(entity);
                    }
                }
            };


            container.requestChange(change);
        }

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            }


            State state = (State) target;


            // Check that all these containers exist.
            CompositeEntity immediateContainer = (CompositeEntity) state
                    .getContainer();


            if (immediateContainer == null) {
                MessageHandler.error("State has no container!");
                return;
            }


            final CompositeEntity container = (CompositeEntity) immediateContainer
                    .getContainer();


            if (container == null) {
                MessageHandler.error("State container has no container!");
                return;
            }


            TypedActor[] refinements;


            try {
                refinements = state.getRefinement();
            } catch (Exception ex) {
                MessageHandler.error("Invalid refinements.", ex);
                return;
            }


            if ((refinements == null) || (refinements.length < 1)) {
                MessageHandler.error("No refinements to remove.");
                return;
            }


            String[] choices = new String[refinements.length];


            for (int i = 0; i < refinements.length; i++) {
                choices[i] = ((Nameable) refinements[i]).getName();
            }


            // Open a dialog to get the refinement name and class.
            Query query = new Query();
            query.addChoice("Refinement", "Refinement", choices, choices[0],
                    false);


            // FIXME: Need a frame owner for first arg.
            // Perhaps calling getController(), which returns a GraphController
            // will be a good start.
            ComponentDialog dialog = new ComponentDialog(null,
                    "Specify Refinement", query);


            if (!dialog.buttonPressed().equals("OK")) {
                return;
            }


            String refinementName = query.getStringValue("Refinement");
            StringBuffer newRefinements = new StringBuffer();
            String currentRefinements = state.refinementName.getExpression();
            StringTokenizer tokenizer = new StringTokenizer(currentRefinements,
                    ",");


            while (tokenizer.hasMoreTokens()) {
                String token = tokenizer.nextToken();


                if (!token.trim().equals(refinementName)) {
                    if (newRefinements.length() > 0) {
                        newRefinements.append(", ");
                    }


                    newRefinements.append(token.trim());
                }
            }


            // Check to see whether any other state or transition has
            // this refinment, and if not, remove it from its container.
            Iterator states = immediateContainer.entityList().iterator();
            boolean foundOne = false;


            while (states.hasNext()) {
                NamedObj other = (NamedObj) states.next();


                if ((other != state) && other instanceof State) {
                    String refinementList = ((State) other).refinementName
                            .getExpression();


                    if (refinementList == null) {
                        continue;
                    }


                    tokenizer = new StringTokenizer(refinementList, ",");


                    while (tokenizer.hasMoreTokens()) {
                        String token = tokenizer.nextToken();


                        if (token.equals(refinementName)) {
                            foundOne = true;
                            break;
                        }
                    }


                    if (foundOne) {
                        break;
                    }
                }
            }


            if (!foundOne) {
                Iterator transitions = immediateContainer.relationList()
                        .iterator();


                while (transitions.hasNext()) {
                    NamedObj other = (NamedObj) transitions.next();


                    if (other instanceof Transition) {
                        String refinementList = ((Transition) other).refinementName
                                .getExpression();


                        if (refinementList == null) {
                            continue;
                        }


                        tokenizer = new StringTokenizer(refinementList, ",");


                        while (tokenizer.hasMoreTokens()) {
                            String token = tokenizer.nextToken();


                            if (token.equals(refinementName)) {
                                foundOne = true;
                                break;
                            }
                        }


                        if (foundOne) {
                            break;
                        }
                    }
                }
            }


            String removal = "";


            if (!foundOne) {
                removal = "<deleteEntity name=\"" + refinementName + "\"/>";
            }


            String moml = "<group><entity name=\"" + state.getName(container)
                    + "\"><property name=\"refinementName\" value=\""
                    + newRefinements.toString() + "\"/></entity>" + removal
                    + "</group>";
            MoMLChangeRequest change = new MoMLChangeRequest(this, container,
                    moml);
            container.requestChange(change);
        }

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            MatchCallback callback) throws Exception {
        MoMLParser parser = new MoMLParser();
        TransformationRule rule = (TransformationRule) parser.parse(null,
                new File(ruleXMLFile).toURI().toURL());
        parser.reset();
        CompositeEntity host = (CompositeEntity) parser.parse(null, new File(
                hostXMLFile).toURI().toURL());


        GraphMatcher matcher = new GraphMatcher();
        if (callback != null) {
            matcher.setMatchCallback(callback);

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            Attribute attribute = (Attribute) attributes.next();
            _collectConstraints(attribute);
        }


        if (container instanceof CompositeEntity) {
            CompositeEntity composite = (CompositeEntity) container;


            for (Iterator entities = composite.entityList().iterator(); entities
                    .hasNext();) {
                _collectConstraints((Entity) entities.next());
            }
        }

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        if (includePorts && object instanceof Entity) {
            Entity entity = (Entity) object;
            collection.addAll((Collection<?>) entity.portList());
        }
        if (object instanceof CompositeEntity) {
            CompositeEntity entity = (CompositeEntity) object;
            if (includeEntities) {
                collection.addAll((Collection<?>) entity.entityList());
            }
            if (includeRelations) {
                collection.addAll((Collection<?>) entity.relationList());
            }
        }
        return collection;
    }

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            if (immediateContainer == null) {
                MessageHandler.error("Transition has no container!");
                return;
            }


            final CompositeEntity container = (CompositeEntity) immediateContainer
                    .getContainer();


            if (container == null) {
                MessageHandler.error("Transition container has no container!");
                return;
            }


            // Open a dialog to get the refinement name and class.
            Query query = new Query();
            String defaultName = container.uniqueName(transition.getName());
            query.addLine("Name", "Name", defaultName);


            // See whether the configuration offers transition refinements.
            Configuration configuration = ((FSMGraphController) getController())
                    .getConfiguration();
            Entity refinements = configuration
                    .getEntity("_transitionRefinements");


            // Default choices.
            String[] choiceClasses = { "ptolemy.domains.fsm.modal.TransitionRefinement" };
            String[] choiceNames = { "Default Refinement" };


            // Check the configuration to see whether the default is overridden.
            if (refinements instanceof CompositeEntity) {
                // There is a specification.
                List refinementList = ((CompositeEntity) refinements)
                        .entityList();
                choiceNames = new String[refinementList.size()];
                choiceClasses = new String[refinementList.size()];


                Iterator iterator = refinementList.iterator();
                int count = 0;


                while (iterator.hasNext()) {
                    Entity entity = (Entity) iterator.next();
                    choiceNames[count] = entity.getName();
                    choiceClasses[count++] = entity.getClass().getName();
                }
            }


            query
                    .addChoice("Class", "Class", choiceNames, choiceNames[0],
                            true);


            // FIXME: Need a frame owner for first arg.
            // Perhaps calling getController(), which returns a GraphController
            // will be a good start.
            ComponentDialog dialog = new ComponentDialog(null,
                    "Specify Refinement", query);


            if (!dialog.buttonPressed().equals("OK")) {
                return;
            }


            final String newName = query.getStringValue("Name");


            if (container.getEntity(newName) != null) {
                MessageHandler.error("There is already a refinement with name "
                        + newName + ".");
                return;
            }


            int choiceIndex = query.getIntValue("Class");
            String newClass = choiceClasses[choiceIndex];


            String currentRefinements = transition.refinementName
                    .getExpression();


            if ((currentRefinements == null) || currentRefinements.equals("")) {
                currentRefinements = newName;
            } else {
                currentRefinements = currentRefinements.trim() + ", " + newName;
            }


            String moml;


            // The MoML we create depends on whether the configuration
            // specified a set of prototype refinements.
            if (refinements instanceof CompositeEntity) {
                String choiceName = choiceNames[choiceIndex];
                Entity template = ((CompositeEntity) refinements)
                        .getEntity(choiceName);
                String templateDescription = template.exportMoML(newName);
                moml = "<group>" + templateDescription + "<relation name=\""
                        + transition.getName(container)
                        + "\"><property name=\"refinementName\" value=\""
                        + currentRefinements + "\"/></relation></group>";
            } else {
                moml = "<group><entity name=\"" + newName + "\" class=\""
                        + newClass + "\"/>" + "<relation name=\""
                        + transition.getName(container)
                        + "\"><property name=\"refinementName\" value=\""
                        + currentRefinements + "\"/></relation></group>";
            }


            MoMLChangeRequest change = new MoMLChangeRequest(this, container,
                    moml) {
                protected void _execute() throws Exception {
                    super._execute();


                    // Mirror the ports of the container in the refinement.
                    // Note that this is done here rather than as part of
                    // the MoML because we have set protected variables
                    // in the refinement to prevent it from trying to again
                    // mirror the changes in the container.
                    Entity entity = container.getEntity(newName);


                    // Get the initial port configuration from the container.
                    Iterator ports = container.portList().iterator();


                    while (ports.hasNext()) {
                        Port port = (Port) ports.next();


                        try {
                            // NOTE: This is awkward.
                            if (entity instanceof Refinement) {
                                ((Refinement) entity).setMirrorDisable(true);
                            } else if (entity instanceof ModalController) {
                                ((ModalController) entity)
                                        .setMirrorDisable(true);
                            }


                            Port newPort = entity.newPort(port.getName());


                            if (newPort instanceof RefinementPort
                                    && port instanceof IOPort) {
                                try {
                                    ((RefinementPort) newPort)
                                            .setMirrorDisable(true);


                                    if (((IOPort) port).isInput()) {
                                        ((RefinementPort) newPort)
                                                .setInput(true);
                                    }


                                    if (((IOPort) port).isOutput()) {
                                        ((RefinementPort) newPort)
                                                .setOutput(true);
                                    }


                                    if (((IOPort) port).isMultiport()) {
                                        ((RefinementPort) newPort)
                                                .setMultiport(true);
                                    }


                                    /* No longer needed since Yuhong modified
                                     * the type system to allow UNKNOWN. EAL
                                     if (port instanceof TypedIOPort
                                     && newPort instanceof TypedIOPort) {
                                     ((TypedIOPort)newPort).setTypeSameAs(
                                     (TypedIOPort)port);
                                     }
                                     */
                                } finally {
                                    ((RefinementPort) newPort)
                                            .setMirrorDisable(false);
                                }
                            }
                        } finally {
                            // NOTE: This is awkward.
                            if (entity instanceof Refinement) {
                                ((Refinement) entity).setMirrorDisable(false);
                            } else if (entity instanceof ModalController) {
                                ((ModalController) entity)
                                        .setMirrorDisable(false);
                            }
                        }
                    }


                    if (_configuration != null) {
                        // Look inside.
                        _configuration.openModel(entity);
                    }
                }
            };


            container.requestChange(change);
        }

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                // If the above code did not find an effigy to put
                // the new effigy within, then put it into the
                // directory directly or the specified container.
                if (!isContainerSet) {
                    if (container == null) {
                        CompositeEntity directory = getDirectory();
                        effigy.setName(directory.uniqueName(entity.getName()));
                        effigy.setContainer(directory);
                    } else {
                        effigy.setName(container.uniqueName(entity.getName()));
                        effigy.setContainer(container);
                    }

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            }


            Transition transition = (Transition) target;


            // Check that all these containers exist.
            CompositeEntity immediateContainer = (CompositeEntity) transition
                    .getContainer();


            if (immediateContainer == null) {
                MessageHandler.error("Transition has no container!");
                return;
            }


            final CompositeEntity container = (CompositeEntity) immediateContainer
                    .getContainer();


            if (container == null) {
                MessageHandler.error("Transition container has no container!");
                return;
            }


            TypedActor[] refinements;


            try {
                refinements = transition.getRefinement();
            } catch (Exception ex) {
                MessageHandler.error("Invalid refinements.", ex);
                return;
            }


            if ((refinements == null) || (refinements.length < 1)) {
                MessageHandler.error("No refinements to remove.");
                return;
            }


            String[] choices = new String[refinements.length];


            for (int i = 0; i < refinements.length; i++) {
                choices[i] = ((Nameable) refinements[i]).getName();
            }


            // Open a dialog to get the refinement name and class.
            Query query = new Query();
            query.addChoice("Refinement", "Refinement", choices, choices[0],
                    false);


            // FIXME: Need a frame owner for first arg.
            // Perhaps calling getController(), which returns a GraphController
            // will be a good start.
            ComponentDialog dialog = new ComponentDialog(null,
                    "Specify Refinement", query);


            if (!dialog.buttonPressed().equals("OK")) {
                return;
            }


            String refinementName = query.getStringValue("Refinement");
            StringBuffer newRefinements = new StringBuffer();
            String currentRefinements = transition.refinementName
                    .getExpression();
            StringTokenizer tokenizer = new StringTokenizer(currentRefinements,
                    ",");


            while (tokenizer.hasMoreTokens()) {
                String token = tokenizer.nextToken();


                if (!token.trim().equals(refinementName)) {
                    if (newRefinements.length() > 0) {
                        newRefinements.append(", ");
                    }


                    newRefinements.append(token.trim());
                }
            }


            // Check to see whether any other transition has
            // this refinment, and if not, remove it from its container.
            Iterator transitions = immediateContainer.relationList().iterator();
            boolean foundOne = false;


            while (transitions.hasNext()) {
                NamedObj other = (NamedObj) transitions.next();


                if ((other != transition) && other instanceof Transition) {
                    String refinementList = ((Transition) other).refinementName
                            .getExpression();


                    if (refinementList == null) {
                        continue;
                    }


                    tokenizer = new StringTokenizer(refinementList, ",");


                    while (tokenizer.hasMoreTokens()) {
                        String token = tokenizer.nextToken();


                        if (token.equals(refinementName)) {
                            foundOne = true;
                            break;
                        }
                    }


                    if (foundOne) {
                        break;
                    }
                }
            }


            if (!foundOne) {
                Iterator states = immediateContainer.entityList().iterator();


                while (states.hasNext()) {
                    NamedObj other = (NamedObj) states.next();


                    if (other instanceof State) {
                        String refinementList = ((State) other).refinementName
                                .getExpression();


                        if (refinementList == null) {
                            continue;
                        }


                        tokenizer = new StringTokenizer(refinementList, ",");


                        while (tokenizer.hasMoreTokens()) {
                            String token = tokenizer.nextToken();


                            if (token.equals(refinementName)) {
                                foundOne = true;
                                break;
                            }
                        }


                        if (foundOne) {
                            break;
                        }
                    }
                }
            }


            String removal = "";


            if (!foundOne) {
                removal = "<deleteEntity name=\"" + refinementName + "\"/>";
            }


            String moml = "<group><relation name=\""
                    + transition.getName(container)
                    + "\"><property name=\"refinementName\" value=\""
                    + newRefinements.toString() + "\"/></relation>" + removal
                    + "</group>";
            MoMLChangeRequest change = new MoMLChangeRequest(this, container,
                    moml);
            container.requestChange(change);
        }

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