Examples of ptolemy.moml.MoMLChangeRequest

ptolemy.moml.MoMLChangeRequest
A mutation request specified in MoML. This class provides the preferred mechanism for implementing mutations on a model while it is executing. To use it, create an instance of this class, specifying MoML code as an argument to the constructor. Then queue the instance of this class with a composite entity by calling its requestChange() method.
If a context is given to the constructor, then the MoML will be executed in that context. If that context has other objects that defer their MoML definitions to it (i.e., it is a class definition and there are instances of the class), then the MoML will also be executed in the context of those objects that defer to it. Thus, the change to a class will propagate to instances. If the context is (deeply) contained by another object that has objects that defer their MoML definitions to it, then the changes are also propagated to those objects. Thus, even when class definitions are nested within class definitions, a change within a class definition will propagate to all instances of the class(es).
The parser used to implement the change will be the parser contained by a ParserAttribute of the top-level element of the context. If no context is given, or there is no ParserAttribute in its top level, then a new parser is created, and a new ParserAttribute is placed in the top level.
Note that if a context is specified that is above a class definition, and a change within the class definition is made by referencing the contents of the class definition using dotted names, then the change will not propagate. Thus, changes should be made in the most specific context (lowest level in the hierarchy) possible. @author Edward A. Lee @version $Id: MoMLChangeRequest.java,v 1.71 2006/02/27 22:24:53 cxh Exp $ @since Ptolemy II 1.0 @Pt.ProposedRating Yellow (eal) @Pt.AcceptedRating Red (neuendor)


            moml.append("</");
            moml.append(elementName);
            moml.append(">");


            MoMLChangeRequest request = new MoMLChangeRequest(this, // originator
                    parent, // context
                    moml.toString(), // MoML code
                    null); // base


            request.addChangeListener(this);
            request.setUndoable(true);
            parent.requestChange(request);
        }
    }

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            }
        }


        if (moml.length() > 0) {
            String momlUpdate = "<group>" + moml.toString() + "</group>";
            MoMLChangeRequest request = new MoMLChangeRequest(this, _model,
                    momlUpdate);
            request.setUndoable(true);
            request.setPersistent(false);
            _debug("Solver.annotateGraph moml " + momlUpdate);
            _model.requestChange(request);
        }
    }

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            String moml = "<" + elementName + " name=\"" + deleteObj.getName()
                    + "\"/>\n";


            // Make the request in the context of the container.
            NamedObj container = deleteObj.getContainer();
            MoMLChangeRequest request = new MoMLChangeRequest(
                    FSMGraphModel.this, container, moml);
            request.setUndoable(true);
            request.addChangeListener(new ChangeListener() {
                public void changeFailed(ChangeRequest change,
                        Exception exception) {
                    // If we fail, then issue structureChanged.
                    dispatchGraphEvent(new GraphEvent(eventSource,
                            GraphEvent.STRUCTURE_CHANGED, getRoot()));
                }


                public void changeExecuted(ChangeRequest change) {
                    // If we succeed, then issue structureChanged, since
                    // this is likely connected to something.
                    dispatchGraphEvent(new GraphEvent(eventSource,
                            GraphEvent.STRUCTURE_CHANGED, getRoot()));
                }
            });
            request.setUndoable(true);
            container.requestChange(request);
        }

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                moml = "<port name=\"" + rootName + "\" class=\"" + className
                        + "\">" + "<property name=\"input\"/></port>";
            }
        }
        if (moml != null) {
            MoMLChangeRequest request = new MoMLChangeRequest(this,
                    _iconContainer, moml) {
                protected void _execute() throws Exception {
                    super._execute();
                    NamedObj sample = null;
                    String name = rootName;

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            Entity patternEntity, Entity replacementEntity, Entity hostEntity) {
        if (isNameEnabled()) {
            NamedObj parent = hostEntity.getContainer();
            String moml = "<entity name=\"" + hostEntity.getName()
                    + "\"><rename name=\"" + _name + "\"/></entity>";
            return new MoMLChangeRequest(this, parent, moml, null);
        } else {
            return null;
        }
    }

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            String moml = "<" + elementName + " name=\"" + deleteObj.getName()
                    + "\"/>\n";


            // Make the request in the context of the container.
            NamedObj container = deleteObj.getContainer();
            MoMLChangeRequest request = new MoMLChangeRequest(
                    FSMGraphModel.this, container, moml);
            request.addChangeListener(new ChangeListener() {
                public void changeFailed(ChangeRequest change,
                        Exception exception) {
                    // If we fail, then issue structureChanged.
                    dispatchGraphEvent(new GraphEvent(eventSource,
                            GraphEvent.STRUCTURE_CHANGED, getRoot()));
                }


                public void changeExecuted(ChangeRequest change) {
                    // If we succeed, then issue structureChanged, since
                    // this is likely connected to something.
                    dispatchGraphEvent(new GraphEvent(eventSource,
                            GraphEvent.STRUCTURE_CHANGED, getRoot()));
                }
            });
            request.setUndoable(true);
            container.requestChange(request);
        }

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            expression = _attributeValue.get();
        }
        String moml = "<property name=\"" + _attributeName + "\" class=\""
                + attributeClass + "\" value=\""
                + StringUtilities.escapeForXML(expression) + "\"/>";
        return new MoMLChangeRequest(this, hostEntity, moml, null);
    }

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                    if (relation == hostLinkedObject) {
                        moml = _getLinkMoML(host, relation);
                    } else {
                        moml = _getLinkMoML(hostLinkedObject, relation);
                    }
                    MoMLChangeRequest request = new MoMLChangeRequest(this,
                            hostContainer, moml);
                    request.execute();
                }
            }


            if (replacement instanceof ComponentPort
                    && host instanceof ComponentPort) {
                ComponentPort replacementComponentPort = (ComponentPort) replacement;
                ComponentPort hostComponentPort = (ComponentPort) host;
                for (Object replacementRelationObject : replacementComponentPort
                        .insideRelationList()) {
                    Relation replacementRelation = (Relation) replacementRelationObject;
                    Relation hostRelation = (Relation) _replacementToHost
                            .get(replacementRelation);
                    if (!hostComponentPort.insideRelationList().contains(
                            hostRelation)) {
                        // There is no link between hostPort and hostRelation,
                        // so create a new link.
                        NamedObj hostContainer = hostRelation.getContainer();
                        String moml = _getLinkMoML(host, hostRelation);
                        MoMLChangeRequest request = new MoMLChangeRequest(this,
                                hostContainer, moml);
                        request.execute();
                    }
                }
            }
        }
    }

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                    continue;
                }


                String moml = "<group name=\"auto\">" + attribute.exportMoML()
                        + "</group>";
                MoMLChangeRequest request = new MoMLChangeRequest(this, host,
                        moml);
                request.execute();
            }
        }


        // Copy entities and relations.
        Collection<?> children = GTTools.getChildren(replacement, false, false,
                true, true);
        for (Object childObject : children) {
            NamedObj child = (NamedObj) childObject;
            NamedObj hostChild = _replacementToHost.get(child);
            String moml = null;
            if (hostChild == null) {
                moml = _getMoML(child);
            } else {
                if (hostChild.getContainer() != host) {
                    moml = _moml.get(child);
                }
            }
            if (moml != null && !moml.equals("")) {
                moml = "<group name=\"auto\">\n" + moml + "</group>";
                MoMLChangeRequest request = new MoMLChangeRequest(this, host,
                        moml);
                request.execute();
                hostChild = _getNewlyAddedObject(host, child.getClass());
                _addReplacementToHostEntries(hostChild);
            }
            if (hostChild != null) {
                _addObjects(child, hostChild);

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                Relation relation = (Relation) relationObject;
                List<?> linkedObjects = relation.linkedObjectsList();
                if (linkedObjects.size() == 1) {
                    String moml = "<deleteRelation name=\""
                            + relation.getName() + "\"/>";
                    MoMLChangeRequest request = new MoMLChangeRequest(this,
                            relation.getContainer(), moml);
                    request.execute();
                }
            }


            // Combine relations if possible.
            relations = GTTools.getChildren(host, false, false, false, true);
            for (Object relationObject : relations) {
                Relation relation = (Relation) relationObject;
                List<?> vertices = relation.attributeList(Vertex.class);
                if (vertices.isEmpty()) {
                    List<?> linkedObjects = relation.linkedObjectsList();
                    if (linkedObjects.size() == 2) {
                        NamedObj head = (NamedObj) linkedObjects.get(0);
                        NamedObj tail = (NamedObj) linkedObjects.get(1);
                        if (head instanceof Relation
                                || tail instanceof Relation) {
                            String moml = "<deleteRelation name=\""
                                    + relation.getName() + "\"/>";
                            MoMLChangeRequest request = new MoMLChangeRequest(
                                    this, relation.getContainer(), moml);
                            request.execute();


                            if (tail instanceof Relation) {
                                moml = _getLinkMoML(head, (Relation) tail);
                                request = new MoMLChangeRequest(this, tail
                                        .getContainer(), moml);
                                request.execute();
                            } else {
                                moml = _getLinkMoML(tail, (Relation) head);
                                request = new MoMLChangeRequest(this, head
                                        .getContainer(), moml);
                                request.execute();
                            }
                        }
                    } else if (linkedObjects.size() > 2) {
                        double[] location = _getBestLocation(relation
                                .linkedObjectsList());
                        String moml = "<group name=\"auto\">"
                                + "<vertex name=\"vertex\" value=\"["
                                + location[0] + ", " + location[1] + "]\"/>"
                                + "</group>";
                        MoMLChangeRequest request = new MoMLChangeRequest(this,
                                relation, moml);
                        request.execute();
                    }
                }
            }
        }

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