Examples with DEdge org.openntf.domino.graph2.impl.DEdge used on opensource projects

Example 6 with DEdge

use of org.openntf.domino.graph2.impl.DEdge in project org.openntf.domino by OpenNTF.

the class JsonFrameAdapter method getJsonProperties.

@Override
public Iterator<String> getJsonProperties() {
    // System.out
    // .println("TEMP DEBUG getting Json properties list for a frame of type
    // "
    // + frame_.getClass().getName());
    List<String> result = new ArrayList<String>();
    // if (getActionsParam() != null) {
    // for (CharSequence cis : getActionsParam()) {
    // result.add("%" + cis.toString());
    // }
    // }
    result.add("@id");
    result.add("@type");
    result.add("@editable");
    if (getIncludeDebug()) {
        result.add("@debug");
    }
    if (getFrame() instanceof VertexFrame) {
        result.add("@versions");
    }
    Collection<CharSequence> props = getProperties();
    if (props == null) {
        // NoteCoordinate nc = (NoteCoordinate)
        // ((VertexFrame)frame_).asVertex().getId();
        props = new ArrayList<CharSequence>();
        props.addAll(getGetters().keySet());
        Class<?> klazz = frame_.getClass();
        boolean incl = isInclusive(klazz);
        // }
        if (props == null || props.size() < 5 || incl) {
            if (frame_ instanceof DVertexFrame) {
                try {
                    Set<String> raw = ((DVertexFrame) frame_).asVertex().getPropertyKeys();
                    // Set<CharSequence> raw = ((DVertexFrame) frame_).asMap().keySet();
                    // System.out.println("TEMP DEBUG raw vertex has " + raw.size() + " properties");
                    props.addAll(CaseInsensitiveString.toCaseInsensitive(raw));
                } catch (Throwable t) {
                    Throwable cause = t.getCause();
                    if (cause != null) {
                        System.err.println("Exception trying to process a frame of type " + DGraphUtils.findInterface(frame_) + " resulting in a " + cause.getClass().getSimpleName());
                        cause.printStackTrace();
                        try {
                            throw cause;
                        } catch (Throwable e) {
                            e.printStackTrace();
                        }
                    }
                }
            } else if (frame_ instanceof DEdgeFrame) {
            // Set<CharSequence> raw = ((DEdgeFrame)
            // frame_).asMap().keySet();
            // props.addAll(CaseInsensitiveString.toCaseInsensitive(raw));
            }
        }
    }
    for (CharSequence cis : props) {
        result.add(cis.toString());
    // System.out.println("Adding " + cis.toString());
    }
    Object frame = getFrame();
    if (frame instanceof VertexFrame && getIncludeEdges()) {
        result.add("@edges");
    }
    if (getIncludeActions()) {
        result.add("@actions");
    }
    if (frame instanceof VertexFrame && getIncludeCounts()) {
        for (CaseInsensitiveString key : getCounters().keySet()) {
            result.add("@counts" + key.toString());
        }
    }
    if (frame instanceof VertexFrame) {
        Vertex v = ((VertexFrame) frame).asVertex();
        if (v instanceof DProxyVertex) {
            result.add("@proxyid");
        }
    }
    if (frame instanceof VertexFrame && getLabels() != null) {
        for (CharSequence cis : getLabels()) {
            result.add("#" + cis.toString());
        }
    }
    if (frame instanceof EdgeFrame) {
        result.add("@in");
        result.add("@out");
        result.add("@label");
    }
    if (frame instanceof ViewVertex) {
        result.add("@columninfo");
    }
    // }
    if (frame instanceof ViewVertex.Contains) {
        Edge edge = ((ViewVertex.Contains) frame).asEdge();
        if (edge instanceof DEdge) {
            result.addAll(((DEdge) edge).getDelegate().keySet());
        }
    }
    Collection<CharSequence> hideProps = getHideProperties();
    if (hideProps != null && !hideProps.isEmpty()) {
        for (CharSequence cis : hideProps) {
            result.remove(cis.toString());
        }
    }
    // System.out.println("TEMP DEBUG getting properties for a " + DGraphUtils.getInterfaceList(frame) + " -- " + Strings.getString(result, ","));
    return result.iterator();
}

Example 7 with DEdge

use of org.openntf.domino.graph2.impl.DEdge in project org.openntf.domino by OpenNTF.

the class JsonFrameAdapter method getJsonProperty.

@SuppressWarnings("unlikely-arg-type")
@Override
public Object getJsonProperty(final String paramKey) {
    Object result = null;
    Object frame = getFrame();
    if (frame != null) {
        CaseInsensitiveString key = new CaseInsensitiveString(paramKey);
        if (key.equals("@id")) {
            if (frame instanceof VertexFrame) {
                Vertex v = ((VertexFrame) frame).asVertex();
                // if (v instanceof DProxyVertex) {
                // result = ((DProxyVertex)v).getProxyDelegate().getId().toString();
                // } else {
                result = String.valueOf(v.getId());
            // }
            } else if (frame instanceof EdgeFrame) {
                result = String.valueOf(((EdgeFrame) frame).asEdge().getId());
            }
        } else if (key.equals("@editable")) {
            if (frame instanceof VertexFrame) {
                result = ((DVertex) ((VertexFrame) frame).asVertex()).isEditable();
            } else if (frame instanceof EdgeFrame) {
                result = ((DEdge) ((EdgeFrame) frame).asEdge()).isEditable();
            }
        } else if (key.equals("@proxyid")) {
            // System.out.println("TEMP DEBUG @proxyid requested");
            if (frame instanceof VertexFrame) {
                Vertex v = ((VertexFrame) frame).asVertex();
                if (v instanceof DProxyVertex) {
                    result = ((DProxyVertex) v).getProperty(DProxyVertex.PROXY_ITEM, String.class);
                }
            }
        } else if (key.equals("@versions")) {
            if (frame instanceof VertexFrame) {
                try {
                    Vertex v = ((VertexFrame) frame).asVertex();
                    Object id = v.getId();
                    Session sess = Factory.getSession(SessionType.CURRENT);
                    Document doc = sess.getDocumentByMetaversalID(id.toString());
                    if (doc != null) {
                        Database db = doc.getAncestorDatabase();
                        List<DocumentBackupContributor> contributors = Factory.findApplicationServices(DocumentBackupContributor.class);
                        if (contributors != null) {
                            for (DocumentBackupContributor contributor : contributors) {
                                Optional<List<Date>> dates = contributor.getRevisionDates(db, doc.getUniversalID());
                                if (dates.isPresent()) {
                                    result = dates.get();
                                    break;
                                }
                            }
                        }
                    }
                } catch (Throwable t) {
                    t.printStackTrace();
                }
            }
            if (result == null) {
                List<String> resultList = new ArrayList<String>();
                resultList.add("N/A");
                result = resultList;
            }
        } else if (key.equals("@debug")) {
            Map<String, String> debugMap = new LinkedHashMap<String, String>();
            debugMap.put("frameIdentity", String.valueOf(System.identityHashCode(this)));
            if (frame instanceof VertexFrame) {
                Vertex v = ((VertexFrame) frame).asVertex();
                debugMap.put("vertexIdentity", String.valueOf(System.identityHashCode(v)));
            } else if (frame instanceof EdgeFrame) {
                Edge e = ((EdgeFrame) frame).asEdge();
                debugMap.put("vertexIdentity", String.valueOf(System.identityHashCode(e)));
            }
            result = debugMap;
        } else if (key.equals("@type")) {
            if (frame instanceof VertexFrame) {
                result = type_;
            } else if (frame instanceof EdgeFrame) {
                result = type_;
            }
        } else if (key.equals("@label")) {
            if (frame instanceof EdgeFrame) {
                Edge e = ((EdgeFrame) frame).asEdge();
                result = e.getLabel();
            }
        } else if (key.equals("@in") && frame instanceof EdgeFrame) {
            if (getInProperties() == null) {
                // why not just make a frame adapter with the vertex?
                // because that's another I/O operation. We already have the
                // information needed to
                DEdge dedge = (DEdge) ((EdgeFrame) frame).asEdge();
                Map<String, String> minProps = new LinkedHashMap<String, String>();
                minProps.put("@id", dedge.getVertexId(Direction.IN).toString());
                Class<?> inType = graph_.getTypeRegistry().getInType(type_);
                if (inType == null) {
                    minProps.put("@type", "Vertex");
                } else {
                    minProps.put("@type", inType.getName());
                }
                result = minProps;
            } else {
                ParamMap inMap = new ParamMap();
                inMap.put(Parameters.PROPS, CaseInsensitiveString.toStrings(getInProperties()));
                if (getIncludeEdges()) {
                    inMap.put(Parameters.EDGES, EMPTY_STRINGS);
                }
                if (getIncludeCounts()) {
                    inMap.put(Parameters.COUNTS, EMPTY_STRINGS);
                }
                Method inMethod = graph_.getTypeRegistry().getIn(type_);
                if (inMethod != null) {
                    try {
                        Object raw = inMethod.invoke(frame, (Object[]) null);
                        if (raw instanceof VertexFrame) {
                            VertexFrame inFrame = (VertexFrame) raw;
                            result = new JsonFrameAdapter(graph_, inFrame, inMap, isCollectionRoute_);
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                } else {
                    System.out.println("In method not found for type: " + type_.getName());
                }
            }
        } else if (key.equals("@out") && frame instanceof EdgeFrame) {
            if (getOutProperties() == null) {
                // why not just make a frame adapter with the vertex?
                // because that's another I/O operation. We already have the
                // information needed to
                DEdge dedge = (DEdge) ((EdgeFrame) frame).asEdge();
                Map<String, String> minProps = new LinkedHashMap<String, String>();
                minProps.put("@id", dedge.getVertexId(Direction.OUT).toString());
                Class<?> outType = graph_.getTypeRegistry().getOutType(type_);
                if (outType == null) {
                    minProps.put("@type", "Vertex");
                } else {
                    minProps.put("@type", outType.getName());
                }
                result = minProps;
            } else {
                ParamMap outMap = new ParamMap();
                outMap.put(Parameters.PROPS, CaseInsensitiveString.toStrings(getOutProperties()));
                if (getIncludeEdges()) {
                    outMap.put(Parameters.EDGES, EMPTY_STRINGS);
                }
                if (getIncludeCounts()) {
                    outMap.put(Parameters.COUNTS, EMPTY_STRINGS);
                }
                Method outMethod = graph_.getTypeRegistry().getOut(type_);
                if (outMethod != null) {
                    try {
                        Object raw = outMethod.invoke(frame, (Object[]) null);
                        if (raw instanceof VertexFrame) {
                            VertexFrame outFrame = (VertexFrame) raw;
                            result = new JsonFrameAdapter(graph_, outFrame, outMap, isCollectionRoute_);
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
        } else if (key.equals("@edges")) {
            Map<String, Integer> edgeCounts = new LinkedHashMap<String, Integer>();
            Set<CaseInsensitiveString> counterKeys = getCounters().keySet();
            // " edge types");
            for (CaseInsensitiveString label : counterKeys) {
                Method crystal = getCounters().get(label);
                if (crystal != null) {
                    // key);
                    try {
                        Object raw = crystal.invoke(getFrame(), (Object[]) null);
                        if (raw instanceof Integer) {
                            edgeCounts.put(label.toString(), (Integer) raw);
                        } else {
                        }
                    } catch (IllegalArgumentException iae) {
                        System.out.println("TEMP DEBUG Attempting to invoke " + crystal.getDeclaringClass().getName() + "." + crystal.getName() + " on an " + getFrame().getClass().getName() + " (" + DGraphUtils.getInterfaceList(getFrame()) + ")");
                        throw new RuntimeException(iae);
                    } catch (Exception e) {
                        throw new RuntimeException(e);
                    }
                } else {
                // System.out.println("TEMP DEBUG No method found for
                // key "
                // + key);
                }
            }
            result = edgeCounts;
        } else if (key.equals("@actions")) {
            List<CaseInsensitiveString> actionList = new ArrayList<CaseInsensitiveString>();
            Set<CaseInsensitiveString> actionNames = getActions().keySet();
            for (CaseInsensitiveString name : actionNames) {
                actionList.add(name);
            }
            result = actionList;
        } else if (key.startsWith("@counts")) {
            String label = key.toString().substring("@counts".length());
            Method crystal = getCounters().get(new CaseInsensitiveString(label));
            if (crystal != null) {
                try {
                    Object raw = crystal.invoke(getFrame(), (Object[]) null);
                    if (raw instanceof Integer) {
                        result = raw;
                    } else {
                    // System.out.println("TEMP DEBUG Invokation of a
                    // counter resulted in a "
                    // + (raw == null ? "null" :
                    // raw.getClass().getName()));
                    }
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
            } else {
            // System.out.println("TEMP DEBUG No method found for key "
            // + label);
            }
        } else if (key.equals("@columninfo")) {
            if (frame instanceof ViewVertex) {
                Map<String, String> columnInfo = new LinkedHashMap<String, String>();
                if (frame instanceof ViewVertex) {
                    View view = ((ViewVertex) frame).asView();
                    if (view != null) {
                        try {
                            for (ViewColumn column : view.getColumns()) {
                                String progName = column.getItemName();
                                String title = column.getTitle();
                                columnInfo.put(progName, title);
                            }
                        } catch (Throwable t) {
                            columnInfo.put("@error", "Unable to access column information");
                        }
                    }
                } else {
                    System.err.println("Frame is not a ViewVertex. It is " + DGraphUtils.findInterface(frame));
                }
                return columnInfo;
            }
        } else if (key.equals("@viewinfo")) {
            if (frame instanceof DbInfoVertex) {
                List viewInfo = ((DbInfoVertex) frame).getViewInfo();
                return viewInfo;
            }
        } else if (key.startsWith("#") && frame instanceof VertexFrame) {
            CharSequence label = key.subSequence(1, key.length());
            Method crystal = getIncidences().get(label);
            if (crystal != null) {
                try {
                    result = crystal.invoke(frame, (Object[]) null);
                } catch (IllegalArgumentException iae) {
                    throw new RuntimeException(iae.getMessage() + " where the expect call is " + crystal.getDeclaringClass().getName() + "." + crystal.getName() + " but the object is " + DGraphUtils.getInterfaceList(frame));
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
                if (result != null) {
                    if (!(result instanceof Iterable)) {
                        if (result instanceof EdgeFrame) {
                            Vertex v = ((VertexFrame) frame).asVertex();
                            List<Edge> edges = new org.openntf.domino.graph2.impl.DEdgeList((DVertex) v);
                            edges.add(((EdgeFrame) result).asEdge());
                            result = new FramedEdgeList(getGraph(), ((VertexFrame) frame).asVertex(), edges, crystal.getReturnType());
                        }
                    }
                    if (getIncludeVertices()) {
                        // EdgeList into VertexList");
                        if (result instanceof DEdgeList) {
                            result = ((DEdgeList) result).toVertexList();
                        } else if (result instanceof FramedEdgeList) {
                            result = ((FramedEdgeList<?>) result).toVertexList();
                        } else {
                            System.err.println("TEMP DEBUG: Expected a DEdgeList but got a " + result.getClass().getName());
                        }
                    }
                    if (getFilterKeys() != null && !isCollectionRoute_) {
                        if (result instanceof DEdgeList) {
                            // System.out.println("TEMP DEBUG: Applying
                            // a filter to a DEdgeList");
                            List<CharSequence> filterKeys = getFilterKeys();
                            List<CharSequence> filterValues = getFilterValues();
                            for (int i = 0; i < filterKeys.size(); i++) {
                                result = ((DEdgeList) result).applyFilter(filterKeys.get(i).toString(), filterValues.get(i).toString());
                            }
                        } else if (result instanceof DVertexList) {
                            // System.out.println("TEMP DEBUG: Applying
                            // a filter to a DVertexList");
                            List<CharSequence> filterKeys = getFilterKeys();
                            List<CharSequence> filterValues = getFilterValues();
                            for (int i = 0; i < filterKeys.size(); i++) {
                                result = ((DVertexList) result).applyFilter(filterKeys.get(i).toString(), filterValues.get(i).toString());
                            }
                        } else if (result instanceof FramedEdgeList) {
                            // System.out.println("TEMP DEBUG: Applying
                            // a filter to a FramedEdgeList");
                            List<CharSequence> filterKeys = getFilterKeys();
                            List<CharSequence> filterValues = getFilterValues();
                            for (int i = 0; i < filterKeys.size(); i++) {
                                result = ((FramedEdgeList<?>) result).applyFilter(filterKeys.get(i).toString(), filterValues.get(i).toString());
                            }
                        } else if (result instanceof FramedVertexList) {
                            List<CharSequence> filterKeys = getFilterKeys();
                            List<CharSequence> filterValues = getFilterValues();
                            for (int i = 0; i < filterKeys.size(); i++) {
                                String curkey = filterKeys.get(i).toString();
                                String curvalue = filterValues.get(i).toString();
                                // System.out.println("TEMP DEBUG:
                                // Applying a filter to a
                                // FramedVertexList - "
                                // + curkey + ":" + curvalue);
                                result = ((FramedVertexList<?>) result).applyFilter(curkey, curvalue);
                            }
                        }
                    }
                    if (getStartsValues() != null) {
                        // + result.getClass().getName());
                        if (result instanceof DEdgeEntryList) {
                            ((DEdgeEntryList) result).initEntryList(getStartsValues());
                        } else if (result instanceof FramedEdgeList) {
                            ((FramedEdgeList) result).applyFilter("lookup", getStartsValues());
                        }
                    }
                    if (getFilterValues() != null && getFilterKeys() == null) {
                        if (result instanceof DEdgeEntryList) {
                            // System.out.println("TEMP DEBUG filtering a
                            // DEdgeEntryList");
                            ((DEdgeEntryList) result).filterEntryList(getFilterValues());
                        } else if (result instanceof FramedEdgeList) {
                            ((FramedEdgeList) result).applyFilter("filter", getFilterValues());
                        }
                    }
                    if (getOrderBys() != null) {
                        if (result instanceof FramedEdgeList) {
                            // System.out.println("Ordering an edge
                            // list");
                            result = ((FramedEdgeList<?>) result).sortBy(getOrderBys(), getDescending());
                        } else if (result instanceof FramedVertexList) {
                            // System.out.println("Ordering a vertex
                            // list");
                            result = ((FramedVertexList<?>) result).sortBy(getOrderBys(), getDescending());
                        }
                    }
                    if (getStart() >= 0) {
                        // + " for a " + result.getClass().getName());
                        if (getCount() > 0) {
                            int end = getStart() + getCount();
                            if (result instanceof FramedEdgeList) {
                                // System.out.println("TEMP DEBUG Sublisting
                                // a FramedEdgeList...");
                                int size = ((FramedEdgeList<?>) result).size();
                                result = ((FramedEdgeList<?>) result).subList(getStart(), (end > size ? size : end));
                            } else if (result instanceof FramedVertexList) {
                                int size = ((FramedVertexList<?>) result).size();
                                result = ((FramedVertexList<?>) result).subList(getStart(), (end > size ? size : end));
                            } else if (result instanceof DEdgeEntryList) {
                                // System.out.println("TEMP DEBUG Sublisting
                                // a DEdgeEntryList...");
                                int size = ((DEdgeEntryList) result).size();
                                result = ((DEdgeEntryList) result).subList(getStart(), (end > size ? size : end));
                            }
                        } else {
                            if (result instanceof FramedEdgeList) {
                                result = ((FramedEdgeList<?>) result).subList(getStart(), ((FramedEdgeList<?>) result).size());
                            } else if (result instanceof FramedVertexList) {
                                result = ((FramedVertexList<?>) result).subList(getStart(), ((FramedVertexList<?>) result).size());
                            } else if (result instanceof DEdgeEntryList) {
                                // System.out.println("TEMP DEBUG Sublisting
                                // a DEdgeEntryList...");
                                result = ((DEdgeEntryList) result).subList(getStart() + 1, ((DEdgeEntryList) result).size());
                            }
                        }
                    }
                    // }
                    if (result instanceof FramedVertexList) {
                        ParamMap listMap = new ParamMap();
                        if (getIncludeEdges()) {
                            listMap.put(Parameters.EDGES, EMPTY_STRINGS);
                        }
                        if (getIncludeCounts()) {
                            listMap.put(Parameters.COUNTS, EMPTY_STRINGS);
                        }
                        listMap.put(Parameters.PROPS, CaseInsensitiveString.toStrings(this.getProperties()));
                        listMap.put(Parameters.HIDEPROPS, CaseInsensitiveString.toStrings(this.getHideProperties()));
                        result = new JsonFrameListAdapter(getGraph(), (FramedVertexList<?>) result, listMap, isCollectionRoute_);
                    }
                }
            } else {
            // NTF actually, this is a perfectly normal outcome.
            // System.err.println("No edge method found for label " +
            // label + " in a VertexFrame of type "
            // + DGraphUtils.findInterface(frame) + " with id "
            // + ((VertexFrame) frame).asVertex().getId());
            }
        } else {
            // System.out.println("TEMP DEBUG finding property " + key);
            Method crystal = getGetters().get(key);
            if (crystal != null) {
                try {
                    result = crystal.invoke(frame, (Object[]) null);
                } catch (UserAccessException uae) {
                    throw uae;
                } catch (Throwable t) {
                    if (frame instanceof EdgeFrame) {
                        result = ((EdgeFrame) frame).asEdge().getProperty(paramKey);
                    } else if (frame instanceof VertexFrame) {
                        result = ((VertexFrame) frame).asVertex().getProperty(paramKey);
                    } else {
                        System.err.println("Trying to get property " + paramKey + " from an object " + frame.getClass().getName());
                    }
                }
            } else {
                if (frame instanceof ViewVertex.Contains) {
                    result = ((EdgeFrame) frame).asEdge().getProperty(paramKey);
                } else if (frame instanceof VertexFrame) {
                    result = ((VertexFrame) frame).asVertex().getProperty(paramKey);
                } else if (frame instanceof EdgeFrame) {
                    result = ((EdgeFrame) frame).asEdge().getProperty(paramKey);
                } else {
                    System.err.println("No method found for key " + paramKey);
                }
            }
        }
    } else {
        System.err.println("Unable to get property " + paramKey + " on a null object");
    }
    return result;
}

Example 8 with DEdge

use of org.openntf.domino.graph2.impl.DEdge in project org.openntf.domino by OpenNTF.

the class JsonFrameAdapter method toVertexFrame.

public static VertexFrame toVertexFrame(final DFramedTransactionalGraph graph, final Edge edge, final Vertex source) {
    VertexFrame result = null;
    Vertex other = null;
    if (edge instanceof DEdge) {
        try {
            other = ((DEdge) edge).getOtherVertex(source);
        } catch (Throwable t) {
            t.printStackTrace();
        }
    } else {
        System.out.println("TEMP DEBUG edge is actually a " + edge.getClass().getName());
    }
    result = (VertexFrame) graph.frame(other, null);
    return result;
}

Example 9 with DEdge

use of org.openntf.domino.graph2.impl.DEdge in project org.openntf.domino by OpenNTF.

the class DFramedTransactionalGraph method addEdge.

// public <F> F addEdge(final Object id, final Vertex outVertex, final Vertex inVertex, final String label) {
// return (F) super.addEdge(id, outVertex, inVertex, label);
// }
@Override
public <F> F addEdge(final Object id, final Vertex outVertex, final Vertex inVertex, final String label, final Direction direction, final Class<F> kind) {
    if (id != null && id instanceof NoteCoordinate) {
        Object cacheChk = getElement(id, kind);
        if (cacheChk != null) {
            return (F) cacheChk;
        }
    }
    DGraph base = (DGraph) this.getBaseGraph();
    org.openntf.domino.graph2.DElementStore store = null;
    if (id instanceof NoteCoordinate) {
        store = base.findElementStore(id);
    } else {
        String typeid = getTypedId(id);
        if (typeid == null) {
            store = base.findElementStore(kind);
        } else {
            store = base.findElementStore(typeid);
        }
    }
    Edge edge = store.addEdge(id);
    ((DEdge) edge).setLabel(label);
    ((DEdge) edge).setInVertex(inVertex);
    ((DEdge) edge).setOutVertex(outVertex);
    F result = frame(edge, kind);
    getFramedElementCache().put(edge.getId(), result);
    return result;
}

Example 10 with DEdge

use of org.openntf.domino.graph2.impl.DEdge in project org.openntf.domino by OpenNTF.

the class JsonSearchAdapter method toVertexFrame.

public static VertexFrame toVertexFrame(final DFramedTransactionalGraph graph, final Edge edge, final Vertex source) {
    VertexFrame result = null;
    Vertex other = null;
    if (edge instanceof DEdge) {
        try {
            other = ((DEdge) edge).getOtherVertex(source);
        } catch (Throwable t) {
            t.printStackTrace();
        }
    } else {
        System.out.println("TEMP DEBUG edge is actually a " + edge.getClass().getName());
    }
    result = (VertexFrame) graph.frame(other, null);
    return result;
}