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  • Committer: Bazaar Package Importer
  • Author(s): Otavio Salvador
  • Date: 2003-07-03 20:08:21 UTC
  • Revision ID: james.westby@ubuntu.com-20030703200821-se4xtqx25e5miczi
Tags: upstream-2.20
Import upstream version 2.20

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src/sd/dv/erdiagram.c
 
1
////////////////////////////////////////////////////////////////////////////////
 
2
//
 
3
// This file is part of Toolkit for Conceptual Modeling (TCM).
 
4
// (c) copyright 1995, Vrije Universiteit Amsterdam.
 
5
// Author: Frank Dehne (frank@cs.vu.nl).
 
6
//
 
7
// TCM is free software; you can redistribute it and/or modify
 
8
// it under the terms of the GNU General Public License as published by
 
9
// the Free Software Foundation; either version 2 of the License, or
 
10
// (at your option) any later version.
 
11
//
 
12
// TCM is distributed in the hope that it will be useful,
 
13
// but WITHOUT ANY WARRANTY; without even the implied warranty of
 
14
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
15
// GNU General Public License for more details.
 
16
//
 
17
// You should have received a copy of the GNU General Public License
 
18
// along with TCM; if not, write to the Free Software
 
19
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 
20
// 02111-1307, USA.
 
21
////////////////////////////////////////////////////////////////////////////////
 
22
#include "ergraph.h"
 
23
#include "erviewer.h"
 
24
#include "erview.h"
 
25
#include "erwindow.h"
 
26
#include "erchecks.h"
 
27
#include "c2r2line.h"
 
28
#include "c1arrow.h"
 
29
#include "textbox.h"
 
30
#include "miniellipse.h"
 
31
#include "box.h"
 
32
#include "diamond.h"
 
33
#include "comment.h"
 
34
#include "entitytype.h"
 
35
#include "relationshipnode.h"
 
36
#include "valuetype.h"
 
37
#include "taxonomyjunction.h"
 
38
#include "emptyedge.h"
 
39
#include "function.h"
 
40
#include "binaryrelationship.h"
 
41
#include "isarelationship.h"
 
42
#include "messagedialog.h"
 
43
#include "replacedialog.h"
 
44
#include "erdiagram.h"
 
45
#include "menu.h"
 
46
 
 
47
ERDiagram::ERDiagram(Config *c, ERWindow *d, ERViewer *v, ERGraph *g): 
 
48
                Diagram(c,d,v,g) {
 
49
        UpdateNodeType(1);
 
50
        UpdateEdgeType(1);
 
51
        GetReplaceDialog()->ManageNameOnlyToggle(True);
 
52
        GetFindDialog()->ManageNameOnlyToggle(True);
 
53
        erChecks = new ERChecks(this, g);
 
54
}
 
55
 
 
56
ERDiagram::~ERDiagram() {
 
57
        delete erChecks;
 
58
}
 
59
 
 
60
Thing *ERDiagram::CreateThing(int classNr) {
 
61
        Grafport *g = GetDiagramViewer()->GetGrafport();
 
62
        ShapeView *v = GetDiagramViewer()->GetCurView();
 
63
        ERGraph *eg = (ERGraph *)GetGraph();
 
64
        Thing *thing = 0;
 
65
        // view
 
66
        if (classNr == Code::VIEW)
 
67
                thing = new ERView((ERViewer *)GetDiagramViewer());
 
68
        // node shapes
 
69
        else if (classNr == Code::BOX)
 
70
                thing = new Box(v, g, 0, 0); 
 
71
        else if (classNr == Code::ELLIPSE)
 
72
                thing = new Ellipse(v, g, 0, 0); 
 
73
        else if (classNr == Code::MINI_ELLIPSE) { 
 
74
                MiniEllipse *ellipse = new MiniEllipse(v, g, 0, 0);
 
75
                // extra for older diagram versions.
 
76
                ellipse->SetFixedName(False); 
 
77
                thing = ellipse;
 
78
        }
 
79
        else if (classNr == Code::DIAMOND)
 
80
                thing = new Diamond(v, g, 0, 0); 
 
81
        else if (classNr == Code::TEXT_BOX)
 
82
                thing = new TextBox(v, g, 0, 0); 
 
83
        // lines
 
84
        else if (classNr == Code::T1_LINE)
 
85
                thing = new C1Arrow(v, g, 0, 0, 0);
 
86
        else if (classNr == Code::T4_LINE || classNr == Code::C2R2_LINE)
 
87
                thing = new C2R2Line(v, g, 0, 0, 0);
 
88
        else if (classNr == Code::LINE)
 
89
                thing = new Line(v, g, 0, 0, 0);
 
90
 
 
91
        // old line types
 
92
        else if (classNr == Code::T1_ARROW)
 
93
                thing = new C1Arrow(v, g, 0, 0, 0);
 
94
        else if (classNr == Code::ARROW) {
 
95
                Line *line = new Line(v, g, 0, 0, 0);
 
96
                line->SetFixedName(True);
 
97
                line->SetEnd2(LineEnd::FILLED_ARROW);
 
98
                thing = line;
 
99
        }
 
100
        else if (classNr == Code::DOUBLE_ARROW) {
 
101
                Line *line = new Line(v, g, 0, 0, 0);
 
102
                line->SetEnd1(LineEnd::FILLED_ARROW);
 
103
                line->SetEnd2(LineEnd::FILLED_ARROW);
 
104
                thing = line;
 
105
        }
 
106
        // nodes
 
107
        else if (classNr == Code::ENTITY_TYPE)
 
108
                thing = new EntityType(eg);
 
109
        else if (classNr == Code::VALUE_TYPE)
 
110
                thing = new ValueType(eg);
 
111
        else if (classNr == Code::TAXONOMY_JUNCTION)
 
112
                thing = new TaxonomyJunction(eg);
 
113
        else if (classNr == Code::RELATIONSHIP_NODE)
 
114
                thing = new RelationshipNode(eg);
 
115
        else if (classNr == Code::COMMENT)
 
116
                thing = new Comment(eg);
 
117
        // edges
 
118
        else if (classNr == Code::BINARY_RELATIONSHIP)
 
119
                thing = new BinaryRelationship(eg, 0, 0);
 
120
        else if (classNr == Code::FUNCTION)
 
121
                thing = new Function(eg, 0, 0);
 
122
        else if (classNr == Code::EMPTY_EDGE)
 
123
                thing = new EmptyEdge(eg, 0, 0);
 
124
        else if (classNr == Code::ISA_RELATIONSHIP)
 
125
                thing = new IsaRelationship(eg, 0, 0);
 
126
        else
 
127
                error("%s, line %d: impl error: "
 
128
                        "wrong class number %d\n", __FILE__, __LINE__, classNr);
 
129
        return thing;
 
130
}
 
131
 
 
132
Node *ERDiagram::CreateNode(){
 
133
        Node *node;
 
134
        ERGraph *eg = (ERGraph *)GetGraph();
 
135
        if (GetNodeType() == Code::TAXONOMY_JUNCTION)
 
136
                node = new TaxonomyJunction(eg);
 
137
        else if (GetNodeType() == Code::VALUE_TYPE)
 
138
                node = new ValueType(eg);
 
139
        else if (GetNodeType() == Code::ENTITY_TYPE)
 
140
                node = new EntityType(eg);
 
141
        else if (GetNodeType() == Code::RELATIONSHIP_NODE)
 
142
                node = new RelationshipNode(eg);
 
143
        else if (GetNodeType() == Code::COMMENT)
 
144
                node = new Comment(eg);
 
145
        else {
 
146
                error("%s, line %d: impl error: "
 
147
                        "unknown node type\n", __FILE__, __LINE__);
 
148
                node = 0;
 
149
        }
 
150
        return node;
 
151
}
 
152
 
 
153
bool ERDiagram::CheckEdgeConstraints(Subject *subj1, Subject *subj2) {
 
154
        // Check possible connections (subj-subj-edge matrix).
 
155
        if (!CheckConnection(subj1, subj2))
 
156
                return False;
 
157
        int subj1Type = subj1->GetClassType();
 
158
        int subj2Type = subj2->GetClassType();
 
159
        bool isError = False;
 
160
        // Check for double is_a from tax.junction (or modejunction).
 
161
        // Draw a picture for seeing these different cases.
 
162
        if (GetEdgeType()==Code::ISA_RELATIONSHIP &&
 
163
                (subj1Type==Code::TAXONOMY_JUNCTION || 
 
164
                        subj1Type==Code::MODE_JUNCTION) &&
 
165
                        ((ERGraph *)GetGraph())->IsaLeaves(subj1)) {
 
166
                isError = True;
 
167
        }
 
168
        // Check for double is_a between same ent.types (or object classes).
 
169
        else if (GetEdgeType()==Code::ISA_RELATIONSHIP &&
 
170
                (subj1Type==Code::ENTITY_TYPE||subj1Type==Code::CLASS_NODE) &&
 
171
                (subj2Type==Code::ENTITY_TYPE||subj2Type==Code::CLASS_NODE) &&
 
172
                GetGraph()->IsConnected(subj1, subj2, Code::ISA_RELATIONSHIP)) {
 
173
                isError = True;
 
174
        }
 
175
        // Check for double empty_edge from ent. type (or object class) to a
 
176
        // taxonomyjunction (or modejunction).
 
177
        else if ((GetEdgeType()==Code::EMPTY_EDGE &&
 
178
                (subj1Type==Code::ENTITY_TYPE ||
 
179
                 subj1Type==Code::CLASS_NODE) &&
 
180
                (subj2Type==Code::TAXONOMY_JUNCTION ||
 
181
                 subj2Type==Code::MODE_JUNCTION) &&
 
182
                 GetGraph()->IsConnected(subj1, subj2)) ||
 
183
           (GetEdgeType()==Code::EMPTY_EDGE &&
 
184
                (subj2Type==Code::ENTITY_TYPE ||
 
185
                 subj2Type==Code::CLASS_NODE) &&
 
186
                (subj1Type==Code::TAXONOMY_JUNCTION||
 
187
                 subj1Type==Code::MODE_JUNCTION) &&
 
188
                 GetGraph()->IsConnected(subj2, subj1))) {
 
189
                isError = True;
 
190
        }
 
191
        if (isError) {
 
192
                string txt = "Cannot add another ";
 
193
                txt += Code::GetName(GetEdgeType());
 
194
                txt += " here";
 
195
                ShowDialog(MessageDialog::ERROR, "Error", &txt);
 
196
                return False;
 
197
        }
 
198
        return True;
 
199
}
 
200
 
 
201
bool ERDiagram::CheckIsaLoop(Edge *edge) {
 
202
        if (GetEdgeType() == Code::EMPTY_EDGE || 
 
203
            GetEdgeType() == Code::ISA_RELATIONSHIP) {
 
204
                GetGraph()->AddEdge(edge);
 
205
                Subject *n1 = edge->GetSubject1();
 
206
                if (((ERGraph *)GetGraph())->IsaPathExists(n1, n1)) {
 
207
                        string txt = "'is_a loops' are not allowed";
 
208
                        ShowDialog(MessageDialog::ERROR, "Error", &txt);
 
209
                        GetGraph()->RemoveEdge(edge);
 
210
                        return False;
 
211
                }
 
212
                GetGraph()->RemoveEdge(edge);
 
213
        }
 
214
        return True;
 
215
}
 
216
 
 
217
Edge *ERDiagram::CreateEdge(Subject *n1, Subject *n2){
 
218
        if (!CheckEdgeConstraints(n1, n2))
 
219
                return 0; 
 
220
        Edge *edge = 0;
 
221
        ERGraph *eg = (ERGraph *)GetGraph();
 
222
        if (GetEdgeType() == Code::EMPTY_EDGE)
 
223
                edge = new EmptyEdge(eg, n1, n2);
 
224
        else if (GetEdgeType() == Code::FUNCTION)
 
225
                edge = new Function(eg, n1, n2);
 
226
        else if (GetEdgeType() == Code::BINARY_RELATIONSHIP)
 
227
                edge = new BinaryRelationship(eg, n1, n2);
 
228
        else if (GetEdgeType() == Code::ISA_RELATIONSHIP)
 
229
                edge = new IsaRelationship(eg, n1, n2);
 
230
        else
 
231
                error("%s, line %d: impl error: "
 
232
                        "unknown edge type\n", __FILE__, __LINE__);
 
233
 
 
234
        if (!CheckIsaLoop(edge)) {
 
235
                delete edge;
 
236
                return 0;
 
237
        }
 
238
        return edge;
 
239
}
 
240
 
 
241
NodeShape *ERDiagram::CreateNodeShape(Node *node, int x, int y) {
 
242
        NodeShape *shape = 0;
 
243
        Grafport *g = GetDiagramViewer()->GetGrafport();
 
244
        ShapeView *v = GetDiagramViewer()->GetCurView();
 
245
        if (GetNodeShapeType() == Code::BOX)
 
246
                shape = new Box(v, g, x, y);
 
247
        else if (GetNodeShapeType() == Code::ELLIPSE)
 
248
                shape = new Ellipse(v, g, x, y);
 
249
        else if (GetNodeShapeType() == Code::MINI_ELLIPSE) {
 
250
                shape = new MiniEllipse(v, g, x, y);
 
251
                shape->SetFixedName(False); // tax.junct. is editable
 
252
        }
 
253
        else if (GetNodeShapeType() == Code::DIAMOND)
 
254
                shape = new Diamond(v, g, x, y);
 
255
        else if (GetNodeShapeType() == Code::TEXT_BOX)
 
256
                shape = new TextBox(v, g, x, y);
 
257
        else
 
258
                error("%s, line %d: impl error: "
 
259
                        "node shape type does not exist\n", __FILE__, __LINE__);
 
260
 
 
261
        if (check(shape)) {
 
262
                shape->SetSubject(node);
 
263
                shape->SetTextShape();
 
264
        }
 
265
        return shape;
 
266
}
 
267
 
 
268
Line *ERDiagram::CreateLine(
 
269
                Edge *edge, GShape *from, GShape *to, List<Point *> *l) {
 
270
        Grafport *g = GetDiagramViewer()->GetGrafport();
 
271
        ShapeView *v = GetDiagramViewer()->GetCurView();
 
272
        Line *line = 0;
 
273
        if (GetLineType() == Code::T1_LINE)
 
274
                line = new C1Arrow(v, g, from, to, l, IsCurve());
 
275
        else if (GetLineType() == Code::C2R2_LINE)
 
276
                line = new C2R2Line(v, g, from, to, l, IsCurve());
 
277
        else if (GetLineType() == Code::LINE)
 
278
                line = new Line(v, g, from, to, l, IsCurve());
 
279
        else
 
280
                error("%s, line %d: impl error: "
 
281
                        "line type does not exist\n", __FILE__, __LINE__);
 
282
 
 
283
        if (check(line)) {
 
284
                line->SetSubject(edge);
 
285
                line->SetTextShape();
 
286
                line->SetEnd1(GetLineEnd1());
 
287
                line->SetEnd2(GetLineEnd2());
 
288
                if (GetEdgeType()==Code::EMPTY_EDGE ||
 
289
                    GetEdgeType()==Code::ISA_RELATIONSHIP)
 
290
                        line->SetFixedName(True);
 
291
                if (GetLineEnd1()==LineEnd::FILLED_ARROW) {
 
292
                        if (edge->GetClassType()==Code::FUNCTION) {
 
293
                                string constr("1");
 
294
                                ((Function *)edge)->SetConstraint(&constr);
 
295
                        }
 
296
                }
 
297
        }
 
298
        return line;
 
299
}
 
300
 
 
301
void ERDiagram::UpdateNodeType(int num) {
 
302
        ((DiagramWindow *)GetMainWindow())->SetNodeName(num);
 
303
        switch (num) {
 
304
        case 1: SetNodeType(Code::ENTITY_TYPE);
 
305
                SetNodeShapeType(Code::BOX);
 
306
                break;
 
307
        case 2: SetNodeType(Code::VALUE_TYPE);
 
308
                SetNodeShapeType(Code::ELLIPSE);
 
309
                break;
 
310
        case 3: SetNodeType(Code::TAXONOMY_JUNCTION);
 
311
                SetNodeShapeType(Code::MINI_ELLIPSE);
 
312
                break;
 
313
        case 4: SetNodeType(Code::RELATIONSHIP_NODE);
 
314
                SetNodeShapeType(Code::DIAMOND);
 
315
                break;
 
316
        case 5: SetNodeType(Code::COMMENT);
 
317
                SetNodeShapeType(Code::TEXT_BOX);
 
318
                break;
 
319
        default:
 
320
                error("%s, line %d: impl error: "
 
321
                        "unknown node type selected\n", __FILE__,__LINE__);
 
322
        }
 
323
}
 
324
 
 
325
void ERDiagram::UpdateEdgeType(int num) {
 
326
        ((DiagramWindow *)GetMainWindow())->SetEdgeName(num);
 
327
        switch(num) {
 
328
        case 1: SetEdgeType(Code::BINARY_RELATIONSHIP);
 
329
                SetLineType(Code::C2R2_LINE);
 
330
                SetLineEnd1(LineEnd::EMPTY);
 
331
                SetLineEnd2(LineEnd::EMPTY);
 
332
                break;
 
333
        case 2: SetEdgeType(Code::FUNCTION);
 
334
                SetLineType(Code::T1_LINE);
 
335
                SetLineEnd1(LineEnd::EMPTY);
 
336
                SetLineEnd2(LineEnd::FILLED_ARROW);
 
337
                break;
 
338
        case 3: SetEdgeType(Code::ISA_RELATIONSHIP);
 
339
                SetLineType(Code::LINE);
 
340
                SetLineEnd1(LineEnd::EMPTY);
 
341
                SetLineEnd2(LineEnd::FILLED_ARROW);
 
342
                break;
 
343
        case 4: SetEdgeType(Code::EMPTY_EDGE);
 
344
                SetLineType(Code::LINE);
 
345
                SetLineEnd1(LineEnd::EMPTY);
 
346
                SetLineEnd2(LineEnd::EMPTY);
 
347
                break;
 
348
        case 5: SetEdgeType(Code::FUNCTION);
 
349
                SetLineType(Code::LINE);
 
350
                SetLineEnd1(LineEnd::FILLED_ARROW);
 
351
                SetLineEnd2(LineEnd::FILLED_ARROW);
 
352
                break;
 
353
        default:
 
354
                error("%s, line %d: impl error: "
 
355
                        "unknown edge type selected\n", __FILE__,__LINE__);
 
356
        }
 
357
}
 
358
 
 
359
bool ERDiagram::SetText(TextShape *t, const string *s) {
 
360
        const string *description = t->GetDescription();
 
361
        Subject *subj = t->GetParent()->GetSubject();
 
362
        if (*description == "Cardinality Constraint")
 
363
                return SetConstraint(subj, s, t->GetSequence());
 
364
        else if (*description == "Role Name")
 
365
                return SetRoleName(subj, s, t->GetSequence()%2);
 
366
        else
 
367
                return Diagram::SetText(t, s);
 
368
}
 
369
 
 
370
bool ERDiagram::SetConstraint(Subject *subject, const string *s, unsigned nr) {
 
371
        List<GShape *> shapes;
 
372
        GetDiagramViewer()->GetShapes(subject, &shapes);
 
373
        bool wrong_syntax = False;
 
374
        Edge *e = (Edge *)subject;
 
375
        int eType = e->GetClassType();
 
376
        if (eType == Code::FUNCTION || eType == Code::COMPONENT_FUNCTION) {
 
377
                Function *edge = (Function *)subject;
 
378
                if (!edge->SetConstraint(s))
 
379
                        wrong_syntax = True;
 
380
        }
 
381
        else if (eType == Code::SSD_PARTICIPANT_LINK_EDGE) {
 
382
                wrong_syntax = !((C1Edge *)subject)->SetConstraint(s);
 
383
        }
 
384
        else if (eType == Code::BINARY_RELATIONSHIP ||
 
385
                 eType == Code::SSD_BINARY_ASSOCIATION_EDGE ||
 
386
                 eType == Code::UCD_BINARY_ASSOCIATION_EDGE ||
 
387
                 eType == Code::SSD_AGGREGATION_EDGE ||
 
388
                 eType == Code::SSD_COMPOSITION_EDGE ||
 
389
                 eType == Code::CBD_CLASS_LINK_EDGE ||
 
390
                 eType == Code::CBD_OBJECT_LINK_EDGE) {
 
391
                BinaryRelationship *edge = (BinaryRelationship *)subject;
 
392
                if (nr == 1) {
 
393
                        if (!edge->SetConstraint1(s))
 
394
                                wrong_syntax = True;
 
395
                }
 
396
                else if (nr == 2) {
 
397
                        if (!edge->SetConstraint2(s))
 
398
                                wrong_syntax = True;
 
399
                }
 
400
        }
 
401
        if (wrong_syntax) {
 
402
                string txt = "'" + *s + "' wrong syntax\n for a "
 
403
                                        "cardinality constraint";
 
404
                ShowDialog(MessageDialog::ERROR, "Error", &txt);
 
405
                return False;
 
406
        }
 
407
        if (check(shapes.first())) {
 
408
                do {
 
409
                        if (nr == 1)
 
410
                                ((T1Line *)shapes.cur())->UpdateTextShape1(s);
 
411
                        else
 
412
                                ((C2R2Line *)shapes.cur())->UpdateTextShape2(s);
 
413
                }
 
414
                while (shapes.next());
 
415
        }
 
416
        else 
 
417
                return False;
 
418
        return True;
 
419
}
 
420
 
 
421
bool ERDiagram::SetRoleName(Subject *subject, const string *s, unsigned nr) {
 
422
        List<GShape *> shapes;
 
423
        GetDiagramViewer()->GetShapes(subject, &shapes);
 
424
        BinaryRelationship *edge = (BinaryRelationship *)subject;
 
425
        bool succes = True;
 
426
        if (nr == 1) {
 
427
                if (!edge->SetRoleName1(s))
 
428
                        succes = False;
 
429
        }
 
430
        else {
 
431
                if (!edge->SetRoleName2(s))
 
432
                        succes = False;
 
433
        }
 
434
        if (!succes) {
 
435
                string txt = "'" + *s + "' is not a possible role name";
 
436
                ShowDialog(MessageDialog::ERROR, "Error", &txt);
 
437
                return False;
 
438
        }
 
439
        if (check(shapes.first())) {
 
440
                do {
 
441
                        Shape *shape = shapes.cur();
 
442
                        if (nr == 1)
 
443
                                ((C2R2Line *)shape)->UpdateTextShape3(s);
 
444
                        else 
 
445
                                ((C2R2Line *)shape)->UpdateTextShape4(s);
 
446
                } while (shapes.next());
 
447
        }
 
448
        else 
 
449
                return False;
 
450
        return True;
 
451
}
 
452
 
 
453
void ERDiagram::CheckDocument() {
 
454
        chkbuf = "";
 
455
        unsigned total = 0;
 
456
        total += erChecks->CheckNamelessBinaryRelationships(chkbuf);
 
457
        if (total == 0)
 
458
                total += erChecks->CheckDoubleNamelessEdges(
 
459
                        Code::BINARY_RELATIONSHIP, Code::ENTITY_TYPE, 
 
460
                        Code::ENTITY_TYPE, chkbuf);
 
461
        // all nodes have a name.
 
462
        total += erChecks->CheckNamelessNodes(Code::ENTITY_TYPE, chkbuf);
 
463
        total += erChecks->CheckNamelessNodes(Code::VALUE_TYPE, chkbuf);
 
464
        total += erChecks->CheckNamelessNodes(Code::RELATIONSHIP_NODE, chkbuf);
 
465
        // all functions and relationships are identifiable.
 
466
        total += erChecks->CheckNamelessEdges(
 
467
                Code::FUNCTION, Code::ENTITY_TYPE, Code::VALUE_TYPE, chkbuf);
 
468
        total += erChecks->CheckNamelessEdges(
 
469
                Code::FUNCTION, Code::RELATIONSHIP_NODE, Code::VALUE_TYPE, chkbuf);
 
470
        total += erChecks->CheckDoubleNamelessEdges(
 
471
                Code::FUNCTION, Code::RELATIONSHIP_NODE, Code::ENTITY_TYPE, chkbuf);
 
472
        total += erChecks->CheckDoubleNamelessEdges(
 
473
                Code::FUNCTION, Code::ENTITY_TYPE, Code::ENTITY_TYPE, chkbuf);
 
474
        // double nodes can still occur after cut-copy-paste
 
475
        total += erChecks->CheckDoubleNodes(Code::ENTITY_TYPE, chkbuf);
 
476
        total += erChecks->CheckConnected(Code::VALUE_TYPE, False, chkbuf);
 
477
        total += erChecks->CheckJunctionCoherence(
 
478
                Code::TAXONOMY_JUNCTION, Code::ISA_RELATIONSHIP, 
 
479
                Code::EMPTY_EDGE, 2, chkbuf);
 
480
        total += erChecks->CheckRelationshipCoherence(chkbuf);
 
481
        total += erChecks->CheckDoubleRelationships(chkbuf);
 
482
        ReportCheck(total, &chkbuf);
 
483
}