models/qsqlrelationaltablemodel.cpp

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40****************************************************************************/ -
41 -
42#include "qsqlrelationaltablemodel.h" -
43 -
44#include "qhash.h" -
45#include "qstringlist.h" -
46#include "qsqldatabase.h" -
47#include "qsqldriver.h" -
48#include "qsqlerror.h" -
49#include "qsqlfield.h" -
50#include "qsqlindex.h" -
51#include "qsqlquery.h" -
52#include "qsqlrecord.h" -
53 -
54#include "qsqltablemodel_p.h" -
55 -
56#include "qdebug.h" -
57 -
58QT_BEGIN_NAMESPACE -
59 -
60class QSqlRelationalTableModelSql: public QSqlTableModelSql -
61{ -
62public: -
63 inline const static QString relTablePrefix(int i) { return QString::number(i).prepend(QLatin1String("relTblAl_")); }
executed: return QString::number(i).prepend(QLatin1String("relTblAl_"));
Execution Count:107
107
64}; -
65 -
66typedef QSqlRelationalTableModelSql Sql; -
67 -
68/*! -
69 \class QSqlRelation -
70 \inmodule QtSql -
71 \brief The QSqlRelation class stores information about an SQL foreign key. -
72 -
73 QSqlRelation is a helper class for QSqlRelationalTableModel. See -
74 QSqlRelationalTableModel::setRelation() and -
75 QSqlRelationalTableModel::relation() for details. -
76 -
77 \sa QSqlRelationalTableModel, QSqlRelationalDelegate, -
78 {Relational Table Model Example} -
79*/ -
80 -
81/*! -
82 \fn QSqlRelation::QSqlRelation() -
83 -
84 Constructs an invalid QSqlRelation object. -
85 -
86 For such an object, the tableName(), indexColumn(), and -
87 displayColumn() functions return an empty string. -
88 -
89 \sa isValid() -
90*/ -
91 -
92/*! -
93 \fn QSqlRelation::QSqlRelation(const QString &tableName, const QString &indexColumn, -
94 const QString &displayColumn) -
95 -
96 Constructs a QSqlRelation object, where \a tableName is the SQL -
97 table name to which a foreign key refers, \a indexColumn is the -
98 foreign key, and \a displayColumn is the field that should be -
99 presented to the user. -
100 -
101 \sa tableName(), indexColumn(), displayColumn() -
102*/ -
103 -
104/*! -
105 \fn QString QSqlRelation::tableName() const -
106 -
107 Returns the name of the table to which a foreign key refers. -
108*/ -
109 -
110/*! -
111 \fn QString QSqlRelation::indexColumn() const -
112 -
113 Returns the index column from table tableName() to which a -
114 foreign key refers. -
115*/ -
116 -
117/*! -
118 \fn QString QSqlRelation::displayColumn() const -
119 -
120 Returns the column from table tableName() that should be -
121 presented to the user instead of a foreign key. -
122*/ -
123 -
124/*! -
125 \fn bool QSqlRelation::isValid() const -
126 -
127 Returns true if the QSqlRelation object is valid; otherwise -
128 returns false. -
129*/ -
130 -
131class QRelatedTableModel; -
132 -
133struct QRelation -
134{ -
135 public: -
136 QRelation(): model(0), m_parent(0), m_dictInitialized(false) {}
executed: }
Execution Count:266
266
137 void init(QSqlRelationalTableModel *parent, const QSqlRelation &relation); -
138 -
139 void populateModel(); -
140 -
141 bool isDictionaryInitialized(); -
142 void populateDictionary(); -
143 void clearDictionary(); -
144 -
145 void clear(); -
146 bool isValid(); -
147 -
148 QSqlRelation rel; -
149 QRelatedTableModel *model; -
150 QHash<QString, QVariant> dictionary;//maps keys to display values -
151 -
152 private: -
153 QSqlRelationalTableModel *m_parent; -
154 bool m_dictInitialized; -
155}; -
156 -
157class QRelatedTableModel : public QSqlTableModel -
158{ -
159public: -
160 QRelatedTableModel(QRelation *rel, QObject *parent = 0, QSqlDatabase db = QSqlDatabase()); -
161 bool select(); -
162private: -
163 bool firstSelect; -
164 QRelation *relation; -
165}; -
166/* -
167 A QRelation must be initialized before it is considered valid. -
168 Note: population of the model and dictionary are kept separate -
169 from initialization, and are populated on an as needed basis. -
170*/ -
171void QRelation::init(QSqlRelationalTableModel *parent, const QSqlRelation &relation) -
172{ -
173 Q_ASSERT(parent != NULL);
executed (the execution status of this line is deduced): qt_noop();
-
174 m_parent = parent;
executed (the execution status of this line is deduced): m_parent = parent;
-
175 rel = relation;
executed (the execution status of this line is deduced): rel = relation;
-
176}
executed: }
Execution Count:44
44
177 -
178void QRelation::populateModel() -
179{ -
180 if (!isValid())
partially evaluated: !isValid()
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:40
0-40
181 return;
never executed: return;
0
182 Q_ASSERT(m_parent != NULL);
executed (the execution status of this line is deduced): qt_noop();
-
183 -
184 if (!model) {
partially evaluated: !model
TRUEFALSE
yes
Evaluation Count:40
no
Evaluation Count:0
0-40
185 model = new QRelatedTableModel(this, m_parent, m_parent->database());
executed (the execution status of this line is deduced): model = new QRelatedTableModel(this, m_parent, m_parent->database());
-
186 model->setTable(rel.tableName());
executed (the execution status of this line is deduced): model->setTable(rel.tableName());
-
187 model->select();
executed (the execution status of this line is deduced): model->select();
-
188 }
executed: }
Execution Count:40
40
189}
executed: }
Execution Count:40
40
190 -
191bool QRelation::isDictionaryInitialized() -
192{ -
193 return m_dictInitialized;
executed: return m_dictInitialized;
Execution Count:191
191
194} -
195 -
196void QRelation::populateDictionary() -
197{ -
198 if (!isValid())
partially evaluated: !isValid()
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:66
0-66
199 return;
never executed: return;
0
200 -
201 if (model == NULL)
evaluated: model == __null
TRUEFALSE
yes
Evaluation Count:37
yes
Evaluation Count:29
29-37
202 populateModel();
executed: populateModel();
Execution Count:37
37
203 -
204 QSqlRecord record;
executed (the execution status of this line is deduced): QSqlRecord record;
-
205 QString indexColumn;
executed (the execution status of this line is deduced): QString indexColumn;
-
206 QString displayColumn;
executed (the execution status of this line is deduced): QString displayColumn;
-
207 for (int i=0; i < model->rowCount(); ++i) {
evaluated: i < model->rowCount()
TRUEFALSE
yes
Evaluation Count:136
yes
Evaluation Count:66
66-136
208 record = model->record(i);
executed (the execution status of this line is deduced): record = model->record(i);
-
209 -
210 indexColumn = rel.indexColumn();
executed (the execution status of this line is deduced): indexColumn = rel.indexColumn();
-
211 if (m_parent->database().driver()->isIdentifierEscaped(indexColumn, QSqlDriver::FieldName))
evaluated: m_parent->database().driver()->isIdentifierEscaped(indexColumn, QSqlDriver::FieldName)
TRUEFALSE
yes
Evaluation Count:14
yes
Evaluation Count:122
14-122
212 indexColumn = m_parent->database().driver()->stripDelimiters(indexColumn, QSqlDriver::FieldName);
executed: indexColumn = m_parent->database().driver()->stripDelimiters(indexColumn, QSqlDriver::FieldName);
Execution Count:14
14
213 -
214 displayColumn = rel.displayColumn();
executed (the execution status of this line is deduced): displayColumn = rel.displayColumn();
-
215 if (m_parent->database().driver()->isIdentifierEscaped(displayColumn, QSqlDriver::FieldName))
evaluated: m_parent->database().driver()->isIdentifierEscaped(displayColumn, QSqlDriver::FieldName)
TRUEFALSE
yes
Evaluation Count:18
yes
Evaluation Count:118
18-118
216 displayColumn = m_parent->database().driver()->stripDelimiters(displayColumn, QSqlDriver::FieldName);
executed: displayColumn = m_parent->database().driver()->stripDelimiters(displayColumn, QSqlDriver::FieldName);
Execution Count:18
18
217 -
218 dictionary[record.field(indexColumn).value().toString()] =
executed (the execution status of this line is deduced): dictionary[record.field(indexColumn).value().toString()] =
-
219 record.field(displayColumn).value();
executed (the execution status of this line is deduced): record.field(displayColumn).value();
-
220 }
executed: }
Execution Count:136
136
221 m_dictInitialized = true;
executed (the execution status of this line is deduced): m_dictInitialized = true;
-
222}
executed: }
Execution Count:66
66
223 -
224void QRelation::clearDictionary() -
225{ -
226 dictionary.clear();
executed (the execution status of this line is deduced): dictionary.clear();
-
227 m_dictInitialized = false;
executed (the execution status of this line is deduced): m_dictInitialized = false;
-
228}
executed: }
Execution Count:216
216
229 -
230void QRelation::clear() -
231{ -
232 delete model;
executed (the execution status of this line is deduced): delete model;
-
233 model = 0;
executed (the execution status of this line is deduced): model = 0;
-
234 clearDictionary();
executed (the execution status of this line is deduced): clearDictionary();
-
235}
executed: }
Execution Count:4
4
236 -
237bool QRelation::isValid() -
238{ -
239 return (rel.isValid() && m_parent != NULL);
executed: return (rel.isValid() && m_parent != __null);
Execution Count:497
497
240} -
241 -
242 -
243 -
244QRelatedTableModel::QRelatedTableModel(QRelation *rel, QObject *parent, QSqlDatabase db) : -
245 QSqlTableModel(parent, db), firstSelect(true), relation(rel) -
246{ -
247}
executed: }
Execution Count:40
40
248 -
249bool QRelatedTableModel::select() -
250{ -
251 if (firstSelect) {
evaluated: firstSelect
TRUEFALSE
yes
Evaluation Count:40
yes
Evaluation Count:1
1-40
252 firstSelect = false;
executed (the execution status of this line is deduced): firstSelect = false;
-
253 return QSqlTableModel::select();
executed: return QSqlTableModel::select();
Execution Count:40
40
254 } -
255 relation->clearDictionary();
executed (the execution status of this line is deduced): relation->clearDictionary();
-
256 bool res = QSqlTableModel::select();
executed (the execution status of this line is deduced): bool res = QSqlTableModel::select();
-
257 if (res)
partially evaluated: res
TRUEFALSE
yes
Evaluation Count:1
no
Evaluation Count:0
0-1
258 relation->populateDictionary();
executed: relation->populateDictionary();
Execution Count:1
1
259 return res;
executed: return res;
Execution Count:1
1
260} -
261 -
262 -
263class QSqlRelationalTableModelPrivate: public QSqlTableModelPrivate -
264{ -
265 Q_DECLARE_PUBLIC(QSqlRelationalTableModel) -
266public: -
267 QSqlRelationalTableModelPrivate() -
268 : QSqlTableModelPrivate(), -
269 joinMode( QSqlRelationalTableModel::InnerJoin ) -
270 {}
executed: }
Execution Count:31
31
271 QString fullyQualifiedFieldName(const QString &tableName, const QString &fieldName) const; -
272 -
273 int nameToIndex(const QString &name) const; -
274 mutable QVector<QRelation> relations; -
275 QSqlRecord baseRec; // the record without relations -
276 void clearChanges(); -
277 void clearCache(); -
278 void revertCachedRow(int row); -
279 -
280 void translateFieldNames(QSqlRecord &values) const; -
281 QSqlRelationalTableModel::JoinMode joinMode; -
282}; -
283 -
284void QSqlRelationalTableModelPrivate::clearChanges() -
285{ -
286 for (int i = 0; i < relations.count(); ++i) {
evaluated: i < relations.count()
TRUEFALSE
yes
Evaluation Count:4
yes
Evaluation Count:32
4-32
287 QRelation &rel = relations[i];
executed (the execution status of this line is deduced): QRelation &rel = relations[i];
-
288 rel.clear();
executed (the execution status of this line is deduced): rel.clear();
-
289 }
executed: }
Execution Count:4
4
290}
executed: }
Execution Count:32
32
291 -
292void QSqlRelationalTableModelPrivate::revertCachedRow(int row) -
293{ -
294 QSqlTableModelPrivate::revertCachedRow(row);
executed (the execution status of this line is deduced): QSqlTableModelPrivate::revertCachedRow(row);
-
295}
executed: }
Execution Count:19
19
296 -
297int QSqlRelationalTableModelPrivate::nameToIndex(const QString &name) const -
298{ -
299 const QString fieldname = strippedFieldName(name);
executed (the execution status of this line is deduced): const QString fieldname = strippedFieldName(name);
-
300 int idx = baseRec.indexOf(fieldname);
executed (the execution status of this line is deduced): int idx = baseRec.indexOf(fieldname);
-
301 if (idx == -1) {
evaluated: idx == -1
TRUEFALSE
yes
Evaluation Count:1
yes
Evaluation Count:16
1-16
302 // If the name is an alias we can find it here. -
303 idx = QSqlTableModelPrivate::nameToIndex(name);
executed (the execution status of this line is deduced): idx = QSqlTableModelPrivate::nameToIndex(name);
-
304 }
executed: }
Execution Count:1
1
305 return idx;
executed: return idx;
Execution Count:17
17
306} -
307 -
308/*! -
309 \reimp -
310*/ -
311void QSqlRelationalTableModelPrivate::clearCache() -
312{ -
313 for (int i = 0; i < relations.count(); ++i)
evaluated: i < relations.count()
TRUEFALSE
yes
Evaluation Count:211
yes
Evaluation Count:74
74-211
314 relations[i].clearDictionary();
executed: relations[i].clearDictionary();
Execution Count:211
211
315 -
316 QSqlTableModelPrivate::clearCache();
executed (the execution status of this line is deduced): QSqlTableModelPrivate::clearCache();
-
317}
executed: }
Execution Count:74
74
318 -
319/*! -
320 \class QSqlRelationalTableModel -
321 \brief The QSqlRelationalTableModel class provides an editable -
322 data model for a single database table, with foreign key support. -
323 -
324 \ingroup database -
325 \inmodule QtSql -
326 -
327 QSqlRelationalTableModel acts like QSqlTableModel, but allows -
328 columns to be set as foreign keys into other database tables. -
329 -
330 \table -
331 \row \li \inlineimage noforeignkeys.png -
332 \li \inlineimage foreignkeys.png -
333 \endtable -
334 -
335 The screenshot on the left shows a plain QSqlTableModel in a -
336 QTableView. Foreign keys (\c city and \c country) aren't resolved -
337 to human-readable values. The screenshot on the right shows a -
338 QSqlRelationalTableModel, with foreign keys resolved into -
339 human-readable text strings. -
340 -
341 The following code snippet shows how the QSqlRelationalTableModel -
342 was set up: -
343 -
344 \snippet relationaltablemodel/relationaltablemodel.cpp 0 -
345 \codeline -
346 \snippet relationaltablemodel/relationaltablemodel.cpp 1 -
347 \snippet relationaltablemodel/relationaltablemodel.cpp 2 -
348 -
349 The setRelation() function calls establish a relationship between -
350 two tables. The first call specifies that column 2 in table \c -
351 employee is a foreign key that maps with field \c id of table \c -
352 city, and that the view should present the \c{city}'s \c name -
353 field to the user. The second call does something similar with -
354 column 3. -
355 -
356 If you use a read-write QSqlRelationalTableModel, you probably -
357 want to use QSqlRelationalDelegate on the view. Unlike the default -
358 delegate, QSqlRelationalDelegate provides a combobox for fields -
359 that are foreign keys into other tables. To use the class, simply -
360 call QAbstractItemView::setItemDelegate() on the view with an -
361 instance of QSqlRelationalDelegate: -
362 -
363 \snippet relationaltablemodel/relationaltablemodel.cpp 4 -
364 -
365 The \l{relationaltablemodel} example illustrates how to use -
366 QSqlRelationalTableModel in conjunction with -
367 QSqlRelationalDelegate to provide tables with foreign key -
368 support. -
369 -
370 \image relationaltable.png -
371 -
372 Notes: -
373 -
374 \list -
375 \li The table must have a primary key declared. -
376 \li The table's primary key may not contain a relation to -
377 another table. -
378 \li If a relational table contains keys that refer to non-existent -
379 rows in the referenced table, the rows containing the invalid -
380 keys will not be exposed through the model. The user or the -
381 database is responsible for keeping referential integrity. -
382 \li If a relation's display column name is also used as a column -
383 name in the relational table, or if it is used as display column -
384 name in more than one relation it will be aliased. The alias is -
385 the relation's table name, display column name and a unique id -
386 joined by an underscore (e.g. tablename_columnname_id). -
387 QSqlRecord::fieldName() will return the aliased column name. -
388 All occurrences of the duplicate display column name are aliased when -
389 duplication is detected, but no aliasing is done to the column -
390 names in the main table. The aliasing doesn't affect -
391 QSqlRelation, so QSqlRelation::displayColumn() will return the -
392 original display column name. -
393 \li The reference table name is aliased. The alias is the word "relTblAl" -
394 and the relationed column index joined by an underscore -
395 (e.g. relTblAl_2). The alias can be used to filter the table -
396 (For example, setFilter("relTblAl_2='Oslo' OR -
397 relTblAl_3='USA'")). -
398 \li When using setData() the role should always be Qt::EditRole, -
399 and when using data() the role should always be Qt::DisplayRole. -
400 \endlist -
401 -
402 \sa QSqlRelation, QSqlRelationalDelegate, -
403 {Relational Table Model Example} -
404*/ -
405 -
406 -
407/*! -
408 Creates an empty QSqlRelationalTableModel and sets the parent to \a parent -
409 and the database connection to \a db. If \a db is not valid, the -
410 default database connection will be used. -
411*/ -
412QSqlRelationalTableModel::QSqlRelationalTableModel(QObject *parent, QSqlDatabase db) -
413 : QSqlTableModel(*new QSqlRelationalTableModelPrivate, parent, db) -
414{ -
415}
executed: }
Execution Count:31
31
416 -
417/*! -
418 Destroys the object and frees any allocated resources. -
419*/ -
420QSqlRelationalTableModel::~QSqlRelationalTableModel() -
421{ -
422} -
423 -
424/*! -
425 \reimp -
426*/ -
427QVariant QSqlRelationalTableModel::data(const QModelIndex &index, int role) const -
428{ -
429 Q_D(const QSqlRelationalTableModel);
executed (the execution status of this line is deduced): const QSqlRelationalTableModelPrivate * const d = d_func();
-
430 -
431 if (role == Qt::DisplayRole && index.column() >= 0 && index.column() < d->relations.count() &&
evaluated: role == Qt::DisplayRole
TRUEFALSE
yes
Evaluation Count:248
yes
Evaluation Count:88
evaluated: index.column() >= 0
TRUEFALSE
yes
Evaluation Count:243
yes
Evaluation Count:5
evaluated: index.column() < d->relations.count()
TRUEFALSE
yes
Evaluation Count:223
yes
Evaluation Count:20
5-248
432 d->relations.value(index.column()).isValid()) {
evaluated: d->relations.value(index.column()).isValid()
TRUEFALSE
yes
Evaluation Count:147
yes
Evaluation Count:76
76-147
433 QRelation &relation = d->relations[index.column()];
executed (the execution status of this line is deduced): QRelation &relation = d->relations[index.column()];
-
434 if (!relation.isDictionaryInitialized())
evaluated: !relation.isDictionaryInitialized()
TRUEFALSE
yes
Evaluation Count:54
yes
Evaluation Count:93
54-93
435 relation.populateDictionary();
executed: relation.populateDictionary();
Execution Count:54
54
436 -
437 //only perform a dictionary lookup for the display value -
438 //when the value at index has been changed or added. -
439 //At an unmodified index, the underlying model will -
440 //already have the correct display value. -
441 if (d->strategy != OnFieldChange) {
evaluated: d->strategy != OnFieldChange
TRUEFALSE
yes
Evaluation Count:146
yes
Evaluation Count:1
1-146
442 const QSqlTableModelPrivate::ModifiedRow row = d->cache.value(index.row());
executed (the execution status of this line is deduced): const QSqlTableModelPrivate::ModifiedRow row = d->cache.value(index.row());
-
443 if (row.op() != QSqlTableModelPrivate::None && row.rec().isGenerated(index.column())) {
evaluated: row.op() != QSqlTableModelPrivate::None
TRUEFALSE
yes
Evaluation Count:60
yes
Evaluation Count:86
evaluated: row.rec().isGenerated(index.column())
TRUEFALSE
yes
Evaluation Count:29
yes
Evaluation Count:31
29-86
444 if (d->strategy == OnManualSubmit || row.op() != QSqlTableModelPrivate::Delete) {
evaluated: d->strategy == OnManualSubmit
TRUEFALSE
yes
Evaluation Count:16
yes
Evaluation Count:13
partially evaluated: row.op() != QSqlTableModelPrivate::Delete
TRUEFALSE
yes
Evaluation Count:13
no
Evaluation Count:0
0-16
445 QVariant v = row.rec().value(index.column());
executed (the execution status of this line is deduced): QVariant v = row.rec().value(index.column());
-
446 if (v.isValid())
partially evaluated: v.isValid()
TRUEFALSE
yes
Evaluation Count:29
no
Evaluation Count:0
0-29
447 return relation.dictionary[v.toString()];
executed: return relation.dictionary[v.toString()];
Execution Count:29
29
448 }
never executed: }
0
449 }
never executed: }
0
450 }
executed: }
Execution Count:117
117
451 }
executed: }
Execution Count:118
118
452 return QSqlTableModel::data(index, role);
executed: return QSqlTableModel::data(index, role);
Execution Count:307
307
453} -
454 -
455/*! -
456 Sets the data for the \a role in the item with the specified \a -
457 index to the \a value given. Depending on the edit strategy, the -
458 value might be applied to the database at once, or it may be -
459 cached in the model. -
460 -
461 Returns true if the value could be set, or false on error (for -
462 example, if \a index is out of bounds). -
463 -
464 For relational columns, \a value must be the index, not the -
465 display value. The index must also exist in the referenced -
466 table, otherwise the function returns false. -
467 -
468 \sa editStrategy(), data(), submit(), revertRow() -
469*/ -
470bool QSqlRelationalTableModel::setData(const QModelIndex &index, const QVariant &value, -
471 int role) -
472{ -
473 Q_D(QSqlRelationalTableModel);
executed (the execution status of this line is deduced): QSqlRelationalTableModelPrivate * const d = d_func();
-
474 if ( role == Qt::EditRole && index.column() > 0 && index.column() < d->relations.count()
partially evaluated: role == Qt::EditRole
TRUEFALSE
yes
Evaluation Count:85
no
Evaluation Count:0
evaluated: index.column() > 0
TRUEFALSE
yes
Evaluation Count:63
yes
Evaluation Count:22
evaluated: index.column() < d->relations.count()
TRUEFALSE
yes
Evaluation Count:59
yes
Evaluation Count:4
0-85
475 && d->relations.value(index.column()).isValid()) {
evaluated: d->relations.value(index.column()).isValid()
TRUEFALSE
yes
Evaluation Count:44
yes
Evaluation Count:15
15-44
476 QRelation &relation = d->relations[index.column()];
executed (the execution status of this line is deduced): QRelation &relation = d->relations[index.column()];
-
477 if (!relation.isDictionaryInitialized())
evaluated: !relation.isDictionaryInitialized()
TRUEFALSE
yes
Evaluation Count:11
yes
Evaluation Count:33
11-33
478 relation.populateDictionary();
executed: relation.populateDictionary();
Execution Count:11
11
479 if (!relation.dictionary.contains(value.toString()))
evaluated: !relation.dictionary.contains(value.toString())
TRUEFALSE
yes
Evaluation Count:2
yes
Evaluation Count:42
2-42
480 return false;
executed: return false;
Execution Count:2
2
481 }
executed: }
Execution Count:42
42
482 return QSqlTableModel::setData(index, value, role);
executed: return QSqlTableModel::setData(index, value, role);
Execution Count:83
83
483} -
484 -
485/*! -
486 Lets the specified \a column be a foreign index specified by \a relation. -
487 -
488 Example: -
489 -
490 \snippet relationaltablemodel/relationaltablemodel.cpp 0 -
491 \codeline -
492 \snippet relationaltablemodel/relationaltablemodel.cpp 1 -
493 -
494 The setRelation() call specifies that column 2 in table \c -
495 employee is a foreign key that maps with field \c id of table \c -
496 city, and that the view should present the \c{city}'s \c name -
497 field to the user. -
498 -
499 Note: The table's primary key may not contain a relation to another table. -
500 -
501 \sa relation() -
502*/ -
503void QSqlRelationalTableModel::setRelation(int column, const QSqlRelation &relation) -
504{ -
505 Q_D(QSqlRelationalTableModel);
executed (the execution status of this line is deduced): QSqlRelationalTableModelPrivate * const d = d_func();
-
506 if (column < 0)
partially evaluated: column < 0
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:44
0-44
507 return;
never executed: return;
0
508 if (d->relations.size() <= column)
evaluated: d->relations.size() <= column
TRUEFALSE
yes
Evaluation Count:41
yes
Evaluation Count:3
3-41
509 d->relations.resize(column + 1);
executed: d->relations.resize(column + 1);
Execution Count:41
41
510 d->relations[column].init(this, relation);
executed (the execution status of this line is deduced): d->relations[column].init(this, relation);
-
511}
executed: }
Execution Count:44
44
512 -
513/*! -
514 Returns the relation for the column \a column, or an invalid -
515 relation if no relation is set. -
516 -
517 \sa setRelation(), QSqlRelation::isValid() -
518*/ -
519QSqlRelation QSqlRelationalTableModel::relation(int column) const -
520{ -
521 Q_D(const QSqlRelationalTableModel);
never executed (the execution status of this line is deduced): const QSqlRelationalTableModelPrivate * const d = d_func();
-
522 return d->relations.value(column).rel;
never executed: return d->relations.value(column).rel;
0
523} -
524 -
525QString QSqlRelationalTableModelPrivate::fullyQualifiedFieldName(const QString &tableName, -
526 const QString &fieldName) const -
527{ -
528 QString ret;
executed (the execution status of this line is deduced): QString ret;
-
529 ret.reserve(tableName.size() + fieldName.size() + 1);
executed (the execution status of this line is deduced): ret.reserve(tableName.size() + fieldName.size() + 1);
-
530 ret.append(tableName).append(QLatin1Char('.')).append(fieldName);
executed (the execution status of this line is deduced): ret.append(tableName).append(QLatin1Char('.')).append(fieldName);
-
531 -
532 return ret;
executed: return ret;
Execution Count:512
512
533} -
534 -
535/*! -
536 \reimp -
537*/ -
538QString QSqlRelationalTableModel::selectStatement() const -
539{ -
540 Q_D(const QSqlRelationalTableModel);
executed (the execution status of this line is deduced): const QSqlRelationalTableModelPrivate * const d = d_func();
-
541 -
542 if (tableName().isEmpty())
partially evaluated: tableName().isEmpty()
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:89
0-89
543 return QString();
never executed: return QString();
0
544 if (d->relations.isEmpty())
evaluated: d->relations.isEmpty()
TRUEFALSE
yes
Evaluation Count:5
yes
Evaluation Count:84
5-84
545 return QSqlTableModel::selectStatement();
executed: return QSqlTableModel::selectStatement();
Execution Count:5
5
546 -
547 // Count how many times each field name occurs in the record -
548 QHash<QString, int> fieldNames;
executed (the execution status of this line is deduced): QHash<QString, int> fieldNames;
-
549 QStringList fieldList;
executed (the execution status of this line is deduced): QStringList fieldList;
-
550 for (int i = 0; i < d->baseRec.count(); ++i) {
evaluated: i < d->baseRec.count()
TRUEFALSE
yes
Evaluation Count:302
yes
Evaluation Count:84
84-302
551 QSqlRelation relation = d->relations.value(i).rel;
executed (the execution status of this line is deduced): QSqlRelation relation = d->relations.value(i).rel;
-
552 QString name;
executed (the execution status of this line is deduced): QString name;
-
553 if (relation.isValid()) {
evaluated: relation.isValid()
TRUEFALSE
yes
Evaluation Count:103
yes
Evaluation Count:199
103-199
554 // Count the display column name, not the original foreign key -
555 name = relation.displayColumn();
executed (the execution status of this line is deduced): name = relation.displayColumn();
-
556 if (d->db.driver()->isIdentifierEscaped(name, QSqlDriver::FieldName))
evaluated: d->db.driver()->isIdentifierEscaped(name, QSqlDriver::FieldName)
TRUEFALSE
yes
Evaluation Count:10
yes
Evaluation Count:93
10-93
557 name = d->db.driver()->stripDelimiters(name, QSqlDriver::FieldName);
executed: name = d->db.driver()->stripDelimiters(name, QSqlDriver::FieldName);
Execution Count:10
10
558 -
559 const QSqlRecord rec = database().record(relation.tableName());
executed (the execution status of this line is deduced): const QSqlRecord rec = database().record(relation.tableName());
-
560 for (int i = 0; i < rec.count(); ++i) {
partially evaluated: i < rec.count()
TRUEFALSE
yes
Evaluation Count:206
no
Evaluation Count:0
0-206
561 if (name.compare(rec.fieldName(i), Qt::CaseInsensitive) == 0) {
evaluated: name.compare(rec.fieldName(i), Qt::CaseInsensitive) == 0
TRUEFALSE
yes
Evaluation Count:103
yes
Evaluation Count:103
103
562 name = rec.fieldName(i);
executed (the execution status of this line is deduced): name = rec.fieldName(i);
-
563 break;
executed: break;
Execution Count:103
103
564 } -
565 }
executed: }
Execution Count:103
103
566 }
executed: }
Execution Count:103
103
567 else { -
568 name = d->baseRec.fieldName(i);
executed (the execution status of this line is deduced): name = d->baseRec.fieldName(i);
-
569 }
executed: }
Execution Count:199
199
570 fieldNames[name] = fieldNames.value(name, 0) + 1;
executed (the execution status of this line is deduced): fieldNames[name] = fieldNames.value(name, 0) + 1;
-
571 fieldList.append(name);
executed (the execution status of this line is deduced): fieldList.append(name);
-
572 }
executed: }
Execution Count:302
302
573 -
574 QString fList;
executed (the execution status of this line is deduced): QString fList;
-
575 QString conditions;
executed (the execution status of this line is deduced): QString conditions;
-
576 QString from = Sql::from(tableName());
executed (the execution status of this line is deduced): QString from = Sql::from(tableName());
-
577 for (int i = 0; i < d->baseRec.count(); ++i) {
evaluated: i < d->baseRec.count()
TRUEFALSE
yes
Evaluation Count:302
yes
Evaluation Count:84
84-302
578 QSqlRelation relation = d->relations.value(i).rel;
executed (the execution status of this line is deduced): QSqlRelation relation = d->relations.value(i).rel;
-
579 const QString tableField = d->fullyQualifiedFieldName(tableName(), d->db.driver()->escapeIdentifier(d->baseRec.fieldName(i), QSqlDriver::FieldName));
executed (the execution status of this line is deduced): const QString tableField = d->fullyQualifiedFieldName(tableName(), d->db.driver()->escapeIdentifier(d->baseRec.fieldName(i), QSqlDriver::FieldName));
-
580 if (relation.isValid()) {
evaluated: relation.isValid()
TRUEFALSE
yes
Evaluation Count:103
yes
Evaluation Count:199
103-199
581 const QString relTableAlias = Sql::relTablePrefix(i);
executed (the execution status of this line is deduced): const QString relTableAlias = Sql::relTablePrefix(i);
-
582 QString displayTableField = d->fullyQualifiedFieldName(relTableAlias, relation.displayColumn());
executed (the execution status of this line is deduced): QString displayTableField = d->fullyQualifiedFieldName(relTableAlias, relation.displayColumn());
-
583 -
584 // Duplicate field names must be aliased -
585 if (fieldNames.value(fieldList[i]) > 1) {
evaluated: fieldNames.value(fieldList[i]) > 1
TRUEFALSE
yes
Evaluation Count:23
yes
Evaluation Count:80
23-80
586 QString relTableName = relation.tableName().section(QChar::fromLatin1('.'), -1, -1);
executed (the execution status of this line is deduced): QString relTableName = relation.tableName().section(QChar::fromLatin1('.'), -1, -1);
-
587 if (d->db.driver()->isIdentifierEscaped(relTableName, QSqlDriver::TableName))
partially evaluated: d->db.driver()->isIdentifierEscaped(relTableName, QSqlDriver::TableName)
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:23
0-23
588 relTableName = d->db.driver()->stripDelimiters(relTableName, QSqlDriver::TableName);
never executed: relTableName = d->db.driver()->stripDelimiters(relTableName, QSqlDriver::TableName);
0
589 QString displayColumn = relation.displayColumn();
executed (the execution status of this line is deduced): QString displayColumn = relation.displayColumn();
-
590 if (d->db.driver()->isIdentifierEscaped(displayColumn, QSqlDriver::FieldName))
partially evaluated: d->db.driver()->isIdentifierEscaped(displayColumn, QSqlDriver::FieldName)
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:23
0-23
591 displayColumn = d->db.driver()->stripDelimiters(displayColumn, QSqlDriver::FieldName);
never executed: displayColumn = d->db.driver()->stripDelimiters(displayColumn, QSqlDriver::FieldName);
0
592 const QString alias = QString::fromLatin1("%1_%2_%3").arg(relTableName).arg(displayColumn).arg(fieldNames.value(fieldList[i]));
executed (the execution status of this line is deduced): const QString alias = QString::fromLatin1("%1_%2_%3").arg(relTableName).arg(displayColumn).arg(fieldNames.value(fieldList[i]));
-
593 displayTableField = Sql::as(displayTableField, alias);
executed (the execution status of this line is deduced): displayTableField = Sql::as(displayTableField, alias);
-
594 --fieldNames[fieldList[i]];
executed (the execution status of this line is deduced): --fieldNames[fieldList[i]];
-
595 }
executed: }
Execution Count:23
23
596 -
597 fList = Sql::comma(fList, displayTableField);
executed (the execution status of this line is deduced): fList = Sql::comma(fList, displayTableField);
-
598 -
599 // Join related table -
600 const QString tblexpr = Sql::concat(relation.tableName(), relTableAlias);
executed (the execution status of this line is deduced): const QString tblexpr = Sql::concat(relation.tableName(), relTableAlias);
-
601 const QString relTableField = d->fullyQualifiedFieldName(relTableAlias, relation.indexColumn());
executed (the execution status of this line is deduced): const QString relTableField = d->fullyQualifiedFieldName(relTableAlias, relation.indexColumn());
-
602 const QString cond = Sql::eq(tableField, relTableField);
executed (the execution status of this line is deduced): const QString cond = Sql::eq(tableField, relTableField);
-
603 if (d->joinMode == QSqlRelationalTableModel::InnerJoin) {
evaluated: d->joinMode == QSqlRelationalTableModel::InnerJoin
TRUEFALSE
yes
Evaluation Count:73
yes
Evaluation Count:30
30-73
604 // FIXME: InnerJoin code is known to be broken. -
605 // Use LeftJoin mode if you want correct behavior. -
606 from = Sql::comma(from, tblexpr);
executed (the execution status of this line is deduced): from = Sql::comma(from, tblexpr);
-
607 conditions = Sql::et(conditions, cond);
executed (the execution status of this line is deduced): conditions = Sql::et(conditions, cond);
-
608 } else {
executed: }
Execution Count:73
73
609 from = Sql::concat(from, Sql::leftJoin(tblexpr));
executed (the execution status of this line is deduced): from = Sql::concat(from, Sql::leftJoin(tblexpr));
-
610 from = Sql::concat(from, Sql::on(cond));
executed (the execution status of this line is deduced): from = Sql::concat(from, Sql::on(cond));
-
611 }
executed: }
Execution Count:30
30
612 } else { -
613 fList = Sql::comma(fList, tableField);
executed (the execution status of this line is deduced): fList = Sql::comma(fList, tableField);
-
614 }
executed: }
Execution Count:199
199
615 } -
616 -
617 if (fList.isEmpty())
partially evaluated: fList.isEmpty()
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:84
0-84
618 return QString();
never executed: return QString();
0
619 -
620 const QString stmt = Sql::concat(Sql::select(fList), from);
executed (the execution status of this line is deduced): const QString stmt = Sql::concat(Sql::select(fList), from);
-
621 const QString where = Sql::where(Sql::et(Sql::paren(conditions), Sql::paren(filter())));
executed (the execution status of this line is deduced): const QString where = Sql::where(Sql::et(Sql::paren(conditions), Sql::paren(filter())));
-
622 return Sql::concat(Sql::concat(stmt, where), orderByClause());
executed: return Sql::concat(Sql::concat(stmt, where), orderByClause());
Execution Count:84
84
623} -
624 -
625/*! -
626 Returns a QSqlTableModel object for accessing the table for which -
627 \a column is a foreign key, or 0 if there is no relation for the -
628 given \a column. -
629 -
630 The returned object is owned by the QSqlRelationalTableModel. -
631 -
632 \sa setRelation(), relation() -
633*/ -
634QSqlTableModel *QSqlRelationalTableModel::relationModel(int column) const -
635{ -
636 Q_D(const QSqlRelationalTableModel);
executed (the execution status of this line is deduced): const QSqlRelationalTableModelPrivate * const d = d_func();
-
637 if ( column < 0 || column >= d->relations.count())
partially evaluated: column < 0
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:20
evaluated: column >= d->relations.count()
TRUEFALSE
yes
Evaluation Count:4
yes
Evaluation Count:16
0-20
638 return 0;
executed: return 0;
Execution Count:4
4
639 -
640 QRelation &relation = const_cast<QSqlRelationalTableModelPrivate *>(d)->relations[column];
executed (the execution status of this line is deduced): QRelation &relation = const_cast<QSqlRelationalTableModelPrivate *>(d)->relations[column];
-
641 if (!relation.isValid())
evaluated: !relation.isValid()
TRUEFALSE
yes
Evaluation Count:6
yes
Evaluation Count:10
6-10
642 return 0;
executed: return 0;
Execution Count:6
6
643 -
644 if (!relation.model)
evaluated: !relation.model
TRUEFALSE
yes
Evaluation Count:3
yes
Evaluation Count:7
3-7
645 relation.populateModel();
executed: relation.populateModel();
Execution Count:3
3
646 return relation.model;
executed: return relation.model;
Execution Count:10
10
647} -
648 -
649/*! -
650 \reimp -
651*/ -
652void QSqlRelationalTableModel::revertRow(int row) -
653{ -
654 QSqlTableModel::revertRow(row);
executed (the execution status of this line is deduced): QSqlTableModel::revertRow(row);
-
655}
executed: }
Execution Count:19
19
656 -
657/*! -
658 \reimp -
659*/ -
660void QSqlRelationalTableModel::clear() -
661{ -
662 Q_D(QSqlRelationalTableModel);
executed (the execution status of this line is deduced): QSqlRelationalTableModelPrivate * const d = d_func();
-
663 d->clearChanges();
executed (the execution status of this line is deduced): d->clearChanges();
-
664 d->relations.clear();
executed (the execution status of this line is deduced): d->relations.clear();
-
665 QSqlTableModel::clear();
executed (the execution status of this line is deduced): QSqlTableModel::clear();
-
666}
executed: }
Execution Count:32
32
667 -
668 -
669/*! \enum QSqlRelationalTableModel::JoinMode -
670 -
671 \value InnerJoin - Inner join mode, return rows when there is at least one match in both tables. -
672 \value LeftJoin - Left join mode, returns all rows from the left table (table_name1), even if there are no matches in the right table (table_name2). -
673 -
674 \sa QSqlRelationalTableModel::setJoinMode -
675 \since 4.8 -
676*/ -
677 -
678/*! -
679 Sets the SQL \a joinMode to show or hide rows with NULL foreign keys. -
680 In InnerJoin mode (the default) these rows will not be shown: use the -
681 LeftJoin mode if you want to show them. -
682 -
683 \sa QSqlRelationalTableModel::JoinMode -
684 \since 4.8 -
685*/ -
686void QSqlRelationalTableModel::setJoinMode( QSqlRelationalTableModel::JoinMode joinMode ) -
687{ -
688 Q_D(QSqlRelationalTableModel);
executed (the execution status of this line is deduced): QSqlRelationalTableModelPrivate * const d = d_func();
-
689 d->joinMode = joinMode;
executed (the execution status of this line is deduced): d->joinMode = joinMode;
-
690}
executed: }
Execution Count:23
23
691/*! -
692 \reimp -
693*/ -
694bool QSqlRelationalTableModel::select() -
695{ -
696 return QSqlTableModel::select();
executed: return QSqlTableModel::select();
Execution Count:74
74
697} -
698 -
699/*! -
700 \reimp -
701*/ -
702void QSqlRelationalTableModel::setTable(const QString &table) -
703{ -
704 Q_D(QSqlRelationalTableModel);
executed (the execution status of this line is deduced): QSqlRelationalTableModelPrivate * const d = d_func();
-
705 -
706 // memorize the table before applying the relations -
707 d->baseRec = d->db.record(table);
executed (the execution status of this line is deduced): d->baseRec = d->db.record(table);
-
708 -
709 QSqlTableModel::setTable(table);
executed (the execution status of this line is deduced): QSqlTableModel::setTable(table);
-
710}
executed: }
Execution Count:32
32
711 -
712/*! \internal -
713 */ -
714void QSqlRelationalTableModelPrivate::translateFieldNames(QSqlRecord &values) const -
715{ -
716 for (int i = 0; i < values.count(); ++i) {
evaluated: i < values.count()
TRUEFALSE
yes
Evaluation Count:93
yes
Evaluation Count:26
26-93
717 if (relations.value(i).isValid()) {
evaluated: relations.value(i).isValid()
TRUEFALSE
yes
Evaluation Count:34
yes
Evaluation Count:59
34-59
718 QVariant v = values.value(i);
executed (the execution status of this line is deduced): QVariant v = values.value(i);
-
719 bool gen = values.isGenerated(i);
executed (the execution status of this line is deduced): bool gen = values.isGenerated(i);
-
720 values.replace(i, baseRec.field(i));
executed (the execution status of this line is deduced): values.replace(i, baseRec.field(i));
-
721 values.setValue(i, v);
executed (the execution status of this line is deduced): values.setValue(i, v);
-
722 values.setGenerated(i, gen);
executed (the execution status of this line is deduced): values.setGenerated(i, gen);
-
723 }
executed: }
Execution Count:34
34
724 }
executed: }
Execution Count:93
93
725}
executed: }
Execution Count:26
26
726 -
727/*! -
728 \reimp -
729*/ -
730bool QSqlRelationalTableModel::updateRowInTable(int row, const QSqlRecord &values) -
731{ -
732 Q_D(QSqlRelationalTableModel);
executed (the execution status of this line is deduced): QSqlRelationalTableModelPrivate * const d = d_func();
-
733 -
734 QSqlRecord rec = values;
executed (the execution status of this line is deduced): QSqlRecord rec = values;
-
735 d->translateFieldNames(rec);
executed (the execution status of this line is deduced): d->translateFieldNames(rec);
-
736 -
737 return QSqlTableModel::updateRowInTable(row, rec);
executed: return QSqlTableModel::updateRowInTable(row, rec);
Execution Count:19
19
738} -
739 -
740/*! -
741 \reimp -
742*/ -
743bool QSqlRelationalTableModel::insertRowIntoTable(const QSqlRecord &values) -
744{ -
745 Q_D(QSqlRelationalTableModel);
executed (the execution status of this line is deduced): QSqlRelationalTableModelPrivate * const d = d_func();
-
746 -
747 QSqlRecord rec = values;
executed (the execution status of this line is deduced): QSqlRecord rec = values;
-
748 d->translateFieldNames(rec);
executed (the execution status of this line is deduced): d->translateFieldNames(rec);
-
749 -
750 return QSqlTableModel::insertRowIntoTable(rec);
executed: return QSqlTableModel::insertRowIntoTable(rec);
Execution Count:7
7
751} -
752 -
753/*! -
754 \reimp -
755*/ -
756QString QSqlRelationalTableModel::orderByClause() const -
757{ -
758 Q_D(const QSqlRelationalTableModel);
executed (the execution status of this line is deduced): const QSqlRelationalTableModelPrivate * const d = d_func();
-
759 -
760 const QSqlRelation rel = d->relations.value(d->sortColumn).rel;
executed (the execution status of this line is deduced): const QSqlRelation rel = d->relations.value(d->sortColumn).rel;
-
761 if (!rel.isValid())
evaluated: !rel.isValid()
TRUEFALSE
yes
Evaluation Count:85
yes
Evaluation Count:4
4-85
762 return QSqlTableModel::orderByClause();
executed: return QSqlTableModel::orderByClause();
Execution Count:85
85
763 -
764 QString f = d->fullyQualifiedFieldName(Sql::relTablePrefix(d->sortColumn), rel.displayColumn());
executed (the execution status of this line is deduced): QString f = d->fullyQualifiedFieldName(Sql::relTablePrefix(d->sortColumn), rel.displayColumn());
-
765 f = d->sortOrder == Qt::AscendingOrder ? Sql::asc(f) : Sql::desc(f);
evaluated: d->sortOrder == Qt::AscendingOrder
TRUEFALSE
yes
Evaluation Count:2
yes
Evaluation Count:2
2
766 return Sql::orderBy(f);
executed: return Sql::orderBy(f);
Execution Count:4
4
767} -
768 -
769/*! -
770 \reimp -
771*/ -
772bool QSqlRelationalTableModel::removeColumns(int column, int count, const QModelIndex &parent) -
773{ -
774 Q_D(QSqlRelationalTableModel);
executed (the execution status of this line is deduced): QSqlRelationalTableModelPrivate * const d = d_func();
-
775 -
776 if (parent.isValid() || column < 0 || column + count > d->rec.count())
partially evaluated: parent.isValid()
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:4
partially evaluated: column < 0
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:4
partially evaluated: column + count > d->rec.count()
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:4
0-4
777 return false;
never executed: return false;
0
778 -
779 for (int i = 0; i < count; ++i) {
evaluated: i < count
TRUEFALSE
yes
Evaluation Count:6
yes
Evaluation Count:4
4-6
780 d->baseRec.remove(column);
executed (the execution status of this line is deduced): d->baseRec.remove(column);
-
781 if (d->relations.count() > column)
evaluated: d->relations.count() > column
TRUEFALSE
yes
Evaluation Count:4
yes
Evaluation Count:2
2-4
782 d->relations.remove(column);
executed: d->relations.remove(column);
Execution Count:4
4
783 }
executed: }
Execution Count:6
6
784 return QSqlTableModel::removeColumns(column, count, parent);
executed: return QSqlTableModel::removeColumns(column, count, parent);
Execution Count:4
4
785} -
786 -
787QT_END_NAMESPACE -
788 -
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