本文整理汇总了C++中Q3SqlCursor类的典型用法代码示例。如果您正苦于以下问题：C++ Q3SqlCursor类的具体用法？C++ Q3SqlCursor怎么用？C++ Q3SqlCursor使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Q3SqlCursor类的11个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: primeDelete
void Q3DataBrowser::del()
{
QSqlRecord* buf = d->frm.record();
Q3SqlCursor* cur = d->cur.cursor();
if (!buf || !cur)
return;
QSql::Confirm conf = QSql::Yes;
switch (d->dat.mode()){
case QSql::Insert:
if (confirmCancels())
conf = confirmCancel(QSql::Insert);
if (conf == QSql::Yes) {
cur->editBuffer(true); /* restore from cursor */
readFields();
d->dat.setMode(QSql::Update);
} else
d->dat.setMode(QSql::Insert);
break;
default:
if (confirmDelete())
conf = confirmEdit(QSql::Delete);
switch (conf) {
case QSql::Yes:
emit primeDelete(buf);
deleteCurrent();
break;
case QSql::No:
case QSql::Cancel:
break;
}
d->dat.setMode(QSql::Update);
break;
}
}示例2: cursor
bool Q3SqlCursorManager::refresh()
{
Q3SqlCursor* cur = cursor();
if (!cur)
return false;
QString currentFilter = d->ftr;
QStringList currentSort = d->srt;
QSqlIndex newSort = indexFromStringList(currentSort, cur);
return cur->select(currentFilter, newSort);
}示例3: postNav
bool Q3DataBrowser::seek(int i, bool relative)
{
int b = 0;
Q3SqlCursor* cur = d->cur.cursor();
if (!cur)
return false;
if (preNav())
b = cur->seek(i, relative);
postNav(b);
return b;
}示例4: primeUpdate
void Q3DataBrowser::postNav(bool primeUpd)
{
if (primeUpd) {
QSqlRecord* buf = d->frm.record();
Q3SqlCursor* cur = d->cur.cursor();
if (!buf || !cur)
return;
currentChanged(cur);
cur->primeUpdate();
emit primeUpdate(buf);
readFields();
}
updateBoundary();
}示例5: writeFields
bool Q3DataBrowser::deleteCurrent()
{
if (isReadOnly())
return false;
QSqlRecord* buf = d->frm.record();
Q3SqlCursor* cur = d->cur.cursor();
if (!buf || !cur)
return false;
writeFields();
int n = cur->at();
emit beforeDelete(buf);
int ar = cur->del();
if (ar) {
refresh();
updateBoundary();
cursorChanged(Q3SqlCursor::Delete);
if (!cur->seek(n))
last();
if (cur->isValid()) {
cur->editBuffer(true);
readFields();
} else {
clearValues();
}
return true;
} else {
if (!cur->isActive()) {
handleError(cur->lastError());
refresh();
updateBoundary();
}
}
return false;
}示例6: switch
void Q3DataBrowser::update()
{
QSqlRecord* buf = d->frm.record();
Q3SqlCursor* cur = d->cur.cursor();
if (!buf || !cur)
return;
QSql::Confirm conf = QSql::Yes;
switch (d->dat.mode()){
case QSql::Insert:
if (confirmInsert())
conf = confirmEdit(QSql::Insert);
switch (conf) {
case QSql::Yes:
if (insertCurrent())
d->dat.setMode(QSql::Update);
break;
case QSql::No:
d->dat.setMode(QSql::Update);
cur->editBuffer(true);
readFields();
break;
case QSql::Cancel:
break;
}
break;
default:
d->dat.setMode(QSql::Update);
if (confirmUpdate())
conf = confirmEdit(QSql::Update);
switch (conf) {
case QSql::Yes:
updateCurrent();
break;
case QSql::No:
case QSql::Cancel:
break;
}
break;
}
}示例7: QSqlRecord
Q3SqlCursor::Q3SqlCursor(const Q3SqlCursor & other)
: QSqlRecord(other), QSqlQuery(other)
{
d = new Q3SqlCursorPrivate(other.d->nm, other.d->db);
d->lastAt = other.d->lastAt;
d->nm = other.d->nm;
d->srt = other.d->srt;
d->ftr = other.d->ftr;
d->priIndx = other.d->priIndx;
d->editBuffer = other.d->editBuffer;
d->infoBuffer = other.d->infoBuffer;
d->q = 0; // do not share queries
setMode(other.mode());
}示例8: qDebug
//## possibly add sizeHint parameter
bool Q3SqlCursorManager::findBuffer(const QSqlIndex& idx, int atHint)
{
#ifdef QT_DEBUG_DATAMANAGER
qDebug("Q3SqlCursorManager::findBuffer:");
#endif
Q3SqlCursor* cur = cursor();
if (!cur)
return false;
if (!cur->isActive())
return false;
if (!idx.count()) {
if (cur->at() == QSql::BeforeFirst)
cur->next();
return false;
}
QSqlRecord* buf = cur->editBuffer();
bool indexEquals = false;
#ifdef QT_DEBUG_DATAMANAGER
qDebug(" Checking hint...");
#endif
/* check the hint */
if (cur->seek(atHint))
indexEquals = index_matches(cur, buf, idx);
if (!indexEquals) {
#ifdef QT_DEBUG_DATAMANAGER
qDebug(" Checking current page...");
#endif
/* check current page */
int pageSize = 20;
int startIdx = qMax(atHint - pageSize, 0);
int endIdx = atHint + pageSize;
for (int j = startIdx; j <= endIdx; ++j) {
if (cur->seek(j)) {
indexEquals = index_matches(cur, buf, idx);
if (indexEquals)
break;
}
}
}
if (!indexEquals && cur->driver()->hasFeature(QSqlDriver::QuerySize)
&& cur->sort().count()) {
#ifdef QT_DEBUG_DATAMANAGER
qDebug(" Using binary search...");
#endif
// binary search based on record buffer and current sort fields
int lo = 0;
int hi = cur->size();
int mid;
if (compare_recs(buf, cur, cur->sort()) >= 0)
lo = cur->at();
while (lo != hi) {
mid = lo + (hi - lo) / 2;
if (!cur->seek(mid))
break;
if (index_matches(cur, buf, idx)) {
indexEquals = true;
break;
}
int c = compare_recs(buf, cur, cur->sort());
if (c < 0) {
hi = mid;
} else if (c == 0) {
// found it, but there may be duplicates
int at = mid;
do {
mid--;
if (!cur->seek(mid))
break;
if (index_matches(cur, buf, idx)) {
indexEquals = true;
break;
}
} while (compare_recs(buf, cur, cur->sort()) == 0);
if (!indexEquals) {
mid = at;
do {
mid++;
if (!cur->seek(mid))
break;
if (index_matches(cur, buf, idx)) {
indexEquals = true;
break;
}
} while (compare_recs(buf, cur, cur->sort()) == 0);
}
break;
} else if (c > 0) {
lo = mid + 1;
}
}
}
if (!indexEquals) {
#ifdef QT_DEBUG_DATAMANAGER
qDebug(" Using brute search...");
#endif
//.........这里部分代码省略.........
示例9:
Q3DataBrowser::Boundary Q3DataBrowser::boundary()
{
Q3SqlCursor* cur = d->cur.cursor();
if (!cur || !cur->isActive())
return Unknown;
if (!cur->isValid()) {
if (cur->at() == QSql::BeforeFirst)
return BeforeBeginning;
if (cur->at() == QSql::AfterLast)
return AfterEnd;
return Unknown;
}
if (cur->at() == 0)
return Beginning;
int currentAt = cur->at();
Boundary b = None;
if (!cur->previous())
b = Beginning;
else
cur->seek(currentAt);
if (b == None && !cur->next())
b = End;
cur->seek(currentAt);
return b;
}示例10: sqlCursor
/*!
* \~english
* Return system icon for display object record state.
* \russian
* Возвращает иконку для отображения состояния строки.
* \~
*/
QPixmap
wDBTable::systemIcon()
{
aWidget *container = aWidget::parentContainer( this );
QString ctype="";
QPixmap pm;
Q3SqlCursor *r = sqlCursor();
int df=0, cf=0, mf=0;
if ( container ) ctype = container->className();
if ( r )
{
if ( r->contains("df") ) df = r->field("df").value().toInt();
if ( r->contains("cf") ) cf = r->field("cf").value().toInt();
else
{
if(ctype=="wJournal")
{
aDocJournal* sysObj = new aDocJournal(db);
if(sysObj)
{
//for(int i=0; i<r->count(); i++)
// printf("f[%d]=%s, %s\n",i, r->fieldName(i).ascii(), r->field(i)->value().toString().ascii());
if(sysObj->findDocument(r->field("id").value().toULongLong()))
{
aDocument *doc = sysObj->CurrentDocument();
cf = doc->IsConducted();
delete doc;
}
else
{
printf(">>doc select failed!\n");
}
//doc = 0;
//cf = sysObj->sysValue("cf").toInt();
}
delete sysObj;
}
//>>>>>>> 1.71.2.13
}
if ( r->contains("mf") ) mf = r->field("mf").value().toInt();
if(ctype=="wJournal")
{
pm = t_doc;
if ( df ) pm = t_doc_d;
if ( cf && !df ) pm = t_doc_t;
if ( mf && !df ) pm = t_doc_m;
if ( cf && mf && !df ) pm = t_doc_tm;
}
else
if(ctype=="wCatalogue")
{
pm = t_cat_e;
if ( df ) pm = t_cat_ed;
}
else
if(ctype=="wCatGroupe")
{
pm = t_cat_g;
if ( df ) pm = t_cat_gd;
}
}
return pm;
}示例11: myEditor
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
//! [0]
QLineEdit myEditor(this);
Q3SqlForm myForm(this);
Q3SqlCursor myCursor("mytable");
// Execute a query to make the cursor valid
myCursor.select();
// Move the cursor to a valid record (the first record)
myCursor.next();
// Set the form's record pointer to the cursor's edit buffer (which
// contains the current record's values)
myForm.setRecord(myCursor.primeUpdate());
// Insert a field into the form that uses myEditor to edit the
// field 'somefield' in 'mytable'
myForm.insert(&myEditor, "somefield");
// Update myEditor with the value from the mapped database field
myForm.readFields();