本文整理汇总了C++中QSqlIndex::contains方法的典型用法代码示例。如果您正苦于以下问题：C++ QSqlIndex::contains方法的具体用法？C++ QSqlIndex::contains怎么用？C++ QSqlIndex::contains使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QSqlIndex的用法示例。
在下文中一共展示了QSqlIndex::contains方法的1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: LoadTableColumns
void ODBC_Connection::LoadTableColumns(QTreeWidgetItem *item)
{
for (int i = 0, count = item->childCount(); i < count; i++)
item->removeChild(item->child(0));
QString sTableName = item->text(0);
if (m_db.isOpen())
{
if (!m_db.tables().contains(sTableName)) // if it isnt a table, return
return;
// set wait cursor
QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
QApplication::processEvents();
Logging::getInstance()->WriteLog(INFORMATION, QString("Retrieving tableinfo for table \"%1\" of connection \"%2\"...").arg(sTableName, m_sConnectionName));
bool bTableWarningShown = false;
QSqlRecord records = m_db.record(sTableName);
QSqlField field;
QSqlIndex index = m_db.primaryIndex(sTableName);
QString sName;
QSqlQuery query;
QString sTypeName;
QString sLength;
QString sNullable;
for (int i = 0, count = records.count(); i < count; i++)
{
field = records.field(i);
sName = field.name();
query = m_db.exec(QString("SELECT DATA_TYPE, CHARACTER_MAXIMUM_LENGTH, NUMERIC_PRECISION, IS_NULLABLE FROM INFORMATION_SCHEMA.COLUMNS WHERE COLUMN_NAME = '%1' AND TABLE_NAME = '%2'").arg(sName, sTableName));
if (query.next())
{
sTypeName = query.value(0).toString();
sLength = query.value(1).toString() != "0" ? query.value(1).toString() : query.value(2).toString();
sNullable = query.value(3).toString();
query.finish();
}
else
{
if (!bTableWarningShown)
{
Logging::getInstance()->WriteLog(WARNING, QString("Couldn't retrieve fieldinfo for table \"%1\" of connection \"%2\", database INFORMATION_SCHEMA.COLUMNS doesn't exist, starting fallback to manual type detection").arg(sTableName, m_sConnectionName));
#ifdef _DEBUG
qDebug() << QString("Couldn't retrieve fieldinfo for table \"%1\" of connection \"%2\", database INFORMATION_SCHEMA.COLUMNS doesn't exist, starting fallback to manual type detection").arg(sTableName, m_sConnectionName);
#endif
bTableWarningShown = true;
}
sTypeName = QVariant::typeToName(field.type());
sLength = QString().setNum(field.length());
sNullable = (field.requiredStatus() == 1 ? "YES" : "NO");
}
bool isPrimaryKey = index.contains(sName) ? true : false;
QTreeWidgetItem *pItem = new QTreeWidgetItem();
if (isPrimaryKey)
{
pItem->setText(0, QString("%1 (PS, %2(%3), %4)").arg(sName, sTypeName, sLength, (sNullable == "YES" ? "NULL" : "NOT NULL")));
pItem->setIcon(0, QIcon(":/ODBC_Query/Resources/primary_key.png"));
}
else
{
pItem->setText(0, QString("%1 (%2(%3), %4)").arg(sName, sTypeName, sLength, (sNullable == "YES" ? "NULL" : "NOT NULL")));
pItem->setIcon(0, QIcon(":/ODBC_Query/Resources/row.png"));
}
item->addChild(pItem);
}
m_ui.TableTreeWidget->expandItem(item);
Logging::getInstance()->WriteLog(INFORMATION, QString("Tableinfo for table \"%1\" of connection \"%2\" retrieved").arg(sTableName, m_sConnectionName));
}
else
{
Logging::getInstance()->WriteLog(ERR, QString("Couldn't retrieve tableinfo for table \"%1\" of connection \"%2\", connection isn't open").arg(sTableName, m_sConnectionName));
#ifdef _DEBUG
qDebug() << QString("Couldn't retrieve tableinfo for table \"%1\" of connection \"%2\", connection isn't open").arg(sTableName, m_sConnectionName);
#endif
}
// set back to arrow cursor
QApplication::restoreOverrideCursor();
}