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qgsdb2sourceselect.cpp
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qgsdb2sourceselect.cpp
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/***************************************************************************
qgsdb2sourceselect.cpp
dialog to select DB2 layer(s) and add to the map canvas
--------------------------------------
Date : 2016-01-27
Copyright : (C) 2016 by David Adler
Shirley Xiao, David Nguyen
Email : dadler at adtechgeospatial.com
xshirley2012 at yahoo.com, davidng0123 at gmail.com
Adapted from MSSQL provider by Tamas Szekeres
****************************************************************************
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
***************************************************************************/
#include "qgsdb2sourceselect.h"
#include "qgsdb2dataitems.h"
#include "qgsdb2provider.h"
#include "qgsdb2newconnection.h"
#include "qgsdb2geometrycolumns.h"
#include "qgslogger.h"
#include "qgsapplication.h"
#include "qgsmanageconnectionsdialog.h"
#include "qgsquerybuilder.h"
#include "qgsdatasourceuri.h"
#include "qgsvectorlayer.h"
#include "qgssettings.h"
#include <QFileDialog>
#include <QMessageBox>
#include <QStringList>
#include <QSqlDatabase>
//! Used to create an editor for when the user tries to change the contents of a cell
QWidget *QgsDb2SourceSelectDelegate::createEditor( QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const
{
Q_UNUSED( option );
if ( index.column() == QgsDb2TableModel::DbtmSql )
{
QLineEdit *le = new QLineEdit( parent );
le->setText( index.data( Qt::DisplayRole ).toString() );
return le;
}
if ( index.column() == QgsDb2TableModel::DbtmType && index.data( Qt::UserRole + 1 ).toBool() )
{
QComboBox *cb = new QComboBox( parent );
Q_FOREACH ( QgsWkbTypes::Type type,
QList<QgsWkbTypes::Type>()
<< QgsWkbTypes::Point
<< QgsWkbTypes::LineString
<< QgsWkbTypes::Polygon
<< QgsWkbTypes::MultiPoint
<< QgsWkbTypes::MultiLineString
<< QgsWkbTypes::MultiPolygon
<< QgsWkbTypes::NoGeometry )
{
cb->addItem( QgsDb2TableModel::iconForWkbType( type ), QgsWkbTypes::displayString( type ), type );
}
cb->setCurrentIndex( cb->findData( index.data( Qt::UserRole + 2 ).toInt() ) );
return cb;
}
if ( index.column() == QgsDb2TableModel::DbtmPkCol )
{
QStringList values = index.data( Qt::UserRole + 1 ).toStringList();
if ( values.size() > 0 )
{
QComboBox *cb = new QComboBox( parent );
cb->addItems( values );
cb->setCurrentIndex( cb->findText( index.data( Qt::DisplayRole ).toString() ) );
return cb;
}
}
if ( index.column() == QgsDb2TableModel::DbtmSrid )
{
QLineEdit *le = new QLineEdit( parent );
le->setValidator( new QIntValidator( -1, 999999, parent ) );
le->insert( index.data( Qt::DisplayRole ).toString() );
return le;
}
return 0;
}
void QgsDb2SourceSelectDelegate::setModelData( QWidget *editor, QAbstractItemModel *model, const QModelIndex &index ) const
{
QComboBox *cb = qobject_cast<QComboBox *>( editor );
if ( cb )
{
if ( index.column() == QgsDb2TableModel::DbtmType )
{
QgsWkbTypes::Type type = ( QgsWkbTypes::Type ) cb->currentData().toInt();
model->setData( index, QgsDb2TableModel::iconForWkbType( type ), Qt::DecorationRole );
model->setData( index, type != QgsWkbTypes::Unknown ? QgsWkbTypes::displayString( type ) : tr( "Select..." ) );
model->setData( index, type, Qt::UserRole + 2 );
}
else if ( index.column() == QgsDb2TableModel::DbtmPkCol )
{
model->setData( index, cb->currentText() );
model->setData( index, cb->currentText(), Qt::UserRole + 2 );
}
}
QLineEdit *le = qobject_cast<QLineEdit *>( editor );
if ( le )
model->setData( index, le->text() );
}
QgsDb2SourceSelect::QgsDb2SourceSelect( QWidget *parent, Qt::WindowFlags fl, QgsProviderRegistry::WidgetMode theWidgetMode )
: QgsAbstractDataSourceWidget( parent, fl, theWidgetMode )
, mColumnTypeThread( NULL )
, mUseEstimatedMetadata( false )
{
setupUi( this );
setupButtons( buttonBox );
connect( buttonBox, &QDialogButtonBox::helpRequested, this, &QgsDb2SourceSelect::showHelp );
setWindowTitle( tr( "Add Db2 Table(s)" ) );
if ( widgetMode() != QgsProviderRegistry::WidgetMode::None )
{
mHoldDialogOpen->hide();
}
mBuildQueryButton = new QPushButton( tr( "&Set Filter" ) );
mBuildQueryButton->setToolTip( tr( "Set Filter" ) );
mBuildQueryButton->setDisabled( true );
if ( widgetMode() != QgsProviderRegistry::WidgetMode::Manager )
{
buttonBox->addButton( mBuildQueryButton, QDialogButtonBox::ActionRole );
connect( mBuildQueryButton, &QAbstractButton::clicked, this, &QgsDb2SourceSelect::buildQuery );
}
populateConnectionList();
mSearchModeComboBox->addItem( tr( "Wildcard" ) );
mSearchModeComboBox->addItem( tr( "RegExp" ) );
mSearchColumnComboBox->addItem( tr( "All" ) );
mSearchColumnComboBox->addItem( tr( "Schema" ) );
mSearchColumnComboBox->addItem( tr( "Table" ) );
mSearchColumnComboBox->addItem( tr( "Type" ) );
mSearchColumnComboBox->addItem( tr( "Geometry column" ) );
mSearchColumnComboBox->addItem( tr( "Primary key column" ) );
mSearchColumnComboBox->addItem( tr( "SRID" ) );
mSearchColumnComboBox->addItem( tr( "Sql" ) );
mProxyModel.setParent( this );
mProxyModel.setFilterKeyColumn( -1 );
mProxyModel.setFilterCaseSensitivity( Qt::CaseInsensitive );
mProxyModel.setSourceModel( &mTableModel );
mTablesTreeView->setModel( &mProxyModel );
mTablesTreeView->setSortingEnabled( true );
mTablesTreeView->setEditTriggers( QAbstractItemView::CurrentChanged );
mTablesTreeView->setItemDelegate( new QgsDb2SourceSelectDelegate( this ) );
connect( mTablesTreeView->selectionModel(), &QItemSelectionModel::selectionChanged, this, &QgsDb2SourceSelect::treeWidgetSelectionChanged );
QgsSettings settings;
mTablesTreeView->setSelectionMode( settings.value( QStringLiteral( "qgis/addDb2DC" ), false ).toBool() ?
QAbstractItemView::ExtendedSelection :
QAbstractItemView::MultiSelection );
//for Qt < 4.3.2, passing -1 to include all model columns
//in search does not seem to work
mSearchColumnComboBox->setCurrentIndex( 2 );
restoreGeometry( settings.value( QStringLiteral( "Windows/Db2SourceSelect/geometry" ) ).toByteArray() );
mHoldDialogOpen->setChecked( settings.value( QStringLiteral( "Windows/Db2SourceSelect/HoldDialogOpen" ), false ).toBool() );
for ( int i = 0; i < mTableModel.columnCount(); i++ )
{
mTablesTreeView->setColumnWidth( i, settings.value( QStringLiteral( "Windows/Db2SourceSelect/columnWidths/%1" ).arg( i ), mTablesTreeView->columnWidth( i ) ).toInt() );
}
//hide the search options by default
//they will be shown when the user ticks
//the search options group box
mSearchLabel->setVisible( false );
mSearchColumnComboBox->setVisible( false );
mSearchColumnsLabel->setVisible( false );
mSearchModeComboBox->setVisible( false );
mSearchModeLabel->setVisible( false );
mSearchTableEdit->setVisible( false );
cbxAllowGeometrylessTables->setDisabled( true );
}
//! Autoconnected SLOTS *
// Slot for adding a new connection
void QgsDb2SourceSelect::on_btnNew_clicked()
{
QgsDb2NewConnection *nc = new QgsDb2NewConnection( this );
if ( nc->exec() )
{
populateConnectionList();
emit connectionsChanged();
}
delete nc;
}
// Slot for deleting an existing connection
void QgsDb2SourceSelect::on_btnDelete_clicked()
{
QString msg = tr( "Are you sure you want to remove the %1 connection and all associated settings?" )
.arg( cmbConnections->currentText() );
if ( QMessageBox::Ok != QMessageBox::information( this, tr( "Confirm Delete" ), msg, QMessageBox::Ok | QMessageBox::Cancel ) )
return;
QgsDb2SourceSelect::deleteConnection( cmbConnections->currentText() );
populateConnectionList();
emit connectionsChanged();
}
void QgsDb2SourceSelect::deleteConnection( const QString &name )
{
QString key = "/Db2/connections/" + name;
QgsSettings settings;
settings.remove( key + "/service" );
settings.remove( key + "/driver" );
settings.remove( key + "/port" );
settings.remove( key + "/host" );
settings.remove( key + "/database" );
settings.remove( key + "/username" );
settings.remove( key + "/password" );
settings.remove( key + "/environment" );
settings.remove( key + "/allowGeometrylessTables" );
settings.remove( key + "/useEstimatedMetadata" );
settings.remove( key + "/saveUsername" );
settings.remove( key + "/savePassword" );
settings.remove( key );
}
void QgsDb2SourceSelect::on_btnSave_clicked()
{
QgsManageConnectionsDialog dlg( this, QgsManageConnectionsDialog::Export, QgsManageConnectionsDialog::DB2 );
dlg.exec();
}
void QgsDb2SourceSelect::on_btnLoad_clicked()
{
QString fileName = QFileDialog::getOpenFileName( this, tr( "Load connections" ), QStringLiteral( "." ),
tr( "XML files (*.xml *XML)" ) );
if ( fileName.isEmpty() )
{
return;
}
QgsManageConnectionsDialog dlg( this, QgsManageConnectionsDialog::Import, QgsManageConnectionsDialog::DB2, fileName );
dlg.exec();
populateConnectionList();
}
// Slot for editing a connection
void QgsDb2SourceSelect::on_btnEdit_clicked()
{
QgsDb2NewConnection *nc = new QgsDb2NewConnection( this, cmbConnections->currentText() );
if ( nc->exec() )
{
populateConnectionList();
emit connectionsChanged();
}
delete nc;
}
//! End Autoconnected SLOTS *
// Remember which database is selected
void QgsDb2SourceSelect::on_cmbConnections_activated( int )
{
// Remember which database was selected.
QgsSettings settings;
settings.setValue( QStringLiteral( "Db2/connections/selected" ), cmbConnections->currentText() );
cbxAllowGeometrylessTables->blockSignals( true );
cbxAllowGeometrylessTables->setChecked( settings.value( "/Db2/connections/" + cmbConnections->currentText() + "/allowGeometrylessTables", false ).toBool() );
cbxAllowGeometrylessTables->blockSignals( false );
}
void QgsDb2SourceSelect::on_cbxAllowGeometrylessTables_stateChanged( int )
{
on_btnConnect_clicked();
}
void QgsDb2SourceSelect::buildQuery()
{
setSql( mTablesTreeView->currentIndex() );
}
void QgsDb2SourceSelect::refresh()
{
populateConnectionList();
}
void QgsDb2SourceSelect::on_mTablesTreeView_clicked( const QModelIndex &index )
{
mBuildQueryButton->setEnabled( index.parent().isValid() );
}
void QgsDb2SourceSelect::on_mTablesTreeView_doubleClicked( const QModelIndex &index )
{
QgsSettings settings;
if ( settings.value( QStringLiteral( "qgis/addDb2DC" ), false ).toBool() )
{
addButtonClicked();
}
else
{
setSql( index );
}
}
void QgsDb2SourceSelect::on_mSearchGroupBox_toggled( bool checked )
{
if ( mSearchTableEdit->text().isEmpty() )
return;
on_mSearchTableEdit_textChanged( checked ? mSearchTableEdit->text() : QLatin1String( "" ) );
}
void QgsDb2SourceSelect::on_mSearchTableEdit_textChanged( const QString &text )
{
if ( mSearchModeComboBox->currentText() == tr( "Wildcard" ) )
{
mProxyModel._setFilterWildcard( text );
}
else if ( mSearchModeComboBox->currentText() == tr( "RegExp" ) )
{
mProxyModel._setFilterRegExp( text );
}
}
void QgsDb2SourceSelect::on_mSearchColumnComboBox_currentIndexChanged( const QString &text )
{
if ( text == tr( "All" ) )
{
mProxyModel.setFilterKeyColumn( -1 );
}
else if ( text == tr( "Schema" ) )
{
mProxyModel.setFilterKeyColumn( QgsDb2TableModel::DbtmSchema );
}
else if ( text == tr( "Table" ) )
{
mProxyModel.setFilterKeyColumn( QgsDb2TableModel::DbtmTable );
}
else if ( text == tr( "Type" ) )
{
mProxyModel.setFilterKeyColumn( QgsDb2TableModel::DbtmType );
}
else if ( text == tr( "Geometry column" ) )
{
mProxyModel.setFilterKeyColumn( QgsDb2TableModel::DbtmGeomCol );
}
else if ( text == tr( "Primary key column" ) )
{
mProxyModel.setFilterKeyColumn( QgsDb2TableModel::DbtmPkCol );
}
else if ( text == tr( "SRID" ) )
{
mProxyModel.setFilterKeyColumn( QgsDb2TableModel::DbtmSrid );
}
else if ( text == tr( "Sql" ) )
{
mProxyModel.setFilterKeyColumn( QgsDb2TableModel::DbtmSql );
}
}
void QgsDb2SourceSelect::on_mSearchModeComboBox_currentIndexChanged( const QString &text )
{
Q_UNUSED( text );
on_mSearchTableEdit_textChanged( mSearchTableEdit->text() );
}
void QgsDb2SourceSelect::setLayerType( const QgsDb2LayerProperty &layerProperty )
{
mTableModel.setGeometryTypesForTable( layerProperty );
}
QgsDb2SourceSelect::~QgsDb2SourceSelect()
{
if ( mColumnTypeThread )
{
mColumnTypeThread->stop();
mColumnTypeThread->wait();
}
QgsSettings settings;
settings.setValue( QStringLiteral( "Windows/Db2SourceSelect/geometry" ), saveGeometry() );
settings.setValue( QStringLiteral( "Windows/Db2SourceSelect/HoldDialogOpen" ), mHoldDialogOpen->isChecked() );
for ( int i = 0; i < mTableModel.columnCount(); i++ )
{
settings.setValue( QStringLiteral( "Windows/Db2SourceSelect/columnWidths/%1" ).arg( i ), mTablesTreeView->columnWidth( i ) );
}
}
void QgsDb2SourceSelect::populateConnectionList()
{
QgsSettings settings;
settings.beginGroup( QStringLiteral( "Db2/connections" ) );
QStringList keys = settings.childGroups();
QStringList::Iterator it = keys.begin();
cmbConnections->clear();
while ( it != keys.end() )
{
cmbConnections->addItem( *it );
++it;
}
setConnectionListPosition();
btnEdit->setDisabled( cmbConnections->count() == 0 );
btnDelete->setDisabled( cmbConnections->count() == 0 );
btnConnect->setDisabled( cmbConnections->count() == 0 );
cmbConnections->setDisabled( cmbConnections->count() == 0 );
}
// Slot for performing action when the Add button is clicked
void QgsDb2SourceSelect::addButtonClicked()
{
QgsDebugMsg( QString( "mConnInfo:%1" ).arg( mConnInfo ) );
mSelectedTables.clear();
Q_FOREACH ( const QModelIndex &idx, mTablesTreeView->selectionModel()->selection().indexes() )
{
if ( idx.column() != QgsDb2TableModel::DbtmTable )
continue;
QString uri = mTableModel.layerURI( mProxyModel.mapToSource( idx ), mConnInfo, mUseEstimatedMetadata );
if ( uri.isNull() )
continue;
mSelectedTables << uri;
}
if ( mSelectedTables.empty() )
{
QMessageBox::information( this, tr( "Select Table" ), tr( "You must select a table in order to add a layer." ) );
}
else
{
emit addDatabaseLayers( mSelectedTables, QStringLiteral( "DB2" ) );
if ( !mHoldDialogOpen->isChecked() && widgetMode() == QgsProviderRegistry::WidgetMode::None )
{
accept();
}
}
}
void QgsDb2SourceSelect::on_btnConnect_clicked()
{
cbxAllowGeometrylessTables->setEnabled( true );
if ( mColumnTypeThread )
{
mColumnTypeThread->stop();
return;
}
QModelIndex rootItemIndex = mTableModel.indexFromItem( mTableModel.invisibleRootItem() );
mTableModel.removeRows( 0, mTableModel.rowCount( rootItemIndex ), rootItemIndex );
// populate the table list
QString errorMsg;
bool success = QgsDb2ConnectionItem::ConnInfoFromSettings( cmbConnections->currentText(), mConnInfo, errorMsg );
if ( !success )
{
QgsDebugMsg( "settings error: " + errorMsg );
QMessageBox::warning( this,
tr( "DB2 Provider" ), errorMsg );
return;
}
QSqlDatabase db = QgsDb2Provider::getDatabase( mConnInfo, errorMsg );
if ( !errorMsg.isEmpty() )
{
// Let user know we couldn't initialize the DB2 provider
QMessageBox::warning( this,
tr( "DB2 Provider" ), errorMsg );
return;
}
QgsDb2GeometryColumns db2GC = QgsDb2GeometryColumns( db );
QString sqlcode = db2GC.open();
if ( !sqlcode.isEmpty() && QStringLiteral( "0" ) != sqlcode )
{
QMessageBox::warning( this, tr( "DB2GSE.ST_GEOMETRY_COLUMNS Not Found" ),
tr( "DB2GSE.ST_GEOMETRY_COLUMNS not found. The DB2 Spatial Extender is not enabled or set up." ) );
return;
}
QApplication::setOverrideCursor( Qt::WaitCursor );
if ( db2GC.isActive() )
{
// Read supported layers from database
QgsDb2LayerProperty layer;
while ( db2GC.populateLayerProperty( layer ) )
{
QgsDebugMsg( "layer type: " + layer.type );
mTableModel.addTableEntry( layer );
if ( mColumnTypeThread )
{
btnConnect->setText( tr( "Stop" ) );
mColumnTypeThread->start();
}
//if we have only one schema item, expand it by default
int numTopLevelItems = mTableModel.invisibleRootItem()->rowCount();
if ( numTopLevelItems < 2 || mTableModel.tableCount() < 20 )
{
//expand all the toplevel items
for ( int i = 0; i < numTopLevelItems; ++i )
{
mTablesTreeView->expand( mProxyModel.mapFromSource(
mTableModel.indexFromItem( mTableModel.invisibleRootItem()->child( i ) ) ) );
}
}
}
}
else
{
QApplication::restoreOverrideCursor();
// Let user know we couldn't retrieve tables from the Db2 provider
QMessageBox::warning( this,
tr( "DB2 Provider" ), db.lastError().text() );
return;
}
if ( !mColumnTypeThread )
{
finishList();
}
}
void QgsDb2SourceSelect::finishList()
{
QApplication::restoreOverrideCursor();
mTablesTreeView->sortByColumn( QgsDb2TableModel::DbtmTable, Qt::AscendingOrder );
mTablesTreeView->sortByColumn( QgsDb2TableModel::DbtmSchema, Qt::AscendingOrder );
}
void QgsDb2SourceSelect::columnThreadFinished()
{
delete mColumnTypeThread;
mColumnTypeThread = 0;
btnConnect->setText( tr( "Connect" ) );
finishList();
}
QStringList QgsDb2SourceSelect::selectedTables()
{
return mSelectedTables;
}
QString QgsDb2SourceSelect::connectionInfo()
{
return mConnInfo;
}
void QgsDb2SourceSelect::setSql( const QModelIndex &index )
{
if ( !index.parent().isValid() )
{
QgsDebugMsg( "schema item found" );
return;
}
QModelIndex idx = mProxyModel.mapToSource( index );
QString tableName = mTableModel.itemFromIndex( idx.sibling( idx.row(), QgsDb2TableModel::DbtmTable ) )->text();
QgsVectorLayer *vlayer = new QgsVectorLayer( mTableModel.layerURI( idx, mConnInfo, mUseEstimatedMetadata ), tableName, QStringLiteral( "DB2" ) );
if ( !vlayer->isValid() )
{
delete vlayer;
return;
}
// create a query builder object
QgsQueryBuilder *gb = new QgsQueryBuilder( vlayer, this );
if ( gb->exec() )
{
mTableModel.setSql( mProxyModel.mapToSource( index ), gb->sql() );
}
delete gb;
delete vlayer;
}
void QgsDb2SourceSelect::addSearchGeometryColumn( const QString &connectionName, const QgsDb2LayerProperty &layerProperty, bool estimateMetadata )
{
// store the column details and do the query in a thread
if ( !mColumnTypeThread )
{
mColumnTypeThread = new QgsDb2GeomColumnTypeThread( connectionName, estimateMetadata );
connect( mColumnTypeThread, &QgsDb2GeomColumnTypeThread::setLayerType,
this, &QgsDb2SourceSelect::setLayerType );
connect( this, &QgsDb2SourceSelect::addGeometryColumn,
mColumnTypeThread, &QgsDb2GeomColumnTypeThread::addGeometryColumn );
connect( mColumnTypeThread, &QThread::finished,
this, &QgsDb2SourceSelect::columnThreadFinished );
}
emit addGeometryColumn( layerProperty );
}
QString QgsDb2SourceSelect::fullDescription( const QString &schema, const QString &table, const QString &column, const QString &type )
{
QString full_desc = QLatin1String( "" );
if ( !schema.isEmpty() )
full_desc = schema + ".";
full_desc += table + " (" + column + ") " + type;
return full_desc;
}
void QgsDb2SourceSelect::setConnectionListPosition()
{
// If possible, set the item currently displayed database
QgsSettings settings;
QString toSelect = settings.value( QStringLiteral( "Db2/connections/selected" ) ).toString();
cmbConnections->setCurrentIndex( cmbConnections->findText( toSelect ) );
if ( cmbConnections->currentIndex() < 0 )
{
if ( toSelect.isNull() )
cmbConnections->setCurrentIndex( 0 );
else
cmbConnections->setCurrentIndex( cmbConnections->count() - 1 );
}
}
void QgsDb2SourceSelect::setSearchExpression( const QString ®exp )
{
Q_UNUSED( regexp );
}
void QgsDb2SourceSelect::treeWidgetSelectionChanged( const QItemSelection &selected, const QItemSelection &deselected )
{
Q_UNUSED( deselected )
emit enableButtons( !selected.isEmpty() );
}
QgsDb2GeomColumnTypeThread::QgsDb2GeomColumnTypeThread( const QString &connectionName, bool useEstimatedMetadata )
: QThread()
, mConnectionName( connectionName )
, mUseEstimatedMetadata( useEstimatedMetadata )
, mStopped( false )
{
qRegisterMetaType<QgsDb2LayerProperty>( "QgsDb2LayerProperty" );
}
void QgsDb2GeomColumnTypeThread::addGeometryColumn( const QgsDb2LayerProperty &layerProperty )
{
layerProperties << layerProperty;
}
void QgsDb2GeomColumnTypeThread::stop()
{
mStopped = true;
}
void QgsDb2GeomColumnTypeThread::run()
{
mStopped = false;
for ( QList<QgsDb2LayerProperty>::iterator it = layerProperties.begin(),
end = layerProperties.end();
it != end; ++it )
{
QgsDb2LayerProperty &layerProperty = *it;
if ( !mStopped )
{
QString table;
table = QStringLiteral( "%1[%2]" )
.arg( layerProperty.schemaName.isEmpty() ? QLatin1String( "" ) : QStringLiteral( "[%1]." ).arg( layerProperty.schemaName ),
layerProperty.tableName );
QString query = QString( "SELECT %3"
" UPPER([%1].STGeometryType()),"
" [%1].STSrid"
" FROM %2"
" WHERE [%1] IS NOT NULL %4"
" GROUP BY [%1].STGeometryType(), [%1].STSrid" )
.arg( layerProperty.geometryColName,
table,
mUseEstimatedMetadata ? "TOP 1" : "",
layerProperty.sql.isEmpty() ? QLatin1String( "" ) : QStringLiteral( " AND %1" ).arg( layerProperty.sql ) );
// issue the sql query
QSqlDatabase db = QSqlDatabase::database( mConnectionName );
if ( !QgsDb2Provider::openDatabase( db ) )
{
QgsDebugMsg( db.lastError().text() );
continue;
}
QSqlQuery q = QSqlQuery( db );
q.setForwardOnly( true );
if ( !q.exec( query ) )
{
QgsDebugMsg( q.lastError().text() );
}
QString type;
QString srid;
if ( q.isActive() )
{
QStringList types;
QStringList srids;
while ( q.next() )
{
QString type = q.value( 0 ).toString().toUpper();
QString srid = q.value( 1 ).toString();
if ( type.isEmpty() )
continue;
types << type;
srids << srid;
}
type = types.join( QStringLiteral( "," ) );
srid = srids.join( QStringLiteral( "," ) );
}
layerProperty.type = type;
layerProperty.srid = srid;
}
else
{
layerProperty.type = QLatin1String( "" );
layerProperty.srid = QLatin1String( "" );
}
// Now tell the layer list dialog box...
emit setLayerType( layerProperty );
}
}
void QgsDb2SourceSelect::showHelp()
{
QgsHelp::openHelp( QStringLiteral( "managing_data_source/opening_data.html#loading-a-database-layer" ) );
}