QGIS API Documentation  3.23.0-Master (dd0cd13a00)
qgsdatabaseschemaitem.cpp
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1 /***************************************************************************
2  qgsdatabaseschemaitem.cpp
3  -------------------
4  begin : 2011-04-01
5  copyright : (C) 2011 Radim Blazek
6  email : radim dot blazek at gmail dot com
7  ***************************************************************************/
8 
9 /***************************************************************************
10  * *
11  * This program is free software; you can redistribute it and/or modify *
12  * it under the terms of the GNU General Public License as published by *
13  * the Free Software Foundation; either version 2 of the License, or *
14  * (at your option) any later version. *
15  * *
16  ***************************************************************************/
17 
18 #include "qgsdatabaseschemaitem.h"
19 #include "qgsapplication.h"
21 #include "qgsprovidermetadata.h"
22 #include "qgsproviderregistry.h"
24 
25 QgsDatabaseSchemaItem::QgsDatabaseSchemaItem( QgsDataItem *parent, const QString &name, const QString &path, const QString &providerKey )
26  : QgsDataCollectionItem( parent, name, path, providerKey )
27 {
28 
29 }
30 
32 {
33 
34 }
35 
37 {
38  return QgsApplication::getThemeIcon( QStringLiteral( "/mIconDbSchema.svg" ) );
39 }
40 
42 {
43  const QString dataProviderKey { QgsApplication::dataItemProviderRegistry()->dataProviderKey( providerKey() ) };
45  if ( ! md )
46  {
47  return nullptr;
48  }
49  const QString connectionName { parent()->name() };
50  try
51  {
52  return static_cast<QgsAbstractDatabaseProviderConnection *>( md->createConnection( connectionName ) );
53  }
55  {
56  // This is expected and it is not an error in case the provider does not implement
57  // the connections API
58  }
59  return nullptr;
60 }
The QgsAbstractDatabaseProviderConnection class provides common functionality for DB based connection...
static QgsDataItemProviderRegistry * dataItemProviderRegistry()
Returns the application's data item provider registry, which keeps a list of data item providers that...
static QIcon getThemeIcon(const QString &name, const QColor &fillColor=QColor(), const QColor &strokeColor=QColor())
Helper to get a theme icon.
A Collection: logical collection of layers or subcollections, e.g.
QString dataProviderKey(const QString &dataItemProviderName)
Returns the (possibly blank) data provider key for a given data item provider name.
Base class for all items in the model.
Definition: qgsdataitem.h:46
QgsDataItem * parent() const
Gets item parent.
Definition: qgsdataitem.h:330
QString name() const
Returns the name of the item (the displayed text for the item).
Definition: qgsdataitem.h:345
QString providerKey() const
Returns the provider key that created this item (e.g.
QgsDatabaseSchemaItem(QgsDataItem *parent, const QString &name, const QString &path=QString(), const QString &providerKey=QString())
Constructor for QgsDatabaseSchemaItem, with the specified parent item.
QgsAbstractDatabaseProviderConnection * databaseConnection() const override
For data items that represent a DB connection or one of its children, this method returns a connectio...
static QIcon iconDataCollection()
Returns the standard browser data collection icon.
Custom exception class for provider connection related exceptions.
Definition: qgsexception.h:101
Holds data provider key, description, and associated shared library file or function pointer informat...
static QgsProviderRegistry * instance(const QString &pluginPath=QString())
Means of accessing canonical single instance.
QgsProviderMetadata * providerMetadata(const QString &providerKey) const
Returns metadata of the provider or nullptr if not found.