QgsOSMDatabase Class Reference

Class that encapsulates access to OpenStreetMap data stored in a database previously imported from XML file. More...

#include <qgsosmdatabase.h>

Public Types
enum	ExportType { Point, Polyline, Polygon }

Public Member Functions
	QgsOSMDatabase (const QString &dbFileName=QString())
	~QgsOSMDatabase ()
void	setFileName (const QString &dbFileName)
QString	filename () const
bool	isOpen () const
bool	open ()
bool	close ()
QString	errorString () const
int	countNodes () const
int	countWays () const
QgsOSMNodeIterator	listNodes () const
QgsOSMWayIterator	listWays () const
QgsOSMNode	node (QgsOSMId id) const
QgsOSMWay	way (QgsOSMId id) const
QgsOSMTags	tags (bool way, QgsOSMId id) const
QList< QgsOSMTagCountPair >	usedTags (bool ways) const
QgsPolyline	wayPoints (QgsOSMId id) const
bool	exportSpatiaLite (ExportType type, const QString &tableName, const QStringList &tagKeys=QStringList())

Protected Member Functions
bool	prepareStatements ()
int	runCountStatement (const char *sql) const
void	deleteStatement (sqlite3_stmt *&stmt)
void	exportSpatiaLiteNodes (const QString &tableName, const QStringList &tagKeys)
void	exportSpatiaLiteWays (bool closed, const QString &tableName, const QStringList &tagKeys)
bool	createSpatialTable (const QString &tableName, const QString &geometryType, const QStringList &tagKeys)
bool	createSpatialIndex (const QString &tableName)
QString	quotedIdentifier (QString id)
QString	quotedValue (QString value)

Detailed Description

Class that encapsulates access to OpenStreetMap data stored in a database previously imported from XML file.

Internal database structure consists of the following tables:

• nodes
• nodes_tags
• ways
• ways_tags
• ways_nodes

The topology representation can be translated to simple features representation using exportSpatiaLite() method into SpatiaLite layers (tables). These can be easily used in QGIS like any other layers.

Member Enumeration Documentation

enum QgsOSMDatabase::ExportType

Enumerator:

Point
Polyline
Polygon

Constructor & Destructor Documentation

QgsOSMDatabase::QgsOSMDatabase ( const QString &  dbFileName = QString() )

explicit

QgsOSMDatabase::~QgsOSMDatabase

(

)

Member Function Documentation

bool QgsOSMDatabase::close

(

)

int QgsOSMDatabase::countNodes

(

)

const

int QgsOSMDatabase::countWays

(

)

const

bool QgsOSMDatabase::createSpatialIndex ( const QString &  tableName )

protected

bool QgsOSMDatabase::createSpatialTable ( const QString &  tableName, const QString &  geometryType, const QStringList &  tagKeys  )

protected

void QgsOSMDatabase::deleteStatement ( sqlite3_stmt *&  stmt )

protected

QString QgsOSMDatabase::errorString ( ) const

inline

bool QgsOSMDatabase::exportSpatiaLite	(	ExportType	type,
		const QString &	tableName,
		const QStringList &	tagKeys = QStringList()
	)

void QgsOSMDatabase::exportSpatiaLiteNodes ( const QString &  tableName, const QStringList &  tagKeys  )

protected

void QgsOSMDatabase::exportSpatiaLiteWays ( bool  closed, const QString &  tableName, const QStringList &  tagKeys  )

protected

QString QgsOSMDatabase::filename ( ) const

inline

bool QgsOSMDatabase::isOpen

(

)

const

QgsOSMNodeIterator QgsOSMDatabase::listNodes

(

)

const

QgsOSMWayIterator QgsOSMDatabase::listWays

(

)

const

QgsOSMNode QgsOSMDatabase::node

(

QgsOSMId

id

)

const

bool QgsOSMDatabase::open

(

)

bool QgsOSMDatabase::prepareStatements ( )

protected

QString QgsOSMDatabase::quotedIdentifier ( QString  id )

protected

QString QgsOSMDatabase::quotedValue ( QString  value )

protected

int QgsOSMDatabase::runCountStatement ( const char *  sql ) const

protected

void QgsOSMDatabase::setFileName ( const QString &  dbFileName )

inline

QgsOSMTags QgsOSMDatabase::tags	(	bool	way,
		QgsOSMId	id
	)		const

QList< QgsOSMTagCountPair > QgsOSMDatabase::usedTags

(

bool

ways

)

const

QgsOSMWay QgsOSMDatabase::way

(

QgsOSMId

id

)

const

QgsPolyline QgsOSMDatabase::wayPoints

(

QgsOSMId

id

)

const

---

The documentation for this class was generated from the following files:

• /tmp/buildd/qgis-2.6.0+wheezy1/src/analysis/openstreetmap/qgsosmdatabase.h
• /tmp/buildd/qgis-2.6.0+wheezy1/src/analysis/openstreetmap/qgsosmdatabase.cpp