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

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

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.

Definition at line 46 of file qgsosmdatabase.h.

Member Enumeration Documentation

enum QgsOSMDatabase::ExportType

Enumerator:

Point
Polyline
Polygon

Definition at line 81 of file qgsosmdatabase.h.

Constructor & Destructor Documentation

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

explicit

Definition at line 25 of file qgsosmdatabase.cpp.

QgsOSMDatabase::~QgsOSMDatabase

(

)

Definition at line 38 of file qgsosmdatabase.cpp.

Member Function Documentation

bool QgsOSMDatabase::close

(

)

Definition at line 84 of file qgsosmdatabase.cpp.

int QgsOSMDatabase::countNodes

(

)

const

Definition at line 123 of file qgsosmdatabase.cpp.

int QgsOSMDatabase::countWays

(

)

const

Definition at line 128 of file qgsosmdatabase.cpp.

bool QgsOSMDatabase::createSpatialIndex ( const QString &  tableName )

protected

Definition at line 372 of file qgsosmdatabase.cpp.

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

protected

Definition at line 341 of file qgsosmdatabase.cpp.

void QgsOSMDatabase::deleteStatement ( sqlite3_stmt *&  stmt )

protected

Definition at line 74 of file qgsosmdatabase.cpp.

QString QgsOSMDatabase::errorString ( ) const

inline

Definition at line 59 of file qgsosmdatabase.h.

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

Definition at line 302 of file qgsosmdatabase.cpp.

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

protected

Definition at line 388 of file qgsosmdatabase.cpp.

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

protected

Definition at line 443 of file qgsosmdatabase.cpp.

QString QgsOSMDatabase::filename ( ) const

inline

Definition at line 53 of file qgsosmdatabase.h.

bool QgsOSMDatabase::isOpen

(

)

const

Definition at line 44 of file qgsosmdatabase.cpp.

QgsOSMNodeIterator QgsOSMDatabase::listNodes

(

)

const

Definition at line 134 of file qgsosmdatabase.cpp.

QgsOSMWayIterator QgsOSMDatabase::listWays

(

)

const

Definition at line 139 of file qgsosmdatabase.cpp.

QgsOSMNode QgsOSMDatabase::node

(

QgsOSMId

id

)

const

Definition at line 145 of file qgsosmdatabase.cpp.

bool QgsOSMDatabase::open

(

)

Definition at line 50 of file qgsosmdatabase.cpp.

bool QgsOSMDatabase::prepareStatements ( )

protected

Definition at line 263 of file qgsosmdatabase.cpp.

QString QgsOSMDatabase::quotedIdentifier ( QString  id )

protected

Definition at line 516 of file qgsosmdatabase.cpp.

QString QgsOSMDatabase::quotedValue ( QString  value )

protected

Definition at line 522 of file qgsosmdatabase.cpp.

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

protected

Definition at line 106 of file qgsosmdatabase.cpp.

void QgsOSMDatabase::setFileName ( const QString &  dbFileName )

inline

Definition at line 52 of file qgsosmdatabase.h.

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

Definition at line 166 of file qgsosmdatabase.cpp.

QList< QgsOSMTagCountPair > QgsOSMDatabase::usedTags

(

bool

ways

)

const

Definition at line 186 of file qgsosmdatabase.cpp.

QgsOSMWay QgsOSMDatabase::way

(

QgsOSMId

id

)

const

Definition at line 209 of file qgsosmdatabase.cpp.

QgsPolyline QgsOSMDatabase::wayPoints

(

QgsOSMId

id

)

const

Definition at line 241 of file qgsosmdatabase.cpp.

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

• /tmp/buildd/qgis-2.8.2+12wheezy/src/analysis/openstreetmap/qgsosmdatabase.h
• /tmp/buildd/qgis-2.8.2+12wheezy/src/analysis/openstreetmap/qgsosmdatabase.cpp