QgsGmlSchema Class Reference

#include <qgsgmlschema.h>

Collaboration diagram for QgsGmlSchema:

Public Member Functions
	QgsGmlSchema ()
	~QgsGmlSchema ()
bool	parseXSD (const QByteArray &xml)
	Get fields info from XSD.
bool	guessSchema (const QByteArray &data)
	Guess GML schema from data if XSD does not exist.
QStringList	typeNames () const
	Get list of dot separated paths to feature classes parsed from GML or XSD.
QList< QgsField >	fields (const QString &typeName)
	Get fields for type/class name parsed from GML or XSD.
QStringList	geometryAttributes (const QString &typeName)
	Get list of geometry attributes for type/class name.

Private Types
enum	ParseMode {   none, boundingBox, featureMember, feature,   attribute, geometry }

Private Member Functions
void	startElement (const XML_Char *el, const XML_Char **attr)
	XML handler methods.
void	endElement (const XML_Char *el)
void	characters (const XML_Char *chars, int len)
QString	readAttribute (const QString &attributeName, const XML_Char **attr) const
	Reads attribute as string.
QWidget *	findMainWindow () const
	Returns pointer to main window or 0 if it does not exist.
QList< QDomElement >	domElements (const QDomElement &element, const QString &path)
	Get dom elements by path.
QDomElement	domElement (const QDomElement &element, const QString &path)
	Get dom element by path.
QList< QDomElement >	domElements (QList< QDomElement > &elements, const QString &attr, const QString &attrVal)
	Filter list of elements by attribute value.
QDomElement	domElement (const QDomElement &element, const QString &path, const QString &attr, const QString &attrVal)
	Get dom element by path and attribute value.
QString	stripNS (const QString &name)
	Strip namespace from element name.
QString	xsdComplexTypeGmlBaseType (const QDomElement &element, const QString &name)
	Find GML base type for complex type of given name.
bool	xsdFeatureClass (const QDomElement &element, const QString &typeName, QgsGmlFeatureClass &featureClass)
	Get feature class information from complex type recursively.
ParseMode	modeStackTop ()
	Get safely (if empty) top from mode stack.
ParseMode	modeStackPop ()
	Safely (if empty) pop from mode stack.

Static Private Member Functions
static void	start (void *data, const XML_Char *el, const XML_Char **attr)
static void	end (void *data, const XML_Char *el)
static void	chars (void *data, const XML_Char *chars, int len)

Private Attributes
QStack< ParseMode >	mParseModeStack
	Keep track about the most important nested elements.
QString	mStringCash
	This contains the character data if an important element has been encountered.
QgsFeature *	mCurrentFeature
QString	mCurrentFeatureId
int	mFeatureCount
QString	mAttributeName
QString	mCoordinateSeparator
	Coordinate separator for coordinate strings.
QString	mTupleSeparator
	Tuple separator for coordinate strings.
int	mLevel
	Depth level, root element is 0.
int	mSkipLevel
	Skip all levels under this.
QStringList	mParsePathStack
	Path to current level.
QString	mCurrentFeatureName
QStringList	mGeometryTypes
QMap< QString, QgsGmlFeatureClass >	mFeatureClassMap

Detailed Description

Definition at line 74 of file qgsgmlschema.h.

Member Enumeration Documentation

enum QgsGmlSchema::ParseMode

private

Enumerator:

none
boundingBox
featureMember
feature
attribute
geometry

Definition at line 102 of file qgsgmlschema.h.

Constructor & Destructor Documentation

QgsGmlSchema::QgsGmlSchema

(

)

Definition at line 59 of file qgsgmlschema.cpp.

References mGeometryTypes.

QgsGmlSchema::~QgsGmlSchema

(

)

Definition at line 67 of file qgsgmlschema.cpp.

Member Function Documentation

void QgsGmlSchema::characters ( const XML_Char *  chars, int  len  )

private

Definition at line 500 of file qgsgmlschema.cpp.

References attribute, mLevel, modeStackTop(), mSkipLevel, and mStringCash.

static void QgsGmlSchema::chars ( void *  data, const XML_Char *  chars, int  len  )

inlinestaticprivate

Definition at line 124 of file qgsgmlschema.h.

Referenced by guessSchema().

QDomElement QgsGmlSchema::domElement ( const QDomElement &  element, const QString &  path  )

private

Get dom element by path.

Definition at line 306 of file qgsgmlschema.cpp.

References domElements().

Referenced by xsdComplexTypeGmlBaseType(), and xsdFeatureClass().

QDomElement QgsGmlSchema::domElement ( const QDomElement &  element, const QString &  path, const QString &  attr, const QString &  attrVal  )

private

Get dom element by path and attribute value.

Definition at line 324 of file qgsgmlschema.cpp.

References domElements().

QList< QDomElement > QgsGmlSchema::domElements ( const QDomElement &  element, const QString &  path  )

private

Get dom elements by path.

Definition at line 272 of file qgsgmlschema.cpp.

References stripNS().

Referenced by domElement(), parseXSD(), and xsdFeatureClass().

QList< QDomElement > QgsGmlSchema::domElements ( QList< QDomElement > &  elements, const QString &  attr, const QString &  attrVal  )

private

Filter list of elements by attribute value.

Definition at line 311 of file qgsgmlschema.cpp.

static void QgsGmlSchema::end ( void *  data, const XML_Char *  el  )

inlinestaticprivate

Definition at line 120 of file qgsgmlschema.h.

Referenced by guessSchema().

void QgsGmlSchema::endElement ( const XML_Char *  el )

private

Definition at line 419 of file qgsgmlschema.cpp.

References attribute, featureMember, fields(), geometryAttributes(), GML_NAMESPACE, mAttributeName, MathUtils::max(), mCurrentFeatureName, mFeatureClassMap, mLevel, modeStackPop(), modeStackTop(), mParseModeStack, mParsePathStack, mSkipLevel, mStringCash, NS_SEPARATOR, QgsDebugMsgLevel, QgsField::setType(), and QgsField::type().

QList< QgsField > QgsGmlSchema::fields

(

const QString &

typeName

)

Get fields for type/class name parsed from GML or XSD.

Definition at line 521 of file qgsgmlschema.cpp.

References mFeatureClassMap.

Referenced by endElement().

QWidget* QgsGmlSchema::findMainWindow ( ) const

private

Returns pointer to main window or 0 if it does not exist.

QStringList QgsGmlSchema::geometryAttributes

(

const QString &

typeName

)

Get list of geometry attributes for type/class name.

Definition at line 527 of file qgsgmlschema.cpp.

References mFeatureClassMap.

Referenced by endElement(), and startElement().

bool QgsGmlSchema::guessSchema

(

const QByteArray &

data

)

Guess GML schema from data if XSD does not exist.

Currently only recognizes UMN Mapserver GetFeatureInfo GML response.

Parameters

data

GML data

Returns

true in case of success

Definition at line 330 of file qgsgmlschema.cpp.

References chars(), end(), MathUtils::max(), mLevel, mSkipLevel, NS_SEPARATOR, QgsDebugMsg, and start().

ParseMode QgsGmlSchema::modeStackPop ( )

inlineprivate

Safely (if empty) pop from mode stack.

Definition at line 168 of file qgsgmlschema.h.

Referenced by endElement().

ParseMode QgsGmlSchema::modeStackTop ( )

inlineprivate

Get safely (if empty) top from mode stack.

Definition at line 165 of file qgsgmlschema.h.

Referenced by characters(), endElement(), and startElement().

bool QgsGmlSchema::parseXSD

(

const QByteArray &

xml

)

Get fields info from XSD.

Definition at line 86 of file qgsgmlschema.cpp.

References domElements(), mFeatureClassMap, stripNS(), xsdComplexTypeGmlBaseType(), and xsdFeatureClass().

QString QgsGmlSchema::readAttribute ( const QString &  attributeName, const XML_Char **  attr  ) const

private

Reads attribute as string.

Returns

attribute value or an empty string if no such attribute

Definition at line 72 of file qgsgmlschema.cpp.

static void QgsGmlSchema::start ( void *  data, const XML_Char *  el, const XML_Char **  attr  )

inlinestaticprivate

Definition at line 116 of file qgsgmlschema.h.

Referenced by guessSchema().

void QgsGmlSchema::startElement ( const XML_Char *  el, const XML_Char **  attr  )

private

XML handler methods.

Definition at line 344 of file qgsgmlschema.cpp.

References attribute, feature, featureMember, geometryAttributes(), GML_NAMESPACE, mAttributeName, mCurrentFeatureName, mFeatureClassMap, mGeometryTypes, mLevel, modeStackTop(), mParseModeStack, mParsePathStack, mSkipLevel, mStringCash, NS_SEPARATOR, and QgsDebugMsgLevel.

QString QgsGmlSchema::stripNS ( const QString &  name )

private

Strip namespace from element name.

Definition at line 267 of file qgsgmlschema.cpp.

Referenced by domElements(), parseXSD(), xsdComplexTypeGmlBaseType(), and xsdFeatureClass().

QStringList QgsGmlSchema::typeNames

(

)

const

Get list of dot separated paths to feature classes parsed from GML or XSD.

Definition at line 516 of file qgsgmlschema.cpp.

References mFeatureClassMap.

QString QgsGmlSchema::xsdComplexTypeGmlBaseType ( const QDomElement &  element, const QString &  name  )

private

Find GML base type for complex type of given name.

Parameters

element	input element
name	complex type name

Returns

name of GML base type without NS, e.g. AbstractFeatureType or empty string if not passed on GML type

Definition at line 244 of file qgsgmlschema.cpp.

References domElement(), and stripNS().

Referenced by parseXSD().

bool QgsGmlSchema::xsdFeatureClass ( const QDomElement &  element, const QString &  typeName, QgsGmlFeatureClass &  featureClass  )

private

Get feature class information from complex type recursively.

Definition at line 129 of file qgsgmlschema.cpp.

References domElement(), domElements(), QgsGmlFeatureClass::fields(), QgsGmlFeatureClass::geometryAttributes(), mGeometryTypes, QgsDebugMsg, and stripNS().

Referenced by parseXSD().

Member Data Documentation

QString QgsGmlSchema::mAttributeName

private

Definition at line 178 of file qgsgmlschema.h.

Referenced by endElement(), and startElement().

QString QgsGmlSchema::mCoordinateSeparator

private

Coordinate separator for coordinate strings.

Usually ","

Definition at line 180 of file qgsgmlschema.h.

QgsFeature* QgsGmlSchema::mCurrentFeature

private

Definition at line 175 of file qgsgmlschema.h.

QString QgsGmlSchema::mCurrentFeatureId

private

Definition at line 176 of file qgsgmlschema.h.

QString QgsGmlSchema::mCurrentFeatureName

private

Definition at line 195 of file qgsgmlschema.h.

Referenced by endElement(), and startElement().

QMap<QString, QgsGmlFeatureClass> QgsGmlSchema::mFeatureClassMap

private

Definition at line 201 of file qgsgmlschema.h.

Referenced by endElement(), fields(), geometryAttributes(), parseXSD(), startElement(), and typeNames().

int QgsGmlSchema::mFeatureCount

private

Definition at line 177 of file qgsgmlschema.h.

QStringList QgsGmlSchema::mGeometryTypes

private

Definition at line 198 of file qgsgmlschema.h.

Referenced by QgsGmlSchema(), startElement(), and xsdFeatureClass().

int QgsGmlSchema::mLevel

private

Depth level, root element is 0.

Definition at line 187 of file qgsgmlschema.h.

Referenced by characters(), endElement(), guessSchema(), and startElement().

QStack<ParseMode> QgsGmlSchema::mParseModeStack

private

Keep track about the most important nested elements.

Definition at line 172 of file qgsgmlschema.h.

Referenced by endElement(), and startElement().

QStringList QgsGmlSchema::mParsePathStack

private

Path to current level.

Definition at line 193 of file qgsgmlschema.h.

Referenced by endElement(), and startElement().

int QgsGmlSchema::mSkipLevel

private

Skip all levels under this.

Definition at line 190 of file qgsgmlschema.h.

Referenced by characters(), endElement(), guessSchema(), and startElement().

QString QgsGmlSchema::mStringCash

private

This contains the character data if an important element has been encountered.

Definition at line 174 of file qgsgmlschema.h.

Referenced by characters(), endElement(), and startElement().

QString QgsGmlSchema::mTupleSeparator

private

Tuple separator for coordinate strings.

Usually " "

Definition at line 182 of file qgsgmlschema.h.

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

• /tmp/buildd/qgis-2.0.1/src/core/qgsgmlschema.h
• /tmp/buildd/qgis-2.0.1/src/core/qgsgmlschema.cpp