qgsogcutils.h

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#ifndef QGSOGCUTILS_H
#define QGSOGCUTILS_H

class QColor;
class QDomNode;
class QDomElement;
class QDomDocument;
class QString;

#include <list>
#include <QVector>

class QgsExpression;
class QgsGeometry;
class QgsPoint;
class QgsRectangle;

#include "qgsgeometry.h"
#include "qgsexpression.h"

class CORE_EXPORT QgsOgcUtils
{
  public:

    static QgsGeometry* geometryFromGML( const QString& xmlString );

    static QgsGeometry* geometryFromGML( const QDomNode& geometryNode );

    static QgsRectangle rectangleFromGMLBox( const QDomNode& boxNode );

    static QgsRectangle rectangleFromGMLEnvelope( const QDomNode& envelopeNode );

    static QDomElement geometryToGML( QgsGeometry* geometry, QDomDocument& doc, QString format, const int &precision = 17 );

    static QDomElement geometryToGML( QgsGeometry* geometry, QDomDocument& doc, const int &precision = 17 );

    static QDomElement rectangleToGMLBox( QgsRectangle* box, QDomDocument& doc, const int &precision = 17 );

    static QDomElement rectangleToGMLEnvelope( QgsRectangle* env, QDomDocument& doc, const int &precision = 17 );


    static QColor colorFromOgcFill( const QDomElement& fillElement );

    static QgsExpression* expressionFromOgcFilter( const QDomElement& element );

    static QDomElement expressionToOgcFilter( const QgsExpression& exp, QDomDocument& doc, QString* errorMessage = 0 );

  private:
    static QgsGeometry* geometryFromGMLPoint( const QDomElement& geometryElement );
    static QgsGeometry* geometryFromGMLLineString( const QDomElement& geometryElement );
    static QgsGeometry* geometryFromGMLPolygon( const QDomElement& geometryElement );
    static QgsGeometry* geometryFromGMLMultiPoint( const QDomElement& geometryElement );
    static QgsGeometry* geometryFromGMLMultiLineString( const QDomElement& geometryElement );
    static QgsGeometry* geometryFromGMLMultiPolygon( const QDomElement& geometryElement );
    static bool readGMLCoordinates( QgsPolyline &coords, const QDomElement &elem );
    static bool readGMLPositions( QgsPolyline &coords, const QDomElement &elem );


    static QDomElement createGMLCoordinates( const QgsPolyline &points, QDomDocument& doc );

    static QDomElement createGMLPositions( const QgsPolyline &points, QDomDocument& doc );

    static QgsExpression::Node* nodeFromOgcFilter( QDomElement &element, QString &errorMessage );
    static QgsExpression::NodeBinaryOperator* nodeBinaryOperatorFromOgcFilter( QDomElement &element, QString &errorMessage );
    static QgsExpression::NodeFunction* nodeSpatialOperatorFromOgcFilter( QDomElement& element, QString& errorMessage );
    static QgsExpression::NodeUnaryOperator* nodeNotFromOgcFilter( QDomElement &element, QString &errorMessage );
    static QgsExpression::NodeFunction* nodeFunctionFromOgcFilter( QDomElement &element, QString &errorMessage );
    static QgsExpression::Node* nodeLiteralFromOgcFilter( QDomElement &element, QString &errorMessage );
    static QgsExpression::NodeColumnRef* nodeColumnRefFromOgcFilter( QDomElement &element, QString &errorMessage );
    static QgsExpression::Node* nodeIsBetweenFromOgcFilter( QDomElement& element, QString& errorMessage );
    static QgsExpression::NodeBinaryOperator* nodePropertyIsNullFromOgcFilter( QDomElement& element, QString& errorMessage );

    static QDomElement expressionNodeToOgcFilter( const QgsExpression::Node* node, QDomDocument& doc, QString& errorMessage );
    static QDomElement expressionUnaryOperatorToOgcFilter( const QgsExpression::NodeUnaryOperator* node, QDomDocument& doc, QString& errorMessage );
    static QDomElement expressionBinaryOperatorToOgcFilter( const QgsExpression::NodeBinaryOperator* node, QDomDocument& doc, QString& errorMessage );
    static QDomElement expressionLiteralToOgcFilter( const QgsExpression::NodeLiteral* node, QDomDocument& doc, QString& errorMessage );
    static QDomElement expressionColumnRefToOgcFilter( const QgsExpression::NodeColumnRef* node, QDomDocument& doc, QString& errorMessage );
    static QDomElement expressionInOperatorToOgcFilter( const QgsExpression::NodeInOperator* node, QDomDocument& doc, QString& errorMessage );
    static QDomElement expressionFunctionToOgcFilter( const QgsExpression::NodeFunction* node, QDomDocument& doc, QString& errorMessage );

};

#endif // QGSOGCUTILS_H