Application: gvSIG desktop

/******************************************************************************

 * $Id: ogr_feature.h 7765 2006-10-03 07:05:18Z nacho $

 *

 * Project:  OpenGIS Simple Features Reference Implementation

 * Purpose:  Class for representing a whole feature, and layer schemas.

 * Author:   Frank Warmerdam, warmerda@home.com

 *

 ******************************************************************************

 * Copyright (c) 1999,  Les Technologies SoftMap Inc.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included

 * in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

 * DEALINGS IN THE SOFTWARE.

 ******************************************************************************

 *

 * $Log$

 * Revision 1.3  2006-10-03 07:05:18  nacho

 * *** empty log message ***

 *

 * Revision 1.1  2006/07/18 16:21:00  nacho

 * *** empty log message ***

 *

 * Revision 1.1  2006/06/29 16:23:27  nacho

 * *** empty log message ***

 *

 * Revision 1.2  2006/01/09 12:50:13  nacho

 * *** empty log message ***

 *

 * Revision 1.1  2005/07/27 08:22:55  igbrotru

 * *** empty log message ***

 *

 * Revision 1.1  2005/01/11 15:23:01  igbrotru

 * *** empty log message ***

 *

 * Revision 1.29  2004/02/23 21:47:23  warmerda

 * Added GetUsedFields() and GetSWGExpr() methods on OGRFeatureQuery class

 *

 * Revision 1.28  2003/05/28 19:16:42  warmerda

 * fixed up argument names and stuff for docs

 *

 * Revision 1.27  2003/04/08 20:57:28  warmerda

 * added RemapFields on OGRFeature

 *

 * Revision 1.26  2003/03/04 05:46:31  warmerda

 * added EvaluateAgainstIndices for OGRFeatureQuery

 *

 * Revision 1.25  2003/01/08 22:03:44  warmerda

 * added StealGeometry() method on OGRFeature

 *

 * Revision 1.24  2002/10/09 14:31:06  warmerda

 * dont permit negative widths to be assigned to field definition

 *

 * Revision 1.23  2002/09/26 18:13:17  warmerda

 * moved some defs to ogr_core.h for sharing with ogr_api.h

 *

 * Revision 1.22  2002/08/07 21:37:47  warmerda

 * added indirect OGRFeaturedefn constructor/destructor

 *

 * Revision 1.21  2001/11/01 16:54:16  warmerda

 * added DestroyFeature

 *

 * Revision 1.20  2001/07/19 18:25:07  warmerda

 * expanded tabs

 *

 * Revision 1.19  2001/06/19 15:48:36  warmerda

 * added feature attribute query support

 *

 * Revision 1.18  2001/06/01 14:33:00  warmerda

 * added CreateFeature factory method

 *

 * Revision 1.17  2001/02/06 17:10:28  warmerda

 * export entry points from DLL

 *

 * Revision 1.16  2001/01/19 21:10:47  warmerda

 * replaced tabs

 *

 * Revision 1.15  2000/12/07 03:40:13  danmo

 * Removed stray comma in OGRFieldType enum defn

 *

 * Revision 1.14  2000/10/03 19:19:56  danmo

 * Made m_pszStyleString protected (was private)

 *

 * Revision 1.13  2000/10/03 18:14:29  danmo

 * Made OGRFeature::Get/SetStyleString() virtual

 *

 * Revision 1.12  2000/08/18 21:26:53  svillene

 * Add representation

 *

 * Revision 1.11  1999/11/26 03:05:38  warmerda

 * added unset field support

 *

 * Revision 1.10  1999/11/18 19:02:20  warmerda

 * expanded tabs

 *

 * Revision 1.9  1999/11/04 21:05:49  warmerda

 * Added the Set() method on OGRFieldDefn to set all info in one call,

 * and the SetFrom() method on OGRFeature to copy the contents of one

 * feature to another, even if of a different OGRFeatureDefn.

 *

 * Revision 1.8  1999/10/01 14:47:05  warmerda

 * added full family of get/set field methods with field names

 *

 * Revision 1.7  1999/08/30 14:52:33  warmerda

 * added support for StringList fields

 *

 * Revision 1.6  1999/08/26 17:38:00  warmerda

 * added support for real and integer lists

 *

 * Revision 1.5  1999/07/27 00:47:37  warmerda

 * Added FID to OGRFeature class

 *

 * Revision 1.4  1999/07/07 04:23:07  danmo

 * Fixed typo in  #define _OGR_..._H_INCLUDED  line

 *

 * Revision 1.3  1999/07/05 17:18:39  warmerda

 * added docs

 *

 * Revision 1.2  1999/06/11 19:21:27  warmerda

 * Fleshed out operational definitions

 *

 * Revision 1.1  1999/05/31 17:14:53  warmerda

 * New

 *

 */

#ifndef _OGR_FEATURE_H_INCLUDED

#define _OGR_FEATURE_H_INCLUDED

#include "ogr_geometry.h"

class OGRStyleTable;

/**

 * \file ogr_feature.h

 *

 * Simple feature classes.

 */

/************************************************************************/

/*                             OGRFieldDefn                             */

/************************************************************************/

/**

 * Definition of an attribute of an OGRFeatureDefn.

 */

class CPL_DLL OGRFieldDefn

{

  private:

    char                *pszName;

    OGRFieldType        eType;                  

    OGRJustification    eJustify;               

    int                 nWidth;                 /* zero is variable */

    int                 nPrecision;

    OGRField            uDefault;

    void                Initialize( const char *, OGRFieldType );

  public:

                        OGRFieldDefn( const char *, OGRFieldType );

                        OGRFieldDefn( OGRFieldDefn * );

                        ~OGRFieldDefn();

    void                SetName( const char * );

    const char         *GetNameRef() { return pszName; }

    OGRFieldType        GetType() { return eType; }

    void                SetType( OGRFieldType eTypeIn ) { eType = eTypeIn;}

    static const char  *GetFieldTypeName( OGRFieldType );

    OGRJustification    GetJustify() { return eJustify; }

    void                SetJustify( OGRJustification eJustifyIn )

                                                { eJustify = eJustifyIn; }

    int                 GetWidth() { return nWidth; }

    void                SetWidth( int nWidthIn ) { nWidth = MAX(0,nWidthIn); }

    int                 GetPrecision() { return nPrecision; }

    void                SetPrecision( int nPrecisionIn )

                                                { nPrecision = nPrecisionIn; }

    void                Set( const char *, OGRFieldType, int = 0, int = 0,

                             OGRJustification = OJUndefined );

    void                SetDefault( const OGRField * );

    const OGRField     *GetDefaultRef() { return &uDefault; }

};

/************************************************************************/

/*                            OGRFeatureDefn                            */

/************************************************************************/

/**

 * Definition of a feature class or feature layer.

 *

 * This object contains schema information for a set of OGRFeatures.  In

 * table based systems, an OGRFeatureDefn is essentially a layer.  In more

 * object oriented approaches (such as SF CORBA) this can represent a class

 * of features but doesn't necessarily relate to all of a layer, or just one

 * layer.

 *

 * This object also can contain some other information such as a name, the

 * base geometry type and potentially other metadata.

 *

 * It is reasonable for different translators to derive classes from

 * OGRFeatureDefn with additional translator specific information. 

 */

class CPL_DLL OGRFeatureDefn

{

  private:

    int         nRefCount;

    int         nFieldCount;

    OGRFieldDefn **papoFieldDefn;

    OGRwkbGeometryType eGeomType;

    char        *pszFeatureClassName;

  public:

                OGRFeatureDefn( const char * pszName = NULL );

    virtual    ~OGRFeatureDefn();

    const char  *GetName() { return pszFeatureClassName; }

    int         GetFieldCount() { return nFieldCount; }

    OGRFieldDefn *GetFieldDefn( int i );

    int         GetFieldIndex( const char * );

    void        AddFieldDefn( OGRFieldDefn * );

    OGRwkbGeometryType GetGeomType() { return eGeomType; }

    void        SetGeomType( OGRwkbGeometryType );

    OGRFeatureDefn *Clone();

    int         Reference() { return ++nRefCount; }

    int         Dereference() { return --nRefCount; }

    int         GetReferenceCount() { return nRefCount; }

    static OGRFeatureDefn  *CreateFeatureDefn( const char *pszName = NULL );

    static void         DestroyFeatureDefn( OGRFeatureDefn * );

};

/************************************************************************/

/*                              OGRFeature                              */

/************************************************************************/

/**

 * A simple feature, including geometry and attributes.

 */

class CPL_DLL OGRFeature

{

  private:

    long                nFID;

    OGRFeatureDefn      *poDefn;

    OGRGeometry         *poGeometry;

    OGRField            *pauFields;

  protected: 

    char *              m_pszStyleString;

    OGRStyleTable       *m_poStyleTable;

  public:

                        OGRFeature( OGRFeatureDefn * );

    virtual            ~OGRFeature();                        

    OGRFeatureDefn     *GetDefnRef() { return poDefn; }

    OGRErr              SetGeometryDirectly( OGRGeometry * );

    OGRErr              SetGeometry( OGRGeometry * );

    OGRGeometry        *GetGeometryRef() { return poGeometry; }

    OGRGeometry        *StealGeometry();

    OGRFeature         *Clone();

    virtual OGRBoolean  Equal( OGRFeature * poFeature );

    int                 GetFieldCount() { return poDefn->GetFieldCount(); }

    OGRFieldDefn       *GetFieldDefnRef( int iField )

                                      { return poDefn->GetFieldDefn(iField); }

    int                 GetFieldIndex( const char * pszName)

                                      { return poDefn->GetFieldIndex(pszName);}

    int                 IsFieldSet( int iField )

                        { return

                              pauFields[iField].Set.nMarker1 != OGRUnsetMarker

                           || pauFields[iField].Set.nMarker2 != OGRUnsetMarker;

                              }

    void                UnsetField( int iField );

    OGRField           *GetRawFieldRef( int i ) { return pauFields + i; }

    int                 GetFieldAsInteger( int i );

    double              GetFieldAsDouble( int i );

    const char         *GetFieldAsString( int i );

    const int          *GetFieldAsIntegerList( int i, int *pnCount );

    const double       *GetFieldAsDoubleList( int i, int *pnCount );

    char              **GetFieldAsStringList( int i );

    int                 GetFieldAsInteger( const char *pszFName )

                      { return GetFieldAsInteger( GetFieldIndex(pszFName) ); }

    double              GetFieldAsDouble( const char *pszFName )

                      { return GetFieldAsDouble( GetFieldIndex(pszFName) ); }

    const char         *GetFieldAsString( const char *pszFName )

                      { return GetFieldAsString( GetFieldIndex(pszFName) ); }

    const int          *GetFieldAsIntegerList( const char *pszFName,

                                               int *pnCount )

                      { return GetFieldAsIntegerList( GetFieldIndex(pszFName),

                                                      pnCount ); }

    const double       *GetFieldAsDoubleList( const char *pszFName,

                                              int *pnCount )

                      { return GetFieldAsDoubleList( GetFieldIndex(pszFName),

                                                     pnCount ); }

    char              **GetFieldAsStringList( const char *pszFName )

                      { return GetFieldAsStringList(GetFieldIndex(pszFName)); }

    void                SetField( int i, int nValue );

    void                SetField( int i, double dfValue );

    void                SetField( int i, const char * pszValue );

    void                SetField( int i, int nCount, int * panValues );

    void                SetField( int i, int nCount, double * padfValues );

    void                SetField( int i, char ** papszValues );

    void                SetField( int i, OGRField * puValue );

    void                SetField( const char *pszFName, int nValue )

                           { SetField( GetFieldIndex(pszFName), nValue ); }

    void                SetField( const char *pszFName, double dfValue )

                           { SetField( GetFieldIndex(pszFName), dfValue ); }

    void                SetField( const char *pszFName, const char * pszValue)

                           { SetField( GetFieldIndex(pszFName), pszValue ); }

    void                SetField( const char *pszFName, int nCount,

                                  int * panValues )

                         { SetField(GetFieldIndex(pszFName),nCount,panValues);}

    void                SetField( const char *pszFName, int nCount,

                                  double * padfValues )

                         {SetField(GetFieldIndex(pszFName),nCount,padfValues);}

    void                SetField( const char *pszFName, char ** papszValues )

                           { SetField( GetFieldIndex(pszFName), papszValues); }

    void                SetField( const char *pszFName, OGRField * puValue )

                           { SetField( GetFieldIndex(pszFName), puValue ); }

    long                GetFID() { return nFID; }

    virtual OGRErr      SetFID( long nFID );

    void                DumpReadable( FILE * );

    OGRErr              SetFrom( OGRFeature *, int = TRUE);

    OGRErr              RemapFields( OGRFeatureDefn *poNewDefn, 

                                     int *panRemapSource );

    virtual const char *GetStyleString();

    virtual void        SetStyleString(const char *);

    virtual void        SetStyleTable(OGRStyleTable *poStyleTable);

    static OGRFeature  *CreateFeature( OGRFeatureDefn * );

    static void         DestroyFeature( OGRFeature * );

};

/************************************************************************/

/*                           OGRFeatureQuery                            */

/************************************************************************/

class OGRLayer;

class CPL_DLL OGRFeatureQuery

{

  private:

    OGRFeatureDefn *poTargetDefn;

    void           *pSWQExpr;

    char          **FieldCollector( void *, char ** );

  public:

                OGRFeatureQuery();

                ~OGRFeatureQuery();

    OGRErr      Compile( OGRFeatureDefn *, const char * );

    int         Evaluate( OGRFeature * );

    long       *EvaluateAgainstIndices( OGRLayer *, OGRErr * );

    char      **GetUsedFields();

    void       *GetSWGExpr() { return pSWQExpr; }

};

#endif /* ndef _OGR_FEATURE_H_INCLUDED */