1 : /******************************************************************************
2 : * $Id: ogr_mem.h 24174 2012-03-29 21:10:56Z rouault $
3 : *
4 : * Project: OpenGIS Simple Features Reference Implementation
5 : * Purpose: Private definitions within the OGR Memory driver.
6 : * Author: Frank Warmerdam, warmerdam@pobox.com
7 : *
8 : ******************************************************************************
9 : * Copyright (c) 2003, Frank Warmerdam <warmerdam@pobox.com>
10 : *
11 : * Permission is hereby granted, free of charge, to any person obtaining a
12 : * copy of this software and associated documentation files (the "Software"),
13 : * to deal in the Software without restriction, including without limitation
14 : * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 : * and/or sell copies of the Software, and to permit persons to whom the
16 : * Software is furnished to do so, subject to the following conditions:
17 : *
18 : * The above copyright notice and this permission notice shall be included
19 : * in all copies or substantial portions of the Software.
20 : *
21 : * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22 : * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 : * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
24 : * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 : * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
26 : * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
27 : * DEALINGS IN THE SOFTWARE.
28 : ****************************************************************************/
29 :
30 : #ifndef _OGRMEM_H_INCLUDED
31 : #define _OGRMEM_H_INCLUDED
32 :
33 : #include "ogrsf_frmts.h"
34 :
35 : /************************************************************************/
36 : /* OGRMemLayer */
37 : /************************************************************************/
38 :
39 : class OGRMemLayer : public OGRLayer
40 : {
41 : OGRSpatialReference *poSRS;
42 : OGRFeatureDefn *poFeatureDefn;
43 :
44 : int nFeatureCount;
45 : int nMaxFeatureCount;
46 : OGRFeature **papoFeatures;
47 :
48 : int iNextReadFID;
49 : int iNextCreateFID;
50 :
51 : OGRwkbGeometryType eWkbType;
52 :
53 : int bUpdatable;
54 : int bAdvertizeUTF8;
55 :
56 : int bHasHoles;
57 :
58 : public:
59 : OGRMemLayer( const char * pszName,
60 : OGRSpatialReference *poSRS,
61 : OGRwkbGeometryType eGeomType );
62 : ~OGRMemLayer();
63 :
64 : void ResetReading();
65 : OGRFeature * GetNextFeature();
66 : virtual OGRErr SetNextByIndex( long nIndex );
67 :
68 : OGRFeature *GetFeature( long nFeatureId );
69 : OGRErr SetFeature( OGRFeature *poFeature );
70 : OGRErr CreateFeature( OGRFeature *poFeature );
71 : virtual OGRErr DeleteFeature( long nFID );
72 :
73 0 : OGRFeatureDefn * GetLayerDefn() { return poFeatureDefn; }
74 :
75 : int GetFeatureCount( int );
76 :
77 : virtual OGRErr CreateField( OGRFieldDefn *poField,
78 : int bApproxOK = TRUE );
79 : virtual OGRErr DeleteField( int iField );
80 : virtual OGRErr ReorderFields( int* panMap );
81 : virtual OGRErr AlterFieldDefn( int iField, OGRFieldDefn* poNewFieldDefn, int nFlags );
82 :
83 : virtual OGRSpatialReference *GetSpatialRef();
84 :
85 : int TestCapability( const char * );
86 :
87 : void SetUpdatable(int bUpdatableIn) { bUpdatable = bUpdatableIn; }
88 : void SetAdvertizeUTF8(int bAdvertizeUTF8In) { bAdvertizeUTF8 = bAdvertizeUTF8In; }
89 :
90 : int GetNextReadFID() { return iNextReadFID; }
91 : };
92 :
93 : /************************************************************************/
94 : /* OGRMemDataSource */
95 : /************************************************************************/
96 :
97 : class OGRMemDataSource : public OGRDataSource
98 : {
99 : OGRMemLayer **papoLayers;
100 : int nLayers;
101 :
102 : char *pszName;
103 :
104 : public:
105 : OGRMemDataSource( const char *, char ** );
106 : ~OGRMemDataSource();
107 :
108 60 : const char *GetName() { return pszName; }
109 350 : int GetLayerCount() { return nLayers; }
110 : OGRLayer *GetLayer( int );
111 :
112 : virtual OGRLayer *CreateLayer( const char *,
113 : OGRSpatialReference * = NULL,
114 : OGRwkbGeometryType = wkbUnknown,
115 : char ** = NULL );
116 : OGRErr DeleteLayer( int iLayer );
117 :
118 : int TestCapability( const char * );
119 : };
120 :
121 : /************************************************************************/
122 : /* OGRMemDriver */
123 : /************************************************************************/
124 :
125 : class OGRMemDriver : public OGRSFDriver
126 389 : {
127 : public:
128 : ~OGRMemDriver();
129 :
130 : const char *GetName();
131 : OGRDataSource *Open( const char *, int );
132 :
133 : virtual OGRDataSource *CreateDataSource( const char *pszName,
134 : char ** = NULL );
135 :
136 : int TestCapability( const char * );
137 : };
138 :
139 :
140 : #endif /* ndef _OGRMEM_H_INCLUDED */
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