1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
/* xb_ex_v3_create_dbf.cpp
XBase64 Software Library
Copyright (c) 1997,2003,2014,2022,2023 Gary A Kunkel
The xb64 software library is covered under the terms of the GPL Version 3, 2007 license.
Email Contact:
XDB-devel@lists.sourceforge.net
XDB-users@lists.sourceforge.net
This example demonstrates the creation of a Version III file and and indices
*/
#include <xbase.h>
using namespace xb;
int main()
{
#ifdef XB_DBF3_SUPPORT
xbSchema MyRecord[] =
{
{ "FIRSTNAME", XB_CHAR_FLD, 15, 0 },
{ "LASTNAME", XB_CHAR_FLD, 20, 0 },
{ "BIRTHDATE", XB_DATE_FLD, 8, 0 },
{ "AMOUNT", XB_NUMERIC_FLD, 9, 2 },
{ "RETIRED?", XB_LOGICAL_FLD, 1, 0 },
{ "ZIPCODE", XB_NUMERIC_FLD, 5, 0 },
#ifdef XB_MEMO_SUPPORT
{ "MEMO1", XB_MEMO_FLD, 10, 0 },
#endif
{ "",0,0,0 }
};
/* define the classes */
xbXBase x; /* initialize xbase */
x.SetDataDirectory( PROJECT_DATA_DIR ); /* where all the tables live */
xbDbf *MyDbfFile; /* Pointer to dbf class */
MyDbfFile = new xbDbf3(&x); /* Create Version 3 instance */
// Create Dbase3 NDX style indices if support compiled in
#ifdef XB_NDX_SUPPORT
xbIxNdx MyIndex1( MyDbfFile ); /* class for index 1 */
xbIxNdx MyIndex2( MyDbfFile ); /* class for index 2 */
xbIxNdx MyIndex3( MyDbfFile ); /* class for index 3 */
#endif
// fixme
// Create Clipper NTX style indices if support compiled in - bring this back to life in a future release
#ifdef XB_INDEX_NTX
xbNtx MyIndex4( &MyDbfFile ); /* class for index 4 */
xbNtx MyIndex5( &MyDbfFile ); /* class for index 5 */
#endif
xbInt16 rc;
if(( rc = MyDbfFile->CreateTable( "MyV3Table1", "MyV3ExampleTableAlias", MyRecord, XB_OVERLAY, XB_MULTI_USER )) != XB_NO_ERROR )
x.DisplayError( rc );
else
{
#ifdef XB_NDX_SUPPORT
xbIx *pIx;
void *pTag;
/*
Create a few index tags
CreateTag( const xbString &sIxType, const xbString &sName, const xbString &sKey, const xbString &sFilter,
xbInt16 iDescending, xbInt16 iUnique, xbInt16 iOverLay, xbIx **xbIxOut, void **vpTagOut );
*/
/* define a simple index */
if(( rc = MyDbfFile->CreateTag ( "NDX", "MYINDEX1.NDX", "LASTNAME", "", 0, 1, XB_OVERLAY, &pIx, &pTag )) != XB_NO_ERROR )
x.DisplayError( rc );
/* define a multi-field index "LASTNAME FIRSTNAME" */
if(( rc = MyDbfFile->CreateTag( "NDX", "MYINDEX2.NDX", "LASTNAME+FIRSTNAME", "", 0, 1, XB_OVERLAY, &pIx, &pTag )) != XB_NO_ERROR )
x.DisplayError( rc );
/* define a numeric index "ZIPCODE" */
if(( rc = MyDbfFile->CreateTag( "NDX", "MYINDEX3.NDX", "ZIPCODE", "", 0, 0, XB_OVERLAY, &pIx, &pTag )) != XB_NO_ERROR )
x.DisplayError( rc );
std::cout << "Tag Count in MYINDEX3.NDX = " << pIx->GetTagCount() << "\n";
xbString sTagName;
sTagName = pIx->GetTagName( &pTag );
std::cout << "Tag Name in MYINDEX3.NDX = " << sTagName.Str() << "\n";
#endif
}
MyDbfFile->Close(); /* Close database and associated indexes */
delete MyDbfFile;
#endif // XB_DBF3_SUPPORT
return 0;
}
|
