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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/* xbsql.h
XBase64 Software Library
Copyright (c) 1997,2003,2014,2022 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 class manages a list of open tables, open indices are connected to the open tables
*/
#ifndef __XB_XBSQL_H__
#define __XB_XBSQL_H__
#ifdef CMAKE_COMPILER_IS_GNUCC
#pragma interface
#endif
#ifdef XB_SQL_SUPPORT
namespace xb{
struct XBDLLEXPORT xbSqlFld{
char cType; // F - Database field
// L - Literal
// E - Expression
xbInt16 iFldNo; // Field number if db field
xbExp * pExp; // If cType=E, pointer to parsed expression
xbString sFldAlias; // Alias name for query display
xbSqlFld * Next; // Next field in list
};
class xbStmt;
struct XBDLLEXPORT xbTblJoin { // structure for defining joined tables in the query
xbString sTableName;
xbString sAlias;
xbString sJoinExp; // table join expression
xbDbf *pDbf; // pointer the the dbf structure for this table
xbTag *pTag; // pointer to relevant tag for this table, null for record order
xbExp *pLinkExp; // pointer to parsed linkage expression
char cJoinType; // M - Master
// L - Left or Full Left
// R - Right or Full Right
// I - Inner
// O - Outer or Full Outer Outer
xbTblJoin *pMaster; // pointer to master table, null if this is the primary master
xbLinkList<xbTblJoin *> llSubList; // linked list of subordinate tables
// xbStmt *pSubQuery; // pointer to sub query
xbTblJoin *next; // next tbl
};
class XBDLLEXPORT xbStmt : public xbSsv{
public:
xbStmt( xbXBase *x );
~xbStmt();
#ifdef XB_DEBUG_SUPPORT
xbInt16 DumpStmtInternals();
xbInt16 Test();
#endif
xbInt16 ExecuteQuery( const xbString &sCmdLine );
// xbInt16 FetchFirst();
// xbInt16 FetchNext();
// xbInt16 FetchPrev();
// xbInt16 FetchLast();
// xbString &GetField( const xbString sFldName );
protected:
private:
xbInt16 AddQryTbl( const xbString &sTable, const xbString &sAlias, const xbString &sExpression, const char cJoinType );
xbInt16 CvtSqlExp2DbaseExp( const xbString &sExpIn, xbString &sExpOut );
xbInt16 GetNextFromSeg( const xbString &sLineIn, xbString &sFromSegOut );
xbUInt32 GetNextToken( const xbString &sCmdLineIn, xbString &sTokenOut, xbUInt32 ulStartPos );
xbInt16 GetParenCnt( const xbString &sToken );
xbInt16 ParseFromStmt( const xbString &sFromLine );
xbInt16 ParseStmt( const xbString &sCmdLine );
xbInt16 ProcessFromSeg( const xbString &sFromStmtSeg );
xbInt16 UpdateJoinList( char cType, const xbString &sTableName, const xbString &sAlias, const xbString &sExp, xbDbf *d, xbExp *e ); //, xbTag *t);
xbXBase *xbase; // pointer to xbase structure
xbTblJoin * pTblList;
xbSqlFld *fl; // field list in sql select statement
xbString sStmt; // complete query statment
xbString sFields; // list of fields
xbString sFrom; // from statment
xbString sWhere; // where clause
xbString sOrderBy; // sort order
xbString sGroupBy; // group by
xbString sHaving; // having
xbUInt32 ulFromPos;
xbUInt32 ulWherePos;
xbUInt32 ulOrderByPos;
xbUInt32 ulGroupByPos;
xbUInt32 ulHavingPos;
};
class XBDLLEXPORT xbSql : public xbSsv {
public:
// xbSql();
xbSql( xbXBase *x );
~xbSql();
xbInt16 ExecuteNonQuery( const xbString &sCmdLine );
xbXBase *GetXbasePtr() const;
protected:
private:
xbInt16 SqlAlterTable( const xbString &sCmdLine );
xbInt16 SqlCreateTable( const xbString &sCmdLine );
xbInt16 SqlDelete( const xbString &sCmdLine );
xbInt16 SqlDropTable( const xbString &sCmdLine );
#ifdef XB_INDEX_SUPPORT
xbInt16 SqlCreateIndex( const xbString &sCmdLine );
xbInt16 SqlDropIndex( const xbString &sCmdLine );
#endif // XB_INDEX_SUPPORT
// xbInt16 SqlCreateView( const xbString &sCmdLine );
// xbInt16 SqlDropView( const xbString &sCmdLine );
// xbInt16 SqlUpdate( const xbString &sCmdLine );
// xbInt16 SqlSelect( const xbString &sCmdLine );
void SqlHelp() const;
xbInt16 SqlInsert( const xbString &sCmLine );
xbInt16 SqlSet( const xbString &sCmdLine );
xbInt16 SqlUse( const xbString &sCmdLine );
xbXBase *xbase;
xbUda uda;
};
} /* namespace xb */
#endif /* XB_SQL_SUPPORT */
#endif /* __XB_XBSQL_H__ */
|
