Annotation of parser3/src/include/pa_table.h, revision 1.27
1.14 paf 1: /** @file
1.15 paf 2: Parser: table class decl.
3:
1.9 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.15 paf 5:
1.10 paf 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.9 paf 7:
1.27 ! paf 8: $Id: pa_table.h,v 1.26 2001/03/28 14:07:16 paf Exp $
1.1 paf 9: */
10:
11: #ifndef PA_TABLE_H
12: #define PA_TABLE_H
13:
14: #include "pa_types.h"
15: #include "pa_array.h"
16: #include "pa_hash.h"
1.2 paf 17: #include "pa_string.h"
18: #include "pa_request.h"
1.1 paf 19:
1.16 paf 20: /**
1.19 paf 21: VTable backend.
1.16 paf 22:
23: holds:
1.14 paf 24: - column names[if any]
25: - data rows
26: - current row pointer
27:
28: uses String for column names and data items
29:
30: hence most of tables are "named", no need to uptimize nameless onces
31: */
1.1 paf 32: class Table : public Array {
33: public:
34:
1.11 paf 35: Table(Pool& apool,
1.21 paf 36: const String *aorigin,
1.2 paf 37: Array *acolumns,
38: int initial_rows=CR_INITIAL_ROWS_DEFAULT);
39:
1.21 paf 40: /// where this table came from, may be NULL
41: const String *origin_string() { return forigin_string; }
42:
1.14 paf 43: /// column names
1.5 paf 44: const Array *columns() { return fcolumns; }
45:
1.18 paf 46: /// moves @a current pointer
1.5 paf 47: void set_current(int acurrent) { fcurrent=acurrent; }
1.17 paf 48: /// @return current pointer
1.25 paf 49: int current() { return fcurrent; }
50: void shift(int offset);
1.5 paf 51:
1.26 paf 52: /// @return item from @a column
53: const String *item(int column) const;
54: /// @return item from @a column
1.24 paf 55: const String *item(const String& column) const {
56: return item(column_name2index(column));
57: }
1.23 paf 58:
59: /// saves to text file
60: void save(bool nameless_save, const String& file_spec);
1.2 paf 61:
1.26 paf 62: bool locate(int column, const String& value);
63: bool locate(const String& column, const String& value) {
64: return locate(column_name2index(column), value);
65: }
1.24 paf 66:
1.27 ! paf 67: const Array& at(int index) const {
! 68: // force @c const result
! 69: return *const_cast<const Array *>(static_cast<Array *>(get(index)));
! 70: }
! 71:
1.12 paf 72: private:
1.21 paf 73:
74: // where this table came from, may be NULL
75: const String *forigin_string;
1.5 paf 76:
1.1 paf 77: // column name->number lookup table
78: Hash name2number;
79:
1.5 paf 80: // current row
81: int fcurrent;
82:
83: // columns
84: Array *fcolumns;
85:
1.24 paf 86: bool valid(int index) const { return index>=0 && index<size(); }
87:
88: /// @return column index from @a column_name
1.25 paf 89: int column_name2index(const String& column) const;
1.12 paf 90:
1.2 paf 91:
1.1 paf 92: };
93:
94: #endif
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