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Редакция 35 | Редакция 37 | ||
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1 | #include "tablefield.h"
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1 | #include "tablefield.h"
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2 | 2 | ||
3 | /*TableField::TableField()
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3 | /*TableField::TableField()
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4 | {
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4 | {
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5 | }
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5 | }
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6 | */
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6 | */
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7 | 7 | ||
8 | /***********************************************************************************************
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8 | /***********************************************************************************************
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9 | ** Êîíñòðóêòîð êëàññà TableField èìååò îäèí îáÿçàòåëüíûé ïàðàìåòð - èìÿ ïîëÿ
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9 | ** Êîíñòðóêòîð êëàññà TableField èìååò îäèí îáÿçàòåëüíûé ïàðàìåòð - èìÿ ïîëÿ
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10 | ** îñòàëüíûå ïàðàìåòðû èìåþò çíà÷åíèÿ ïî óìîë÷àíèþ:
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10 | ** îñòàëüíûå ïàðàìåòðû èìåþò çíà÷åíèÿ ïî óìîë÷àíèþ:
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11 | ** *parent = 0 (íåò "ðîäèòåëüñêîãî" îáúåêòà)
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11 | ** *parent = 0 (íåò "ðîäèòåëüñêîãî" îáúåêòà)
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12 | ** ftype = CHAR(30) (òèï õðàíèìûõ â ïîëå äàííûõ - ñòðîêà èç 30 ñèìâîëîâ)
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12 | ** ftype = CHAR(30) (òèï õðàíèìûõ â ïîëå äàííûõ - ñòðîêà èç 30 ñèìâîëîâ)
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13 | ** fdefaultValue = NULL (äàííûå â ïîëå ìîãóò èìåòü "ïóñòîå" çíà÷åíèå)
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13 | ** fdefaultValue = NULL (äàííûå â ïîëå ìîãóò èìåòü "ïóñòîå" çíà÷åíèå)
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14 | ***********************************************************************************************/
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14 | ***********************************************************************************************/
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15 | 15 | ||
16 | TableField::TableField(QString fname, QObject *parent, QString ftype, QString fdefaultValue): |
16 | TableField::TableField(QString fname, QObject *parent, QString ftype, QString fdefaultValue): |
17 | QObject(parent) |
17 | QObject(parent) |
18 | {
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18 | {
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19 | fieldName = fname; |
19 | fieldName = fname; |
20 | fieldType = ftype; |
20 | fieldType = ftype; |
21 | defaultValue = fdefaultValue; |
21 | defaultValue = fdefaultValue; |
22 | notNull = false; // ïî óìîë÷àíèþ äàííûå â ïîëå ìîãóò îòñóòñòâîâàòü (áûòü NULL) |
22 | notNull = false; // ïî óìîë÷àíèþ äàííûå â ïîëå ìîãóò îòñóòñòâîâàòü (áûòü NULL) |
23 | characterSet = ""; // êîäèðîâêà ïî óìîë÷àíèþ (íå óêàçûâàòü êîäèðîâêó) |
23 | characterSet = ""; // êîäèðîâêà ïî óìîë÷àíèþ (íå óêàçûâàòü êîäèðîâêó) |
24 | createSqlString(); // ñôîðìèðóåì ñòðîêó Sql-çàïðîñà, êîòîðàÿ ñîçäàåò â áàçå äàííûõ ñîîòâåòñòâóþùåå ïîëå |
24 | createSqlString(); // ñôîðìèðóåì ñòðîêó Sql-çàïðîñà, êîòîðàÿ ñîçäàåò â áàçå äàííûõ ñîîòâåòñòâóþùåå ïîëå |
25 | }
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25 | }
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26 | 26 | ||
27 | 27 | ||
28 | 28 | ||
29 | /*******************************************************************
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29 | /*******************************************************************
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30 | ** Ôóíêöèÿ óñòàíàâëèâàò ïåðåííóþ name (èìÿ ïîëÿ),
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30 | ** Ôóíêöèÿ óñòàíàâëèâàò ïåðåííóþ name (èìÿ ïîëÿ),
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31 | **
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31 | **
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32 | *******************************************************************/
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32 | *******************************************************************/
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33 | 33 | ||
34 | 34 | ||
35 | 35 | ||
36 | void TableField::setName(QString name){ |
36 | void TableField::setName(QString name){ |
37 | TableField::fieldName = name; |
37 | TableField::fieldName = name; |
38 | TableField::createSqlString(); |
38 | TableField::createSqlString(); |
39 | }
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39 | }
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40 | 40 | ||
41 | 41 | ||
42 | QString TableField::name(){ |
42 | QString TableField::name(){ |
43 | return TableField::fieldName; |
43 | return TableField::fieldName; |
44 | }
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44 | }
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45 | 45 | ||
46 | QString TableField::type(){ |
46 | QString TableField::type(){ |
47 | return TableField::fieldType; |
47 | return TableField::fieldType; |
48 | }
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48 | }
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49 | 49 | ||
50 | void TableField::setType(QString ftype){ |
50 | void TableField::setType(QString ftype){ |
51 | TableField::fieldType = ftype; |
51 | TableField::fieldType = ftype; |
52 | TableField::createSqlString(); |
52 | TableField::createSqlString(); |
53 | }
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53 | }
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54 | 54 | ||
55 | /*************************************************************************
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55 | /*************************************************************************
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56 | ** Ôóíêöèÿ isNotNull() âîçâðàùàåò true, åñëè ïîëå èìååò àòðèáóò "NOT NULL"
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56 | ** Ôóíêöèÿ isNotNull() âîçâðàùàåò true, åñëè ïîëå èìååò àòðèáóò "NOT NULL"
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57 | ** Èíà÷å - âîçâðàùàåò false
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57 | ** Èíà÷å - âîçâðàùàåò false
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58 | *************************************************************************/
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58 | *************************************************************************/
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59 | 59 | ||
60 | bool TableField::isNotNull(){ |
60 | bool TableField::isNotNull(){ |
61 | return TableField::notNull; |
61 | return TableField::notNull; |
62 | }
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62 | }
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63 | 63 | ||
64 | /*******************************************************************
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64 | /*******************************************************************
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65 | ** Ôóíêöèÿ óñòàíàâëèâàåò àòðèáóò ïîëÿ "NOT NULL"
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65 | ** Ôóíêöèÿ óñòàíàâëèâàåò àòðèáóò ïîëÿ "NOT NULL"
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66 | ** Çíà÷åíèå ïåðåäàåòñÿ ÷åðåç ïàðàìåòð ôóíêöèè
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66 | ** Çíà÷åíèå ïåðåäàåòñÿ ÷åðåç ïàðàìåòð ôóíêöèè
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67 | *******************************************************************/
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67 | *******************************************************************/
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68 | 68 | ||
69 | 69 | ||
70 | void TableField::setNotNull(bool fnotNull){ |
70 | void TableField::setNotNull(bool fnotNull){ |
71 | if ((fnotNull) && (defaultValue == "NULL")) defaultValue = ""; // ïîëå íå ìîæåò áûòü ïóñòûì, ïîýòîìó, åñëè çíà÷åíèå ïî óìîë÷àíèþ NULL, ïîìåíÿåì åãî íà ïóñòóþ ñòðîêó |
71 | if ((fnotNull) && (defaultValue == "NULL")) defaultValue = ""; // ïîëå íå ìîæåò áûòü ïóñòûì, ïîýòîìó, åñëè çíà÷åíèå ïî óìîë÷àíèþ NULL, ïîìåíÿåì åãî íà ïóñòóþ ñòðîêó |
72 | TableField::notNull = fnotNull; |
72 | TableField::notNull = fnotNull; |
73 | TableField::createSqlString(); // Ãåíåðèðóåò ñòðîêó Sql-çàïðîñà ñ íîâûìè ïàðàìåòðàìè |
73 | TableField::createSqlString(); // Ãåíåðèðóåò ñòðîêó Sql-çàïðîñà ñ íîâûìè ïàðàìåòðàìè |
74 | }
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74 | }
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75 | 75 | ||
76 | 76 | ||
77 | /********************************************************************************************
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77 | /********************************************************************************************
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78 | ** Ôóíêöèÿ ãåíåðèðóåò ñòðîêó Sql-çàïðîñà, êîòîðàÿ ñîçäàåò â áàçå äàííûõ ñîîòâåòñòâóþùåå ïîëå
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78 | ** Ôóíêöèÿ ãåíåðèðóåò ñòðîêó Sql-çàïðîñà, êîòîðàÿ ñîçäàåò â áàçå äàííûõ ñîîòâåòñòâóþùåå ïîëå
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79 | ** è ïðèñâàèâàåò ïîëó÷åííîå çíà÷åíèå ïåðåìåííîé SqlString
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79 | ** è ïðèñâàèâàåò ïîëó÷åííîå çíà÷åíèå ïåðåìåííîé SqlString
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80 | ********************************************************************************************/
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80 | ********************************************************************************************/
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81 | 81 | ||
82 | void TableField::createSqlString(){ |
82 | void TableField::createSqlString(){ |
83 | QString str_tmp = ""; |
83 | QString str_tmp = ""; |
84 | str_tmp.append(tr("'")); |
84 | str_tmp.append(tr("'")); |
85 | str_tmp.append(fieldName); |
85 | str_tmp.append(fieldName); |
86 | str_tmp.append(tr("' ")); |
86 | str_tmp.append(tr("' ")); |
87 | str_tmp.append(fieldType); |
87 | str_tmp.append(fieldType); |
88 | //str_tmp.append(tr(" "));
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88 | //str_tmp.append(tr(" "));
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89 | if (characterSet !="") { |
89 | if (characterSet !="") { |
90 | str_tmp.append(tr(" character set")); |
90 | str_tmp.append(tr(" character set")); |
91 | str_tmp.append(characterSet); |
91 | str_tmp.append(characterSet); |
92 | }
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92 | }
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93 | if (notNull) { str_tmp.append(tr(" NOT NULL")); } |
93 | if (notNull) { str_tmp.append(tr(" NOT NULL")); } |
94 | if (defaultValue !="") { |
94 | if (defaultValue !="") { |
95 | str_tmp.append(tr(" default '")); |
95 | str_tmp.append(tr(" default '")); |
96 | str_tmp.append(defaultValue); |
96 | str_tmp.append(defaultValue); |
97 | str_tmp.append(tr("'"));} |
97 | str_tmp.append(tr("'"));} |
98 | 98 | ||
99 | TableField::SqlString = str_tmp; |
99 | TableField::SqlString = str_tmp; |
100 | }
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100 | }
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101 | 101 | ||
102 | 102 | ||
103 | QString TableField::sqlString(){ |
103 | QString TableField::sqlString(){ |
104 | return TableField::SqlString; |
104 | return TableField::SqlString; |
105 | }
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105 | }
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106 | 106 | ||
107 | 107 | ||
108 | void TableField::setDefaultValue(QString fdefaultValue){ |
108 | void TableField::setDefaultValue(QString fdefaultValue){ |
109 | TableField::defaultValue = fdefaultValue; |
109 | TableField::defaultValue = fdefaultValue; |
110 | TableField::createSqlString(); |
110 | TableField::createSqlString(); |
111 | }
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111 | }
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112 | 112 | ||
113 | 113 |