1 | <?php |
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2 | /* |
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3 | V4.94 23 Jan 2007 (c) 2000-2007 John Lim (jlim#natsoft.com.my). All rights reserved. |
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4 | Released under both BSD license and Lesser GPL library license. |
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5 | Whenever there is any discrepancy between the two licenses, |
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6 | the BSD license will take precedence. |
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7 | |
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8 | Latest version is available at http://adodb.sourceforge.net |
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9 | |
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10 | SQLite info: http://www.hwaci.com/sw/sqlite/ |
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11 | |
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12 | Install Instructions: |
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13 | ==================== |
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14 | 1. Place this in adodb/drivers |
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15 | 2. Rename the file, remove the .txt prefix. |
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16 | */ |
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17 | |
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18 | // security - hide paths |
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19 | if (!defined('ADODB_DIR')) die(); |
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20 | |
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21 | class ADODB_sqlite extends ADOConnection { |
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22 | var $databaseType = "sqlite"; |
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23 | var $replaceQuote = "''"; // string to use to replace quotes |
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24 | var $concat_operator='||'; |
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25 | var $_errorNo = 0; |
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26 | var $hasLimit = true; |
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27 | var $hasInsertID = true; /// supports autoincrement ID? |
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28 | var $hasAffectedRows = true; /// supports affected rows for update/delete? |
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29 | var $metaTablesSQL = "SELECT name FROM sqlite_master WHERE type='table' ORDER BY name"; |
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30 | var $sysDate = "adodb_date('Y-m-d')"; |
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31 | var $sysTimeStamp = "adodb_date('Y-m-d H:i:s')"; |
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32 | var $fmtTimeStamp = "'Y-m-d H:i:s'"; |
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33 | |
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34 | function ADODB_sqlite() |
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35 | { |
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36 | } |
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37 | |
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38 | /* |
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39 | function __get($name) |
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40 | { |
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41 | switch($name) { |
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42 | case 'sysDate': return "'".date($this->fmtDate)."'"; |
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43 | case 'sysTimeStamp' : return "'".date($this->sysTimeStamp)."'"; |
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44 | } |
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45 | }*/ |
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46 | |
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47 | function ServerInfo() |
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48 | { |
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49 | $arr['version'] = sqlite_libversion(); |
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50 | $arr['description'] = 'SQLite '; |
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51 | $arr['encoding'] = sqlite_libencoding(); |
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52 | return $arr; |
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53 | } |
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54 | |
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55 | function BeginTrans() |
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56 | { |
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57 | if ($this->transOff) return true; |
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58 | $ret = $this->Execute("BEGIN TRANSACTION"); |
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59 | $this->transCnt += 1; |
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60 | return true; |
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61 | } |
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62 | |
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63 | function CommitTrans($ok=true) |
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64 | { |
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65 | if ($this->transOff) return true; |
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66 | if (!$ok) return $this->RollbackTrans(); |
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67 | $ret = $this->Execute("COMMIT"); |
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68 | if ($this->transCnt>0)$this->transCnt -= 1; |
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69 | return !empty($ret); |
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70 | } |
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71 | |
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72 | function RollbackTrans() |
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73 | { |
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74 | if ($this->transOff) return true; |
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75 | $ret = $this->Execute("ROLLBACK"); |
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76 | if ($this->transCnt>0)$this->transCnt -= 1; |
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77 | return !empty($ret); |
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78 | } |
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79 | |
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80 | // mark newnham |
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81 | function &MetaColumns($tab) |
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82 | { |
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83 | global $ADODB_FETCH_MODE; |
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84 | $false = false; |
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85 | $save = $ADODB_FETCH_MODE; |
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86 | $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC; |
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87 | if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false); |
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88 | $rs = $this->Execute("PRAGMA table_info('$tab')"); |
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89 | if (isset($savem)) $this->SetFetchMode($savem); |
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90 | if (!$rs) { |
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91 | $ADODB_FETCH_MODE = $save; |
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92 | return $false; |
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93 | } |
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94 | $arr = array(); |
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95 | while ($r = $rs->FetchRow()) { |
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96 | $type = explode('(',$r['type']); |
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97 | $size = ''; |
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98 | if (sizeof($type)==2) |
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99 | $size = trim($type[1],')'); |
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100 | $fn = strtoupper($r['name']); |
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101 | $fld = new ADOFieldObject; |
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102 | $fld->name = $r['name']; |
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103 | $fld->type = $type[0]; |
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104 | $fld->max_length = $size; |
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105 | $fld->not_null = $r['notnull']; |
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106 | $fld->default_value = $r['dflt_value']; |
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107 | $fld->scale = 0; |
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108 | if ($save == ADODB_FETCH_NUM) $arr[] = $fld; |
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109 | else $arr[strtoupper($fld->name)] = $fld; |
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110 | } |
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111 | $rs->Close(); |
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112 | $ADODB_FETCH_MODE = $save; |
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113 | return $arr; |
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114 | } |
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115 | |
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116 | function _init($parentDriver) |
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117 | { |
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118 | |
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119 | $parentDriver->hasTransactions = false; |
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120 | $parentDriver->hasInsertID = true; |
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121 | } |
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122 | |
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123 | function _insertid() |
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124 | { |
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125 | return sqlite_last_insert_rowid($this->_connectionID); |
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126 | } |
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127 | |
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128 | function _affectedrows() |
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129 | { |
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130 | return sqlite_changes($this->_connectionID); |
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131 | } |
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132 | |
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133 | function ErrorMsg() |
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134 | { |
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135 | if ($this->_logsql) return $this->_errorMsg; |
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136 | return ($this->_errorNo) ? sqlite_error_string($this->_errorNo) : ''; |
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137 | } |
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138 | |
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139 | function ErrorNo() |
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140 | { |
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141 | return $this->_errorNo; |
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142 | } |
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143 | |
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144 | function SQLDate($fmt, $col=false) |
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145 | { |
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146 | $fmt = $this->qstr($fmt); |
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147 | return ($col) ? "adodb_date2($fmt,$col)" : "adodb_date($fmt)"; |
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148 | } |
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149 | |
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150 | |
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151 | function _createFunctions() |
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152 | { |
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153 | @sqlite_create_function($this->_connectionID, 'adodb_date', 'adodb_date', 1); |
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154 | @sqlite_create_function($this->_connectionID, 'adodb_date2', 'adodb_date2', 2); |
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155 | } |
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156 | |
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157 | |
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158 | // returns true or false |
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159 | function _connect($argHostname, $argUsername, $argPassword, $argDatabasename) |
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160 | { |
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161 | if (!function_exists('sqlite_open')) return null; |
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162 | if (empty($argHostname) && $argDatabasename) $argHostname = $argDatabasename; |
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163 | |
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164 | $this->_connectionID = sqlite_open($argHostname); |
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165 | if ($this->_connectionID === false) return false; |
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166 | $this->_createFunctions(); |
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167 | return true; |
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168 | } |
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169 | |
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170 | // returns true or false |
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171 | function _pconnect($argHostname, $argUsername, $argPassword, $argDatabasename) |
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172 | { |
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173 | if (!function_exists('sqlite_open')) return null; |
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174 | if (empty($argHostname) && $argDatabasename) $argHostname = $argDatabasename; |
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175 | |
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176 | $this->_connectionID = sqlite_popen($argHostname); |
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177 | if ($this->_connectionID === false) return false; |
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178 | $this->_createFunctions(); |
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179 | return true; |
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180 | } |
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181 | |
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182 | // returns query ID if successful, otherwise false |
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183 | function _query($sql,$inputarr=false) |
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184 | { |
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185 | $rez = sqlite_query($sql,$this->_connectionID); |
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186 | if (!$rez) { |
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187 | $this->_errorNo = sqlite_last_error($this->_connectionID); |
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188 | } |
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189 | |
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190 | return $rez; |
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191 | } |
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192 | |
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193 | function &SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs2cache=0) |
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194 | { |
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195 | $offsetStr = ($offset >= 0) ? " OFFSET $offset" : ''; |
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196 | $limitStr = ($nrows >= 0) ? " LIMIT $nrows" : ($offset >= 0 ? ' LIMIT 999999999' : ''); |
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197 | if ($secs2cache) |
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198 | $rs =& $this->CacheExecute($secs2cache,$sql."$limitStr$offsetStr",$inputarr); |
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199 | else |
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200 | $rs =& $this->Execute($sql."$limitStr$offsetStr",$inputarr); |
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201 | |
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202 | return $rs; |
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203 | } |
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204 | |
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205 | /* |
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206 | This algorithm is not very efficient, but works even if table locking |
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207 | is not available. |
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208 | |
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209 | Will return false if unable to generate an ID after $MAXLOOPS attempts. |
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210 | */ |
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211 | var $_genSeqSQL = "create table %s (id integer)"; |
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212 | |
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213 | function GenID($seq='adodbseq',$start=1) |
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214 | { |
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215 | // if you have to modify the parameter below, your database is overloaded, |
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216 | // or you need to implement generation of id's yourself! |
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217 | $MAXLOOPS = 100; |
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218 | //$this->debug=1; |
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219 | while (--$MAXLOOPS>=0) { |
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220 | @($num = $this->GetOne("select id from $seq")); |
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221 | if ($num === false) { |
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222 | $this->Execute(sprintf($this->_genSeqSQL ,$seq)); |
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223 | $start -= 1; |
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224 | $num = '0'; |
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225 | $ok = $this->Execute("insert into $seq values($start)"); |
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226 | if (!$ok) return false; |
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227 | } |
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228 | $this->Execute("update $seq set id=id+1 where id=$num"); |
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229 | |
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230 | if ($this->affected_rows() > 0) { |
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231 | $num += 1; |
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232 | $this->genID = $num; |
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233 | return $num; |
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234 | } |
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235 | } |
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236 | if ($fn = $this->raiseErrorFn) { |
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237 | $fn($this->databaseType,'GENID',-32000,"Unable to generate unique id after $MAXLOOPS attempts",$seq,$num); |
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238 | } |
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239 | return false; |
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240 | } |
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241 | |
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242 | function CreateSequence($seqname='adodbseq',$start=1) |
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243 | { |
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244 | if (empty($this->_genSeqSQL)) return false; |
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245 | $ok = $this->Execute(sprintf($this->_genSeqSQL,$seqname)); |
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246 | if (!$ok) return false; |
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247 | $start -= 1; |
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248 | return $this->Execute("insert into $seqname values($start)"); |
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249 | } |
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250 | |
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251 | var $_dropSeqSQL = 'drop table %s'; |
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252 | function DropSequence($seqname) |
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253 | { |
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254 | if (empty($this->_dropSeqSQL)) return false; |
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255 | return $this->Execute(sprintf($this->_dropSeqSQL,$seqname)); |
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256 | } |
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257 | |
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258 | // returns true or false |
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259 | function _close() |
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260 | { |
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261 | return @sqlite_close($this->_connectionID); |
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262 | } |
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263 | |
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264 | function &MetaIndexes($table, $primary = FALSE, $owner=false) |
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265 | { |
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266 | $false = false; |
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267 | // save old fetch mode |
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268 | global $ADODB_FETCH_MODE; |
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269 | $save = $ADODB_FETCH_MODE; |
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270 | $ADODB_FETCH_MODE = ADODB_FETCH_NUM; |
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271 | if ($this->fetchMode !== FALSE) { |
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272 | $savem = $this->SetFetchMode(FALSE); |
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273 | } |
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274 | $SQL=sprintf("SELECT name,sql FROM sqlite_master WHERE type='index' AND tbl_name='%s'", strtolower($table)); |
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275 | $rs = $this->Execute($SQL); |
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276 | if (!is_object($rs)) { |
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277 | if (isset($savem)) |
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278 | $this->SetFetchMode($savem); |
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279 | $ADODB_FETCH_MODE = $save; |
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280 | return $false; |
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281 | } |
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282 | |
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283 | $indexes = array (); |
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284 | while ($row = $rs->FetchRow()) { |
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285 | if ($primary && preg_match("/primary/i",$row[1]) == 0) continue; |
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286 | if (!isset($indexes[$row[0]])) { |
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287 | |
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288 | $indexes[$row[0]] = array( |
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289 | 'unique' => preg_match("/unique/i",$row[1]), |
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290 | 'columns' => array()); |
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291 | } |
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292 | /** |
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293 | * There must be a more elegant way of doing this, |
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294 | * the index elements appear in the SQL statement |
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295 | * in cols[1] between parentheses |
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296 | * e.g CREATE UNIQUE INDEX ware_0 ON warehouse (org,warehouse) |
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297 | */ |
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298 | $cols = explode("(",$row[1]); |
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299 | $cols = explode(")",$cols[1]); |
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300 | array_pop($cols); |
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301 | $indexes[$row[0]]['columns'] = $cols; |
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302 | } |
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303 | if (isset($savem)) { |
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304 | $this->SetFetchMode($savem); |
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305 | $ADODB_FETCH_MODE = $save; |
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306 | } |
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307 | return $indexes; |
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308 | } |
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309 | |
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310 | } |
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311 | |
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312 | /*-------------------------------------------------------------------------------------- |
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313 | Class Name: Recordset |
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314 | --------------------------------------------------------------------------------------*/ |
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315 | |
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316 | class ADORecordset_sqlite extends ADORecordSet { |
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317 | |
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318 | var $databaseType = "sqlite"; |
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319 | var $bind = false; |
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320 | |
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321 | function ADORecordset_sqlite($queryID,$mode=false) |
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322 | { |
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323 | |
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324 | if ($mode === false) { |
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325 | global $ADODB_FETCH_MODE; |
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326 | $mode = $ADODB_FETCH_MODE; |
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327 | } |
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328 | switch($mode) { |
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329 | case ADODB_FETCH_NUM: $this->fetchMode = SQLITE_NUM; break; |
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330 | case ADODB_FETCH_ASSOC: $this->fetchMode = SQLITE_ASSOC; break; |
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331 | default: $this->fetchMode = SQLITE_BOTH; break; |
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332 | } |
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333 | $this->adodbFetchMode = $mode; |
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334 | |
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335 | $this->_queryID = $queryID; |
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336 | |
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337 | $this->_inited = true; |
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338 | $this->fields = array(); |
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339 | if ($queryID) { |
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340 | $this->_currentRow = 0; |
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341 | $this->EOF = !$this->_fetch(); |
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342 | @$this->_initrs(); |
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343 | } else { |
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344 | $this->_numOfRows = 0; |
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345 | $this->_numOfFields = 0; |
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346 | $this->EOF = true; |
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347 | } |
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348 | |
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349 | return $this->_queryID; |
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350 | } |
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351 | |
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352 | |
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353 | function &FetchField($fieldOffset = -1) |
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354 | { |
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355 | $fld = new ADOFieldObject; |
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356 | $fld->name = sqlite_field_name($this->_queryID, $fieldOffset); |
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357 | $fld->type = 'VARCHAR'; |
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358 | $fld->max_length = -1; |
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359 | return $fld; |
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360 | } |
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361 | |
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362 | function _initrs() |
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363 | { |
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364 | $this->_numOfRows = @sqlite_num_rows($this->_queryID); |
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365 | $this->_numOfFields = @sqlite_num_fields($this->_queryID); |
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366 | } |
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367 | |
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368 | function Fields($colname) |
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369 | { |
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370 | if ($this->fetchMode != SQLITE_NUM) return $this->fields[$colname]; |
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371 | if (!$this->bind) { |
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372 | $this->bind = array(); |
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373 | for ($i=0; $i < $this->_numOfFields; $i++) { |
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374 | $o = $this->FetchField($i); |
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375 | $this->bind[strtoupper($o->name)] = $i; |
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376 | } |
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377 | } |
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378 | |
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379 | return $this->fields[$this->bind[strtoupper($colname)]]; |
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380 | } |
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381 | |
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382 | function _seek($row) |
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383 | { |
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384 | return sqlite_seek($this->_queryID, $row); |
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385 | } |
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386 | |
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387 | function _fetch($ignore_fields=false) |
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388 | { |
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389 | $this->fields = @sqlite_fetch_array($this->_queryID,$this->fetchMode); |
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390 | return !empty($this->fields); |
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391 | } |
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392 | |
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393 | function _close() |
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394 | { |
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395 | } |
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396 | |
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397 | } |
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398 | ?> |
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