[8222] | 1 | <?php |
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| 2 | |
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| 3 | /* |
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| 4 | V5.18 3 Sep 2012 (c) 2000-2012 John Lim (jlim#natsoft.com). All rights reserved. |
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| 5 | Released under both BSD license and Lesser GPL library license. |
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| 6 | Whenever there is any discrepancy between the two licenses, |
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| 7 | the BSD license will take precedence. See License.txt. |
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| 8 | Set tabs to 4 for best viewing. |
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| 9 | |
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| 10 | Latest version is available at http://adodb.sourceforge.net |
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| 11 | |
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| 12 | Thanks Diogo Toscano (diogo#scriptcase.net) for the code. |
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| 13 | And also Sid Dunayer [sdunayer#interserv.com] for extensive fixes. |
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| 14 | */ |
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| 15 | |
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| 16 | class ADODB_pdo_sqlite extends ADODB_pdo { |
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| 17 | var $metaTablesSQL = "SELECT name FROM sqlite_master WHERE type='table'"; |
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| 18 | var $sysDate = 'current_date'; |
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| 19 | var $sysTimeStamp = 'current_timestamp'; |
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| 20 | var $nameQuote = '`'; |
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| 21 | var $replaceQuote = "''"; |
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| 22 | var $hasGenID = true; |
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| 23 | var $_genIDSQL = "UPDATE %s SET id=id+1 WHERE id=%s"; |
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| 24 | var $_genSeqSQL = "CREATE TABLE %s (id integer)"; |
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| 25 | var $_genSeqCountSQL = 'SELECT COUNT(*) FROM %s'; |
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| 26 | var $_genSeq2SQL = 'INSERT INTO %s VALUES(%s)'; |
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| 27 | var $_dropSeqSQL = 'DROP TABLE %s'; |
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| 28 | var $concat_operator = '||'; |
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| 29 | var $pdoDriver = false; |
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| 30 | var $random='abs(random())'; |
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| 31 | |
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| 32 | function _init($parentDriver) |
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| 33 | { |
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| 34 | $this->pdoDriver = $parentDriver; |
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| 35 | $parentDriver->_bindInputArray = true; |
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| 36 | $parentDriver->hasTransactions = false; // // should be set to false because of PDO SQLite driver not supporting changing autocommit mode |
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| 37 | $parentDriver->hasInsertID = true; |
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| 38 | } |
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| 39 | |
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| 40 | function ServerInfo() |
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| 41 | { |
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| 42 | $parent = $this->pdoDriver; |
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| 43 | @($ver = array_pop($parent->GetCol("SELECT sqlite_version()"))); |
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| 44 | @($enc = array_pop($parent->GetCol("PRAGMA encoding"))); |
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| 45 | |
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| 46 | $arr['version'] = $ver; |
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| 47 | $arr['description'] = 'SQLite '; |
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| 48 | $arr['encoding'] = $enc; |
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| 49 | |
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| 50 | return $arr; |
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| 51 | } |
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| 52 | |
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| 53 | function SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs2cache=0) |
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| 54 | { |
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| 55 | $parent = $this->pdoDriver; |
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| 56 | $offsetStr = ($offset >= 0) ? " OFFSET $offset" : ''; |
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| 57 | $limitStr = ($nrows >= 0) ? " LIMIT $nrows" : ($offset >= 0 ? ' LIMIT 999999999' : ''); |
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| 58 | if ($secs2cache) |
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| 59 | $rs = $parent->CacheExecute($secs2cache,$sql."$limitStr$offsetStr",$inputarr); |
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| 60 | else |
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| 61 | $rs = $parent->Execute($sql."$limitStr$offsetStr",$inputarr); |
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| 62 | |
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| 63 | return $rs; |
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| 64 | } |
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| 65 | |
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| 66 | function GenID($seq='adodbseq',$start=1) |
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| 67 | { |
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| 68 | $parent = $this->pdoDriver; |
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| 69 | // if you have to modify the parameter below, your database is overloaded, |
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| 70 | // or you need to implement generation of id's yourself! |
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| 71 | $MAXLOOPS = 100; |
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| 72 | while (--$MAXLOOPS>=0) { |
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| 73 | @($num = array_pop($parent->GetCol("SELECT id FROM {$seq}"))); |
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| 74 | if ($num === false || !is_numeric($num)) { |
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| 75 | @$parent->Execute(sprintf($this->_genSeqSQL ,$seq)); |
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| 76 | $start -= 1; |
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| 77 | $num = '0'; |
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| 78 | $cnt = $parent->GetOne(sprintf($this->_genSeqCountSQL,$seq)); |
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| 79 | if (!$cnt) { |
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| 80 | $ok = $parent->Execute(sprintf($this->_genSeq2SQL,$seq,$start)); |
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| 81 | } |
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| 82 | if (!$ok) return false; |
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| 83 | } |
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| 84 | $parent->Execute(sprintf($this->_genIDSQL,$seq,$num)); |
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| 85 | |
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| 86 | if ($parent->affected_rows() > 0) { |
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| 87 | $num += 1; |
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| 88 | $parent->genID = intval($num); |
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| 89 | return intval($num); |
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| 90 | } |
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| 91 | } |
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| 92 | if ($fn = $parent->raiseErrorFn) { |
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| 93 | $fn($parent->databaseType,'GENID',-32000,"Unable to generate unique id after $MAXLOOPS attempts",$seq,$num); |
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| 94 | } |
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| 95 | return false; |
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| 96 | } |
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| 97 | |
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| 98 | function CreateSequence($seqname='adodbseq',$start=1) |
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| 99 | { |
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| 100 | $parent = $this->pdoDriver; |
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| 101 | $ok = $parent->Execute(sprintf($this->_genSeqSQL,$seqname)); |
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| 102 | if (!$ok) return false; |
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| 103 | $start -= 1; |
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| 104 | return $parent->Execute("insert into $seqname values($start)"); |
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| 105 | } |
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| 106 | |
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| 107 | function SetTransactionMode($transaction_mode) |
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| 108 | { |
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| 109 | $parent = $this->pdoDriver; |
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| 110 | $parent->_transmode = strtoupper($transaction_mode); |
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| 111 | } |
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| 112 | |
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| 113 | function BeginTrans() |
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| 114 | { |
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| 115 | $parent = $this->pdoDriver; |
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| 116 | if ($parent->transOff) return true; |
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| 117 | $parent->transCnt += 1; |
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| 118 | $parent->_autocommit = false; |
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| 119 | return $parent->Execute("BEGIN {$parent->_transmode}"); |
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| 120 | } |
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| 121 | |
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| 122 | function CommitTrans($ok=true) |
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| 123 | { |
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| 124 | $parent = $this->pdoDriver; |
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| 125 | if ($parent->transOff) return true; |
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| 126 | if (!$ok) return $parent->RollbackTrans(); |
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| 127 | if ($parent->transCnt) $parent->transCnt -= 1; |
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| 128 | $parent->_autocommit = true; |
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| 129 | |
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| 130 | $ret = $parent->Execute('COMMIT'); |
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| 131 | return $ret; |
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| 132 | } |
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| 133 | |
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| 134 | function RollbackTrans() |
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| 135 | { |
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| 136 | $parent = $this->pdoDriver; |
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| 137 | if ($parent->transOff) return true; |
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| 138 | if ($parent->transCnt) $parent->transCnt -= 1; |
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| 139 | $parent->_autocommit = true; |
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| 140 | |
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| 141 | $ret = $parent->Execute('ROLLBACK'); |
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| 142 | return $ret; |
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| 143 | } |
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| 144 | |
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| 145 | |
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| 146 | // mark newnham |
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| 147 | function MetaColumns($tab,$normalize=true) |
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| 148 | { |
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| 149 | global $ADODB_FETCH_MODE; |
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| 150 | |
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| 151 | $parent = $this->pdoDriver; |
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| 152 | $false = false; |
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| 153 | $save = $ADODB_FETCH_MODE; |
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| 154 | $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC; |
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| 155 | if ($parent->fetchMode !== false) $savem = $parent->SetFetchMode(false); |
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| 156 | $rs = $parent->Execute("PRAGMA table_info('$tab')"); |
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| 157 | if (isset($savem)) $parent->SetFetchMode($savem); |
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| 158 | if (!$rs) { |
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| 159 | $ADODB_FETCH_MODE = $save; |
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| 160 | return $false; |
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| 161 | } |
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| 162 | $arr = array(); |
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| 163 | while ($r = $rs->FetchRow()) { |
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| 164 | $type = explode('(',$r['type']); |
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| 165 | $size = ''; |
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| 166 | if (sizeof($type)==2) |
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| 167 | $size = trim($type[1],')'); |
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| 168 | $fn = strtoupper($r['name']); |
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| 169 | $fld = new ADOFieldObject; |
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| 170 | $fld->name = $r['name']; |
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| 171 | $fld->type = $type[0]; |
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| 172 | $fld->max_length = $size; |
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| 173 | $fld->not_null = $r['notnull']; |
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| 174 | $fld->primary_key = $r['pk']; |
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| 175 | $fld->default_value = $r['dflt_value']; |
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| 176 | $fld->scale = 0; |
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| 177 | if ($save == ADODB_FETCH_NUM) $arr[] = $fld; |
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| 178 | else $arr[strtoupper($fld->name)] = $fld; |
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| 179 | } |
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| 180 | $rs->Close(); |
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| 181 | $ADODB_FETCH_MODE = $save; |
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| 182 | return $arr; |
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| 183 | } |
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| 184 | |
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| 185 | function MetaTables($ttype=false,$showSchema=false,$mask=false) |
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| 186 | { |
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| 187 | $parent = $this->pdoDriver; |
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| 188 | |
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| 189 | if ($mask) { |
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| 190 | $save = $this->metaTablesSQL; |
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| 191 | $mask = $this->qstr(strtoupper($mask)); |
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| 192 | $this->metaTablesSQL .= " AND name LIKE $mask"; |
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| 193 | } |
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| 194 | |
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| 195 | $ret = $parent->GetCol($this->metaTablesSQL); |
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| 196 | |
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| 197 | if ($mask) { |
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| 198 | $this->metaTablesSQL = $save; |
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| 199 | } |
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| 200 | return $ret; |
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| 201 | } |
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| 202 | } |
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| 203 | ?> |
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