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Differences Between: [Versions 310 and 400] [Versions 311 and 400] [Versions 39 and 400] [Versions 400 and 401] [Versions 400 and 402] [Versions 400 and 403]

   1  <?php
   2  /**
   3   * PDO PostgreSQL (pgsql) driver
   4   *
   5   * This file is part of ADOdb, a Database Abstraction Layer library for PHP.
   6   *
   7   * @package ADOdb
   8   * @link https://adodb.org Project's web site and documentation
   9   * @link https://github.com/ADOdb/ADOdb Source code and issue tracker
  10   *
  11   * The ADOdb Library is dual-licensed, released under both the BSD 3-Clause
  12   * and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,
  13   * any later version. This means you can use it in proprietary products.
  14   * See the LICENSE.md file distributed with this source code for details.
  15   * @license BSD-3-Clause
  16   * @license LGPL-2.1-or-later
  17   *
  18   * @copyright 2000-2013 John Lim
  19   * @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
  20   */
  21  
  22  class ADODB_pdo_pgsql extends ADODB_pdo {
  23  	 var $metaDatabasesSQL = "select datname from pg_database where datname not in ('template0','template1') order by 1";
  24      var $metaTablesSQL = "select tablename,'T' from pg_tables where tablename not like 'pg\_%'
  25  	 and tablename not in ('sql_features', 'sql_implementation_info', 'sql_languages',
  26  	  'sql_packages', 'sql_sizing', 'sql_sizing_profiles')
  27  	 union
  28          select viewname,'V' from pg_views where viewname not like 'pg\_%'";
  29  	 //"select tablename from pg_tables where tablename not like 'pg_%' order by 1";
  30  	 var $isoDates = true; // accepts dates in ISO format
  31  	 var $sysDate = "CURRENT_DATE";
  32  	 var $sysTimeStamp = "CURRENT_TIMESTAMP";
  33  	 var $blobEncodeType = 'C';
  34  	 var $metaColumnsSQL = "SELECT a.attname,t.typname,a.attlen,a.atttypmod,a.attnotnull,a.atthasdef,a.attnum
  35  	 	 FROM pg_class c, pg_attribute a,pg_type t
  36  	 	 WHERE relkind in ('r','v') AND (c.relname='%s' or c.relname = lower('%s')) and a.attname not like '....%%'
  37  AND a.attnum > 0 AND a.atttypid = t.oid AND a.attrelid = c.oid ORDER BY a.attnum";
  38  
  39  	 // used when schema defined
  40  	 var $metaColumnsSQL1 = "SELECT a.attname, t.typname, a.attlen, a.atttypmod, a.attnotnull, a.atthasdef, a.attnum
  41  FROM pg_class c, pg_attribute a, pg_type t, pg_namespace n
  42  WHERE relkind in ('r','v') AND (c.relname='%s' or c.relname = lower('%s'))
  43   and c.relnamespace=n.oid and n.nspname='%s'
  44  	 and a.attname not like '....%%' AND a.attnum > 0
  45  	 AND a.atttypid = t.oid AND a.attrelid = c.oid ORDER BY a.attnum";
  46  
  47  	 // get primary key etc -- from Freek Dijkstra
  48  	 var $metaKeySQL = "SELECT ic.relname AS index_name, a.attname AS column_name,i.indisunique AS unique_key, i.indisprimary AS primary_key
  49  	 FROM pg_class bc, pg_class ic, pg_index i, pg_attribute a WHERE bc.oid = i.indrelid AND ic.oid = i.indexrelid AND (i.indkey[0] = a.attnum OR i.indkey[1] = a.attnum OR i.indkey[2] = a.attnum OR i.indkey[3] = a.attnum OR i.indkey[4] = a.attnum OR i.indkey[5] = a.attnum OR i.indkey[6] = a.attnum OR i.indkey[7] = a.attnum) AND a.attrelid = bc.oid AND bc.relname = '%s'";
  50  
  51  	 var $hasAffectedRows = true;
  52  	 var $hasLimit = false;	 // set to true for pgsql 7 only. support pgsql/mysql SELECT * FROM TABLE LIMIT 10
  53  	 // below suggested by Freek Dijkstra
  54  	 var $true = 't';	 	 // string that represents TRUE for a database
  55  	 var $false = 'f';	 	 // string that represents FALSE for a database
  56  	 var $fmtDate = "'Y-m-d'";	 // used by DBDate() as the default date format used by the database
  57  	 var $fmtTimeStamp = "'Y-m-d G:i:s'"; // used by DBTimeStamp as the default timestamp fmt.
  58  	 var $hasMoveFirst = true;
  59  	 var $hasGenID = true;
  60  	 var $_genIDSQL = "SELECT NEXTVAL('%s')";
  61  	 var $_genSeqSQL = "CREATE SEQUENCE %s START %s";
  62  	 var $_dropSeqSQL = "DROP SEQUENCE %s";
  63  	 var $metaDefaultsSQL = "SELECT d.adnum as num, d.adsrc as def from pg_attrdef d, pg_class c where d.adrelid=c.oid and c.relname='%s' order by d.adnum";
  64  	 var $random = 'random()';	 	 /// random function
  65  	 var $concat_operator='||';
  66  
  67  	function _init($parentDriver)
  68  	 {
  69  
  70  	 	 $parentDriver->hasTransactions = false; ## <<< BUG IN PDO pgsql driver
  71  	 	 $parentDriver->hasInsertID = true;
  72  	 	 $parentDriver->_nestedSQL = true;
  73  	 }
  74  
  75  	function ServerInfo()
  76  	 {
  77  	 	 $arr['description'] = ADOConnection::GetOne("select version()");
  78  	 	 $arr['version'] = ADOConnection::_findvers($arr['description']);
  79  	 	 return $arr;
  80  	 }
  81  
  82  	function SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs2cache=0)
  83  	 {
  84  	 	 $nrows = (int) $nrows;
  85  	 	 $offset = (int) $offset;
  86  	 	 $offsetStr = ($offset >= 0) ? " OFFSET $offset" : '';
  87  	 	 $limitStr  = ($nrows >= 0)  ? " LIMIT $nrows" : '';
  88  	 	 if ($secs2cache)
  89  	 	 	 $rs = $this->CacheExecute($secs2cache,$sql."$limitStr$offsetStr",$inputarr);
  90  	 	 else
  91  	 	 	 $rs = $this->Execute($sql."$limitStr$offsetStr",$inputarr);
  92  
  93  	 	 return $rs;
  94  	 }
  95  
  96  	function MetaTables($ttype=false,$showSchema=false,$mask=false)
  97  	 {
  98  	 	 $info = $this->ServerInfo();
  99  	 	 if ($info['version'] >= 7.3) {
 100  	     	 $this->metaTablesSQL = "select tablename,'T' from pg_tables where tablename not like 'pg\_%'
 101  	 	 	   and schemaname  not in ( 'pg_catalog','information_schema')
 102  	 union
 103          select viewname,'V' from pg_views where viewname not like 'pg\_%'  and schemaname  not in ( 'pg_catalog','information_schema') ";
 104  	 	 }
 105  	 	 if ($mask) {
 106  	 	 	 $save = $this->metaTablesSQL;
 107  	 	 	 $mask = $this->qstr(strtolower($mask));
 108  	 	 	 if ($info['version']>=7.3)
 109  	 	 	 	 $this->metaTablesSQL = "
 110  select tablename,'T' from pg_tables where tablename like $mask and schemaname not in ( 'pg_catalog','information_schema')
 111   union
 112  select viewname,'V' from pg_views where viewname like $mask and schemaname  not in ( 'pg_catalog','information_schema')  ";
 113  	 	 	 else
 114  	 	 	 	 $this->metaTablesSQL = "
 115  select tablename,'T' from pg_tables where tablename like $mask
 116   union
 117  select viewname,'V' from pg_views where viewname like $mask";
 118  	 	 }
 119  	 	 $ret = ADOConnection::MetaTables($ttype,$showSchema);
 120  
 121  	 	 if ($mask) {
 122  	 	 	 $this->metaTablesSQL = $save;
 123  	 	 }
 124  	 	 return $ret;
 125  	 }
 126  
 127  	function MetaColumns($table,$normalize=true)
 128  	 {
 129  	 global $ADODB_FETCH_MODE;
 130  
 131  	 	 $schema = false;
 132  	 	 $this->_findschema($table,$schema);
 133  
 134  	 	 if ($normalize) $table = strtolower($table);
 135  
 136  	 	 $save = $ADODB_FETCH_MODE;
 137  	 	 $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
 138  	 	 if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
 139  
 140  	 	 if ($schema) $rs = $this->Execute(sprintf($this->metaColumnsSQL1,$table,$table,$schema));
 141  	 	 else $rs = $this->Execute(sprintf($this->metaColumnsSQL,$table,$table));
 142  	 	 if (isset($savem)) $this->SetFetchMode($savem);
 143  	 	 $ADODB_FETCH_MODE = $save;
 144  
 145  	 	 if ($rs === false) {
 146  	 	 	 $false = false;
 147  	 	 	 return $false;
 148  	 	 }
 149  	 	 if (!empty($this->metaKeySQL)) {
 150  	 	 	 // If we want the primary keys, we have to issue a separate query
 151  	 	 	 // Of course, a modified version of the metaColumnsSQL query using a
 152  	 	 	 // LEFT JOIN would have been much more elegant, but postgres does
 153  	 	 	 // not support OUTER JOINS. So here is the clumsy way.
 154  
 155  	 	 	 $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
 156  
 157  	 	 	 $rskey = $this->Execute(sprintf($this->metaKeySQL,($table)));
 158  	 	 	 // fetch all result in once for performance.
 159  	 	 	 $keys = $rskey->GetArray();
 160  	 	 	 if (isset($savem)) $this->SetFetchMode($savem);
 161  	 	 	 $ADODB_FETCH_MODE = $save;
 162  
 163  	 	 	 $rskey->Close();
 164  	 	 	 unset($rskey);
 165  	 	 }
 166  
 167  	 	 $rsdefa = array();
 168  	 	 if (!empty($this->metaDefaultsSQL)) {
 169  	 	 	 $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
 170  	 	 	 $sql = sprintf($this->metaDefaultsSQL, ($table));
 171  	 	 	 $rsdef = $this->Execute($sql);
 172  	 	 	 if (isset($savem)) $this->SetFetchMode($savem);
 173  	 	 	 $ADODB_FETCH_MODE = $save;
 174  
 175  	 	 	 if ($rsdef) {
 176  	 	 	 	 while (!$rsdef->EOF) {
 177  	 	 	 	 	 $num = $rsdef->fields['num'];
 178  	 	 	 	 	 $s = $rsdef->fields['def'];
 179  	 	 	 	 	 if (strpos($s,'::')===false && substr($s, 0, 1) == "'") { /* quoted strings hack... for now... fixme */
 180  	 	 	 	 	 	 $s = substr($s, 1);
 181  	 	 	 	 	 	 $s = substr($s, 0, strlen($s) - 1);
 182  	 	 	 	 	 }
 183  
 184  	 	 	 	 	 $rsdefa[$num] = $s;
 185  	 	 	 	 	 $rsdef->MoveNext();
 186  	 	 	 	 }
 187  	 	 	 } else {
 188  	 	 	 	 ADOConnection::outp( "==> SQL => " . $sql);
 189  	 	 	 }
 190  	 	 	 unset($rsdef);
 191  	 	 }
 192  
 193  	 	 $retarr = array();
 194  	 	 while (!$rs->EOF) {
 195  	 	 	 $fld = new ADOFieldObject();
 196  	 	 	 $fld->name = $rs->fields[0];
 197  	 	 	 $fld->type = $rs->fields[1];
 198  	 	 	 $fld->max_length = $rs->fields[2];
 199  	 	 	 if ($fld->max_length <= 0) $fld->max_length = $rs->fields[3]-4;
 200  	 	 	 if ($fld->max_length <= 0) $fld->max_length = -1;
 201  	 	 	 if ($fld->type == 'numeric') {
 202  	 	 	 	 $fld->scale = $fld->max_length & 0xFFFF;
 203  	 	 	 	 $fld->max_length >>= 16;
 204  	 	 	 }
 205  	 	 	 // dannym
 206  	 	 	 // 5 hasdefault; 6 num-of-column
 207  	 	 	 $fld->has_default = ($rs->fields[5] == 't');
 208  	 	 	 if ($fld->has_default) {
 209  	 	 	 	 $fld->default_value = $rsdefa[$rs->fields[6]];
 210  	 	 	 }
 211  
 212  	 	 	 //Freek
 213  	 	 	 if ($rs->fields[4] == $this->true) {
 214  	 	 	 	 $fld->not_null = true;
 215  	 	 	 }
 216  
 217  	 	 	 // Freek
 218  	 	 	 if (is_array($keys)) {
 219  	 	 	 	 foreach($keys as $key) {
 220  	 	 	 	 	 if ($fld->name == $key['column_name'] AND $key['primary_key'] == $this->true)
 221  	 	 	 	 	 	 $fld->primary_key = true;
 222  	 	 	 	 	 if ($fld->name == $key['column_name'] AND $key['unique_key'] == $this->true)
 223  	 	 	 	 	 	 $fld->unique = true; // What name is more compatible?
 224  	 	 	 	 }
 225  	 	 	 }
 226  
 227  	 	 	 if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM) $retarr[] = $fld;
 228  	 	 	 else $retarr[($normalize) ? strtoupper($fld->name) : $fld->name] = $fld;
 229  
 230  	 	 	 $rs->MoveNext();
 231  	 	 }
 232  	 	 $rs->Close();
 233  	 	 if (empty($retarr)) {
 234  	 	 	 $false = false;
 235  	 	 	 return $false;
 236  	 	 } else return $retarr;
 237  
 238  	 }
 239  
 240  	function BeginTrans()
 241  	 {
 242  	 	 if (!$this->hasTransactions) {
 243  	 	 	 return false;
 244  	 	 }
 245  	 	 if ($this->transOff) {
 246  	 	 	 return true;
 247  	 	 }
 248  	 	 $this->transCnt += 1;
 249  
 250  	 	 return $this->_connectionID->beginTransaction();
 251  	 }
 252  
 253  	function CommitTrans($ok = true)
 254  	 {
 255  	 	 if (!$this->hasTransactions) {
 256  	 	 	 return false;
 257  	 	 }
 258  	 	 if ($this->transOff) {
 259  	 	 	 return true;
 260  	 	 }
 261  	 	 if (!$ok) {
 262  	 	 	 return $this->RollbackTrans();
 263  	 	 }
 264  	 	 if ($this->transCnt) {
 265  	 	 	 $this->transCnt -= 1;
 266  	 	 }
 267  	 	 $this->_autocommit = true;
 268  
 269  	 	 $ret = $this->_connectionID->commit();
 270  	 	 return $ret;
 271  	 }
 272  
 273  	function RollbackTrans()
 274  	 {
 275  	 	 if (!$this->hasTransactions) {
 276  	 	 	 return false;
 277  	 	 }
 278  	 	 if ($this->transOff) {
 279  	 	 	 return true;
 280  	 	 }
 281  	 	 if ($this->transCnt) {
 282  	 	 	 $this->transCnt -= 1;
 283  	 	 }
 284  	 	 $this->_autocommit = true;
 285  
 286  	 	 $ret = $this->_connectionID->rollback();
 287  	 	 return $ret;
 288  	 }
 289  
 290  	function SetTransactionMode( $transaction_mode )
 291  	 {
 292  	 	 $this->_transmode  = $transaction_mode;
 293  	 	 if (empty($transaction_mode)) {
 294  	 	 	 $this->_connectionID->query('SET TRANSACTION ISOLATION LEVEL READ COMMITTED');
 295  	 	 	 return;
 296  	 	 }
 297  	 	 if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
 298  	 	 $this->_connectionID->query("SET TRANSACTION ".$transaction_mode);
 299  	 }
 300  }