1<?php 2 3/* 4V4.66 28 Sept 2005 (c) 2000-2005 John Lim (jlim@natsoft.com.my). All rights reserved. 5 Released under both BSD license and Lesser GPL library license. 6 Whenever there is any discrepancy between the two licenses, 7 the BSD license will take precedence. 8 Set tabs to 8. 9 10*/ 11 12class ADODB_pdo_pgsql extends ADODB_pdo { 13var $metaDatabasesSQL = "select datname from pg_database where datname not in ('template0','template1') order by 1"; 14 var $metaTablesSQL = "select tablename,'T' from pg_tables where tablename not like 'pg\_%' 15 and tablename not in ('sql_features', 'sql_implementation_info', 'sql_languages', 16 'sql_packages', 'sql_sizing', 'sql_sizing_profiles') 17 union 18 select viewname,'V' from pg_views where viewname not like 'pg\_%'"; 19 //"select tablename from pg_tables where tablename not like 'pg_%' order by 1"; 20 var $isoDates = true; // accepts dates in ISO format 21 var $sysDate = "CURRENT_DATE"; 22 var $sysTimeStamp = "CURRENT_TIMESTAMP"; 23 var $blobEncodeType = 'C'; 24 var $metaColumnsSQL = "SELECT a.attname,t.typname,a.attlen,a.atttypmod,a.attnotnull,a.atthasdef,a.attnum 25 FROM pg_class c, pg_attribute a,pg_type t 26 WHERE relkind in ('r','v') AND (c.relname='%s' or c.relname = lower('%s')) and a.attname not like '....%%' 27AND a.attnum > 0 AND a.atttypid = t.oid AND a.attrelid = c.oid ORDER BY a.attnum"; 28 29 // used when schema defined 30 var $metaColumnsSQL1 = "SELECT a.attname, t.typname, a.attlen, a.atttypmod, a.attnotnull, a.atthasdef, a.attnum 31FROM pg_class c, pg_attribute a, pg_type t, pg_namespace n 32WHERE relkind in ('r','v') AND (c.relname='%s' or c.relname = lower('%s')) 33 and c.relnamespace=n.oid and n.nspname='%s' 34 and a.attname not like '....%%' AND a.attnum > 0 35 AND a.atttypid = t.oid AND a.attrelid = c.oid ORDER BY a.attnum"; 36 37 // get primary key etc -- from Freek Dijkstra 38 var $metaKeySQL = "SELECT ic.relname AS index_name, a.attname AS column_name,i.indisunique AS unique_key, i.indisprimary AS primary_key 39 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'"; 40 41 var $hasAffectedRows = true; 42 var $hasLimit = false; // set to true for pgsql 7 only. support pgsql/mysql SELECT * FROM TABLE LIMIT 10 43 // below suggested by Freek Dijkstra 44 var $true = 't'; // string that represents TRUE for a database 45 var $false = 'f'; // string that represents FALSE for a database 46 var $fmtDate = "'Y-m-d'"; // used by DBDate() as the default date format used by the database 47 var $fmtTimeStamp = "'Y-m-d G:i:s'"; // used by DBTimeStamp as the default timestamp fmt. 48 var $hasMoveFirst = true; 49 var $hasGenID = true; 50 var $_genIDSQL = "SELECT NEXTVAL('%s')"; 51 var $_genSeqSQL = "CREATE SEQUENCE %s START %s"; 52 var $_dropSeqSQL = "DROP SEQUENCE %s"; 53 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"; 54 var $random = 'random()'; /// random function 55 var $concat_operator='||'; 56 57 function _init($parentDriver) 58 { 59 60 $parentDriver->hasTransactions = false; 61 $parentDriver->hasInsertID = true; 62 } 63 64 function ServerInfo() 65 { 66 $arr['description'] = ADOConnection::GetOne("select version()"); 67 $arr['version'] = ADOConnection::_findvers($arr['description']); 68 return $arr; 69 } 70 71 function &SelectLimit($sql,$nrows=-1,$offset=-1,$inputarr=false,$secs2cache=0) 72 { 73 $offsetStr = ($offset >= 0) ? " OFFSET $offset" : ''; 74 $limitStr = ($nrows >= 0) ? " LIMIT $nrows" : ''; 75 if ($secs2cache) 76 $rs =& $this->CacheExecute($secs2cache,$sql."$limitStr$offsetStr",$inputarr); 77 else 78 $rs =& $this->Execute($sql."$limitStr$offsetStr",$inputarr); 79 80 return $rs; 81 } 82 83 function &MetaTables($ttype=false,$showSchema=false,$mask=false) 84 { 85 $info = $this->ServerInfo(); 86 if ($info['version'] >= 7.3) { 87 $this->metaTablesSQL = "select tablename,'T' from pg_tables where tablename not like 'pg\_%' 88 and schemaname not in ( 'pg_catalog','information_schema') 89 union 90 select viewname,'V' from pg_views where viewname not like 'pg\_%' and schemaname not in ( 'pg_catalog','information_schema') "; 91 } 92 if ($mask) { 93 $save = $this->metaTablesSQL; 94 $mask = $this->qstr(strtolower($mask)); 95 if ($info['version']>=7.3) 96 $this->metaTablesSQL = " 97select tablename,'T' from pg_tables where tablename like $mask and schemaname not in ( 'pg_catalog','information_schema') 98 union 99select viewname,'V' from pg_views where viewname like $mask and schemaname not in ( 'pg_catalog','information_schema') "; 100 else 101 $this->metaTablesSQL = " 102select tablename,'T' from pg_tables where tablename like $mask 103 union 104select viewname,'V' from pg_views where viewname like $mask"; 105 } 106 $ret =& ADOConnection::MetaTables($ttype,$showSchema); 107 108 if ($mask) { 109 $this->metaTablesSQL = $save; 110 } 111 return $ret; 112 } 113 114 function &MetaColumns($table,$normalize=true) 115 { 116 global $ADODB_FETCH_MODE; 117 118 $schema = false; 119 $this->_findschema($table,$schema); 120 121 if ($normalize) $table = strtolower($table); 122 123 $save = $ADODB_FETCH_MODE; 124 $ADODB_FETCH_MODE = ADODB_FETCH_NUM; 125 if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false); 126 127 if ($schema) $rs =& $this->Execute(sprintf($this->metaColumnsSQL1,$table,$table,$schema)); 128 else $rs =& $this->Execute(sprintf($this->metaColumnsSQL,$table,$table)); 129 if (isset($savem)) $this->SetFetchMode($savem); 130 $ADODB_FETCH_MODE = $save; 131 132 if ($rs === false) { 133 $false = false; 134 return $false; 135 } 136 if (!empty($this->metaKeySQL)) { 137 // If we want the primary keys, we have to issue a separate query 138 // Of course, a modified version of the metaColumnsSQL query using a 139 // LEFT JOIN would have been much more elegant, but postgres does 140 // not support OUTER JOINS. So here is the clumsy way. 141 142 $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC; 143 144 $rskey = $this->Execute(sprintf($this->metaKeySQL,($table))); 145 // fetch all result in once for performance. 146 $keys =& $rskey->GetArray(); 147 if (isset($savem)) $this->SetFetchMode($savem); 148 $ADODB_FETCH_MODE = $save; 149 150 $rskey->Close(); 151 unset($rskey); 152 } 153 154 $rsdefa = array(); 155 if (!empty($this->metaDefaultsSQL)) { 156 $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC; 157 $sql = sprintf($this->metaDefaultsSQL, ($table)); 158 $rsdef = $this->Execute($sql); 159 if (isset($savem)) $this->SetFetchMode($savem); 160 $ADODB_FETCH_MODE = $save; 161 162 if ($rsdef) { 163 while (!$rsdef->EOF) { 164 $num = $rsdef->fields['num']; 165 $s = $rsdef->fields['def']; 166 if (strpos($s,'::')===false && substr($s, 0, 1) == "'") { /* quoted strings hack... for now... fixme */ 167 $s = substr($s, 1); 168 $s = substr($s, 0, strlen($s) - 1); 169 } 170 171 $rsdefa[$num] = $s; 172 $rsdef->MoveNext(); 173 } 174 } else { 175 ADOConnection::outp( "==> SQL => " . $sql); 176 } 177 unset($rsdef); 178 } 179 180 $retarr = array(); 181 while (!$rs->EOF) { 182 $fld = new ADOFieldObject(); 183 $fld->name = $rs->fields[0]; 184 $fld->type = $rs->fields[1]; 185 $fld->max_length = $rs->fields[2]; 186 if ($fld->max_length <= 0) $fld->max_length = $rs->fields[3]-4; 187 if ($fld->max_length <= 0) $fld->max_length = -1; 188 if ($fld->type == 'numeric') { 189 $fld->scale = $fld->max_length & 0xFFFF; 190 $fld->max_length >>= 16; 191 } 192 // dannym 193 // 5 hasdefault; 6 num-of-column 194 $fld->has_default = ($rs->fields[5] == 't'); 195 if ($fld->has_default) { 196 $fld->default_value = $rsdefa[$rs->fields[6]]; 197 } 198 199 //Freek 200 if ($rs->fields[4] == $this->true) { 201 $fld->not_null = true; 202 } 203 204 // Freek 205 if (is_array($keys)) { 206 foreach($keys as $key) { 207 if ($fld->name == $key['column_name'] AND $key['primary_key'] == $this->true) 208 $fld->primary_key = true; 209 if ($fld->name == $key['column_name'] AND $key['unique_key'] == $this->true) 210 $fld->unique = true; // What name is more compatible? 211 } 212 } 213 214 if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM) $retarr[] = $fld; 215 else $retarr[($normalize) ? strtoupper($fld->name) : $fld->name] = $fld; 216 217 $rs->MoveNext(); 218 } 219 $rs->Close(); 220 if (empty($retarr)) { 221 $false = false; 222 return $false; 223 } else return $retarr; 224 225 } 226 227} 228 229?> 230