lib/adodb/datadict/datadict-oci8.inc.php

   1 <?php
   2
   3 /**
   4   V4.94 23 Jan 2007  (c) 2000-2007 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
   9   Set tabs to 4 for best viewing.
  10
  11 */
  12
  13 // security - hide paths
  14 if (!defined('ADODB_DIR')) die();
  15
  16 class ADODB2_oci8 extends ADODB_DataDict {
  17
  18         var $databaseType = 'oci8';
  19         var $seqField = false;
  20         var $seqPrefix = 'SEQ_';
  21         var $dropTable = "DROP TABLE %s CASCADE CONSTRAINTS";
  22         var $trigPrefix = 'TRIG_';
  23         var $alterCol = ' MODIFY ';
  24         var $typeX = 'VARCHAR(4000)';
  25         var $typeXL = 'CLOB';
  26
  27         function MetaType($t,$len=-1)
  28         {
  29                 if (is_object($t)) {
  30                         $fieldobj = $t;
  31                         $t = $fieldobj->type;
  32                         $len = $fieldobj->max_length;
  33                 }
  34                 switch (strtoupper($t)) {
  35                 case 'VARCHAR':
  36                 case 'VARCHAR2':
  37                 case 'CHAR':
  38                 case 'VARBINARY':
  39                 case 'BINARY':
  40                         if (isset($this) && $len <= $this->blobSize) return 'C';
  41                         return 'X';
  42
  43                 case 'NCHAR':
  44                 case 'NVARCHAR2':
  45                 case 'NVARCHAR':
  46                         if (isset($this) && $len <= $this->blobSize) return 'C2';
  47                         return 'X2';
  48
  49                 case 'NCLOB':
  50                 case 'CLOB':
  51                         return 'XL';
  52
  53                 case 'LONG RAW':
  54                 case 'LONG VARBINARY':
  55                 case 'BLOB':
  56                         return 'B';
  57
  58                 case 'DATE':
  59                         return 'T';
  60
  61                 case 'INT':
  62                 case 'SMALLINT':
  63                 case 'INTEGER':
  64                         return 'I';
  65
  66                 default:
  67                         return 'N';
  68                 }
  69         }
  70
  71         function ActualType($meta)
  72         {
  73                 switch($meta) {
  74                 case 'C': return 'VARCHAR';
  75                 case 'X': return $this->typeX;
  76                 case 'XL': return $this->typeXL;
  77
  78                 case 'C2': return 'NVARCHAR2';
  79                 case 'X2': return 'NVARCHAR2(4000)';
  80
  81                 case 'B': return 'BLOB';
  82
  83                 case 'D':
  84                 case 'T': return 'DATE';
  85                 case 'L': return 'DECIMAL(1)';
  86                 case 'I1': return 'DECIMAL(3)';
  87                 case 'I2': return 'DECIMAL(5)';
  88                 case 'I':
  89                 case 'I4': return 'DECIMAL(10)';
  90
  91                 case 'I8': return 'DECIMAL(20)';
  92                 case 'F': return 'DECIMAL';
  93                 case 'N': return 'DECIMAL';
  94                 default:
  95                         return $meta;
  96                 }
  97         }
  98
  99         function CreateDatabase($dbname, $options=false)
 100         {
 101                 $options = $this->_Options($options);
 102                 $password = isset($options['PASSWORD']) ? $options['PASSWORD'] : 'tiger';
 103                 $tablespace = isset($options["TABLESPACE"]) ? " DEFAULT TABLESPACE ".$options["TABLESPACE"] : '';
 104                 $sql[] = "CREATE USER ".$dbname." IDENTIFIED BY ".$password.$tablespace;
 105                 $sql[] = "GRANT CREATE SESSION, CREATE TABLE,UNLIMITED TABLESPACE,CREATE SEQUENCE TO $dbname";
 106
 107                 return $sql;
 108         }
 109
 110         function AddColumnSQL($tabname, $flds)
 111         {
 112                 $f = array();
 113                 list($lines,$pkey) = $this->_GenFields($flds);
 114                 $s = "ALTER TABLE $tabname ADD (";
 115                 foreach($lines as $v) {
 116                         $f[] = "\n $v";
 117                 }
 118
 119                 $s .= implode(', ',$f).')';
 120                 $sql[] = $s;
 121                 return $sql;
 122         }
 123
 124         function AlterColumnSQL($tabname, $flds)
 125         {
 126                 $f = array();
 127                 list($lines,$pkey) = $this->_GenFields($flds);
 128                 $s = "ALTER TABLE $tabname MODIFY(";
 129                 foreach($lines as $v) {
 130                         $f[] = "\n $v";
 131                 }
 132                 $s .= implode(', ',$f).')';
 133                 $sql[] = $s;
 134                 return $sql;
 135         }
 136
 137         function DropColumnSQL($tabname, $flds)
 138         {
 139                 if (!is_array($flds)) $flds = explode(',',$flds);
 140                 foreach ($flds as $k => $v) $flds[$k] = $this->NameQuote($v);
 141
 142                 $sql = array();
 143                 $s = "ALTER TABLE $tabname DROP(";
 144                 $s .= implode(', ',$flds).') CASCADE CONSTRAINTS';
 145                 $sql[] = $s;
 146                 return $sql;
 147         }
 148
 149         function _DropAutoIncrement($t)
 150         {
 151                 if (strpos($t,'.') !== false) {
 152                         $tarr = explode('.',$t);
 153                         return "drop sequence ".$tarr[0].".seq_".$tarr[1];
 154                 }
 155                 return "drop sequence seq_".$t;
 156         }
 157
 158         // return string must begin with space
 159         function _CreateSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
 160         {
 161                 $suffix = '';
 162
 163                 if ($fdefault == "''" && $fnotnull) {// this is null in oracle
 164                         $fnotnull = false;
 165                         if ($this->debug) ADOConnection::outp("NOT NULL and DEFAULT='' illegal in Oracle");
 166                 }
 167
 168                 if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
 169                 if ($fnotnull) $suffix .= ' NOT NULL';
 170
 171                 if ($fautoinc) $this->seqField = $fname;
 172                 if ($fconstraint) $suffix .= ' '.$fconstraint;
 173
 174                 return $suffix;
 175         }
 176
 177 /*
 178 CREATE or replace TRIGGER jaddress_insert
 179 before insert on jaddress
 180 for each row
 181 begin
 182 select seqaddress.nextval into :new.A_ID from dual;
 183 end;
 184 */
 185         function _Triggers($tabname,$tableoptions)
 186         {
 187                 if (!$this->seqField) return array();
 188
 189                 if ($this->schema) {
 190                         $t = strpos($tabname,'.');
 191                         if ($t !== false) $tab = substr($tabname,$t+1);
 192                         else $tab = $tabname;
 193                         $seqname = $this->schema.'.'.$this->seqPrefix.$tab;
 194                         $trigname = $this->schema.'.'.$this->trigPrefix.$this->seqPrefix.$tab;
 195                 } else {
 196                         $seqname = $this->seqPrefix.$tabname;
 197                         $trigname = $this->trigPrefix.$seqname;
 198                 }
 199
 200                 if (strlen($seqname) > 30) {
 201                         $seqname = $this->seqPrefix.uniqid('');
 202                 } // end if
 203                 if (strlen($trigname) > 30) {
 204                         $trigname = $this->trigPrefix.uniqid('');
 205                 } // end if
 206
 207                 if (isset($tableoptions['REPLACE'])) $sql[] = "DROP SEQUENCE $seqname";
 208                 $seqCache = '';
 209                 if (isset($tableoptions['SEQUENCE_CACHE'])){$seqCache = $tableoptions['SEQUENCE_CACHE'];}
 210                 $seqIncr = '';
 211                 if (isset($tableoptions['SEQUENCE_INCREMENT'])){$seqIncr = ' INCREMENT BY '.$tableoptions['SEQUENCE_INCREMENT'];}
 212                 $seqStart = '';
 213                 if (isset($tableoptions['SEQUENCE_START'])){$seqIncr = ' START WITH '.$tableoptions['SEQUENCE_START'];}
 214                 $sql[] = "CREATE SEQUENCE $seqname $seqStart $seqIncr $seqCache";
 215                 $sql[] = "CREATE OR REPLACE TRIGGER $trigname BEFORE insert ON $tabname FOR EACH ROW WHEN (NEW.$this->seqField IS NULL OR NEW.$this->seqField = 0) BEGIN select $seqname.nextval into :new.$this->seqField from dual; END;";
 216
 217                 $this->seqField = false;
 218                 return $sql;
 219         }
 220
 221         /*
 222         CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name [(create_definition,...)]
 223                 [table_options] [select_statement]
 224                 create_definition:
 225                 col_name type [NOT NULL | NULL] [DEFAULT default_value] [AUTO_INCREMENT]
 226                 [PRIMARY KEY] [reference_definition]
 227                 or PRIMARY KEY (index_col_name,...)
 228                 or KEY [index_name] (index_col_name,...)
 229                 or INDEX [index_name] (index_col_name,...)
 230                 or UNIQUE [INDEX] [index_name] (index_col_name,...)
 231                 or FULLTEXT [INDEX] [index_name] (index_col_name,...)
 232                 or [CONSTRAINT symbol] FOREIGN KEY [index_name] (index_col_name,...)
 233                 [reference_definition]
 234                 or CHECK (expr)
 235         */
 236
 237
 238
 239         function _IndexSQL($idxname, $tabname, $flds,$idxoptions)
 240         {
 241                 $sql = array();
 242
 243                 if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) {
 244                         $sql[] = sprintf ($this->dropIndex, $idxname, $tabname);
 245                         if ( isset($idxoptions['DROP']) )
 246                                 return $sql;
 247                 }
 248
 249                 if ( empty ($flds) ) {
 250                         return $sql;
 251                 }
 252
 253                 if (isset($idxoptions['BITMAP'])) {
 254                         $unique = ' BITMAP';
 255                 } elseif (isset($idxoptions['UNIQUE'])) {
 256                         $unique = ' UNIQUE';
 257                 } else {
 258                         $unique = '';
 259                 }
 260
 261                 if ( is_array($flds) )
 262                         $flds = implode(', ',$flds);
 263                 $s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname . ' (' . $flds . ')';
 264
 265                 if ( isset($idxoptions[$this->upperName]) )
 266                         $s .= $idxoptions[$this->upperName];
 267
 268                 if (isset($idxoptions['oci8']))
 269                         $s .= $idxoptions['oci8'];
 270
 271
 272                 $sql[] = $s;
 273
 274                 return $sql;
 275         }
 276
 277         function GetCommentSQL($table,$col)
 278         {
 279                 $table = $this->connection->qstr($table);
 280                 $col = $this->connection->qstr($col);
 281                 return "select comments from USER_COL_COMMENTS where TABLE_NAME=$table and COLUMN_NAME=$col";
 282         }
 283
 284         function SetCommentSQL($table,$col,$cmt)
 285         {
 286                 $cmt = $this->connection->qstr($cmt);
 287                 return  "COMMENT ON COLUMN $table.$col IS $cmt";
 288         }
 289 }
 290 ?>