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   1  <?php
   2  
   3  /**
   4    V5.19  23-Apr-2014  (c) 2000-2014 John Lim (jlim#natsoft.com). 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_mysql extends ADODB_DataDict {
  17      var $databaseType = 'mysql';
  18      var $alterCol = ' MODIFY COLUMN';
  19      var $alterTableAddIndex = true;
  20      var $dropTable = 'DROP TABLE IF EXISTS %s'; // requires mysql 3.22 or later
  21  
  22      var $dropIndex = 'DROP INDEX %s ON %s';
  23      var $renameColumn = 'ALTER TABLE %s CHANGE COLUMN %s %s %s';    // needs column-definition!
  24  
  25  	function MetaType($t,$len=-1,$fieldobj=false)
  26      {
  27          if (is_object($t)) {
  28              $fieldobj = $t;
  29              $t = $fieldobj->type;
  30              $len = $fieldobj->max_length;
  31          }
  32          $is_serial = is_object($fieldobj) && $fieldobj->primary_key && $fieldobj->auto_increment;
  33  
  34          $len = -1; // mysql max_length is not accurate
  35          switch (strtoupper($t)) {
  36          case 'STRING':
  37          case 'CHAR':
  38          case 'VARCHAR':
  39          case 'TINYBLOB':
  40          case 'TINYTEXT':
  41          case 'ENUM':
  42          case 'SET':
  43              if ($len <= $this->blobSize) return 'C';
  44  
  45          case 'TEXT':
  46          case 'LONGTEXT':
  47          case 'MEDIUMTEXT':
  48              return 'X';
  49  
  50          // php_mysql extension always returns 'blob' even if 'text'
  51          // so we have to check whether binary...
  52          case 'IMAGE':
  53          case 'LONGBLOB':
  54          case 'BLOB':
  55          case 'MEDIUMBLOB':
  56              return !empty($fieldobj->binary) ? 'B' : 'X';
  57  
  58          case 'YEAR':
  59          case 'DATE': return 'D';
  60  
  61          case 'TIME':
  62          case 'DATETIME':
  63          case 'TIMESTAMP': return 'T';
  64  
  65          case 'FLOAT':
  66          case 'DOUBLE':
  67              return 'F';
  68  
  69          case 'INT':
  70          case 'INTEGER': return $is_serial ? 'R' : 'I';
  71          case 'TINYINT': return $is_serial ? 'R' : 'I1';
  72          case 'SMALLINT': return $is_serial ? 'R' : 'I2';
  73          case 'MEDIUMINT': return $is_serial ? 'R' : 'I4';
  74          case 'BIGINT':  return $is_serial ? 'R' : 'I8';
  75          default: return 'N';
  76          }
  77      }
  78  
  79  	function ActualType($meta)
  80      {
  81          switch(strtoupper($meta)) {
  82          case 'C': return 'VARCHAR';
  83          case 'XL':return 'LONGTEXT';
  84          case 'X': return 'TEXT';
  85  
  86          case 'C2': return 'VARCHAR';
  87          case 'X2': return 'LONGTEXT';
  88  
  89          case 'B': return 'LONGBLOB';
  90  
  91          case 'D': return 'DATE';
  92          case 'TS':
  93          case 'T': return 'DATETIME';
  94          case 'L': return 'TINYINT';
  95  
  96          case 'R':
  97          case 'I4':
  98          case 'I': return 'INTEGER';
  99          case 'I1': return 'TINYINT';
 100          case 'I2': return 'SMALLINT';
 101          case 'I8': return 'BIGINT';
 102  
 103          case 'F': return 'DOUBLE';
 104          case 'N': return 'NUMERIC';
 105          default:
 106              return $meta;
 107          }
 108      }
 109  
 110      // return string must begin with space
 111  	function _CreateSuffix($fname,&$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
 112      {
 113          $suffix = '';
 114          if ($funsigned) $suffix .= ' UNSIGNED';
 115          if ($fnotnull) $suffix .= ' NOT NULL';
 116          if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
 117          if ($fautoinc) $suffix .= ' AUTO_INCREMENT';
 118          if ($fconstraint) $suffix .= ' '.$fconstraint;
 119          return $suffix;
 120      }
 121  
 122      /*
 123      CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name [(create_definition,...)]
 124          [table_options] [select_statement]
 125          create_definition:
 126          col_name type [NOT NULL | NULL] [DEFAULT default_value] [AUTO_INCREMENT]
 127          [PRIMARY KEY] [reference_definition]
 128          or PRIMARY KEY (index_col_name,...)
 129          or KEY [index_name] (index_col_name,...)
 130          or INDEX [index_name] (index_col_name,...)
 131          or UNIQUE [INDEX] [index_name] (index_col_name,...)
 132          or FULLTEXT [INDEX] [index_name] (index_col_name,...)
 133          or [CONSTRAINT symbol] FOREIGN KEY [index_name] (index_col_name,...)
 134          [reference_definition]
 135          or CHECK (expr)
 136      */
 137  
 138      /*
 139      CREATE [UNIQUE|FULLTEXT] INDEX index_name
 140          ON tbl_name (col_name[(length)],... )
 141      */
 142  
 143  	function _IndexSQL($idxname, $tabname, $flds, $idxoptions)
 144      {
 145          $sql = array();
 146  
 147          if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) {
 148              if ($this->alterTableAddIndex) $sql[] = "ALTER TABLE $tabname DROP INDEX $idxname";
 149              else $sql[] = sprintf($this->dropIndex, $idxname, $tabname);
 150  
 151              if ( isset($idxoptions['DROP']) )
 152                  return $sql;
 153          }
 154  
 155          if ( empty ($flds) ) {
 156              return $sql;
 157          }
 158  
 159          if (isset($idxoptions['FULLTEXT'])) {
 160              $unique = ' FULLTEXT';
 161          } elseif (isset($idxoptions['UNIQUE'])) {
 162              $unique = ' UNIQUE';
 163          } else {
 164              $unique = '';
 165          }
 166  
 167          if ( is_array($flds) ) $flds = implode(', ',$flds);
 168  
 169          if ($this->alterTableAddIndex) $s = "ALTER TABLE $tabname ADD $unique INDEX $idxname ";
 170          else $s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname;
 171  
 172          $s .= ' (' . $flds . ')';
 173  
 174          if ( isset($idxoptions[$this->upperName]) )
 175              $s .= $idxoptions[$this->upperName];
 176  
 177          $sql[] = $s;
 178  
 179          return $sql;
 180      }
 181  }