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   1  <?php
   2  
   3  /**
   4    V5.11 5 May 2010   (c) 2000-2010 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  class ADODB2_firebird extends ADODB_DataDict {
  14      
  15      var $databaseType = 'firebird';
  16      var $seqField = false;
  17      var $seqPrefix = 'gen_';
  18      var $blobSize = 40000;    
  19       
  20   	function ActualType($meta)
  21      {
  22          switch($meta) {
  23          case 'C': return 'VARCHAR';
  24          case 'XL': return 'VARCHAR(32000)'; 
  25          case 'X': return 'VARCHAR(4000)'; 
  26          
  27          case 'C2': return 'VARCHAR'; // up to 32K
  28          case 'X2': return 'VARCHAR(4000)';
  29          
  30          case 'B': return 'BLOB';
  31              
  32          case 'D': return 'DATE';
  33          case 'TS':
  34          case 'T': return 'TIMESTAMP';
  35          
  36          case 'L': return 'SMALLINT';
  37          case 'I': return 'INTEGER';
  38          case 'I1': return 'SMALLINT';
  39          case 'I2': return 'SMALLINT';
  40          case 'I4': return 'INTEGER';
  41          case 'I8': return 'INTEGER';
  42          
  43          case 'F': return 'DOUBLE PRECISION';
  44          case 'N': return 'DECIMAL';
  45          default:
  46              return $meta;
  47          }
  48      }
  49      
  50  	function NameQuote($name = NULL)
  51      {
  52          if (!is_string($name)) {
  53              return FALSE;
  54          }
  55          
  56          $name = trim($name);
  57          
  58          if ( !is_object($this->connection) ) {
  59              return $name;
  60          }
  61          
  62          $quote = $this->connection->nameQuote;
  63          
  64          // if name is of the form `name`, quote it
  65          if ( preg_match('/^`(.+)`$/', $name, $matches) ) {
  66              return $quote . $matches[1] . $quote;
  67          }
  68          
  69          // if name contains special characters, quote it
  70          if ( !preg_match('/^[' . $this->nameRegex . ']+$/', $name) ) {
  71              return $quote . $name . $quote;
  72          }
  73          
  74          return $quote . $name . $quote;
  75      }
  76  
  77  	function CreateDatabase($dbname, $options=false)
  78      {
  79          $options = $this->_Options($options);
  80          $sql = array();
  81          
  82          $sql[] = "DECLARE EXTERNAL FUNCTION LOWER CSTRING(80) RETURNS CSTRING(80) FREE_IT ENTRY_POINT 'IB_UDF_lower' MODULE_NAME 'ib_udf'";
  83          
  84          return $sql;
  85      }
  86      
  87  	function _DropAutoIncrement($t)
  88      {
  89          if (strpos($t,'.') !== false) {
  90              $tarr = explode('.',$t);
  91              return 'DROP GENERATOR '.$tarr[0].'."gen_'.$tarr[1].'"';
  92          }
  93          return 'DROP GENERATOR "GEN_'.$t;
  94      }
  95      
  96  
  97  	function _CreateSuffix($fname,&$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
  98      {
  99          $suffix = '';
 100          
 101          if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
 102          if ($fnotnull) $suffix .= ' NOT NULL';
 103          if ($fautoinc) $this->seqField = $fname;
 104          if ($fconstraint) $suffix .= ' '.$fconstraint;
 105          
 106          return $suffix;
 107      }
 108      
 109  /*
 110  CREATE or replace TRIGGER jaddress_insert
 111  before insert on jaddress
 112  for each row
 113  begin
 114  IF ( NEW."seqField" IS NULL OR NEW."seqField" = 0 ) THEN
 115    NEW."seqField" = GEN_ID("GEN_tabname", 1);
 116  end;
 117  */
 118  	function _Triggers($tabname,$tableoptions)
 119      {    
 120          if (!$this->seqField) return array();
 121          
 122          $tab1 = preg_replace( '/"/', '', $tabname );
 123          if ($this->schema) {
 124              $t = strpos($tab1,'.');
 125              if ($t !== false) $tab = substr($tab1,$t+1);
 126              else $tab = $tab1;
 127              $seqField = $this->seqField;
 128              $seqname = $this->schema.'.'.$this->seqPrefix.$tab;
 129              $trigname = $this->schema.'.trig_'.$this->seqPrefix.$tab;
 130          } else {
 131              $seqField = $this->seqField;
 132              $seqname = $this->seqPrefix.$tab1;
 133              $trigname = 'trig_'.$seqname;
 134          }
 135          if (isset($tableoptions['REPLACE']))
 136          { $sql[] = "DROP GENERATOR \"$seqname\"";
 137            $sql[] = "CREATE GENERATOR \"$seqname\"";
 138            $sql[] = "ALTER TRIGGER \"$trigname\" BEFORE INSERT OR UPDATE AS BEGIN IF ( NEW.$seqField IS NULL OR NEW.$seqField = 0 ) THEN NEW.$seqField = GEN_ID(\"$seqname\", 1); END";
 139          }
 140          else
 141          { $sql[] = "CREATE GENERATOR \"$seqname\"";
 142            $sql[] = "CREATE TRIGGER \"$trigname\" FOR $tabname BEFORE INSERT OR UPDATE AS BEGIN IF ( NEW.$seqField IS NULL OR NEW.$seqField = 0 ) THEN NEW.$seqField = GEN_ID(\"$seqname\", 1); END";
 143          }
 144          
 145          $this->seqField = false;
 146          return $sql;
 147      }
 148  
 149  }
 150  
 151  
 152  ?>