gacl/adodb/datadict/datadict-firebird.inc.php

   1 <?php
   2
   3 /**
   4   V4.92a 29 Aug 2006  (c) 2000-2006 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 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 'T': return 'TIMESTAMP';
  34
  35                 case 'L': return 'SMALLINT';
  36                 case 'I': return 'INTEGER';
  37                 case 'I1': return 'SMALLINT';
  38                 case 'I2': return 'SMALLINT';
  39                 case 'I4': return 'INTEGER';
  40                 case 'I8': return 'INTEGER';
  41
  42                 case 'F': return 'DOUBLE PRECISION';
  43                 case 'N': return 'DECIMAL';
  44                 default:
  45                         return $meta;
  46                 }
  47         }
  48
  49         function NameQuote($name = NULL)
  50         {
  51                 if (!is_string($name)) {
  52                         return FALSE;
  53                 }
  54
  55                 $name = trim($name);
  56
  57                 if ( !is_object($this->connection) ) {
  58                         return $name;
  59                 }
  60
  61                 $quote = $this->connection->nameQuote;
  62
  63                 // if name is of the form `name`, quote it
  64                 if ( preg_match('/^`(.+)`$/', $name, $matches) ) {
  65                         return $quote . $matches[1] . $quote;
  66                 }
  67
  68                 // if name contains special characters, quote it
  69                 if ( !preg_match('/^[' . $this->nameRegex . ']+$/', $name) ) {
  70                         return $quote . $name . $quote;
  71                 }
  72
  73                 return $quote . $name . $quote;
  74         }
  75
  76         function CreateDatabase($dbname, $options=false)
  77         {
  78                 $options = $this->_Options($options);
  79                 $sql = array();
  80
  81                 $sql[] = "DECLARE EXTERNAL FUNCTION LOWER CSTRING(80) RETURNS CSTRING(80) FREE_IT ENTRY_POINT 'IB_UDF_lower' MODULE_NAME 'ib_udf'";
  82
  83                 return $sql;
  84         }
  85
  86         function _DropAutoIncrement($t)
  87         {
  88                 if (strpos($t,'.') !== false) {
  89                         $tarr = explode('.',$t);
  90                         return 'DROP GENERATOR '.$tarr[0].'."gen_'.$tarr[1].'"';
  91                 }
  92                 return 'DROP GENERATOR "GEN_'.$t;
  93         }
  94
  95
  96         function _CreateSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
  97         {
  98                 $suffix = '';
  99
 100                 if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
 101                 if ($fnotnull) $suffix .= ' NOT NULL';
 102                 if ($fautoinc) $this->seqField = $fname;
 103                 if ($fconstraint) $suffix .= ' '.$fconstraint;
 104
 105                 return $suffix;
 106         }
 107
 108 /*
 109 CREATE or replace TRIGGER jaddress_insert
 110 before insert on jaddress
 111 for each row
 112 begin
 113 IF ( NEW."seqField" IS NULL OR NEW."seqField" = 0 ) THEN
 114   NEW."seqField" = GEN_ID("GEN_tabname", 1);
 115 end;
 116 */
 117         function _Triggers($tabname,$tableoptions)
 118         {
 119                 if (!$this->seqField) return array();
 120
 121                 $tab1 = preg_replace( '/"/', '', $tabname );
 122                 if ($this->schema) {
 123                         $t = strpos($tab1,'.');
 124                         if ($t !== false) $tab = substr($tab1,$t+1);
 125                         else $tab = $tab1;
 126                         $seqField = $this->seqField;
 127                         $seqname = $this->schema.'.'.$this->seqPrefix.$tab;
 128                         $trigname = $this->schema.'.trig_'.$this->seqPrefix.$tab;
 129                 } else {
 130                         $seqField = $this->seqField;
 131                         $seqname = $this->seqPrefix.$tab1;
 132                         $trigname = 'trig_'.$seqname;
 133                 }
 134                 if (isset($tableoptions['REPLACE']))
 135                 { $sql[] = "DROP GENERATOR \"$seqname\"";
 136                   $sql[] = "CREATE GENERATOR \"$seqname\"";
 137                   $sql[] = "ALTER TRIGGER \"$trigname\" BEFORE INSERT OR UPDATE AS BEGIN IF ( NEW.$seqField IS NULL OR NEW.$seqField = 0 ) THEN NEW.$seqField = GEN_ID(\"$seqname\", 1); END";
 138                 }
 139                 else
 140                 { $sql[] = "CREATE GENERATOR \"$seqname\"";
 141                   $sql[] = "CREATE TRIGGER \"$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";
 142                 }
 143
 144                 $this->seqField = false;
 145                 return $sql;
 146         }
 147
 148 }
 149
 150
 151 ?>