library/adodb/datadict/datadict-sybase.inc.php

   1 <?php
   2
   3 /**
   4   V4.20 22 Feb 2004  (c) 2000-2004 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_sybase extends ADODB_DataDict {
  14         var $databaseType = 'sybase';
  15
  16         var $dropIndex = 'DROP INDEX %2$s.%1$s';
  17
  18         function MetaType($t,$len=-1,$fieldobj=false)
  19         {
  20                 if (is_object($t)) {
  21                         $fieldobj = $t;
  22                         $t = $fieldobj->type;
  23                         $len = $fieldobj->max_length;
  24                 }
  25
  26                 $len = -1; // mysql max_length is not accurate
  27                 switch (strtoupper($t)) {
  28
  29                 case 'INT':
  30                 case 'INTEGER': return  'I';
  31                 case 'BIT':
  32                 case 'TINYINT': return  'I1';
  33                 case 'SMALLINT': return 'I2';
  34                 case 'BIGINT':  return  'I8';
  35
  36                 case 'REAL':
  37                 case 'FLOAT': return 'F';
  38                 default: return parent::MetaType($t,$len,$fieldobj);
  39                 }
  40         }
  41
  42         function ActualType($meta)
  43         {
  44                 switch(strtoupper($meta)) {
  45                 case 'C': return 'VARCHAR';
  46                 case 'XL':
  47                 case 'X': return 'TEXT';
  48
  49                 case 'C2': return 'NVARCHAR';
  50                 case 'X2': return 'NTEXT';
  51
  52                 case 'B': return 'IMAGE';
  53
  54                 case 'D': return 'DATETIME';
  55                 case 'T': return 'DATETIME';
  56                 case 'L': return 'BIT';
  57
  58                 case 'I': return 'INT';
  59                 case 'I1': return 'TINYINT';
  60                 case 'I2': return 'SMALLINT';
  61                 case 'I4': return 'INT';
  62                 case 'I8': return 'BIGINT';
  63
  64                 case 'F': return 'REAL';
  65                 case 'N': return 'NUMERIC';
  66                 default:
  67                         return $meta;
  68                 }
  69         }
  70
  71
  72         function AddColumnSQL($tabname, $flds)
  73         {
  74                 $tabname = $this->TableName ($tabname);
  75                 $f = array();
  76                 list($lines,$pkey) = $this->_GenFields($flds);
  77                 $s = "ALTER TABLE $tabname $this->addCol";
  78                 foreach($lines as $v) {
  79                         $f[] = "\n $v";
  80                 }
  81                 $s .= implode(',',$f);
  82                 $sql[] = $s;
  83                 return $sql;
  84         }
  85
  86         function AlterColumnSQL($tabname, $flds)
  87         {
  88                 $tabname = $this->TableName ($tabname);
  89                 $sql = array();
  90                 list($lines,$pkey) = $this->_GenFields($flds);
  91                 foreach($lines as $v) {
  92                         $sql[] = "ALTER TABLE $tabname $this->alterCol $v";
  93                 }
  94
  95                 return $sql;
  96         }
  97
  98         function DropColumnSQL($tabname, $flds)
  99         {
 100                 $tabname = $this->TableName ($tabname);
 101                 if (!is_array($flds)) $flds = explode(',',$flds);
 102                 $f = array();
 103                 $s = "ALTER TABLE $tabname";
 104                 foreach($flds as $v) {
 105                         $f[] = "\n$this->dropCol $v";
 106                 }
 107                 $s .= implode(',',$f);
 108                 $sql[] = $s;
 109                 return $sql;
 110         }
 111
 112         // return string must begin with space
 113         function _CreateSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint)
 114         {
 115                 $suffix = '';
 116                 if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
 117                 if ($fautoinc) $suffix .= ' DEFAULT AUTOINCREMENT';
 118                 if ($fnotnull) $suffix .= ' NOT NULL';
 119                 else if ($suffix == '') $suffix .= ' NULL';
 120                 if ($fconstraint) $suffix .= ' '.$fconstraint;
 121                 return $suffix;
 122         }
 123
 124         /*
 125 CREATE TABLE
 126     [ database_name.[ owner ] . | owner. ] table_name
 127     ( { < column_definition >
 128         | column_name AS computed_column_expression
 129         | < table_constraint > ::= [ CONSTRAINT constraint_name ] }
 130
 131             | [ { PRIMARY KEY | UNIQUE } [ ,...n ]
 132     )
 133
 134 [ ON { filegroup | DEFAULT } ]
 135 [ TEXTIMAGE_ON { filegroup | DEFAULT } ]
 136
 137 < column_definition > ::= { column_name data_type }
 138     [ COLLATE < collation_name > ]
 139     [ [ DEFAULT constant_expression ]
 140         | [ IDENTITY [ ( seed , increment ) [ NOT FOR REPLICATION ] ] ]
 141     ]
 142     [ ROWGUIDCOL]
 143     [ < column_constraint > ] [ ...n ]
 144
 145 < column_constraint > ::= [ CONSTRAINT constraint_name ]
 146     { [ NULL | NOT NULL ]
 147         | [ { PRIMARY KEY | UNIQUE }
 148             [ CLUSTERED | NONCLUSTERED ]
 149             [ WITH FILLFACTOR = fillfactor ]
 150             [ON {filegroup | DEFAULT} ] ]
 151         ]
 152         | [ [ FOREIGN KEY ]
 153             REFERENCES ref_table [ ( ref_column ) ]
 154             [ ON DELETE { CASCADE | NO ACTION } ]
 155             [ ON UPDATE { CASCADE | NO ACTION } ]
 156             [ NOT FOR REPLICATION ]
 157         ]
 158         | CHECK [ NOT FOR REPLICATION ]
 159         ( logical_expression )
 160     }
 161
 162 < table_constraint > ::= [ CONSTRAINT constraint_name ]
 163     { [ { PRIMARY KEY | UNIQUE }
 164         [ CLUSTERED | NONCLUSTERED ]
 165         { ( column [ ASC | DESC ] [ ,...n ] ) }
 166         [ WITH FILLFACTOR = fillfactor ]
 167         [ ON { filegroup | DEFAULT } ]
 168     ]
 169     | FOREIGN KEY
 170         [ ( column [ ,...n ] ) ]
 171         REFERENCES ref_table [ ( ref_column [ ,...n ] ) ]
 172         [ ON DELETE { CASCADE | NO ACTION } ]
 173         [ ON UPDATE { CASCADE | NO ACTION } ]
 174         [ NOT FOR REPLICATION ]
 175     | CHECK [ NOT FOR REPLICATION ]
 176         ( search_conditions )
 177     }
 178
 179
 180         */
 181
 182         /*
 183         CREATE [ UNIQUE ] [ CLUSTERED | NONCLUSTERED ] INDEX index_name
 184     ON { table | view } ( column [ ASC | DESC ] [ ,...n ] )
 185                 [ WITH < index_option > [ ,...n] ]
 186                 [ ON filegroup ]
 187                 < index_option > :: =
 188                     { PAD_INDEX |
 189                         FILLFACTOR = fillfactor |
 190                         IGNORE_DUP_KEY |
 191                         DROP_EXISTING |
 192                     STATISTICS_NORECOMPUTE |
 193                     SORT_IN_TEMPDB
 194                 }
 195 */
 196         function _IndexSQL($idxname, $tabname, $flds, $idxoptions)
 197         {
 198                 $sql = array();
 199
 200                 if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) {
 201                         $sql[] = sprintf ($this->dropIndex, $idxname, $tabname);
 202                         if ( isset($idxoptions['DROP']) )
 203                                 return $sql;
 204                 }
 205
 206                 if ( empty ($flds) ) {
 207                         return $sql;
 208                 }
 209
 210                 $unique = isset($idxoptions['UNIQUE']) ? ' UNIQUE' : '';
 211                 $clustered = isset($idxoptions['CLUSTERED']) ? ' CLUSTERED' : '';
 212
 213                 if ( is_array($flds) )
 214                         $flds = implode(', ',$flds);
 215                 $s = 'CREATE' . $unique . $clustered . ' INDEX ' . $idxname . ' ON ' . $tabname . ' (' . $flds . ')';
 216
 217                 if ( isset($idxoptions[$this->upperName]) )
 218                         $s .= $idxoptions[$this->upperName];
 219
 220                 $sql[] = $s;
 221
 222                 return $sql;
 223         }
 224 }
 225 ?>