| 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 | // security - hide paths
|
|---|
| 13 | if (!defined('ADODB_DIR')) die();
|
|---|
| 14 |
|
|---|
| 15 | class ADODB2_db2 extends ADODB_DataDict {
|
|---|
| 16 |
|
|---|
| 17 | var $databaseType = 'db2';
|
|---|
| 18 | var $seqField = false;
|
|---|
| 19 |
|
|---|
| 20 | function ActualType($meta)
|
|---|
| 21 | {
|
|---|
| 22 | switch($meta) {
|
|---|
| 23 | case 'C': return 'VARCHAR';
|
|---|
| 24 | case 'XL': return 'CLOB';
|
|---|
| 25 | case 'X': return 'VARCHAR(3600)';
|
|---|
| 26 |
|
|---|
| 27 | case 'C2': return 'VARCHAR'; // up to 32K
|
|---|
| 28 | case 'X2': return 'VARCHAR(3600)'; // up to 32000, but default page size too small
|
|---|
| 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 'BIGINT';
|
|---|
| 41 |
|
|---|
| 42 | case 'F': return 'DOUBLE';
|
|---|
| 43 | case 'N': return 'DECIMAL';
|
|---|
| 44 | default:
|
|---|
| 45 | return $meta;
|
|---|
| 46 | }
|
|---|
| 47 | }
|
|---|
| 48 |
|
|---|
| 49 | // return string must begin with space
|
|---|
| 50 | function _CreateSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint)
|
|---|
| 51 | {
|
|---|
| 52 | $suffix = '';
|
|---|
| 53 | if ($fautoinc) return ' GENERATED ALWAYS AS IDENTITY'; # as identity start with
|
|---|
| 54 | if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
|
|---|
| 55 | if ($fnotnull) $suffix .= ' NOT NULL';
|
|---|
| 56 | if ($fconstraint) $suffix .= ' '.$fconstraint;
|
|---|
| 57 | return $suffix;
|
|---|
| 58 | }
|
|---|
| 59 |
|
|---|
| 60 | function AlterColumnSQL($tabname, $flds)
|
|---|
| 61 | {
|
|---|
| 62 | if ($this->debug) ADOConnection::outp("AlterColumnSQL not supported");
|
|---|
| 63 | return array();
|
|---|
| 64 | }
|
|---|
| 65 |
|
|---|
| 66 |
|
|---|
| 67 | function DropColumnSQL($tabname, $flds)
|
|---|
| 68 | {
|
|---|
| 69 | if ($this->debug) ADOConnection::outp("DropColumnSQL not supported");
|
|---|
| 70 | return array();
|
|---|
| 71 | }
|
|---|
| 72 |
|
|---|
| 73 |
|
|---|
| 74 | function ChangeTableSQL($tablename, $flds, $tableoptions = false)
|
|---|
| 75 | {
|
|---|
| 76 |
|
|---|
| 77 | /**
|
|---|
| 78 | Allow basic table changes to DB2 databases
|
|---|
| 79 | DB2 will fatally reject changes to non character columns
|
|---|
| 80 |
|
|---|
| 81 | */
|
|---|
| 82 |
|
|---|
| 83 | $validTypes = array("CHAR","VARC");
|
|---|
| 84 | $invalidTypes = array("BIGI","BLOB","CLOB","DATE", "DECI","DOUB", "INTE", "REAL","SMAL", "TIME");
|
|---|
| 85 | // check table exists
|
|---|
| 86 | $cols = &$this->MetaColumns($tablename);
|
|---|
| 87 | if ( empty($cols)) {
|
|---|
| 88 | return $this->CreateTableSQL($tablename, $flds, $tableoptions);
|
|---|
| 89 | }
|
|---|
| 90 |
|
|---|
| 91 | // already exists, alter table instead
|
|---|
| 92 | list($lines,$pkey) = $this->_GenFields($flds);
|
|---|
| 93 | $alter = 'ALTER TABLE ' . $this->TableName($tablename);
|
|---|
| 94 | $sql = array();
|
|---|
| 95 |
|
|---|
| 96 | foreach ( $lines as $id => $v ) {
|
|---|
| 97 | if ( isset($cols[$id]) && is_object($cols[$id]) ) {
|
|---|
| 98 | /**
|
|---|
| 99 | If the first field of $v is the fieldname, and
|
|---|
| 100 | the second is the field type/size, we assume its an
|
|---|
| 101 | attempt to modify the column size, so check that it is allowed
|
|---|
| 102 | $v can have an indeterminate number of blanks between the
|
|---|
| 103 | fields, so account for that too
|
|---|
| 104 | */
|
|---|
| 105 | $vargs = explode(' ' , $v);
|
|---|
| 106 | // assume that $vargs[0] is the field name.
|
|---|
| 107 | $i=0;
|
|---|
| 108 | // Find the next non-blank value;
|
|---|
| 109 | for ($i=1;$i<sizeof($vargs);$i++)
|
|---|
| 110 | if ($vargs[$i] != '')
|
|---|
| 111 | break;
|
|---|
| 112 |
|
|---|
| 113 | // if $vargs[$i] is one of the following, we are trying to change the
|
|---|
| 114 | // size of the field, if not allowed, simply ignore the request.
|
|---|
| 115 | if (in_array(substr($vargs[$i],0,4),$invalidTypes))
|
|---|
| 116 | continue;
|
|---|
| 117 | // insert the appropriate DB2 syntax
|
|---|
| 118 | if (in_array(substr($vargs[$i],0,4),$validTypes)) {
|
|---|
| 119 | array_splice($vargs,$i,0,array('SET','DATA','TYPE'));
|
|---|
| 120 | }
|
|---|
| 121 |
|
|---|
| 122 | // Now Look for the NOT NULL statement as this is not allowed in
|
|---|
| 123 | // the ALTER table statement. If it is in there, remove it
|
|---|
| 124 | if (in_array('NOT',$vargs) && in_array('NULL',$vargs)) {
|
|---|
| 125 | for ($i=1;$i<sizeof($vargs);$i++)
|
|---|
| 126 | if ($vargs[$i] == 'NOT')
|
|---|
| 127 | break;
|
|---|
| 128 | array_splice($vargs,$i,2,'');
|
|---|
| 129 | }
|
|---|
| 130 | $v = implode(' ',$vargs);
|
|---|
| 131 | $sql[] = $alter . $this->alterCol . ' ' . $v;
|
|---|
| 132 | } else {
|
|---|
| 133 | $sql[] = $alter . $this->addCol . ' ' . $v;
|
|---|
| 134 | }
|
|---|
| 135 | }
|
|---|
| 136 |
|
|---|
| 137 | return $sql;
|
|---|
| 138 | }
|
|---|
| 139 |
|
|---|
| 140 | }
|
|---|
| 141 |
|
|---|
| 142 |
|
|---|
| 143 | ?> |
|---|
