datadict-db2.inc.php

来自「php聊天源码」· PHP 代码 · 共 76 行

<?php

/**
  V4.51 29 July 2004  (c) 2000-2004 John Lim ([e-mail]). All rights reserved.
  Released under both BSD license and Lesser GPL library license. 
  Whenever there is any discrepancy between the two licenses, 
  the BSD license will take precedence.
	
  Set tabs to 4 for best viewing.
 
*/
// security - hide paths
if (!defined('ADODB_DIR')) die();

class ADODB2_db2 extends ADODB_DataDict {
	
	var $databaseType = 'db2';
	var $seqField = false;
 	
 	function ActualType($meta)
	{
		switch($meta) {
		case 'C': return 'VARCHAR';
		case 'XL': return 'CLOB';
		case 'X': return 'VARCHAR(3600)'; 
		
		case 'C2': return 'VARCHAR'; // up to 32K
		case 'X2': return 'VARCHAR(3600)'; // up to 32000, but default page size too small
		
		case 'B': return 'BLOB';
			
		case 'D': return 'DATE';
		case 'T': return 'TIMESTAMP';
		
		case 'L': return 'SMALLINT';
		case 'I': return 'INTEGER';
		case 'I1': return 'SMALLINT';
		case 'I2': return 'SMALLINT';
		case 'I4': return 'INTEGER';
		case 'I8': return 'BIGINT';
		
		case 'F': return 'DOUBLE';
		case 'N': return 'DECIMAL';
		default:
			return $meta;
		}
	}
	
	// return string must begin with space
	function _CreateSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint)
	{	
		$suffix = '';
		if ($fautoinc) return ' GENERATED ALWAYS AS IDENTITY'; # as identity start with 
		if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
		if ($fnotnull) $suffix .= ' NOT NULL';
		if ($fconstraint) $suffix .= ' '.$fconstraint;
		return $suffix;
	}

	function AlterColumnSQL($tabname, $flds)
	{
		if ($this->debug) ADOConnection::outp("AlterColumnSQL not supported");
		return array();
	}
	
	
	function DropColumnSQL($tabname, $flds)
	{
		if ($this->debug) ADOConnection::outp("DropColumnSQL not supported");
		return array();
	}
	
}


?>