adodb-pdo_oci.inc.php

来自「精通PHP应用开发例程」· PHP 代码 · 共 93 行

<?php


/*
V4.92a 29 Aug 2006  (c) 2000-2006 John Lim (jlim#natsoft.com.my). 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 8.
 
*/ 

class ADODB_pdo_oci extends ADODB_pdo_base {

	var $concat_operator='||';
	var $sysDate = "TRUNC(SYSDATE)";
	var $sysTimeStamp = 'SYSDATE';
	var $NLS_DATE_FORMAT = 'YYYY-MM-DD';  // To include time, use 'RRRR-MM-DD HH24:MI:SS'
	var $random = "abs(mod(DBMS_RANDOM.RANDOM,10000001)/10000000)";
	var $metaTablesSQL = "select table_name,table_type from cat where table_type in ('TABLE','VIEW')";
	var $metaColumnsSQL = "select cname,coltype,width, SCALE, PRECISION, NULLS, DEFAULTVAL from col where tname='%s' order by colno"; 
		
 	var $_initdate = true;
	var $_hasdual = true;
	
	function _init($parentDriver)
	{
		$parentDriver->_bindInputArray = true;
		$parentDriver->_nestedSQL = true;
		if ($this->_initdate) {
			$parentDriver->Execute("ALTER SESSION SET NLS_DATE_FORMAT='".$this->NLS_DATE_FORMAT."'");
		}
	}
	
	function &MetaTables($ttype=false,$showSchema=false,$mask=false) 
	{
		if ($mask) {
			$save = $this->metaTablesSQL;
			$mask = $this->qstr(strtoupper($mask));
			$this->metaTablesSQL .= " AND table_name like $mask";
		}
		$ret =& ADOConnection::MetaTables($ttype,$showSchema);
		
		if ($mask) {
			$this->metaTablesSQL = $save;
		}
		return $ret;
	}
	
	function &MetaColumns($table) 
	{
	global $ADODB_FETCH_MODE;
	
		$false = false;
		$save = $ADODB_FETCH_MODE;
		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
		if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
		
		$rs = $this->Execute(sprintf($this->metaColumnsSQL,strtoupper($table)));
		
		if (isset($savem)) $this->SetFetchMode($savem);
		$ADODB_FETCH_MODE = $save;
		if (!$rs) {
			return $false;
		}
		$retarr = array();
		while (!$rs->EOF) { //print_r($rs->fields);
			$fld = new ADOFieldObject();
	   		$fld->name = $rs->fields[0];
	   		$fld->type = $rs->fields[1];
	   		$fld->max_length = $rs->fields[2];
			$fld->scale = $rs->fields[3];
			if ($rs->fields[1] == 'NUMBER' && $rs->fields[3] == 0) {
				$fld->type ='INT';
	     		$fld->max_length = $rs->fields[4];
	    	}	
		   	$fld->not_null = (strncmp($rs->fields[5], 'NOT',3) === 0);
			$fld->binary = (strpos($fld->type,'BLOB') !== false);
			$fld->default_value = $rs->fields[6];
			
			if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM) $retarr[] = $fld;	
			else $retarr[strtoupper($fld->name)] = $fld;
			$rs->MoveNext();
		}
		$rs->Close();
		if (empty($retarr))
			return  $false;
		else 
			return $retarr;
	}
}

?>