Location: PHPKode > projects > Open Harvester System > Open Harvester System-2.3.1/ohs-2.3.1/lib/pkp/lib/adodb/datadict/datadict-mysql.inc.php
<?php

/**
  V4.90 8 June 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 4 for best viewing.
 
*/

// security - hide paths
if (!defined('ADODB_DIR')) die();

class ADODB2_mysql extends ADODB_DataDict {
	var $databaseType = 'mysql';
	var $alterCol = ' MODIFY COLUMN';
	var $alterTableAddIndex = true;
	var $dropTable = 'DROP TABLE IF EXISTS %s'; // requires mysql 3.22 or later
	
	var $dropIndex = 'DROP INDEX %s ON %s';
	var $renameColumn = 'ALTER TABLE %s CHANGE COLUMN %s %s %s';	// needs column-definition!
	
	function MetaType($t,$len=-1,$fieldobj=false)
	{
		if (is_object($t)) {
			$fieldobj = $t;
			$t = $fieldobj->type;
			$len = $fieldobj->max_length;
		}
		$is_serial = is_object($fieldobj) && $fieldobj->primary_key && $fieldobj->auto_increment;
		
		$len = -1; // mysql max_length is not accurate
		switch (strtoupper($t)) {
		case 'STRING': 
		case 'CHAR':
		case 'VARCHAR': 
		case 'TINYBLOB': 
		case 'TINYTEXT': 
		case 'ENUM': 
		case 'SET':
			if ($len <= $this->blobSize) return 'C';
			
		case 'TEXT':
		case 'LONGTEXT': 
		case 'MEDIUMTEXT':
			return 'X';
			
		// php_mysql extension always returns 'blob' even if 'text'
		// so we have to check whether binary...
		case 'IMAGE':
		case 'LONGBLOB': 
		case 'BLOB':
		case 'MEDIUMBLOB':
			return !empty($fieldobj->binary) ? 'B' : 'X';
			
		case 'YEAR':
		case 'DATE': return 'D';
		
		case 'TIME':
		case 'DATETIME':
		case 'TIMESTAMP': return 'T';
		
		case 'FLOAT':
		case 'DOUBLE':
			return 'F';
			
		case 'INT': 
		case 'INTEGER': return $is_serial ? 'R' : 'I';
		case 'TINYINT': return $is_serial ? 'R' : 'I1';
		case 'SMALLINT': return $is_serial ? 'R' : 'I2';
		case 'MEDIUMINT': return $is_serial ? 'R' : 'I4';
		case 'BIGINT':  return $is_serial ? 'R' : 'I8';
		default: return 'N';
		}
	}

	function ActualType($meta)
	{
		switch(strtoupper($meta)) {
		case 'C': return 'VARCHAR';
		case 'XL':return 'LONGTEXT';
		case 'X': return 'TEXT';
		
		case 'C2': return 'VARCHAR';
		case 'X2': return 'LONGTEXT';
		
		case 'B': return 'LONGBLOB';
			
		case 'D': return 'DATE';
		case 'T': return 'DATETIME';
		case 'L': return 'TINYINT';
		
		case 'R':
		case 'I4':
		case 'I': return 'INTEGER';
		case 'I1': return 'TINYINT';
		case 'I2': return 'SMALLINT';
		case 'I8': return 'BIGINT';
		
		case 'F': return 'DOUBLE';
		case 'N': return 'NUMERIC';
		default:
			return $meta;
		}
	}
	
	// return string must begin with space
	function _CreateSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
	{	
		$suffix = '';
		if ($funsigned) $suffix .= ' UNSIGNED';
		if ($fnotnull) $suffix .= ' NOT NULL';
		if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
		if ($fautoinc) $suffix .= ' AUTO_INCREMENT';
		if ($fconstraint) $suffix .= ' '.$fconstraint;
		return $suffix;
	}
	
	/*
	CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name [(create_definition,...)]
		[table_options] [select_statement]
		create_definition:
		col_name type [NOT NULL | NULL] [DEFAULT default_value] [AUTO_INCREMENT]
		[PRIMARY KEY] [reference_definition]
		or PRIMARY KEY (index_col_name,...)
		or KEY [index_name] (index_col_name,...)
		or INDEX [index_name] (index_col_name,...)
		or UNIQUE [INDEX] [index_name] (index_col_name,...)
		or FULLTEXT [INDEX] [index_name] (index_col_name,...)
		or [CONSTRAINT symbol] FOREIGN KEY [index_name] (index_col_name,...)
		[reference_definition]
		or CHECK (expr)
	*/
	
	/*
	CREATE [UNIQUE|FULLTEXT] INDEX index_name
		ON tbl_name (col_name[(length)],... )
	*/
	
	function _IndexSQL($idxname, $tabname, $flds, $idxoptions)
	{
		$sql = array();
		
		if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) {
			if ($this->alterTableAddIndex) $sql[] = "ALTER TABLE $tabname DROP INDEX $idxname";
			else $sql[] = sprintf($this->dropIndex, $idxname, $tabname);

			if ( isset($idxoptions['DROP']) )
				return $sql;
		}
		
		if ( empty ($flds) ) {
			return $sql;
		}
		
		if (isset($idxoptions['FULLTEXT'])) {
			$unique = ' FULLTEXT';
		} elseif (isset($idxoptions['UNIQUE'])) {
			$unique = ' UNIQUE';
		} else {
			$unique = '';
		}
		
		if ( is_array($flds) ) $flds = implode(', ',$flds);
		
		if ($this->alterTableAddIndex) $s = "ALTER TABLE $tabname ADD $unique INDEX $idxname ";
		else $s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname;
		
		$s .= ' (' . $flds . ')';
		
		if ( isset($idxoptions[$this->upperName]) )
			$s .= $idxoptions[$this->upperName];
		
		$sql[] = $s;
		
		return $sql;
	}
	
	// Character encoding support for CREATE DATABASE / CREATE TABLE
	// Added 2004-06-20 by Kevin Jamieson (http://www.pkp.ubc.ca/)
	// NOTE: If a character set is specified, assumes the database server supports this
	function CreateDatabase($dbname,$options=false)
	{
		$options = $this->_Options($options);
		$sql = array();
		
		$s = 'CREATE DATABASE ' . $this->NameQuote($dbname);
		if (isset($options[$this->upperName]))
			$s .= ' '.$options[$this->upperName];
		if ($this->charSet)
			$s .= sprintf(' DEFAULT CHARACTER SET %s', $this->charSet);
		$sql[] = $s;
		return $sql;
	}
	
	function _TableSQL($tabname,$lines,$pkey,$tableoptions)
	{
		$sql = array();
		
		if (isset($tableoptions['REPLACE']) || isset ($tableoptions['DROP'])) {
			$sql[] = sprintf($this->dropTable,$tabname);
			if ($this->autoIncrement) {
				$sInc = $this->_DropAutoIncrement($tabname);
				if ($sInc) $sql[] = $sInc;
			}
			if ( isset ($tableoptions['DROP']) ) {
				return $sql;
			}
		}
		$s = "CREATE TABLE $tabname (\n";
		$s .= implode(",\n", $lines);
		if (sizeof($pkey)>0) {
			$s .= ",\n                 PRIMARY KEY (";
			$s .= implode(", ",$pkey).")";
		}
		if (isset($tableoptions['CONSTRAINTS'])) 
			$s .= "\n".$tableoptions['CONSTRAINTS'];
		
		if (isset($tableoptions[$this->upperName.'_CONSTRAINTS'])) 
			$s .= "\n".$tableoptions[$this->upperName.'_CONSTRAINTS'];
		
		$s .= "\n)";
		if (isset($tableoptions[$this->upperName])) $s .= $tableoptions[$this->upperName];
		if ($this->charSet)
			$s .= sprintf(' DEFAULT CHARACTER SET %s', $this->charSet);
		$sql[] = $s;
		
		return $sql;
	}
}
?>
Return current item: Open Harvester System