/lenasys/trunk : contents of codeigniter/system/database/drivers/mysql/mysql

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<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package		CodeIgniter
 * @author		ExpressionEngine Dev Team
 * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * MySQL Forge Class
 *
 * @category	Database
 * @author		ExpressionEngine Dev Team
 * @link		http://codeigniter.com/user_guide/database/
 */
class CI_DB_mysql_forge extends CI_DB_forge {

	/**
	 * Create database
	 *
	 * @access	private
	 * @param	string	the database name
	 * @return	bool
	 */
	function _create_database($name)
	{
		return "CREATE DATABASE ".$name;
	}

	// --------------------------------------------------------------------

	/**
	 * Drop database
	 *
	 * @access	private
	 * @param	string	the database name
	 * @return	bool
	 */
	function _drop_database($name)
	{
		return "DROP DATABASE ".$name;
	}

	// --------------------------------------------------------------------

	/**
	 * Process Fields
	 *
	 * @access	private
	 * @param	mixed	the fields
	 * @return	string
	 */
	function _process_fields($fields)
	{
		$current_field_count = 0;
		$sql = '';

		foreach ($fields as $field=>$attributes)
		{
			// Numeric field names aren't allowed in databases, so if the key is
			// numeric, we know it was assigned by PHP and the developer manually
			// entered the field information, so we'll simply add it to the list
			if (is_numeric($field))
			{
				$sql .= "\n\t$attributes";
			}
			else
			{
				$attributes = array_change_key_case($attributes, CASE_UPPER);

				$sql .= "\n\t".$this->db->_protect_identifiers($field);

				if (array_key_exists('NAME', $attributes))
				{
					$sql .= ' '.$this->db->_protect_identifiers($attributes['NAME']).' ';
				}

				if (array_key_exists('TYPE', $attributes))
				{
					$sql .=  ' '.$attributes['TYPE'];

					if (array_key_exists('CONSTRAINT', $attributes))
					{
						switch ($attributes['TYPE'])
						{
							case 'decimal':
							case 'float':
							case 'numeric':
								$sql .= '('.implode(',', $attributes['CONSTRAINT']).')';
							break;

							case 'enum':
							case 'set':
								$sql .= '("'.implode('","', $attributes['CONSTRAINT']).'")';
							break;

							default:
								$sql .= '('.$attributes['CONSTRAINT'].')';
						}
					}
				}

				if (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE)
				{
					$sql .= ' UNSIGNED';
				}

				if (array_key_exists('DEFAULT', $attributes))
				{
					$sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\'';
				}

				if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE)
				{
					$sql .= ' NULL';
				}
				else
				{
					$sql .= ' NOT NULL';
				}

				if (array_key_exists('AUTO_INCREMENT', $attributes) && $attributes['AUTO_INCREMENT'] === TRUE)
				{
					$sql .= ' AUTO_INCREMENT';
				}
			}

			// don't add a comma on the end of the last field
			if (++$current_field_count < count($fields))
			{
				$sql .= ',';
			}
		}

		return $sql;
	}

	// --------------------------------------------------------------------

	/**
	 * Create Table
	 *
	 * @access	private
	 * @param	string	the table name
	 * @param	mixed	the fields
	 * @param	mixed	primary key(s)
	 * @param	mixed	key(s)
	 * @param	boolean	should 'IF NOT EXISTS' be added to the SQL
	 * @return	bool
	 */
	function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists)
	{
		$sql = 'CREATE TABLE ';

		if ($if_not_exists === TRUE)
		{
			$sql .= 'IF NOT EXISTS ';
		}

		$sql .= $this->db->_escape_identifiers($table)." (";

		$sql .= $this->_process_fields($fields);

		if (count($primary_keys) > 0)
		{
			$key_name = $this->db->_protect_identifiers(implode('_', $primary_keys));
			$primary_keys = $this->db->_protect_identifiers($primary_keys);
			$sql .= ",\n\tPRIMARY KEY ".$key_name." (" . implode(', ', $primary_keys) . ")";
		}

		if (is_array($keys) && count($keys) > 0)
		{
			foreach ($keys as $key)
			{
				if (is_array($key))
				{
					$key_name = $this->db->_protect_identifiers(implode('_', $key));
					$key = $this->db->_protect_identifiers($key);
				}
				else
				{
					$key_name = $this->db->_protect_identifiers($key);
					$key = array($key_name);
				}

				$sql .= ",\n\tKEY {$key_name} (" . implode(', ', $key) . ")";
			}
		}

		$sql .= "\n) DEFAULT CHARACTER SET {$this->db->char_set} COLLATE {$this->db->dbcollat};";

		return $sql;
	}

	// --------------------------------------------------------------------

	/**
	 * Drop Table
	 *
	 * @access	private
	 * @return	string
	 */
	function _drop_table($table)
	{
		return "DROP TABLE IF EXISTS ".$this->db->_escape_identifiers($table);
	}

	// --------------------------------------------------------------------

	/**
	 * Alter table query
	 *
	 * Generates a platform-specific query so that a table can be altered
	 * Called by add_column(), drop_column(), and column_alter(),
	 *
	 * @access	private
	 * @param	string	the ALTER type (ADD, DROP, CHANGE)
	 * @param	string	the column name
	 * @param	array	fields
	 * @param	string	the field after which we should add the new field
	 * @return	object
	 */
	function _alter_table($alter_type, $table, $fields, $after_field = '')
	{
		$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ";

		// DROP has everything it needs now.
		if ($alter_type == 'DROP')
		{
			return $sql.$this->db->_protect_identifiers($fields);
		}

		$sql .= $this->_process_fields($fields);

		if ($after_field != '')
		{
			$sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field);
		}

		return $sql;
	}

	// --------------------------------------------------------------------

	/**
	 * Rename a table
	 *
	 * Generates a platform-specific query so that a table can be renamed
	 *
	 * @access	private
	 * @param	string	the old table name
	 * @param	string	the new table name
	 * @return	string
	 */
	function _rename_table($table_name, $new_table_name)
	{
		$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table_name)." RENAME TO ".$this->db->_protect_identifiers($new_table_name);
		return $sql;
	}

}

/* End of file mysql_forge.php */
/* Location: ./system/database/drivers/mysql/mysql_forge.php */

20.1.1 by galaxyAbstractor * Added an simple admin panel to the codeviewer-cmssy stuff	1	<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
	2	/**
	3	* CodeIgniter
	4	*
	5	* An open source application development framework for PHP 5.1.6 or newer
	6	*
	7	* @package CodeIgniter
	8	* @author ExpressionEngine Dev Team
	9	* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
	10	* @license http://codeigniter.com/user_guide/license.html
	11	* @link http://codeigniter.com
	12	* @since Version 1.0
	13	* @filesource
	14	*/
	15
	16	// ------------------------------------------------------------------------
	17
	18	/**
	19	* MySQL Forge Class
	20	*
	21	* @category Database
	22	* @author ExpressionEngine Dev Team
	23	* @link http://codeigniter.com/user_guide/database/
	24	*/
	25	class CI_DB_mysql_forge extends CI_DB_forge {
	26
	27	/**
	28	* Create database
	29	*
	30	* @access private
	31	* @param string the database name
	32	* @return bool
	33	*/
	34	function _create_database($name)
	35	{
	36	return "CREATE DATABASE ".$name;
	37	}
	38
	39	// --------------------------------------------------------------------
	40
	41	/**
	42	* Drop database
	43	*
	44	* @access private
	45	* @param string the database name
	46	* @return bool
	47	*/
	48	function _drop_database($name)
	49	{
	50	return "DROP DATABASE ".$name;
	51	}
	52
	53	// --------------------------------------------------------------------
	54
	55	/**
	56	* Process Fields
	57	*
	58	* @access private
	59	* @param mixed the fields
	60	* @return string
	61	*/
	62	function _process_fields($fields)
	63	{
	64	$current_field_count = 0;
65	$sql = '';
66
67	foreach ($fields as $field=>$attributes)
68	{
69	// Numeric field names aren't allowed in databases, so if the key is
70	// numeric, we know it was assigned by PHP and the developer manually
71	// entered the field information, so we'll simply add it to the list
72	if (is_numeric($field))
73	{
74	$sql .= "\n\t$attributes";
75	}
76	else
77	{
78	$attributes = array_change_key_case($attributes, CASE_UPPER);
79
80	$sql .= "\n\t".$this->db->_protect_identifiers($field);
81
82	if (array_key_exists('NAME', $attributes))
83	{
84	$sql .= ' '.$this->db->_protect_identifiers($attributes['NAME']).' ';
85	}
86
87	if (array_key_exists('TYPE', $attributes))
88	{
89	$sql .= ' '.$attributes['TYPE'];
90
91	if (array_key_exists('CONSTRAINT', $attributes))
92	{
93	switch ($attributes['TYPE'])
94	{
95	case 'decimal':
96	case 'float':
97	case 'numeric':
98	$sql .= '('.implode(',', $attributes['CONSTRAINT']).')';
99	break;
100
101	case 'enum':
102	case 'set':
103	$sql .= '("'.implode('","', $attributes['CONSTRAINT']).'")';
104	break;
105
106	default:
107	$sql .= '('.$attributes['CONSTRAINT'].')';
108	}
109	}
110	}
111
112	if (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE)
113	{
114	$sql .= ' UNSIGNED';
115	}
116
117	if (array_key_exists('DEFAULT', $attributes))
118	{
119	$sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\'';
120	}
121
122	if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE)
123	{
124	$sql .= ' NULL';
125	}
126	else
127	{
128	$sql .= ' NOT NULL';
129	}
130
131	if (array_key_exists('AUTO_INCREMENT', $attributes) && $attributes['AUTO_INCREMENT'] === TRUE)
132	{
133	$sql .= ' AUTO_INCREMENT';
134	}
135	}
136
137	// don't add a comma on the end of the last field
138	if (++$current_field_count < count($fields))
139	{
140	$sql .= ',';
141	}
142	}
143
144	return $sql;
145	}
146
147	// --------------------------------------------------------------------
148
149	/**
150	* Create Table
151	*
152	* @access private
153	* @param string the table name
154	* @param mixed the fields
155	* @param mixed primary key(s)
156	* @param mixed key(s)
157	* @param boolean should 'IF NOT EXISTS' be added to the SQL
158	* @return bool
159	*/
160	function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists)
161	{
162	$sql = 'CREATE TABLE ';
163
164	if ($if_not_exists === TRUE)
165	{
166	$sql .= 'IF NOT EXISTS ';
167	}
168
169	$sql .= $this->db->_escape_identifiers($table)." (";
170
171	$sql .= $this->_process_fields($fields);
172
173	if (count($primary_keys) > 0)
174	{
175	$key_name = $this->db->_protect_identifiers(implode('_', $primary_keys));
176	$primary_keys = $this->db->_protect_identifiers($primary_keys);
177	$sql .= ",\n\tPRIMARY KEY ".$key_name." (" . implode(', ', $primary_keys) . ")";
178	}
179
180	if (is_array($keys) && count($keys) > 0)
181	{
182	foreach ($keys as $key)
183	{
184	if (is_array($key))
185	{
186	$key_name = $this->db->_protect_identifiers(implode('_', $key));
187	$key = $this->db->_protect_identifiers($key);
188	}
189	else
190	{
191	$key_name = $this->db->_protect_identifiers($key);
192	$key = array($key_name);
193	}
194
195	$sql .= ",\n\tKEY {$key_name} (" . implode(', ', $key) . ")";
196	}
197	}
198
199	$sql .= "\n) DEFAULT CHARACTER SET {$this->db->char_set} COLLATE {$this->db->dbcollat};";
200
201	return $sql;
202	}
203
204	// --------------------------------------------------------------------
205
206	/**
207	* Drop Table
208	*
209	* @access private
210	* @return string
211	*/
212	function _drop_table($table)
213	{
214	return "DROP TABLE IF EXISTS ".$this->db->_escape_identifiers($table);
215	}
216
217	// --------------------------------------------------------------------
218
219	/**
220	* Alter table query
221	*
222	* Generates a platform-specific query so that a table can be altered
223	* Called by add_column(), drop_column(), and column_alter(),
224	*
225	* @access private
226	* @param string the ALTER type (ADD, DROP, CHANGE)
227	* @param string the column name
228	* @param array fields
229	* @param string the field after which we should add the new field
230	* @return object
231	*/
232	function _alter_table($alter_type, $table, $fields, $after_field = '')
233	{
234	$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ";
235
236	// DROP has everything it needs now.
237	if ($alter_type == 'DROP')
238	{
239	return $sql.$this->db->_protect_identifiers($fields);
240	}
241
242	$sql .= $this->_process_fields($fields);
243
244	if ($after_field != '')
245	{
246	$sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field);
247	}
248
249	return $sql;
250	}
251
252	// --------------------------------------------------------------------
253
254	/**
255	* Rename a table
256	*
257	* Generates a platform-specific query so that a table can be renamed
258	*
259	* @access private
260	* @param string the old table name
261	* @param string the new table name
262	* @return string
263	*/
264	function _rename_table($table_name, $new_table_name)
265	{
266	$sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table_name)." RENAME TO ".$this->db->_protect_identifiers($new_table_name);
267	return $sql;
268	}
269
270	}
271
272	/* End of file mysql_forge.php */
273	/* Location: ./system/database/drivers/mysql/mysql_forge.php */