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/phpbb/db/migration/ -> migration.php (source)

   1  <?php
   2  /**
   3  *
   4  * This file is part of the phpBB Forum Software package.
   5  *
   6  * @copyright (c) phpBB Limited <https://www.phpbb.com>
   7  * @license GNU General Public License, version 2 (GPL-2.0)
   8  *
   9  * For full copyright and license information, please see
  10  * the docs/CREDITS.txt file.
  11  *
  12  */
  13  
  14  namespace phpbb\db\migration;
  15  
  16  /**
  17  * Abstract base class for database migrations
  18  *
  19  * Each migration consists of a set of schema and data changes to be implemented
  20  * in a subclass. This class provides various utility methods to simplify editing
  21  * a phpBB.
  22  */
  23  abstract class migration implements migration_interface
  24  {
  25      /** @var \phpbb\config\config */
  26      protected $config;
  27  
  28      /** @var \phpbb\db\driver\driver_interface */
  29      protected $db;
  30  
  31      /** @var \phpbb\db\tools\tools_interface */
  32      protected $db_tools;
  33  
  34      /** @var string */
  35      protected $table_prefix;
  36  
  37      /** @var string */
  38      protected $phpbb_root_path;
  39  
  40      /** @var string */
  41      protected $php_ext;
  42  
  43      /** @var array Errors, if any occurred */
  44      protected $errors;
  45  
  46      /** @var array List of queries executed through $this->sql_query() */
  47      protected $queries = array();
  48  
  49      /**
  50      * Constructor
  51      *
  52      * @param \phpbb\config\config $config
  53      * @param \phpbb\db\driver\driver_interface $db
  54      * @param \phpbb\db\tools\tools_interface $db_tools
  55      * @param string $phpbb_root_path
  56      * @param string $php_ext
  57      * @param string $table_prefix
  58      */
  59  	public function __construct(\phpbb\config\config $config, \phpbb\db\driver\driver_interface $db, \phpbb\db\tools\tools_interface $db_tools, $phpbb_root_path, $php_ext, $table_prefix)
  60      {
  61          $this->config = $config;
  62          $this->db = $db;
  63          $this->db_tools = $db_tools;
  64          $this->table_prefix = $table_prefix;
  65  
  66          $this->phpbb_root_path = $phpbb_root_path;
  67          $this->php_ext = $php_ext;
  68  
  69          $this->errors = array();
  70      }
  71  
  72      /**
  73      * {@inheritdoc}
  74      */
  75  	static public function depends_on()
  76      {
  77          return array();
  78      }
  79  
  80      /**
  81      * {@inheritdoc}
  82      */
  83  	public function effectively_installed()
  84      {
  85          return false;
  86      }
  87  
  88      /**
  89      * {@inheritdoc}
  90      */
  91  	public function update_schema()
  92      {
  93          return array();
  94      }
  95  
  96      /**
  97      * {@inheritdoc}
  98      */
  99  	public function revert_schema()
 100      {
 101          return array();
 102      }
 103  
 104      /**
 105      * {@inheritdoc}
 106      */
 107  	public function update_data()
 108      {
 109          return array();
 110      }
 111  
 112      /**
 113      * {@inheritdoc}
 114      */
 115  	public function revert_data()
 116      {
 117          return array();
 118      }
 119  
 120      /**
 121      * Wrapper for running queries to generate user feedback on updates
 122      *
 123      * @param string $sql SQL query to run on the database
 124      * @return mixed Query result from db->sql_query()
 125      */
 126  	protected function sql_query($sql)
 127      {
 128          $this->queries[] = $sql;
 129  
 130          $this->db->sql_return_on_error(true);
 131  
 132          if ($sql === 'begin')
 133          {
 134              $result = $this->db->sql_transaction('begin');
 135          }
 136          else if ($sql === 'commit')
 137          {
 138              $result = $this->db->sql_transaction('commit');
 139          }
 140          else
 141          {
 142              $result = $this->db->sql_query($sql);
 143              if ($this->db->get_sql_error_triggered())
 144              {
 145                  $this->errors[] = array(
 146                      'sql'    => $this->db->get_sql_error_sql(),
 147                      'code'    => $this->db->get_sql_error_returned(),
 148                  );
 149              }
 150          }
 151  
 152          $this->db->sql_return_on_error(false);
 153  
 154          return $result;
 155      }
 156  
 157      /**
 158      * Get the list of queries run
 159      *
 160      * @return array
 161      */
 162  	public function get_queries()
 163      {
 164          return $this->queries;
 165      }
 166  }


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