includes/cachev.php

   1 <?php
   2 /*=====================================================================*\
   3 || ###################################################################
   4 || # ViewSVN [#]version[#]
   5 || # Copyright ©2002-[#]year[#] Iris Studios, Inc.
   6 || #
   7 || # This program is free software; you can redistribute it and/or modify
   8 || # it under the terms of the GNU General Public License as published by
   9 || # the Free Software Foundation; version [#]gpl[#] of the License.
  10 || #
  11 || # This program is distributed in the hope that it will be useful, but
  12 || # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13 || # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  14 || # more details.
  15 || #
  16 || # You should have received a copy of the GNU General Public License along
  17 || # with this program; if not, write to the Free Software Foundation, Inc.,
  18 || # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  19 || ###################################################################
  20 \*=====================================================================*/
  21
  22 /**
  23 * File container for cacheV class
  24 *
  25 * @package      ViewSVN
  26 */
  27
  28 /**
  29 * cacheV
  30 *
  31 * This class is responsible for interacting with a given cacheV table.
  32 * It controls rebuilding from scratch, updates, and querying the cache.
  33 *
  34 * @author               Iris Studios, Inc.
  35 * @copyright    Copyright ©2002 - [#]year[#], Iris Studios, Inc.
  36 * @version              $Revision$
  37 * @package              ViewSVN
  38 *
  39 */
  40 class cacheV
  41 {
  42         /**
  43         * The registry
  44         * @var  object
  45         */
  46         var $registry = null;
  47
  48         /**
  49         * cacheV hash
  50         * @var  string
  51         */
  52         var $hash;
  53
  54         /**
  55         * Record count - the number of records in cacheV
  56         * @var  integer
  57         */
  58         var $count;
  59
  60         /**
  61         * Memcache for all fetched revisions so we don't have to query-dupe
  62         * @var  array
  63         */
  64         var $memcache = array();
  65
  66         // ###################################################################
  67         /**
  68         * Constructor: initialies the registry
  69         */
  70         function cacheV()
  71         {
  72                 global $viewsvn;
  73                 $this->registry =& $viewsvn;
  74         }
  75
  76         // ###################################################################
  77         /**
  78         * Sets the hash so we know what table we're dealing with
  79         *
  80         * @access       public
  81         */
  82         function set_hash()
  83         {
  84                 $this->hash = md5($this->registry->repos->fetch_path($this->registry->paths->repos));
  85         }
  86
  87         // ###################################################################
  88         /**
  89         * Returns a specific log entry
  90         *
  91         * @access       public
  92         *
  93         * @param        integer Revision number
  94         *
  95         * @return       array   Complete revision/commit entry
  96         */
  97         function fetch_revision($revision)
  98         {
  99                 $revision = $this->registry->clean($revision, TYPE_UINT);
 100
 101                 if (!isset($this->memcache["$revision"]))
 102                 {
 103                         $this->memcache["$revision"] = $this->registry->db->query_first("SELECT * FROM {$this->hash} WHERE revision = $revision");
 104                 }
 105
 106                 return $this->memcache["$revision"];
 107         }
 108
 109         // ###################################################################
 110         /**
 111         * Checks to see if it's necessary to rebuild the cacheV table for the
 112         * current repository. This is done by making sure $count > 0. If not,
 113         * then rebuild() is run. This also checks against the cacheV table
 114         * to make sure that it's up-to-date against the root repository.
 115         *
 116         * @access       public
 117         */
 118         function exec_build()
 119         {
 120                 $result = $this->registry->db->query_first("SELECT MAX(revision) AS max FROM {$this->hash}");
 121                 $this->count = $result['max'];
 122
 123                 // time to go from the start
 124                 if ($this->count == 0)
 125                 {
 126                         $this->build(null);
 127                 }
 128                 else
 129                 {
 130                         // send an Xquery to SVN
 131                         $query = $this->registry->svn->svn('info --xml ' . $this->registry->repos->fetch_path($this->registry->paths->repos));
 132                         $query = implode("\n", $query);
 133
 134                         $tree = $this->registry->xml->parse($query);
 135
 136                         if ($tree['info']['entry']['revision'] != $this->count)
 137                         {
 138                                 $this->build($this->count);
 139                         }
 140                 }
 141         }
 142
 143         // ###################################################################
 144         /**
 145         * Builds the cacheV table. This can be used to build only part of the
 146         * cache or the entire thing, if the revision is set to NULL.
 147         *
 148         * @access       public
 149         *
 150         * @param        integer Lower (current) revision
 151         */
 152         function build($revision)
 153         {
 154                 $start = microtime();
 155
 156                 $output = $this->registry->svn->svn('log --xml -v ' . ($revision !== null ? '-r' . $revision . ':HEAD ' : '') . $this->registry->repos->fetch_path($this->registry->paths->repos));
 157                 $output = implode("\n", $output);
 158
 159                 $tree = $this->registry->xml->parse($output);
 160
 161                 foreach ($tree['log']['logentry'] AS $log)
 162                 {
 163                         $this->registry->xml->unify_node($log['paths']['path']);
 164
 165                         $inserts[] = "($log[revision], '{$log['author']['value']}', '{$log['date']['value']}', '" . $this->registry->escape($log['msg']['value']) . "', '" . $this->registry->escape(serialize($files)) . "')";
 166                 }
 167
 168                 $this->registry->db->query("
 169                         REPLACE INTO {$this->hash}
 170                                 (revision, author, dateline, message, files)
 171                         VALUES
 172                                 " . implode(",\n", $inserts)
 173                 );
 174
 175                 $this->registry->debug("TIME TO (RE)BUILD: " . $this->registry->funct->fetch_microtime_diff($start));
 176         }
 177 }
 178
 179 /*=====================================================================*\
 180 || ###################################################################
 181 || # $HeadURL$
 182 || # $Id$
 183 || ###################################################################
 184 \*=====================================================================*/
 185 ?>