classes/ccache.php

   1 <?php
   2 class CCache {
   3         /* function ccache_zero($feed_id, $owner_uid) {
   4                 db_query("UPDATE ttrss_counters_cache SET
   5                         value = 0, updated = NOW() WHERE
   6                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
   7         } */
   8
   9         static function zero_all($owner_uid) {
  10                 db_query("UPDATE ttrss_counters_cache SET
  11                         value = 0 WHERE owner_uid = '$owner_uid'");
  12
  13                 db_query("UPDATE ttrss_cat_counters_cache SET
  14                         value = 0 WHERE owner_uid = '$owner_uid'");
  15         }
  16
  17         static function remove($feed_id, $owner_uid, $is_cat = false) {
  18
  19                 if (!$is_cat) {
  20                         $table = "ttrss_counters_cache";
  21                 } else {
  22                         $table = "ttrss_cat_counters_cache";
  23                 }
  24
  25                 db_query("DELETE FROM $table WHERE
  26                         feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
  27
  28         }
  29
  30         static function update_all($owner_uid) {
  31
  32                 if (get_pref('ENABLE_FEED_CATS', $owner_uid)) {
  33
  34                         $result = db_query("SELECT feed_id FROM ttrss_cat_counters_cache
  35                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
  36
  37                         while ($line = db_fetch_assoc($result)) {
  38                                 CCache::update($line["feed_id"], $owner_uid, true);
  39                         }
  40
  41                         /* We have to manually include category 0 */
  42
  43                         CCache::update(0, $owner_uid, true);
  44
  45                 } else {
  46                         $result = db_query("SELECT feed_id FROM ttrss_counters_cache
  47                                 WHERE feed_id > 0 AND owner_uid = '$owner_uid'");
  48
  49                         while ($line = db_fetch_assoc($result)) {
  50                                 print CCache::update($line["feed_id"], $owner_uid);
  51
  52                         }
  53
  54                 }
  55         }
  56
  57         static function find($feed_id, $owner_uid, $is_cat = false,
  58                                                  $no_update = false) {
  59
  60                 if (!is_numeric($feed_id)) return;
  61
  62                 if (!$is_cat) {
  63                         $table = "ttrss_counters_cache";
  64                         /* if ($feed_id > 0) {
  65                                 $tmp_result = db_query("SELECT owner_uid FROM ttrss_feeds
  66                                         WHERE id = '$feed_id'");
  67                                 $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
  68                         } */
  69                 } else {
  70                         $table = "ttrss_cat_counters_cache";
  71                 }
  72
  73                 if (DB_TYPE == "pgsql") {
  74                         $date_qpart = "updated > NOW() - INTERVAL '15 minutes'";
  75                 } else if (DB_TYPE == "mysql") {
  76                         $date_qpart = "updated > DATE_SUB(NOW(), INTERVAL 15 MINUTE)";
  77                 }
  78
  79                 $result = db_query("SELECT value FROM $table
  80                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id'
  81                         LIMIT 1");
  82
  83                 if (db_num_rows($result) == 1) {
  84                         return db_fetch_result($result, 0, "value");
  85                 } else {
  86                         if ($no_update) {
  87                                 return -1;
  88                         } else {
  89                                 return CCache::update($feed_id, $owner_uid, $is_cat);
  90                         }
  91                 }
  92
  93         }
  94
  95         static function update($feed_id, $owner_uid, $is_cat = false,
  96                                                    $update_pcat = true, $pcat_fast = false) {
  97
  98                 if (!is_numeric($feed_id)) return;
  99
 100                 /* if (!$is_cat && $feed_id > 0) {
 101                         $tmp_result = db_query("SELECT owner_uid FROM ttrss_feeds
 102                                 WHERE id = '$feed_id'");
 103                         $owner_uid = db_fetch_result($tmp_result, 0, "owner_uid");
 104                 } */
 105
 106                 $prev_unread = CCache::find($feed_id, $owner_uid, $is_cat, true);
 107
 108                 /* When updating a label, all we need to do is recalculate feed counters
 109                  * because labels are not cached */
 110
 111                 if ($feed_id < 0) {
 112                         CCache::update_all($owner_uid);
 113                         return;
 114                 }
 115
 116                 if (!$is_cat) {
 117                         $table = "ttrss_counters_cache";
 118                 } else {
 119                         $table = "ttrss_cat_counters_cache";
 120                 }
 121
 122                 if ($is_cat && $feed_id >= 0) {
 123                         if ($feed_id != 0) {
 124                                 $cat_qpart = "cat_id = '$feed_id'";
 125                         } else {
 126                                 $cat_qpart = "cat_id IS NULL";
 127                         }
 128
 129                         /* Recalculate counters for child feeds */
 130
 131                         if (!$pcat_fast) {
 132                                 $result = db_query("SELECT id FROM ttrss_feeds
 133                                                 WHERE owner_uid = '$owner_uid' AND $cat_qpart");
 134
 135                                 while ($line = db_fetch_assoc($result)) {
 136                                         CCache::update($line["id"], $owner_uid, false, false);
 137                                 }
 138                         }
 139
 140                         $result = db_query("SELECT SUM(value) AS sv
 141                                 FROM ttrss_counters_cache, ttrss_feeds
 142                                 WHERE id = feed_id AND $cat_qpart AND
 143                                 ttrss_counters_cache.owner_uid = $owner_uid AND
 144                                 ttrss_feeds.owner_uid = '$owner_uid'");
 145
 146                         $unread = (int) db_fetch_result($result, 0, "sv");
 147
 148                 } else {
 149                         $unread = (int) Feeds::getFeedArticles($feed_id, $is_cat, true, $owner_uid);
 150                 }
 151
 152                 db_query("BEGIN");
 153
 154                 $result = db_query("SELECT feed_id FROM $table
 155                         WHERE owner_uid = '$owner_uid' AND feed_id = '$feed_id' LIMIT 1");
 156
 157                 if (db_num_rows($result) == 1) {
 158                         db_query("UPDATE $table SET
 159                                 value = '$unread', updated = NOW() WHERE
 160                                 feed_id = '$feed_id' AND owner_uid = '$owner_uid'");
 161
 162                 } else {
 163                         db_query("INSERT INTO $table
 164                                 (feed_id, value, owner_uid, updated)
 165                                 VALUES
 166                                 ($feed_id, $unread, $owner_uid, NOW())");
 167                 }
 168
 169                 db_query("COMMIT");
 170
 171                 if ($feed_id > 0 && $prev_unread != $unread) {
 172
 173                         if (!$is_cat) {
 174
 175                                 /* Update parent category */
 176
 177                                 if ($update_pcat) {
 178
 179                                         $result = db_query("SELECT cat_id FROM ttrss_feeds
 180                                                 WHERE owner_uid = '$owner_uid' AND id = '$feed_id'");
 181
 182                                         $cat_id = (int) db_fetch_result($result, 0, "cat_id");
 183
 184                                         CCache::update($cat_id, $owner_uid, true, true, true);
 185
 186                                 }
 187                         }
 188                 } else if ($feed_id < 0) {
 189                         CCache::update_all($owner_uid);
 190                 }
 191
 192                 return $unread;
 193         }
 194
 195         /* function ccache_cleanup($owner_uid) {
 196
 197                 if (DB_TYPE == "pgsql") {
 198                         db_query("DELETE FROM ttrss_counters_cache AS c1 WHERE
 199                                 (SELECT count(*) FROM ttrss_counters_cache AS c2
 200                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
 201                                         AND owner_uid = '$owner_uid'");
 202
 203                         db_query("DELETE FROM ttrss_cat_counters_cache AS c1 WHERE
 204                                 (SELECT count(*) FROM ttrss_cat_counters_cache AS c2
 205                                         WHERE c1.feed_id = c2.feed_id AND c2.owner_uid = c1.owner_uid) > 1
 206                                         AND owner_uid = '$owner_uid'");
 207                 } else {
 208                         db_query("DELETE c1 FROM
 209                                         ttrss_counters_cache AS c1,
 210                                         ttrss_counters_cache AS c2
 211                                 WHERE
 212                                         c1.owner_uid = '$owner_uid' AND
 213                                         c1.owner_uid = c2.owner_uid AND
 214                                         c1.feed_id = c2.feed_id");
 215
 216                         db_query("DELETE c1 FROM
 217                                         ttrss_cat_counters_cache AS c1,
 218                                         ttrss_cat_counters_cache AS c2
 219                                 WHERE
 220                                         c1.owner_uid = '$owner_uid' AND
 221                                         c1.owner_uid = c2.owner_uid AND
 222                                         c1.feed_id = c2.feed_id");
 223
 224                 }
 225         } */
 226
 227
 228 }