Centralize some of the database function (linked to the normalized search). re #48, #49

author.php

@@ -39,7 +39,7 @@ class Author extends Base {
     }
 
     public static function getCount() {
-        $nAuthors = parent::getDb ()->query('select count(*) from authors')->fetchColumn();
+        $nAuthors = parent::executeQuerySingle ('select count(*) from authors');
         $entry = new Entry (localize("authors.title"), self::ALL_AUTHORS_ID,
             str_format (localize("authors.alphabetical", $nAuthors), $nAuthors), "text",
             array ( new LinkNavigation ("?page=".parent::PAGE_ALL_AUTHORS)));

base.php

@@ -1248,6 +1248,10 @@ abstract class Base
         self::$db = NULL;
     }
 
+    public static function executeQuerySingle ($query, $database = NULL) {
+        return self::getDb ($database)->query($query)->fetchColumn();
+    }
+
     public static function executeQuery($query, $columns, $filter, $params, $n, $database = NULL, $numberPerPage = NULL) {
         $totalResult = -1;
 

book.php

@@ -428,13 +428,12 @@ class Book extends Base {
     }
 
     public static function getBookCount($database = NULL) {
-        $nBooks = parent::getDb ($database)->query('select count(*) from books')->fetchColumn();
-        return $nBooks;
+        return parent::executeQuerySingle ('select count(*) from books', $database);
     }
 
     public static function getCount() {
         global $config;
-        $nBooks = parent::getDb ()->query('select count(*) from books')->fetchColumn();
+        $nBooks = parent::executeQuerySingle ('select count(*) from books');
         $result = array();
         $entry = new Entry (localize ("allbooks.title"),
                           self::ALL_BOOKS_ID,

language.php

@@ -36,7 +36,7 @@ class language extends Base {
     }
 
     public static function getCount() {
-        $nLanguages = parent::getDb ()->query('select count(*) from languages')->fetchColumn();
+        $nLanguages = parent::executeQuerySingle ('select count(*) from languages');
         if ($nLanguages == 0) return NULL;
         $entry = new Entry (localize("languages.title"), self::ALL_LANGUAGES_ID,
             str_format (localize("languages.alphabetical", $nLanguages), $nLanguages), "text",

publisher.php

@@ -28,7 +28,7 @@ class Publisher extends Base {
     }
 
     public static function getCount() {
-        $nPublishers = parent::getDb ()->query('select count(*) from publishers')->fetchColumn();
+        $nPublishers = parent::executeQuerySingle ('select count(*) from publishers');
         if ($nPublishers == 0) return NULL;
         $entry = new Entry (localize("publishers.title"), self::ALL_PUBLISHERS_ID,
             str_format (localize("publishers.alphabetical", $nPublishers), $nPublishers), "text",

rating.php

@@ -30,7 +30,7 @@ class Rating extends Base {
     }
 
     public static function getCount() {
-        $nRatings = parent::getDb ()->query('select count(*) from ratings')->fetchColumn();
+        $nRatings = parent::executeQuerySingle ('select count(*) from ratings');
         $entry = new Entry (localize("ratings.title"), self::ALL_RATING_ID,
             str_format (localize("ratings", $nRatings), $nRatings), "text",
             array ( new LinkNavigation ("?page=".parent::PAGE_ALL_RATINGS)));

serie.php

@@ -28,7 +28,7 @@ class Serie extends Base {
     }
 
     public static function getCount() {
-        $nSeries = parent::getDb ()->query('select count(*) from series')->fetchColumn();
+        $nSeries = parent::executeQuerySingle ('select count(*) from series');
         if ($nSeries == 0) return NULL;
         $entry = new Entry (localize("series.title"), self::ALL_SERIES_ID,
             str_format (localize("series.alphabetical", $nSeries), $nSeries), "text",

tag.php

@@ -28,7 +28,7 @@ class tag extends Base {
     }
 
     public static function getCount() {
-        $nTags = parent::getDb ()->query('select count(*) from tags')->fetchColumn();
+        $nTags = parent::executeQuerySingle ('select count(*) from tags');
         if ($nTags == 0) return NULL;
         $entry = new Entry (localize("tags.title"), self::ALL_TAGS_ID,
             str_format (localize("tags.alphabetical", $nTags), $nTags), "text",