1 files changed, 154 insertions, 0 deletions
diff --git a/src/SemanticScuttle/Service/Factory.php b/src/SemanticScuttle/Service/Factory.php
new file mode 100644
index 0000000..b661cdb
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+++ b/src/SemanticScuttle/Service/Factory.php
@@ -0,0 +1,154 @@
+<?php
+/**
+ * SemanticScuttle - your social bookmark manager.
+ *
+ * PHP version 5.
+ *
+ * @category Bookmarking
+ * @package  SemanticScuttle
+ * @author   Benjamin Huynh-Kim-Bang <mensonge@users.sourceforge.net>
+ * @author   Christian Weiske <cweiske@cweiske.de>
+ * @author   Eric Dane <ericdane@users.sourceforge.net>
+ * @license  GPL http://www.gnu.org/licenses/gpl.html
+ * @link     http://sourceforge.net/projects/semanticscuttle
+ */
+
+/**
+ * Connect to the database and build services.
+ *
+ * @category Bookmarking
+ * @package  SemanticScuttle
+ * @author   Benjamin Huynh-Kim-Bang <mensonge@users.sourceforge.net>
+ * @author   Christian Weiske <cweiske@cweiske.de>
+ * @author   Eric Dane <ericdane@users.sourceforge.net>
+ * @license  GPL http://www.gnu.org/licenses/gpl.html
+ * @link     http://sourceforge.net/projects/semanticscuttle
+ */
+class SemanticScuttle_Service_Factory
+{
+    /**
+     * Array of service instances.
+     * Key is service name (i.e. "Bookmark")
+     *
+     * @var array
+     */
+    protected static $instances = array();
+
+    /**
+     * Database connection
+     *
+     * @var sql_qb
+     */
+    protected static $db = null;
+
+    /**
+     * Array of service names -> new service class
+     * in case you want to overwrite the services.
+     *
+     * Key is the old service name (i.e. "Bookmark"),
+     * value the new class name, e.g.
+     * "My_Cool_Own_BookmarkService"
+     *
+     * @var array
+     */
+    public static $serviceoverrides = array();
+
+
+
+    /**
+     * Returns the service for the given name.
+     *
+     * @param string $name Service name (i.e. "Bookmark")
+     *
+     * @return SemanticScuttle_Service Service object
+     */
+    public static function get($name)
+    {
+        self::loadDb();
+        self::loadService($name);
+        return self::$instances[$name];
+    }
+
+
+
+    /**
+     * Loads service with the given name into
+     * self::$instances[$name].
+     *
+     * @param string $name Service name (i.e. 'Bookmark')
+     *
+     * @return void
+     */
+    protected static function loadService($name)
+    {
+        if (isset(self::$instances[$name])) {
+            return;
+        }
+
+        if (isset(self::$serviceoverrides[$name])) {
+            $class = self::$serviceoverrides[$name];
+        } else {
+            $class = 'SemanticScuttle_Service_' . $name;
+        }
+
+        if (!class_exists($class)) {
+            //PEAR classname to filename rule
+            $file = str_replace('_', '/', $class) . '.php';
+            include_once $file;
+        }
+
+        self::$instances[$name] = call_user_func(
+            array($class, 'getInstance'),
+            self::$db
+        );
+    }
+
+
+
+    /**
+     * Loads self::$db if it is not loaded already.
+     * Dies if the connection could not be established.
+     *
+     * @return void
+     */
+    protected static function loadDb()
+    {
+        global $dbhost, $dbuser, $dbpass, $dbname,
+            $dbport, $dbpersist, $dbtype, $dbneedssetnames;
+
+        if (self::$db !== null) {
+            return;
+        }
+        include_once 'SemanticScuttle/db/'. $dbtype .'.php';
+        $db = new sql_db();
+        $db->sql_connect(
+            $dbhost, $dbuser, $dbpass, $dbname, $dbport, $dbpersist
+        );
+        if (!$db->db_connect_id) {
+            message_die(
+                CRITICAL_ERROR,
+                'Could not connect to the database',
+                self::$db
+            );
+        }
+
+        $dbneedssetnames && $db->sql_query('SET NAMES UTF8');
+
+        self::$db = $db;
+    }
+
+
+
+    /**
+     * Returns sql database object
+     *
+     * @return sql_db Database instance
+     */
+    public static function getDb()
+    {
+        self::loadDb();
+        return self::$db;
+    }
+
+}
+?>