X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=lib%2Fschema.php;h=e5def514e31ddbc227ecb2a6afaec272c9c5d2dc;hb=05af14e1ca785b65723935486bb236fd6352758e;hp=6292a3d56b090a47114fc62c749d55832017b022;hpb=c1f1d712bd4d775b24ce99b44f469ec7dcd2342e;p=quix0rs-gnu-social.git

diff --git a/lib/schema.php b/lib/schema.php
index 6292a3d56b..e5def514e3 100644
--- a/lib/schema.php
+++ b/lib/schema.php
@@ -47,99 +47,47 @@ if (!defined('STATUSNET')) {
 
 class Schema
 {
-    static $_single = null;
+    static $_static = null;
     protected $conn = null;
 
     /**
      * Constructor. Only run once for singleton object.
      */
 
-    protected function __construct()
+    protected function __construct($conn = null)
     {
-        // XXX: there should be an easier way to do this.
-        $user = new User();
-
-        $this->conn = $user->getDatabaseConnection();
-
-        $user->free();
+        if (is_null($conn)) {
+            // XXX: there should be an easier way to do this.
+            $user = new User();
+            $conn = $user->getDatabaseConnection();
+            $user->free();
+            unset($user);
+        }
 
-        unset($user);
+        $this->conn = $conn;
     }
 
     /**
      * Main public entry point. Use this to get
-     * the singleton object.
+     * the schema object.
      *
-     * @return Schema the (single) Schema object
+     * @return Schema the Schema object for the connection
      */
 
-    static function get()
+    static function get($conn = null)
     {
-        if (empty(self::$_single)) {
-            self::$_single = new Schema();
-        }
-        return self::$_single;
-    }
-
-    /**
-     * Returns a TableDef object for the table
-     * in the schema with the given name.
-     *
-     * Throws an exception if the table is not found.
-     *
-     * @param string $name Name of the table to get
-     *
-     * @return TableDef tabledef for that table.
-     */
-
-    public function getTableDef($name)
-    {
-        if(common_config('db','type') == 'pgsql') {
-            $res = $this->conn->query("select column_default as default, is_nullable as Null, udt_name as Type, column_name AS Field from INFORMATION_SCHEMA.COLUMNS where table_name = '$name'");
-        }
-        else { 
-            $res = $this->conn->query('DESCRIBE ' . $name);
-        }
-
-        if (PEAR::isError($res)) {
-            throw new Exception($res->getMessage());
+        if (is_null($conn)) {
+            $key = 'default';
+        } else {
+            $key = md5(serialize($conn->dsn));
         }
-
-        $td = new TableDef();
-
-        $td->name    = $name;
-        $td->columns = array();
-
-        $row = array();
-
-        while ($res->fetchInto($row, DB_FETCHMODE_ASSOC)) {
-            //lower case the keys, because the php postgres driver is case insentive for column names
-	    foreach($row as $k=>$v) {
-               $row[strtolower($k)] = $row[$k];
-            }
-
-            $cd = new ColumnDef();
-
-            $cd->name = $row['field'];
-
-            $packed = $row['type'];
-
-            if (preg_match('/^(\w+)\((\d+)\)$/', $packed, $match)) {
-                $cd->type = $match[1];
-                $cd->size = $match[2];
-            } else {
-                $cd->type = $packed;
-            }
-
-            $cd->nullable = ($row['null'] == 'YES') ? true : false;
-            $cd->key      = $row['Key'];
-            $cd->default  = $row['default'];
-            $cd->extra    = $row['Extra'];
-
-            $td->columns[] = $cd;
+        
+        $type = common_config('db', 'type');
+        if (empty(self::$_static[$key])) {
+            $schemaClass = ucfirst($type).'Schema';
+            self::$_static[$key] = new $schemaClass($conn);
         }
-
-        return $td;
+        return self::$_static[$key];
     }
 
     /**
@@ -532,7 +480,7 @@ class Schema
         } else {
             $sql .= ($cd->nullable) ? "null " : "not null ";
         }
-        
+
         if (!empty($cd->auto_increment)) {
             $sql .= " auto_increment ";
         }
@@ -544,3 +492,9 @@ class Schema
         return $sql;
     }
 }
+
+class SchemaTableMissingException extends Exception
+{
+    // no-op
+}
+