4 files changed, 56 insertions, 14 deletions

diff --git a/classes/CinisisDb.php b/classes/CinisisDb.php
index ae80a00..3dead27 100644
--- a/classes/CinisisDb.php
+++ b/classes/CinisisDb.php
@@ -28,16 +28,18 @@ class CinisisDb {
       // Check main configuration.
       $config = $this->parse($config);
 
+      // Set database implementation.
+      $this->implementation = $config['implementation'] .'Db';
+
       // Check database schema.
-      $schema = $this->parse('schemas/'. $config['database'] .'.yaml', 'schema');
+      $schema = $this->parse('schemas/'. $config['database'] .'.yaml', $this->implementation);
     } catch (Exception $e) {
-      echo '[cinisis] caught exception: ',  $e->getMessage(), "\n";
+      echo __CLASS__ .' caught exception: ',  $e->getMessage(), "\n";
       return FALSE;
     }
 
     // Setup database connection.
-    $this->implementation = $config['implementation'] .'Db';
-    $this->db             = new $this->implementation($schema);
+    $this->db = new $this->implementation($schema);
   }
 
   /**
@@ -47,11 +49,12 @@ class CinisisDb {
    *   Config file.
    *
    * @return
-   *   Array with configuration.
+   *   Array with configuration or FALSE if error.
    */
-  function load($file) {
+  public function load($file) {
     if (!file_exists($file)) {
       throw new Exception('Config '. $file .' not found.');
+      return FALSE;
     }
 
     // Load configuration.
@@ -64,20 +67,19 @@ class CinisisDb {
    * @param $config
    *   Config file or array with configuration.
    *
-   * @param $type
-   *   Configuration type (either 'cinisis' or 'schema').
+   * @param $class
+   *   Configuration class name.
    *
    * @return
    *   Array with configuration or FALSE on error.
    */
-  function parse($config, $type = 'cinisis') {
+  public function parse($config, $class = __CLASS__) {
     // Load configuration if needed.
     if (!is_array($config)) {
       $config = $this->load($config);
     }
 
     // Check configuration.
-    $class = ucfirst($type) .'Db';
     return call_user_func(array($class, 'check'), $config);
   }
 
@@ -99,6 +101,7 @@ class CinisisDb {
     // Check database configuration.
     if (!isset($config['database'])) {
       throw new Exception('No database set on configuration.');
+      return FALSE;
     }
 
     return $config;
diff --git a/classes/MaleteDb.php b/classes/MaleteDb.php
index b9d1350..24c6d35 100644
--- a/classes/MaleteDb.php
+++ b/classes/MaleteDb.php
@@ -88,6 +88,15 @@ class MaleteDb implements IsisDb {
   }
 
   /**
+   * Check configuration.
+   *
+   * @see IsisDb::check()
+   */  
+  public function check($schema, $section = NULL) {
+    return SchemaDb::check($schema, $section);
+  }
+
+  /**
    * Tag results of a db query.
    *
    * This function converts the keys of query result from field numbers
diff --git a/classes/PhpIsisDb.php b/classes/PhpIsisDb.php
index 82fe6db..65a7f38 100644
--- a/classes/PhpIsisDb.php
+++ b/classes/PhpIsisDb.php
@@ -79,6 +79,15 @@ class PhpIsisDb implements IsisDb {
   }
 
   /**
+   * Check configuration.
+   *
+   * @see IsisDb::check()
+   */  
+  public function check($schema, $section = NULL) {
+    return SchemaDb::check($schema, $section);
+  }
+
+  /**
    * Tag results of a db query.
    *
    * This function converts the keys of query result from field
diff --git a/classes/SchemaDb.php b/classes/SchemaDb.php
index 2756026..c00ae66 100644
--- a/classes/SchemaDb.php
+++ b/classes/SchemaDb.php
@@ -1,5 +1,9 @@
 <?php
 
+/**
+ * SchemaDb class with standard database procedures and
+ * configuration.
+ */
 class SchemaDb {
   /**
    * Return the required database config.
@@ -36,7 +40,7 @@ class SchemaDb {
   }
 
   /**
-   * Return an example schema.
+   * Return an example database schema.
    *
    * @see IsisDb::example()
    */    
@@ -65,11 +69,28 @@ class SchemaDb {
   }
 
   /**
-   * Check required fields.
+   * Recursively check for required fields in a database schema.
    *
-   * @todo
+   * @see IsisDb::check()
    */
-  function check($schema = NULL) {
+  function check($schema, $section = NULL) {
+    if ($section === NULL) {
+      $section = SchemaDb::required();
+    }
+
+    foreach ($section as $key => $value) {
+      if (!isset($schema[$key])) {
+        throw new Exception('Undefined required parameter '. $key .' on database configuration.');
+        return FALSE;
+      }
+
+      if (is_array($value)) {
+        if (SchemaDb::check($schema[$key], $section[$key]) == FALSE) {
+          return FALSE;
+        }
+      }
+    }
+
     return $schema;
   }
 }