ENH: refs #255. Add component loader class (just like our ModelLoader)

Author: zachmullen

core/ComponentLoader.php

@@ -0,0 +1,69 @@
+<?php
+/*=========================================================================
+MIDAS Server
+Copyright (c) Kitware SAS. 20 rue de la Villette. All rights reserved.
+69328 Lyon, FRANCE.
+
+See Copyright.txt for details.
+This software is distributed WITHOUT ANY WARRANTY; without even
+the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+PURPOSE.  See the above copyright notices for more information.
+=========================================================================*/
+
+/**
+ * \class MIDAS_ComponentLoader
+ * \brief Create component object
+ */
+class MIDAS_ComponentLoader
+  {
+  /**
+   * \fn public loadComponents()
+   * \brief Loads components (array or string)
+   */
+  public function loadComponents($components, $module = '')
+    {
+    if(is_string($components))
+      {
+      $this->loadComponent($components, $module);
+      }
+    elseif(is_array($components))
+      {
+      foreach($components as $component)
+        {
+        $this->loadComponent($component, $module);
+        }
+      }
+    }
+
+  /**
+   * \fn public loadComponent()
+   * \brief Loads a component
+   */
+  public function loadComponent($component, $module = '')
+    {
+    $components = Zend_Registry::get('components');
+    if(!isset($components[$module.$component]))
+      {
+      if($module == '')
+        {
+        include_once BASE_PATH.'/core/controllers/components/'.$component.'Component.php';
+        $name = $component . 'Component';
+        }
+      else
+        {
+        include_once BASE_PATH.'/modules/'.$module.'/controllers/components/'.$component.'Component.php';
+        $name = ucfirst($module).'_'.$component.'Component';
+        }
+      if(class_exists($name))
+        {
+        $components[$module.$component] = new $name;
+        Zend_Registry::set('components', $components);
+        }
+      else
+        {
+        throw new Zend_Exception('Unable to load class '.$name);
+        }
+      }
+    return $components[$module.$component];
+    }
+  }

core/include.php

@@ -22,10 +22,11 @@
 require_once BASE_PATH . '/core/models/MIDASDatabasePdo.php';
 require_once BASE_PATH . '/core/models/MIDASDatabaseCassandra.php';
 require_once BASE_PATH . '/core/models/MIDASDatabaseMongo.php';
-require_once BASE_PATH . '/core/models//GlobalDao.php';
+require_once BASE_PATH . '/core/models/GlobalDao.php';
 
 include_once BASE_PATH . '/core/constant/datatype.php';
 require_once BASE_PATH . '/core/models/ModelLoader.php';
+require_once BASE_PATH . '/core/ComponentLoader.php';
 
 require_once BASE_PATH.'/core/AppController.php';
 require_once BASE_PATH.'/core/AppComponent.php';

core/models/ModelLoader.php

@@ -45,15 +45,15 @@ public function loadModel($model, $module = '')
     $models = Zend_Registry::get('models');
     if(!isset($models[$module.$model]))
       {
-      if($module == "")
+      if($module == '')
         {
-        include_once BASE_PATH."/core/models/" . $databaseType."/".$model.'Model.php';
+        include_once BASE_PATH.'/core/models/'.$databaseType.'/'.$model.'Model.php';
         $name = $model . 'Model';
         }
       else
         {
-        include_once BASE_PATH."/modules/".$module."/models/" . $databaseType."/".$model.'Model.php';
-        $name = ucfirst($module).'_'.$model . 'Model';
+        include_once BASE_PATH.'/modules/'.$module.'/models/'.$databaseType.'/'.$model.'Model.php';
+        $name = ucfirst($module).'_'.$model.'Model';
         }
       if(class_exists($name))
         {
@@ -62,7 +62,7 @@ public function loadModel($model, $module = '')
         }
       else
         {
-        throw new Zend_Exception('Unable to load class ' . $name);
+        throw new Zend_Exception('Unable to load class '.$name);
         }
       }
     return $models[$module.$model];