ConfigObject: Extend ArrayDatasource

This makes it possible to use a ini file as repository!!!1
One thing is missing: Section names are currently ignored and should be
mapped to a virtual column.

refs #8826

library/Icinga/Application/Config.php

@@ -9,13 +9,15 @@
 use UnexpectedValueException;
 use Icinga\Util\File;
 use Icinga\Data\ConfigObject;
+use Icinga\Data\Selectable;
+use Icinga\Data\SimpleQuery;
 use Icinga\File\Ini\IniWriter;
 use Icinga\Exception\NotReadableError;
 
 /**
  * Container for INI like configuration and global registry of application and module related configuration.
  */
-class Config implements Countable, Iterator
+class Config implements Countable, Iterator, Selectable
 {
     /**
      * Configuration directory where ALL (application and module) configuration is located
@@ -85,14 +87,24 @@ public function setConfigFile($filepath)
         return $this;
     }
 
+    /**
+     * Provide a query for the internal config object
+     *
+     * @return  SimpleQuery
+     */
+    public function select()
+    {
+        return $this->config->select();
+    }
+
     /**
      * Return the count of available sections
      *
      * @return  int
      */
     public function count()
     {
-        return $this->config->count();
+        return $this->select()->count();
     }
 
     /**

library/Icinga/Data/ConfigObject.php

@@ -4,38 +4,30 @@
 namespace Icinga\Data;
 
 use Iterator;
-use Countable;
 use ArrayAccess;
-use LogicException;
+use Icinga\Data\DataArray\ArrayDatasource;
+use Icinga\Exception\ProgrammingError;
 
 /**
  * Container for configuration values
  */
-class ConfigObject implements Countable, Iterator, ArrayAccess
+class ConfigObject extends ArrayDatasource implements Iterator, ArrayAccess
 {
-    /**
-     * This config's data
-     *
-     * @var array
-     */
-    protected $data;
-
     /**
      * Create a new config
      *
      * @param   array   $data   The data to initialize the new config with
      */
     public function __construct(array $data = array())
     {
-        $this->data = array();
-
-        foreach ($data as $key => $value) {
+        // Convert all embedded arrays to ConfigObjects as well
+        foreach ($data as & $value) {
             if (is_array($value)) {
-                $this->data[$key] = new static($value);
-            } else {
-                $this->data[$key] = $value;
+                $value = new static($value);
             }
         }
+
+        parent::__construct($data);
     }
 
     /**
@@ -55,16 +47,6 @@ public function __clone()
         $this->data = $array;
     }
 
-    /**
-     * Return the count of available sections and properties
-     *
-     * @return  int
-     */
-    public function count()
-    {
-        return count($this->data);
-    }
-
     /**
      * Reset the current position of $this->data
      *
@@ -197,7 +179,7 @@ public function offsetGet($key)
     public function offsetSet($key, $value)
     {
         if ($key === null) {
-            throw new LogicException('Appending values without an explicit key is not supported');
+            throw new ProgrammingError('Appending values without an explicit key is not supported');
         }
 
         $this->$key = $value;