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diff --git a/inc/main/interfaces/resolver/commands/class_CommandResolver.php b/inc/main/interfaces/resolver/commands/class_CommandResolver.php
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+++ b/inc/main/interfaces/resolver/commands/class_CommandResolver.php
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+<?php
+/**
+ * An instance for command resolver classes
+ *
+ * @author		Roland Haeder <webmaster@shipsimu.org>
+ * @version		0.0.0
+ * @copyright	Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2015 Core Developer Team
+ * @license		GNU GPL 3.0 or any newer version
+ * @link		http://www.shipsimu.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+interface CommandResolver extends Resolver {
+	/**
+	 * Returns an command instance for a given request class
+	 *
+	 * @param	$requestInstance	An instance of a request class
+	 * @return	$commandInstance	An instance of the resolved command
+	 */
+	function resolveCommandByRequest (Requestable $requestInstance);
+
+	/**
+	 * Checks whether the given command is valid
+	 *
+	 * @param	$commandName	The default command we shall execute
+	 * @return	$isValid		Whether the given command is valid
+	 * @throws	EmptyVariableException	Thrown if given command is not set
+	 */
+	function isCommandValid ($commandName);
+}
+
+// [EOF]
+?>