From: David ‘Bombe’ Roden <bombe@pterodactylus.net>
Date: Fri, 8 Apr 2011 12:56:26 +0000 (+0200)
Subject: Add abstract basic Command implementation with helper methods.
X-Git-Tag: 0.6.5^2~39^2~47
X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=commitdiff_plain;h=563f8b891e518a9b54396c8ef83aab9d51192c59

Add abstract basic Command implementation with helper methods.
---

diff --git a/src/main/java/net/pterodactylus/sone/freenet/fcp/AbstractCommand.java b/src/main/java/net/pterodactylus/sone/freenet/fcp/AbstractCommand.java
new file mode 100644
index 0000000..8c155e5
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sone/freenet/fcp/AbstractCommand.java
@@ -0,0 +1,55 @@
+/*
+ * Sone - AbstractCommand.java - Copyright © 2011 David Roden
+ *
+ * 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/>.
+ */
+
+package net.pterodactylus.sone.freenet.fcp;
+
+import freenet.node.FSParseException;
+import freenet.support.SimpleFieldSet;
+
+/**
+ * Basic implementation of a {@link Command} with various helper methods to
+ * simplify processing of input parameters.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public abstract class AbstractCommand implements Command {
+
+	//
+	// PROTECTED METHODS
+	//
+
+	/**
+	 * Returns a String value from the given simple field set.
+	 *
+	 * @param simpleFieldSet
+	 *            The simple field set to get the value from
+	 * @param key
+	 *            The key of the value
+	 * @return The String value
+	 * @throws FcpException
+	 *             if there is no value for the given key in the simple field
+	 *             set, or the value can not be converted to a String
+	 */
+	protected String getString(SimpleFieldSet simpleFieldSet, String key) throws FcpException {
+		try {
+			return simpleFieldSet.getString(key);
+		} catch (FSParseException fspe1) {
+			throw new FcpException("Could not get parameter “" + key + "” as String.", fspe1);
+		}
+	}
+
+}