--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+/*\r
+ * Created on 16.12.2005\r
+ * \r
+ */\r
+package org.simantics.utils;\r
+\r
+\r
+/**\r
+ * DataContainer is used as return argument\r
+ * \r
+ * \r
+ * @author Toni Kalajainen \r
+ */\r
+public class ExtendableDataContainer<T> {\r
+\r
+ private T data;\r
+ \r
+ public ExtendableDataContainer() { \r
+ }\r
+ \r
+ public ExtendableDataContainer(T initialData) {\r
+ this.data = initialData;\r
+ }\r
+ \r
+ public boolean isEmpty() {\r
+ return data==null;\r
+ }\r
+ \r
+ public void set(T value) {\r
+ data = value;\r
+ }\r
+ \r
+ public T get() {\r
+ return data;\r
+ }\r
+ \r
+ public boolean hasContent() {\r
+ return data!=null;\r
+ }\r
+ \r
+ public static ExtendableDataContainer<Integer> getIntegerContainer() {\r
+ return new ExtendableDataContainer<Integer>();\r
+ }\r
+ \r
+ public static ExtendableDataContainer<Double> getDoubleContainer() {\r
+ return new ExtendableDataContainer<Double>();\r
+ }\r
+ \r
+ public static ExtendableDataContainer<String> getStringContainer() {\r
+ return new ExtendableDataContainer<String>();\r
+ }\r
+ \r
+}\r