-/*******************************************************************************\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
-package org.simantics.utils;\r
-\r
-import java.lang.reflect.ParameterizedType;\r
-import java.lang.reflect.Type;\r
-\r
-public class ReflectionUtils {\r
-\r
- /**\r
- * For a class <code>C extends PC<P></code>, where <code>PC</code> is\r
- * a class, not an interface, retrieves class <code>P</code>.\r
- * \r
- * @param clazz\r
- * @return\r
- */\r
- public static Class<?> getSingleParameterType(Class<?> clazz) {\r
-\r
- Type t = clazz.getGenericSuperclass();\r
- if(t instanceof Class<?>) {\r
- throw new UnsupportedOperationException("Missing parameter type for input class '" + clazz.getCanonicalName() + "'");\r
- } else if (t instanceof ParameterizedType) {\r
- ParameterizedType type = (ParameterizedType)t;\r
- Type argType = type.getActualTypeArguments()[0];\r
- if (argType instanceof Class<?>) {\r
- return (Class<?>) argType;\r
- } else if (argType instanceof ParameterizedType) {\r
- // This happens if the input class X<T>\r
- // parameter T is also parameterized.\r
- ParameterizedType pargType = (ParameterizedType) argType;\r
- return (Class<?>) pargType.getRawType();\r
- } else {\r
- throw new UnsupportedOperationException("Unsupported parameter type in class '" + clazz.getCanonicalName() + "': " + argType);\r
- }\r
- } else {\r
- throw new UnsupportedOperationException("Unknown case in class '" + clazz.getCanonicalName() + "'");\r
- }\r
-\r
- }\r
-\r
- /**\r
- * Works like {@link #getSingleParameterType(Class)} assuming the retrieved\r
- * parameter class extends <code>T</code>.\r
- * \r
- * @param clazz\r
- * @return\r
- */\r
- @SuppressWarnings("unchecked")\r
- public static <T> Class<T> getSingleParameterTypeExtending(Class<?> clazz) {\r
-\r
- Type t = clazz.getGenericSuperclass();\r
- if(t instanceof Class<?>) {\r
- throw new UnsupportedOperationException("Missing parameter type for input class '" + clazz.getCanonicalName() + "'");\r
- } else if (t instanceof ParameterizedType) {\r
- ParameterizedType type = (ParameterizedType)t;\r
- Type argType = type.getActualTypeArguments()[0];\r
- if (argType instanceof Class<?>) {\r
- return (Class<T>) argType;\r
- } else if (argType instanceof ParameterizedType) {\r
- // This happens if the input class X<T>\r
- // parameter T is also parameterized.\r
- ParameterizedType pargType = (ParameterizedType) argType;\r
- return (Class<T>) pargType.getRawType();\r
- } else {\r
- throw new UnsupportedOperationException("Unsupported parameter type in class '" + clazz.getCanonicalName() + "': " + argType);\r
- }\r
- } else {\r
- throw new UnsupportedOperationException("Unknown case in class '" + clazz.getCanonicalName() + "'");\r
- }\r
-\r
- }\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.utils;
+
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+
+public class ReflectionUtils {
+
+ /**
+ * For a class <code>C extends PC<P></code>, where <code>PC</code> is
+ * a class, not an interface, retrieves class <code>P</code>.
+ *
+ * @param clazz
+ * @return
+ */
+ public static Class<?> getSingleParameterType(Class<?> clazz) {
+
+ Type t = clazz.getGenericSuperclass();
+ if(t instanceof Class<?>) {
+ throw new UnsupportedOperationException("Missing parameter type for input class '" + clazz.getCanonicalName() + "'");
+ } else if (t instanceof ParameterizedType) {
+ ParameterizedType type = (ParameterizedType)t;
+ Type argType = type.getActualTypeArguments()[0];
+ if (argType instanceof Class<?>) {
+ return (Class<?>) argType;
+ } else if (argType instanceof ParameterizedType) {
+ // This happens if the input class X<T>
+ // parameter T is also parameterized.
+ ParameterizedType pargType = (ParameterizedType) argType;
+ return (Class<?>) pargType.getRawType();
+ } else {
+ throw new UnsupportedOperationException("Unsupported parameter type in class '" + clazz.getCanonicalName() + "': " + argType);
+ }
+ } else {
+ throw new UnsupportedOperationException("Unknown case in class '" + clazz.getCanonicalName() + "'");
+ }
+
+ }
+
+ /**
+ * Works like {@link #getSingleParameterType(Class)} assuming the retrieved
+ * parameter class extends <code>T</code>.
+ *
+ * @param clazz
+ * @return
+ */
+ @SuppressWarnings("unchecked")
+ public static <T> Class<T> getSingleParameterTypeExtending(Class<?> clazz) {
+
+ Type t = clazz.getGenericSuperclass();
+ if(t instanceof Class<?>) {
+ throw new UnsupportedOperationException("Missing parameter type for input class '" + clazz.getCanonicalName() + "'");
+ } else if (t instanceof ParameterizedType) {
+ ParameterizedType type = (ParameterizedType)t;
+ Type argType = type.getActualTypeArguments()[0];
+ if (argType instanceof Class<?>) {
+ return (Class<T>) argType;
+ } else if (argType instanceof ParameterizedType) {
+ // This happens if the input class X<T>
+ // parameter T is also parameterized.
+ ParameterizedType pargType = (ParameterizedType) argType;
+ return (Class<T>) pargType.getRawType();
+ } else {
+ throw new UnsupportedOperationException("Unsupported parameter type in class '" + clazz.getCanonicalName() + "': " + argType);
+ }
+ } else {
+ throw new UnsupportedOperationException("Unknown case in class '" + clazz.getCanonicalName() + "'");
+ }
+
+ }
+
+}