Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.common / src / org / simantics / db / common / utils / ExceptionUtil.java

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/utils/ExceptionUtil.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/utils/ExceptionUtil.java
new file mode 100644 (file)
index 0000000..e022424
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/utils/ExceptionUtil.java
@@ -0,0 +1,69 @@
+/*******************************************************************************\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.db.common.utils;\r
+\r
+import java.lang.reflect.Constructor;\r
+import java.lang.reflect.InvocationTargetException;\r
+\r
+/**\r
+ * Utilities for exception propagation in the database client implementation.\r
+ * \r
+ * @author Tuukka Lehtonen\r
+ */\r
+public final class ExceptionUtil {\r
+\r
+    /**\r
+     * Re-wrap and rethrow a previously caught exception.\r
+     * \r
+     * <p>\r
+     * Attempts to create a new instance of the specified throwable itself with\r
+     * the specified Throwable as its cause.\r
+     * \r
+     * Should the construction of the new throwable fail, the method will log\r
+     * the error with {@link Logger} and just throw the originally\r
+     * specified throwable itself.\r
+     * \r
+     * @param <T> the concrete class of the throwable to be wrapped\r
+     * @param t the throwable to wrap\r
+     * @return never returns\r
+     * @throws T the new wrapping throwable or the original throwable if the\r
+     *         wrapping failed\r
+     */\r
+    public static <T extends Throwable> void wrapAndThrow(T t) throws T {\r
+        try {\r
+            @SuppressWarnings("unchecked")\r
+            Class<T> clazz = (Class<T>) t.getClass();\r
+            Constructor<T> ctor = clazz.getConstructor(Throwable.class);\r
+            T parent = ctor.newInstance(t);\r
+            throw parent;\r
+        } catch (InstantiationException e1) {\r
+            Logger.defaultLogError(e1);\r
+            throw t;\r
+        } catch (IllegalAccessException e1) {\r
+            Logger.defaultLogError(e1);\r
+            throw t;\r
+        } catch (IllegalArgumentException e1) {\r
+            Logger.defaultLogError(e1);\r
+            throw t;\r
+        } catch (InvocationTargetException e1) {\r
+            Logger.defaultLogError(e1);\r
+            throw t;\r
+        } catch (SecurityException e1) {\r
+            Logger.defaultLogError(e1);\r
+            throw t;\r
+        } catch (NoSuchMethodException e1) {\r
+            Logger.defaultLogError(e1);\r
+            throw t;\r
+        }\r
+    }\r
+\r
+}\r