X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Futils%2FExceptionUtil.java;fp=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Futils%2FExceptionUtil.java;h=e0224241813617268acdea3f9a64d1a58733a56f;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

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
index 000000000..e02242418
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/utils/ExceptionUtil.java
@@ -0,0 +1,69 @@
+/*******************************************************************************
+ * 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.db.common.utils;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+/**
+ * Utilities for exception propagation in the database client implementation.
+ * 
+ * @author Tuukka Lehtonen
+ */
+public final class ExceptionUtil {
+
+    /**
+     * Re-wrap and rethrow a previously caught exception.
+     * 
+     * <p>
+     * Attempts to create a new instance of the specified throwable itself with
+     * the specified Throwable as its cause.
+     * 
+     * Should the construction of the new throwable fail, the method will log
+     * the error with {@link Logger} and just throw the originally
+     * specified throwable itself.
+     * 
+     * @param <T> the concrete class of the throwable to be wrapped
+     * @param t the throwable to wrap
+     * @return never returns
+     * @throws T the new wrapping throwable or the original throwable if the
+     *         wrapping failed
+     */
+    public static <T extends Throwable> void wrapAndThrow(T t) throws T {
+        try {
+            @SuppressWarnings("unchecked")
+            Class<T> clazz = (Class<T>) t.getClass();
+            Constructor<T> ctor = clazz.getConstructor(Throwable.class);
+            T parent = ctor.newInstance(t);
+            throw parent;
+        } catch (InstantiationException e1) {
+            Logger.defaultLogError(e1);
+            throw t;
+        } catch (IllegalAccessException e1) {
+            Logger.defaultLogError(e1);
+            throw t;
+        } catch (IllegalArgumentException e1) {
+            Logger.defaultLogError(e1);
+            throw t;
+        } catch (InvocationTargetException e1) {
+            Logger.defaultLogError(e1);
+            throw t;
+        } catch (SecurityException e1) {
+            Logger.defaultLogError(e1);
+            throw t;
+        } catch (NoSuchMethodException e1) {
+            Logger.defaultLogError(e1);
+            throw t;
+        }
+    }
+
+}