Add Proxy support.

From-SVN: r57635

1 files changed, 128 insertions, 0 deletions

diff --git a/libjava/java/lang/reflect/UndeclaredThrowableException.java b/libjava/java/lang/reflect/UndeclaredThrowableException.java
new file mode 100644
index 0000000..d959692
--- /dev/null
+++ b/libjava/java/lang/reflect/UndeclaredThrowableException.java
@@ -0,0 +1,128 @@
+/* UndeclaredThrowableException.java -- wraps an undeclared checked exception
+   thrown by a Proxy invocation handler
+   Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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 2, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package java.lang.reflect;
+
+/**
+ * This exception class is thrown by a {@link Proxy} instance if
+ * the {@link InvocationHandler#invoke(Object, Method, Object[]) invoke}
+ * method of that instance's InvocationHandler attempts to throw an
+ * exception that not declared by the throws clauses of all of the
+ * interface methods that the proxy instance is implementing.
+ *
+ * <p>When thrown by Proxy, this class will always wrap a checked
+ * exception, never {@link Error} or {@link RuntimeException},
+ * which are unchecked.
+ *
+ * @author Eric Blake <ebb9@email.byu.edu>
+ * @see Proxy
+ * @see InvocationHandler
+ * @since 1.3
+ * @status updated to 1.4
+ */
+public class UndeclaredThrowableException extends RuntimeException
+{
+  /**
+   * Compatible with JDK 1.3+.
+   */
+  private static final long serialVersionUID = 330127114055056639L;
+
+  /**
+   * The immutable exception that this wraps. This field is redundant
+   * with {@link Throwable#cause}, but is necessary for serial compatibility.
+   *
+   * @serial the chained exception
+   */
+  private final Throwable undeclaredThrowable;
+
+  /**
+   * Wraps the given checked exception into a RuntimeException, with no
+   * detail message.  {@link Throwable#initCause(Throwable)} will fail
+   * on this instance.
+   *
+   * @param cause the undeclared throwable that caused this exception,
+   *        may be null
+   */
+  public UndeclaredThrowableException(Throwable cause)
+  {
+    this(cause, null);
+  }
+
+  /**
+   * Wraps the given checked exception into a RuntimeException, with the
+   * specified detail message.  {@link Throwable#initCause(Throwable)} will
+   * fail on this instance.
+   *
+   * @param cause the undeclared throwable that caused this exception,
+   *        may be null
+   * @param message the message, may be null
+   */
+  public UndeclaredThrowableException(Throwable cause, String message)
+  {
+    super(message, cause);
+    undeclaredThrowable = cause;
+  }
+
+  /**
+   * Returns the cause of this exception.  If this exception was created
+   * by a {@link Proxy} instance, it will be a non-null checked
+   * exception.  This method pre-dates exception chaining, and is now
+   * simply a longer way to call <code>getCause()</code>.
+   *
+   * @return the cause of this exception, may be null
+   * @see #getCause()
+   */
+  public Throwable getUndeclaredThrowable()
+  {
+    return undeclaredThrowable;
+  }
+
+  /**
+   * Returns the cause of this exception.  If this exception was created
+   * by a {@link Proxy} instance, it will be a non-null checked
+   * exception.
+   *
+   * @return the cause of this exception, may be null
+   * @since 1.4
+   */
+  public Throwable getCause()
+  {
+    return undeclaredThrowable;
+  }
+}