Mercurial Hosting > luan
diff src/org/eclipse/jetty/util/MultiException.java @ 802:3428c60d7cfc
replace jetty jars with source
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Wed, 07 Sep 2016 21:15:48 -0600 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/org/eclipse/jetty/util/MultiException.java Wed Sep 07 21:15:48 2016 -0600 @@ -0,0 +1,185 @@ +// +// ======================================================================== +// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. +// ------------------------------------------------------------------------ +// All rights reserved. This program and the accompanying materials +// are made available under the terms of the Eclipse Public License v1.0 +// and Apache License v2.0 which accompanies this distribution. +// +// The Eclipse Public License is available at +// http://www.eclipse.org/legal/epl-v10.html +// +// The Apache License v2.0 is available at +// http://www.opensource.org/licenses/apache2.0.php +// +// You may elect to redistribute this code under either of these licenses. +// ======================================================================== +// + +package org.eclipse.jetty.util; +import java.io.PrintStream; +import java.io.PrintWriter; +import java.util.List; + + +/* ------------------------------------------------------------ */ +/** Wraps multiple exceptions. + * + * Allows multiple exceptions to be thrown as a single exception. + * + * + */ +@SuppressWarnings("serial") +public class MultiException extends Exception +{ + private Object nested; + + /* ------------------------------------------------------------ */ + public MultiException() + { + super("Multiple exceptions"); + } + + /* ------------------------------------------------------------ */ + public void add(Throwable e) + { + if (e instanceof MultiException) + { + MultiException me = (MultiException)e; + for (int i=0;i<LazyList.size(me.nested);i++) + nested=LazyList.add(nested,LazyList.get(me.nested,i)); + } + else + nested=LazyList.add(nested,e); + } + + /* ------------------------------------------------------------ */ + public int size() + { + return LazyList.size(nested); + } + + /* ------------------------------------------------------------ */ + public List<Throwable> getThrowables() + { + return LazyList.getList(nested); + } + + /* ------------------------------------------------------------ */ + public Throwable getThrowable(int i) + { + return (Throwable) LazyList.get(nested,i); + } + + /* ------------------------------------------------------------ */ + /** Throw a multiexception. + * If this multi exception is empty then no action is taken. If it + * contains a single exception that is thrown, otherwise the this + * multi exception is thrown. + * @exception Exception + */ + public void ifExceptionThrow() + throws Exception + { + switch (LazyList.size(nested)) + { + case 0: + break; + case 1: + Throwable th=(Throwable)LazyList.get(nested,0); + if (th instanceof Error) + throw (Error)th; + if (th instanceof Exception) + throw (Exception)th; + default: + throw this; + } + } + + /* ------------------------------------------------------------ */ + /** Throw a Runtime exception. + * If this multi exception is empty then no action is taken. If it + * contains a single error or runtime exception that is thrown, otherwise the this + * multi exception is thrown, wrapped in a runtime exception. + * @exception Error If this exception contains exactly 1 {@link Error} + * @exception RuntimeException If this exception contains 1 {@link Throwable} but it is not an error, + * or it contains more than 1 {@link Throwable} of any type. + */ + public void ifExceptionThrowRuntime() + throws Error + { + switch (LazyList.size(nested)) + { + case 0: + break; + case 1: + Throwable th=(Throwable)LazyList.get(nested,0); + if (th instanceof Error) + throw (Error)th; + else if (th instanceof RuntimeException) + throw (RuntimeException)th; + else + throw new RuntimeException(th); + default: + throw new RuntimeException(this); + } + } + + /* ------------------------------------------------------------ */ + /** Throw a multiexception. + * If this multi exception is empty then no action is taken. If it + * contains a any exceptions then this + * multi exception is thrown. + */ + public void ifExceptionThrowMulti() + throws MultiException + { + if (LazyList.size(nested)>0) + throw this; + } + + /* ------------------------------------------------------------ */ + @Override + public String toString() + { + if (LazyList.size(nested)>0) + return MultiException.class.getSimpleName()+ + LazyList.getList(nested); + return MultiException.class.getSimpleName()+"[]"; + } + + /* ------------------------------------------------------------ */ + @Override + public void printStackTrace() + { + super.printStackTrace(); + for (int i=0;i<LazyList.size(nested);i++) + ((Throwable)LazyList.get(nested,i)).printStackTrace(); + } + + + /* ------------------------------------------------------------------------------- */ + /** + * @see java.lang.Throwable#printStackTrace(java.io.PrintStream) + */ + @Override + public void printStackTrace(PrintStream out) + { + super.printStackTrace(out); + for (int i=0;i<LazyList.size(nested);i++) + ((Throwable)LazyList.get(nested,i)).printStackTrace(out); + } + + /* ------------------------------------------------------------------------------- */ + /** + * @see java.lang.Throwable#printStackTrace(java.io.PrintWriter) + */ + @Override + public void printStackTrace(PrintWriter out) + { + super.printStackTrace(out); + for (int i=0;i<LazyList.size(nested);i++) + ((Throwable)LazyList.get(nested,i)).printStackTrace(out); + } + +}