1 //
2 // ========================================================================
3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19 package org.eclipse.jetty.websocket.jsr356.annotations;
20
21 import org.eclipse.jetty.websocket.common.events.annotated.InvalidSignatureException;
22 import org.eclipse.jetty.websocket.jsr356.annotations.Param.Role;
23
24 /**
25 * Param handling for @{@link OnError} parameters.
26 */
27 public class JsrParamIdOnError extends JsrParamIdBase implements IJsrParamId
28 {
29 public static final IJsrParamId INSTANCE = new JsrParamIdOnError();
30
31 @Override
32 public boolean process(Param param, JsrCallable callable) throws InvalidSignatureException
33 {
34 if (super.process(param,callable))
35 {
36 // Found common roles
37 return true;
38 }
39
40 if (param.type.isAssignableFrom(Throwable.class))
41 {
42 param.bind(Role.ERROR_CAUSE);
43 return true;
44 }
45 return false;
46 }
47 }