1 //
2 // ========================================================================
3 // Copyright (c) 1995-2016 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 javax.websocket.OnError;
22
23 import org.eclipse.jetty.websocket.common.events.annotated.InvalidSignatureException;
24 import org.eclipse.jetty.websocket.jsr356.annotations.Param.Role;
25
26 /**
27 * Param handling for @{@link OnError} parameters.
28 */
29 public class JsrParamIdOnError extends JsrParamIdBase implements IJsrParamId
30 {
31 public static final IJsrParamId INSTANCE = new JsrParamIdOnError();
32
33 @Override
34 public boolean process(Param param, JsrCallable callable) throws InvalidSignatureException
35 {
36 if (super.process(param,callable))
37 {
38 // Found common roles
39 return true;
40 }
41
42 if (param.type.isAssignableFrom(Throwable.class))
43 {
44 param.bind(Role.ERROR_CAUSE);
45 return true;
46 }
47 return false;
48 }
49 }