1/*
2 *  Licensed to the Apache Software Foundation (ASF) under one or more
3 *  contributor license agreements.  See the NOTICE file distributed with
4 *  this work for additional information regarding copyright ownership.
5 *  The ASF licenses this file to You under the Apache License, Version 2.0
6 *  (the "License"); you may not use this file except in compliance with
7 *  the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 */
17
18package org.apache.harmony.javax.security.sasl;
19
20import java.io.IOException;
21
22public class SaslException extends IOException {
23
24    private static final long serialVersionUID = 4579784287983423626L;
25
26    /**
27     * Serialized field for storing initial cause
28     */
29    private Throwable _exception;
30
31    public SaslException() {
32        super();
33    }
34
35    public SaslException(String detail) {
36        super(detail);
37    }
38
39    public SaslException(String detail, Throwable ex) {
40        super(detail);
41        if (ex != null) {
42            super.initCause(ex);
43            _exception = ex;
44        }
45    }
46
47    @Override
48    public Throwable getCause() {
49        return _exception;
50    }
51
52    @Override
53    public Throwable initCause(Throwable cause) {
54        super.initCause(cause);
55        _exception = cause;
56        return this;
57    }
58
59    @Override
60    public String toString() {
61        if (_exception == null) {
62            return super.toString();
63        }
64        StringBuilder sb = new StringBuilder(super.toString());
65        sb.append(", caused by: "); //$NON-NLS-1$
66        sb.append(_exception.toString());
67        return sb.toString();
68    }
69}
70