001: /*
002: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
003: *
004: * This file is part of Resin(R) Open Source
005: *
006: * Each copy or derived work must preserve the copyright notice and this
007: * notice unmodified.
008: *
009: * Resin Open Source is free software; you can redistribute it and/or modify
010: * it under the terms of the GNU General Public License as published by
011: * the Free Software Foundation; either version 2 of the License, or
012: * (at your option) any later version.
013: *
014: * Resin Open Source is distributed in the hope that it will be useful,
015: * but WITHOUT ANY WARRANTY; without even the implied warranty of
016: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017: * of NON-INFRINGEMENT. See the GNU General Public License for more
018: * details.
019: *
020: * You should have received a copy of the GNU General Public License
021: * along with Resin Open Source; if not, write to the
022: * Free SoftwareFoundation, Inc.
023: * 59 Temple Place, Suite 330
024: * Boston, MA 02111-1307 USA
025: *
026: * @author Scott Ferguson
027: */
028:
029: package com.caucho.ejb;
030:
031: import com.caucho.util.ExceptionWrapper;
032:
033: import javax.ejb.RemoveException;
034:
035: /**
036: * Wraps the actual exception with an EJB exception
037: */
038: public class RemoveExceptionWrapper extends javax.ejb.RemoveException
039: implements ExceptionWrapper {
040: private Throwable rootCause;
041:
042: /**
043: * Null constructors for Serializable
044: */
045: public RemoveExceptionWrapper() {
046: }
047:
048: /**
049: * Remove a basic RemoveExceptionWrapper with a message.
050: *
051: * @param msg the exception message.
052: */
053: public RemoveExceptionWrapper(String msg) {
054: super (msg);
055: }
056:
057: /**
058: * Remove a RemoveExceptionWrapper wrapping a root exception.
059: *
060: * @param rootCause the underlying wrapped exception.
061: */
062: public RemoveExceptionWrapper(Throwable rootCause) {
063: super (rootCause.getMessage());
064:
065: this .rootCause = rootCause;
066: }
067:
068: /**
069: * Wraps and exception with a remove exception wrapper.
070: */
071: public static RemoveException create(Throwable rootCause) {
072: while (rootCause instanceof ExceptionWrapper) {
073: ExceptionWrapper wrapper = (ExceptionWrapper) rootCause;
074:
075: if (wrapper.getRootCause() != null)
076: rootCause = wrapper.getRootCause();
077: else
078: break;
079: }
080:
081: if (rootCause instanceof RemoveException)
082: return (RemoveException) rootCause;
083: else
084: return new RemoveExceptionWrapper(rootCause);
085: }
086:
087: /**
088: * Returns the root exception if it exists.
089: *
090: * @return the underlying wrapped exception.
091: */
092: public Throwable getRootCause() {
093: return rootCause;
094: }
095:
096: /**
097: * Returns the appropriate exception message.
098: */
099: public String getMessage() {
100: if (rootCause != null)
101: return rootCause.getMessage();
102: else
103: return super .getMessage();
104: }
105:
106: /**
107: * Print the exception as a string.
108: */
109: public String toString() {
110: if (rootCause == null)
111: return super .toString();
112: else
113: return getClass().getName() + ": " + rootCause;
114: }
115: }
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