/* Copyright (c) 2001-2014, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.hsqldb.lib;
import java.util.
ArrayList;
import java.util.
List;
/**
* Allows additional messages to be appended.
*
* It often makes for better (and more efficient) design to add context
* details to an exception at intermediate points in the thread.
* This class makes it easy and efficient to catch and rethrow for that purpose.
*/
public class
AppendableException extends
Exception {
static final long
serialVersionUID = -1002629580611098803L;
public static final
String LS =
System.
getProperty("line.separator");
public
List<
String>
appendages = null;
public
String getMessage() {
String message = super.getMessage();
if (
appendages == null) {
return
message;
}
StringBuffer sb = new
StringBuffer();
if (
message != null) {
sb.
append(
message);
}
for (
String appendage :
appendages) {
if (
sb.
length() > 0) {
sb.
append(
LS);
}
sb.
append(
appendage);
}
return
sb.
toString();
}
public void
appendMessage(
String s) {
if (
appendages == null) {
appendages = new
ArrayList<
String>();
}
appendages.
add(
s);
}
public
AppendableException() {
// Intentionally empty
}
public
AppendableException(
String s) {
super(
s);
}
public
AppendableException(
Throwable cause) {
super(
cause);
}
public
AppendableException(
String string,
Throwable cause) {
super(
string,
cause);
}
}