/*
* (c) Copyright 2009 by Volker Bergmann. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, is permitted under the terms of the
* GNU General Public License (GPL).
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
* REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
* HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER 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.databene.task;
import org.databene.commons.MessageHolder;
import org.databene.commons.StringUtil;
/**
* Exception which indicates that a required Task is unavailable.<br/><br/>
* Created: 20.10.2009 10:07:05
* @since 0.6.0
* @author Volker Bergmann
*/
public class TaskUnavailableException extends TaskException {
private static final long serialVersionUID = -2073389311048962081L;
private final Task task;
private final long requiredCount;
private final long actualCount;
public TaskUnavailableException(Task task, long requiredCount, long actualCount) {
super(renderMessage(task, requiredCount, actualCount));
this.task = task;
this.requiredCount = requiredCount;
this.actualCount = actualCount;
}
private static String renderMessage(Task task, long requiredCount, long actualCount) {
StringBuilder builder = new StringBuilder("Task ").append(task);
if (actualCount == 0)
builder.append(" not available");
else
builder.append(" could be executed only ").append(actualCount)
.append(" times, required minimum: ").append(requiredCount);
if (task instanceof MessageHolder) {
String message = ((MessageHolder) task).getMessage();
if (!StringUtil.isEmpty(message))
builder.append(". ").append(message);
}
return builder.toString();
}
public long getRequiredCount() {
return requiredCount;
}
public long getActualCount() {
return actualCount;
}
public Task getTask() {
return task;
}
}