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'databene commons' is an open source Java library by Volker Bergmann.
It provides extensions to the Java core library by utility classes, abstract concepts
and concrete implementations.
/*
* Copyright (C) 2004-2014 Volker Bergmann ([email protected]).
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.databene.commons.debug;
import org.databene.commons.SystemInfo;
/**
* Wrapper class for resources that are monitored.
* It stores the monitored object itself and its allocation stack trace.
* Created: 14.04.2011 17:22:56
* @since 0.5.8
* @author Volker Bergmann
*/
public class MonitoredResource {
final Object resource;
final StackTraceElement[] registrationTrace;
public MonitoredResource(Object resource, StackTraceElement[] registrationTrace) {
this.resource = resource;
this.registrationTrace = registrationTrace;
}
private static String toString(StackTraceElement[] trace) {
StringBuilder builder = new StringBuilder();
boolean first = true;
for (StackTraceElement element : trace) {
appendTraceElement(element, first, builder);
first = false;
}
return builder.toString();
}
private static void appendTraceElement(StackTraceElement element, boolean first, StringBuilder builder) {
builder.append(SystemInfo.getLineSeparator());
builder.append("\t");
if (!first)
builder.append("at ");
builder.append(element.getClassName()).append('.').append(element.getMethodName());
if (element.getLineNumber() > 0)
builder.append(" (Line ").append(element.getLineNumber()).append(")");
}
@Override
public String toString() {
return "Monitored Object: " + resource.toString() + SystemInfo.getLineSeparator() +
"Registration stack:" +
toString(registrationTrace);
}
}