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Statistical sampling library for use in virtdata libraries, based
on apache commons math 4
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.logging.log4j.core.impl;
import java.io.Serializable;
import org.apache.logging.log4j.core.pattern.PlainTextRenderer;
import org.apache.logging.log4j.core.pattern.TextRenderer;
/**
* Wraps and extends the concept of the JRE's final class {@link StackTraceElement} by adding more location information.
*
* Complements a StackTraceElement with:
*
*
* - exact: whether the class was obtained via {@link sun.reflect.Reflection#getCallerClass(int)}
* - location: a classpath element or a jar
* - version
*
*/
public final class ExtendedStackTraceElement implements Serializable {
private static final long serialVersionUID = -2171069569241280505L;
private final ExtendedClassInfo extraClassInfo;
private final StackTraceElement stackTraceElement;
public ExtendedStackTraceElement(final StackTraceElement stackTraceElement,
final ExtendedClassInfo extraClassInfo) {
this.stackTraceElement = stackTraceElement;
this.extraClassInfo = extraClassInfo;
}
/**
* Called from Jackson for XML and JSON IO.
*/
public ExtendedStackTraceElement(final String declaringClass, final String methodName, final String fileName,
final int lineNumber, final boolean exact, final String location, final String version) {
this(new StackTraceElement(declaringClass, methodName, fileName, lineNumber),
new ExtendedClassInfo(exact, location, version));
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (!(obj instanceof ExtendedStackTraceElement)) {
return false;
}
final ExtendedStackTraceElement other = (ExtendedStackTraceElement) obj;
if (this.extraClassInfo == null) {
if (other.extraClassInfo != null) {
return false;
}
} else if (!this.extraClassInfo.equals(other.extraClassInfo)) {
return false;
}
if (this.stackTraceElement == null) {
if (other.stackTraceElement != null) {
return false;
}
} else if (!this.stackTraceElement.equals(other.stackTraceElement)) {
return false;
}
return true;
}
public String getClassName() {
return this.stackTraceElement.getClassName();
}
public boolean getExact() {
return this.extraClassInfo.getExact();
}
public ExtendedClassInfo getExtraClassInfo() {
return this.extraClassInfo;
}
public String getFileName() {
return this.stackTraceElement.getFileName();
}
public int getLineNumber() {
return this.stackTraceElement.getLineNumber();
}
public String getLocation() {
return this.extraClassInfo.getLocation();
}
public String getMethodName() {
return this.stackTraceElement.getMethodName();
}
public StackTraceElement getStackTraceElement() {
return this.stackTraceElement;
}
public String getVersion() {
return this.extraClassInfo.getVersion();
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((this.extraClassInfo == null) ? 0 : this.extraClassInfo.hashCode());
result = prime * result + ((this.stackTraceElement == null) ? 0 : this.stackTraceElement.hashCode());
return result;
}
public boolean isNativeMethod() {
return this.stackTraceElement.isNativeMethod();
}
void renderOn(final StringBuilder output, final TextRenderer textRenderer) {
render(this.stackTraceElement, output, textRenderer);
textRenderer.render(" ", output, "Text");
this.extraClassInfo.renderOn(output, textRenderer);
}
private void render(final StackTraceElement stElement, final StringBuilder output, final TextRenderer textRenderer) {
final String fileName = stElement.getFileName();
final int lineNumber = stElement.getLineNumber();
textRenderer.render(getClassName(), output, "StackTraceElement.ClassName");
textRenderer.render(".", output, "StackTraceElement.ClassMethodSeparator");
textRenderer.render(stElement.getMethodName(), output, "StackTraceElement.MethodName");
if (stElement.isNativeMethod()) {
textRenderer.render("(Native Method)", output, "StackTraceElement.NativeMethod");
} else if (fileName != null && lineNumber >= 0) {
textRenderer.render("(", output, "StackTraceElement.Container");
textRenderer.render(fileName, output, "StackTraceElement.FileName");
textRenderer.render(":", output, "StackTraceElement.ContainerSeparator");
textRenderer.render(Integer.toString(lineNumber), output, "StackTraceElement.LineNumber");
textRenderer.render(")", output, "StackTraceElement.Container");
} else if (fileName != null) {
textRenderer.render("(", output, "StackTraceElement.Container");
textRenderer.render(fileName, output, "StackTraceElement.FileName");
textRenderer.render(")", output, "StackTraceElement.Container");
} else {
textRenderer.render("(", output, "StackTraceElement.Container");
textRenderer.render("Unknown Source", output, "StackTraceElement.UnknownSource");
textRenderer.render(")", output, "StackTraceElement.Container");
}
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
renderOn(sb, PlainTextRenderer.getInstance());
return sb.toString();
}
}