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Source Code for Apache Log4j API
Apache Log4j API provides the interface that applications should code to and provides the adapter components required for implementers to create a logging implementation. Apache Log4j API is a required module to use Apache Log4j.
Bytecode (Java 8) for Apache Log4j API is provided in a separate JAR file like log4j-api-2.14.1.jar.
Source Code files for Apache Log4j API are provided in both binary packge like apache-log4j-2.14.1-bin.zip and source package like apache-log4j-2.14.1-src.zip. You can download them at Apache Log4j Website.
You can also browse Source Code files for Apache Log4j API 2.14.1 below.
✍: FYIcenter.com
⏎ org/apache/logging/log4j/message/SimpleMessage.java
/* * 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.message; import org.apache.logging.log4j.util.StringBuilderFormattable; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; /** * The simplest possible implementation of Message. It just returns the String given as the constructor argument. */ public class SimpleMessage implements Message, StringBuilderFormattable, CharSequence { private static final long serialVersionUID = -8398002534962715992L; private String message; private transient CharSequence charSequence; /** * Basic constructor. */ public SimpleMessage() { this(null); } /** * Constructor that includes the message. * @param message The String message. */ public SimpleMessage(final String message) { this.message = message; this.charSequence = message; } /** * Constructor that includes the message. * @param charSequence The CharSequence message. */ public SimpleMessage(final CharSequence charSequence) { // this.message = String.valueOf(charSequence); // postponed until getFormattedMessage this.charSequence = charSequence; } /** * Returns the message. * @return the message. */ @Override public String getFormattedMessage() { return message = message == null ? String.valueOf(charSequence) : message ; } @Override public void formatTo(final StringBuilder buffer) { buffer.append(message != null ? message : charSequence); } /** * Returns the message. * @return the message. */ @Override public String getFormat() { return message; } /** * Returns null since there are no parameters. * @return null. */ @Override public Object[] getParameters() { return null; } @Override public boolean equals(final Object o) { if (this == o) { return true; } if (o == null || getClass() != o.getClass()) { return false; } final SimpleMessage that = (SimpleMessage) o; return !(charSequence != null ? !charSequence.equals(that.charSequence) : that.charSequence != null); } @Override public int hashCode() { return charSequence != null ? charSequence.hashCode() : 0; } @Override public String toString() { return getFormattedMessage(); } /** * Always returns null. * * @return null */ @Override public Throwable getThrowable() { return null; } // CharSequence impl @Override public int length() { return charSequence == null ? 0 : charSequence.length(); } @Override public char charAt(final int index) { return charSequence.charAt(index); } @Override public CharSequence subSequence(final int start, final int end) { return charSequence.subSequence(start, end); } private void writeObject(final ObjectOutputStream out) throws IOException { getFormattedMessage(); // initialize the message:String field out.defaultWriteObject(); } private void readObject(final ObjectInputStream in) throws IOException, ClassNotFoundException { in.defaultReadObject(); charSequence = message; } }
⏎ org/apache/logging/log4j/message/SimpleMessage.java
Or download all of them as a single archive file:
File name: log4j-api-2.14.1-sources.jar File size: 264773 bytes Release date: 2021-03-06 Download
⇒ Source Code for Apache Log4j Core Implementation
⇐ Downloading Apache Log4j Binary Package
2015-11-17, 30221👍, 0💬
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