Apache Log4j Core Implementation provides the functional components of the logging system. Users are free to create their own plugins and include them in the logging configuration. Apache Log4j Core is a required module to use Apache Log4j.

Bytecode (Java 8) for Apache Log4j Core Implementation is provided in a separate JAR file like log4j-core-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 Core Implementation 2.14.1 below.

⏎ org/apache/logging/log4j/core/config/builder/api/ComponentBuilder.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.core.config.builder.api;

import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.core.config.Configuration;
import org.apache.logging.log4j.core.util.Builder;

/**
 * Builds arbitrary components and is the base type for the provided components.
 * @param <T> The ComponentBuilder's own type for fluent APIs.
 * @since 2.4
 */
public interface ComponentBuilder<T extends ComponentBuilder<T>> extends Builder<Component> {

    /**
     * Adds a String attribute.
     * @param key The attribute key.
     * @param value The value of the attribute.
     * @return This ComponentBuilder.
     */
    T addAttribute(String key, String value);

    /**
     * Adds a logging Level attribute.
     * @param key The attribute key.
     * @param level The logging Level.
     * @return This ComponentBuilder.
     */
    T addAttribute(String key, Level level);

    /**
     * Adds an enumeration attribute.
     * @param key The attribute key.
     * @param value The enumeration.
     * @return This ComponentBuilder.
     */
    T addAttribute(String key, Enum<?> value);

    /**
     * Adds an integer attribute.
     * @param key The attribute key.
     * @param value The integer value.
     * @return This ComponentBuilder.
     */
    T addAttribute(String key, int value);

    /**
     * Adds a boolean attribute.
     * @param key The attribute key.
     * @param value The boolean value.
     * @return This ComponentBuilder.
     */
    T addAttribute(String key, boolean value);

    /**
     * Adds an Object attribute.
     * @param key The attribute key.
     * @param value The object value.
     * @return This ComponentBuilder.
     */
    T addAttribute(String key, Object value);

    /**
     * Adds a sub component.
     * @param builder The Assembler for the subcomponent with all of its attributes and sub-components set.
     * @return This ComponentBuilder (<em>not</em> the argument).
     */
    T addComponent(ComponentBuilder<?> builder);

    /**
     * Returns the name of the component, if any.
     * @return The components name or null if it doesn't have one.
     */
    String getName();

    /**
     * Retrieves the ConfigurationBuilder.
     * @return The ConfigurationBuilder.
     */
    ConfigurationBuilder<? extends Configuration> getBuilder();
}

⏎ org/apache/logging/log4j/core/config/builder/api/ComponentBuilder.java

Or download all of them as a single archive file:

File name: log4j-core-2.14.1-sources.jar
File size: 1281358 bytes
Release date: 2021-03-06
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