Spring Framework example source code file (CommonsLogWriter.java)

This example Spring Framework source code file (CommonsLogWriter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

commonslogwriter, commonslogwriter, io, log, log, logger, stringbuffer, stringbuffer, writer, writer

The Spring Framework CommonsLogWriter.java source code

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * 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.springframework.util;

import java.io.Writer;

import org.apache.commons.logging.Log;

/**
 * <code>java.io.Writer adapter for a Commons Logging Log.
 *
 * @author Juergen Hoeller
 * @since 2.5.1
 */
public class CommonsLogWriter extends Writer {

	private final Log logger;

	private final StringBuffer buffer = new StringBuffer();


	/**
	 * Create a new CommonsLogWriter for the given Commons Logging logger.
	 * @param logger the Commons Logging logger to write to
	 */
	public CommonsLogWriter(Log logger) {
		Assert.notNull(logger, "Logger must not be null");
		this.logger = logger;
	}


	public void write(char ch) {
		if (ch == '\n' && this.buffer.length() > 0) {
			this.logger.debug(this.buffer.toString());
			this.buffer.setLength(0);
		}
		else {
			this.buffer.append((char) ch);
		}
	}

	public void write(char[] buffer, int offset, int length) {
		for (int i = 0; i < length; i++) {
			char ch = buffer[offset + i];
			if (ch == '\n' && this.buffer.length() > 0) {
				this.logger.debug(this.buffer.toString());
				this.buffer.setLength(0);
			}
			else {
				this.buffer.append((char) ch);
			}
		}
	}

	public void flush() {
	}

	public void close() {
	}

}