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      1 /*
      2  * Copyright 2001-2004 The Apache Software Foundation.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 
     18 package org.apache.commons.logging.impl;
     19 
     20 
     21 import java.io.Serializable;
     22 import org.apache.commons.logging.Log;
     23 
     24 
     25 /**
     26  * <p>Trivial implementation of Log that throws away all messages.  No
     27  * configurable system properties are supported.</p>
     28  *
     29  * @author <a href="mailto:sanders (at) apache.org">Scott Sanders</a>
     30  * @author Rod Waldhoff
     31  * @version $Id: NoOpLog.java 155426 2005-02-26 13:10:49Z dirkv $
     32  *
     33  * @deprecated Please use {@link java.net.URL#openConnection} instead.
     34  *     Please visit <a href="http://android-developers.blogspot.com/2011/09/androids-http-clients.html">this webpage</a>
     35  *     for further details.
     36  */
     37 @Deprecated
     38 public class NoOpLog implements Log, Serializable {
     39 
     40     /** Convenience constructor */
     41     public NoOpLog() { }
     42     /** Base constructor */
     43     public NoOpLog(String name) { }
     44     /** Do nothing */
     45     public void trace(Object message) { }
     46     /** Do nothing */
     47     public void trace(Object message, Throwable t) { }
     48     /** Do nothing */
     49     public void debug(Object message) { }
     50     /** Do nothing */
     51     public void debug(Object message, Throwable t) { }
     52     /** Do nothing */
     53     public void info(Object message) { }
     54     /** Do nothing */
     55     public void info(Object message, Throwable t) { }
     56     /** Do nothing */
     57     public void warn(Object message) { }
     58     /** Do nothing */
     59     public void warn(Object message, Throwable t) { }
     60     /** Do nothing */
     61     public void error(Object message) { }
     62     /** Do nothing */
     63     public void error(Object message, Throwable t) { }
     64     /** Do nothing */
     65     public void fatal(Object message) { }
     66     /** Do nothing */
     67     public void fatal(Object message, Throwable t) { }
     68 
     69     /**
     70      * Debug is never enabled.
     71      *
     72      * @return false
     73      */
     74     public final boolean isDebugEnabled() { return false; }
     75 
     76     /**
     77      * Error is never enabled.
     78      *
     79      * @return false
     80      */
     81     public final boolean isErrorEnabled() { return false; }
     82 
     83     /**
     84      * Fatal is never enabled.
     85      *
     86      * @return false
     87      */
     88     public final boolean isFatalEnabled() { return false; }
     89 
     90     /**
     91      * Info is never enabled.
     92      *
     93      * @return false
     94      */
     95     public final boolean isInfoEnabled() { return false; }
     96 
     97     /**
     98      * Trace is never enabled.
     99      *
    100      * @return false
    101      */
    102     public final boolean isTraceEnabled() { return false; }
    103 
    104     /**
    105      * Warn is never enabled.
    106      *
    107      * @return false
    108      */
    109     public final boolean isWarnEnabled() { return false; }
    110 
    111 }
    112