001/* 002 * Copyright (c) 2007-2016 Concurrent, Inc. All Rights Reserved. 003 * 004 * Project and contact information: http://www.cascading.org/ 005 * 006 * This file is part of the Cascading project. 007 * 008 * Licensed under the Apache License, Version 2.0 (the "License"); 009 * you may not use this file except in compliance with the License. 010 * You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, software 015 * distributed under the License is distributed on an "AS IS" BASIS, 016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 017 * See the License for the specific language governing permissions and 018 * limitations under the License. 019 */ 020 021package cascading.util; 022 023/** 024 * 025 */ 026public interface ProcessLogger 027 { 028 ProcessLogger NULL = new ProcessLogger() 029 { 030 @Override 031 public boolean isInfoEnabled() 032 { 033 return false; 034 } 035 036 @Override 037 public boolean isDebugEnabled() 038 { 039 return false; 040 } 041 042 @Override 043 public void logInfo( String message, Object... arguments ) 044 { 045 046 } 047 048 @Override 049 public void logDebug( String message, Object... arguments ) 050 { 051 052 } 053 054 @Override 055 public void logWarn( String message ) 056 { 057 058 } 059 060 @Override 061 public void logWarn( String message, Object... arguments ) 062 { 063 064 } 065 066 @Override 067 public void logWarn( String message, Throwable throwable ) 068 { 069 070 } 071 072 @Override 073 public void logError( String message, Object... arguments ) 074 { 075 076 } 077 078 @Override 079 public void logError( String message, Throwable throwable ) 080 { 081 082 } 083 }; 084 085 boolean isInfoEnabled(); 086 087 boolean isDebugEnabled(); 088 089 void logInfo( String message, Object... arguments ); 090 091 void logDebug( String message, Object... arguments ); 092 093 void logWarn( String message ); 094 095 void logWarn( String message, Object... arguments ); 096 097 void logWarn( String message, Throwable throwable ); 098 099 void logError( String message, Object... arguments ); 100 101 void logError( String message, Throwable throwable ); 102 }