--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/commons/core/checker/AbstractChecker.py	Tue Apr 30 14:33:21 2013 -0400
@@ -0,0 +1,61 @@
+# Copyright INRA (Institut National de la Recherche Agronomique)
+# http://www.inra.fr
+# http://urgi.versailles.inra.fr
+#
+# This software is governed by the CeCILL license under French law and
+# abiding by the rules of distribution of free software.  You can  use, 
+# modify and/ or redistribute the software under the terms of the CeCILL
+# license as circulated by CEA, CNRS and INRIA at the following URL
+# "http://www.cecill.info". 
+#
+# As a counterpart to the access to the source code and  rights to copy,
+# modify and redistribute granted by the license, users are provided only
+# with a limited warranty  and the software's author,  the holder of the
+# economic rights,  and the successive licensors  have only  limited
+# liability. 
+#
+# In this respect, the user's attention is drawn to the risks associated
+# with loading,  using,  modifying and/or developing or reproducing the
+# software by the user in light of its specific status of free software,
+# that may mean  that it is complicated to manipulate,  and  that  also
+# therefore means  that it is reserved for developers  and  experienced
+# professionals having in-depth computer knowledge. Users are therefore
+# encouraged to load and test the software's suitability as regards their
+# requirements in conditions enabling the security of their systems and/or 
+# data to be ensured and,  more generally, to use and operate it in the 
+# same conditions as regards security. 
+#
+# The fact that you are presently reading this means that you have had
+# knowledge of the CeCILL license and that you accept its terms.
+
+
+from commons.core.checker.IChecker import IChecker
+from commons.core.LoggerFactory import LoggerFactory
+
+
+## Enable a Logger in your Checker.
+#
+#  Subclasses of  AbstractChecker have a already a logger enabled (referenced by self._log attribute). Subclasses also already implements IChecker.
+#  All you have to do is to call __init__() method in your own constructor.
+class AbstractChecker( IChecker ):
+    
+    ## Constructor 
+    #
+    # @param logFileName name of log file where logger outputs
+    #
+    def __init__(self, logFileName):
+        self._log = LoggerFactory.createLogger(logFileName)
+        
+        
+    ## Set (change) default logger
+    #
+    # @param logger a new logger
+    # 
+    def setLogger(self, logger):
+        self._log = logger
+        
+        
+    ## Return the logger instance
+    #
+    def getLogger(self):
+        return self._log