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diff --git a/src/main/include/log4cxx/filter/propertyfilter.h b/src/main/include/log4cxx/filter/propertyfilter.h
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+++ b/src/main/include/log4cxx/filter/propertyfilter.h
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+/*
+ * 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.
+ */
+
+
+#ifndef _LOG4CXX_FILTER_PROPERTYFILTER_H
+#define _LOG4CXX_FILTER_PROPERTYFILTER_H
+
+#if defined(_MSC_VER)
+#pragma warning (push)
+#pragma warning ( disable: 4231 4251 4275 4786 )
+#endif
+
+
+#include <log4cxx/spi/filter.h>
+#include <map>
+
+namespace log4cxx
+{
+    namespace filter
+    {
+
+/**
+ * NOTE: This filter modifies logging events by adding properties to the event.
+ *
+ * The 'properties' param is converted to event properties, which are
+ * set on every event processed by the filter.
+ *
+ * Individual properties are only set if they do not already exist on the
+ * logging event (will not override existing properties).
+ *
+ * This class relies on the convention that property name/value pairs are
+ * equals-symbol delimited, and each name/value pair is comma-delimited
+ *
+ * Example properties param:
+ * somename=somevalue,anothername=anothervalue,thirdname=third value
+ *
+ * 
+ */
+        class LOG4CXX_EXPORT PropertyFilter : public log4cxx::spi::Filter
+        {
+            typedef std::map < LogString, LogString > PropertyMap;
+            PropertyMap* properties;
+            PropertyFilter(const PropertyFilter &);
+                  PropertyFilter & operator=(const PropertyFilter &);
+
+          public:
+                  DECLARE_LOG4CXX_OBJECT(PropertyFilter)
+                  BEGIN_LOG4CXX_CAST_MAP()
+                  LOG4CXX_CAST_ENTRY(log4cxx::spi::Filter)
+                  END_LOG4CXX_CAST_MAP()
+
+                  PropertyFilter();
+                  ~PropertyFilter();
+            void setProperties(const LogString & props);
+
+            FilterDecision decide(const spi::LoggingEventPtr & event) const;
+
+        };
+
+    }
+}
+
+#if defined(_MSC_VER)
+#pragma warning (pop)
+#endif
+
+#endif