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diff --git a/src/3rd_party/apache-log4cxx-0.10.0/src/main/include/log4cxx/pattern/loggingeventpatternconverter.h b/src/3rd_party/apache-log4cxx-0.10.0/src/main/include/log4cxx/pattern/loggingeventpatternconverter.h
new file mode 100644
index 0000000000..7118808c15
--- /dev/null
+++ b/src/3rd_party/apache-log4cxx-0.10.0/src/main/include/log4cxx/pattern/loggingeventpatternconverter.h
@@ -0,0 +1,84 @@
+/*
+ * 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_PATTERN_LOGGING_EVENT_PATTERN_CONVERTER_H
+#define _LOG4CXX_PATTERN_LOGGING_EVENT_PATTERN_CONVERTER_H
+
+#include <log4cxx/pattern/patternconverter.h>
+#include <log4cxx/spi/loggingevent.h>
+
+namespace log4cxx {
+
+  namespace pattern {
+    /**
+    * LoggingEventPatternConverter is a base class for pattern converters
+    * that can format information from instances of LoggingEvent.
+    *
+    * 
+    *
+    * 
+    */
+class LOG4CXX_EXPORT LoggingEventPatternConverter : public PatternConverter {
+protected:
+  /**
+   * Constructs an instance of LoggingEventPatternConverter.
+   * @param name name of converter.
+   * @param style CSS style for output.
+   */
+  LoggingEventPatternConverter(
+    const LogString& name, const LogString& style);
+
+public:
+DECLARE_LOG4CXX_PATTERN(LoggingEventPatternConverter)
+BEGIN_LOG4CXX_CAST_MAP()
+     LOG4CXX_CAST_ENTRY(LoggingEventPatternConverter)
+     LOG4CXX_CAST_ENTRY_CHAIN(PatternConverter)
+END_LOG4CXX_CAST_MAP()
+
+  /**
+   * Formats an event into a string buffer.
+   * @param event event to format, may not be null.
+   * @param toAppendTo string buffer to which the formatted event will be appended.  May not be null.
+   * @param p pool for memory allocations needing during format.
+   */
+  virtual void format(
+    const log4cxx::spi::LoggingEventPtr& event,
+    LogString& toAppendTo,
+    log4cxx::helpers::Pool& p) const = 0;
+
+  void format(const log4cxx::helpers::ObjectPtr& obj,
+     LogString& toAppendTo,
+     log4cxx::helpers::Pool& p) const;
+
+  /**
+   * Normally pattern converters are not meant to handle Exceptions although
+   * few pattern converters might.
+   *
+   * By examining the return values for this method, the containing layout will
+   * determine whether it handles throwables or not.
+
+   * @return true if this PatternConverter handles throwables
+   */
+  virtual bool handlesThrowable() const;
+};
+
+LOG4CXX_PTR_DEF(LoggingEventPatternConverter);
+
+  }
+}
+
+#endif