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diff --git a/src/3rdparty/clucene/src/CLucene/document/DateField.h b/src/3rdparty/clucene/src/CLucene/document/DateField.h
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+++ b/src/3rdparty/clucene/src/CLucene/document/DateField.h
@@ -0,0 +1,64 @@
+/*------------------------------------------------------------------------------
+* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team
+* 
+* Distributable under the terms of either the Apache License (Version 2.0) or 
+* the GNU Lesser General Public License, as specified in the COPYING file.
+------------------------------------------------------------------------------*/
+#ifndef _lucene_document_DateField_
+#define _lucene_document_DateField_
+
+#if defined(_LUCENE_PRAGMA_ONCE)
+# pragma once
+#endif
+
+CL_NS_DEF(document)
+
+//here are some constants used throughout clucene
+//make date strings long enough to last a millenium
+#define DATEFIELD_DATE_MAX _ILONGLONG(31536000000000) //1000L*365*24*60*60*1000
+
+#define DATEFIELD_DATE_LEN 9 ////Long.toString(DATEFIELD_DATE_MAX, Character.MAX_RADIX).length()
+
+/**
+* Provides support for converting dates to strings and vice-versa.
+* The strings are structured so that lexicographic sorting orders by date,
+* which makes them suitable for use as field values and search terms.
+*
+* <P>Note that this class saves dates with millisecond granularity,
+* which is bad for {@link RangeQuery} and {@link PrefixQuery}, as those
+* queries are expanded to a BooleanQuery with a potentially large number
+* of terms when searching. Thus you might want to use
+* {@link DateTools} instead.
+*
+* <P>
+* Note: dates before 1970 cannot be used, and therefore cannot be
+* indexed when using this class. See {@link DateTools} for an
+* alternative without such a limitation.
+*
+* @deprecated If you build a new index, use {@link DateTools} instead. This class is included for use with existing
+* indices and will be removed in a future release.
+*/
+class DateField :LUCENE_BASE {
+public:
+	~DateField();
+	
+	/**
+	* Converts a millisecond time to a string suitable for indexing.
+	* @throws RuntimeException if the time specified in the
+	* method argument is negative, that is, before 1970
+	*/
+	static TCHAR* timeToString(const int64_t time);
+	
+	/**
+	* Converts a millisecond time to a string suitable for indexing.
+	* @throws CL_ERR_IllegalArgument if the time specified in the
+	* method argument is negative, that is, before 1970
+	* @param str must be a character array DATEFIELD_DATE_LEN+1 or longer
+	*/
+	static void timeToString(const int64_t time, TCHAR* str);
+	
+	/** Converts a string-encoded date into a millisecond time. */
+	static int64_t stringToTime(const TCHAR* s);
+};
+CL_NS_END
+#endif