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diff --git a/mysql/mysql/service_mysql_string.h b/mysql/mysql/service_mysql_string.h
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+/* Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+/* This service provides functions to parse mysql String */
+
+#ifndef MYSQL_SERVICE_MYSQL_STRING_INCLUDED
+#define MYSQL_SERVICE_MYSQL_STRING_INCLUDED
+
+#ifndef MYSQL_ABI_CHECK
+#include <stdlib.h>
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void *mysql_string_iterator_handle;
+typedef void *mysql_string_handle;
+
+extern struct mysql_string_service_st {
+  int (*mysql_string_convert_to_char_ptr_type)
+       (mysql_string_handle, const char *, char *, unsigned int, int *);
+  mysql_string_iterator_handle (*mysql_string_get_iterator_type)
+                                (mysql_string_handle);
+  int (*mysql_string_iterator_next_type)(mysql_string_iterator_handle);
+  int (*mysql_string_iterator_isupper_type)(mysql_string_iterator_handle);
+  int (*mysql_string_iterator_islower_type)(mysql_string_iterator_handle);
+  int (*mysql_string_iterator_isdigit_type)(mysql_string_iterator_handle);
+  mysql_string_handle (*mysql_string_to_lowercase_type)(mysql_string_handle);
+  void (*mysql_string_free_type)(mysql_string_handle);
+  void (*mysql_string_iterator_free_type)(mysql_string_iterator_handle);
+} *mysql_string_service;
+
+#ifdef MYSQL_DYNAMIC_PLUGIN
+
+#define mysql_string_convert_to_char_ptr(string_handle, charset_name, \
+                                         buffer, buffer_size, error) \
+        mysql_string_service->mysql_string_convert_to_char_ptr_type \
+                              (string_handle, charset_name, buffer, \
+                               buffer_size, error)
+
+#define mysql_string_get_iterator(string_handle) \
+        mysql_string_service->mysql_string_get_iterator_type(string_handle)
+
+#define mysql_string_iterator_next(iterator_handle) \
+        mysql_string_service->mysql_string_iterator_next_type(iterator_handle)
+
+#define mysql_string_iterator_isupper(iterator_handle) \
+        mysql_string_service->mysql_string_iterator_isupper_type \
+                                     (iterator_handle)
+
+#define mysql_string_iterator_islower(iterator_handle) \
+        mysql_string_service->mysql_string_iterator_islower_type \
+                                     (iterator_handle)
+
+#define mysql_string_iterator_isdigit(iterator_handle) \
+        mysql_string_service->mysql_string_iterator_isdigit_type \
+                                     (iterator_handle)
+
+#define mysql_string_to_lowercase(string_handle) \
+        mysql_string_service->mysql_string_to_lowercase_type(string_handle)
+
+#define mysql_string_free(mysql_string_handle) \
+        mysql_string_service->mysql_string_free_type(mysql_string_handle)
+
+#define mysql_string_iterator_free(mysql_string_iterator_handle) \
+        mysql_string_service->mysql_string_iterator_free_type \
+                                  (mysql_string_iterator_handle)
+#else
+
+/* This service function convert string into given character set */
+int mysql_string_convert_to_char_ptr(mysql_string_handle string_handle,
+                                     const char *charset_name, char *buffer,
+                                     unsigned int buffer_size, int *error);
+
+/* This service function returns the beginning of the iterator handle */
+mysql_string_iterator_handle mysql_string_get_iterator(mysql_string_handle
+                                                       string_handle);
+/*  
+  This service function gets the next iterator handle
+  returns 0 if reached the end else return 1
+*/
+int mysql_string_iterator_next(mysql_string_iterator_handle iterator_handle);
+
+/*  
+  This service function return 1 if current iterator handle points to a
+  uppercase character else return 0 for client character set.
+*/
+int mysql_string_iterator_isupper(mysql_string_iterator_handle iterator_handle);
+
+/*  
+  This service function return 1 if current iterator handle points to a
+  lowercase character else return 0 for client character set.
+*/
+int mysql_string_iterator_islower(mysql_string_iterator_handle iterator_handle);
+
+/*  
+  This service function return 1 if current iterator handle points to a digit
+  else return 0 for client character sets.
+*/
+int mysql_string_iterator_isdigit(mysql_string_iterator_handle iterator_handle);
+
+/* convert string_handle into lowercase */
+mysql_string_handle mysql_string_to_lowercase(mysql_string_handle
+                                              string_handle);
+
+/* It deallocates the string created on server side during plugin operations */
+void mysql_string_free(mysql_string_handle);
+
+/*  
+  It deallocates the string iterator created on server side
+  during plugin operations
+*/
+void mysql_string_iterator_free(mysql_string_iterator_handle);
+
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+#endif