1 files changed, 147 insertions, 0 deletions
diff --git a/include/ma_dyncol.h b/include/ma_dyncol.h
new file mode 100644
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--- /dev/null
+++ b/include/ma_dyncol.h
@@ -0,0 +1,147 @@
+/* Copyright (c) 2011, Monty Program Ab
+   Copyright (c) 2011, Oleksandr Byelkin
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must the following disclaimer in
+     the documentation and/or other materials provided with the
+     distribution.
+
+   THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND ANY
+   EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+   USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+   OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+   SUCH DAMAGE.
+*/
+
+#ifndef ma_dyncol_h
+#define ma_dyncol_h
+
+#include <decimal.h>
+#include <my_decimal_limits.h>
+#include <mysql_time.h>
+
+/*
+  Max length for data in a dynamic colums. This comes from how the
+  how the offset are stored.
+*/
+#define MAX_DYNAMIC_COLUMN_LENGTH 0X1FFFFFFFL
+
+/* NO and OK is the same used just to show semantics */
+#define ER_DYNCOL_NO ER_DYNCOL_OK
+
+enum enum_dyncol_func_result
+{
+  ER_DYNCOL_OK= 0,
+  ER_DYNCOL_YES= 1,                /* For functions returning 0/1 */
+  ER_DYNCOL_FORMAT= -1,            /* Wrong format of the encoded string */
+  ER_DYNCOL_LIMIT=  -2,            /* Some limit reached */
+  ER_DYNCOL_RESOURCE= -3,          /* Out of resourses */
+  ER_DYNCOL_DATA= -4,              /* Incorrect input data */
+  ER_DYNCOL_UNKNOWN_CHARSET= -5    /* Unknown character set */
+};
+
+typedef DYNAMIC_STRING DYNAMIC_COLUMN;
+
+enum enum_dynamic_column_type
+{
+  DYN_COL_NULL= 0,
+  DYN_COL_INT,
+  DYN_COL_UINT,
+  DYN_COL_DOUBLE,
+  DYN_COL_STRING,
+  DYN_COL_DECIMAL,
+  DYN_COL_DATETIME,
+  DYN_COL_DATE,
+  DYN_COL_TIME
+};
+
+typedef enum enum_dynamic_column_type DYNAMIC_COLUMN_TYPE;
+
+struct st_dynamic_column_value
+{
+  DYNAMIC_COLUMN_TYPE type;
+  union
+  {
+    long long long_value;
+    unsigned long long ulong_value;
+    double double_value;
+    struct {
+      LEX_STRING string_value;
+      CHARSET_INFO *charset;
+    };
+    struct {
+      decimal_digit_t decimal_buffer[DECIMAL_BUFF_LENGTH];
+      decimal_t decimal_value;
+    };
+    MYSQL_TIME time_value;
+  };
+};
+
+typedef struct st_dynamic_column_value DYNAMIC_COLUMN_VALUE;
+
+enum enum_dyncol_func_result
+dynamic_column_create(DYNAMIC_COLUMN *str,
+                      uint column_nr, DYNAMIC_COLUMN_VALUE *value);
+
+enum enum_dyncol_func_result
+dynamic_column_create_many(DYNAMIC_COLUMN *str,
+                           uint column_count,
+                           uint *column_numbers,
+                           DYNAMIC_COLUMN_VALUE *values);
+
+enum enum_dyncol_func_result
+dynamic_column_update(DYNAMIC_COLUMN *org, uint column_nr,
+                      DYNAMIC_COLUMN_VALUE *value);
+enum enum_dyncol_func_result
+dynamic_column_update_many(DYNAMIC_COLUMN *str,
+                           uint add_column_count,
+                           uint *column_numbers,
+                           DYNAMIC_COLUMN_VALUE *values);
+
+enum enum_dyncol_func_result
+dynamic_column_delete(DYNAMIC_COLUMN *org, uint column_nr);
+
+enum enum_dyncol_func_result
+dynamic_column_exists(DYNAMIC_COLUMN *org, uint column_nr);
+
+/* List of not NULL columns */
+enum enum_dyncol_func_result
+dynamic_column_list(DYNAMIC_COLUMN *org, DYNAMIC_ARRAY *array_of_uint);
+
+/*
+   if the column do not exists it is NULL
+*/
+enum enum_dyncol_func_result
+dynamic_column_get(DYNAMIC_COLUMN *org, uint column_nr,
+                   DYNAMIC_COLUMN_VALUE *store_it_here);
+
+#define dynamic_column_initialize(A) memset((A), 0, sizeof(*(A)))
+#define dynamic_column_column_free(V) dynstr_free(V)
+
+/***************************************************************************
+ Internal functions, don't use if you don't know what you are doing...
+***************************************************************************/
+
+#define dynamic_column_reassociate(V,P,L, A) dynstr_reassociate((V),(P),(L),(A))
+
+#define dynamic_column_value_init(V) (V)->type= DYN_COL_NULL
+
+/*
+  Prepare value for using as decimal
+*/
+void dynamic_column_prepare_decimal(DYNAMIC_COLUMN_VALUE *value);
+
+#endif