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ndb: wl-1732 support all charsets

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This commit is contained in:
pekka@mysql.com
2004-12-12 18:37:36 +01:00
parent 40355074d0
commit 31d8a89407
31 changed files with 1642 additions and 1034 deletions
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24
ndb/include/util/NdbSqlUtil.hpp
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@@ -37,17 +37,23 @@ public:
const char* s2, unsigned n2, bool padded);
/**
* Compare kernel attribute values. Returns -1, 0, +1 for less,
* equal, greater, respectively. Parameters are pointers to values,
* full attribute size in words, and size of available data in words.
* There is also pointer to type specific extra info. Char types
* receive CHARSET_INFO in it.
* Compare attribute values. Returns -1, 0, +1 for less, equal,
* greater, respectively. Parameters are pointers to values and their
* lengths in bytes. The lengths can differ.
*
* If available size is less than full size, CmpUnknown may be
* returned. If a value cannot be parsed, it compares like NULL i.e.
* less than any valid value.
* First value is a full value but second value can be partial. If
* the partial value is not enough to determine the result, CmpUnknown
* will be returned. A shorter second value is not necessarily
* partial. Partial values are allowed only for types where prefix
* comparison is possible (basically, binary types).
*
* First parameter is a pointer to type specific extra info. Char
* types receive CHARSET_INFO in it.
*
* If a value cannot be parsed, it compares like NULL i.e. less than
* any valid value.
*/
typedef int Cmp(const void* info, const Uint32* p1, const Uint32* p2, Uint32 full, Uint32 size);
typedef int Cmp(const void* info, const void* p1, unsigned n1, const void* p2, unsigned n2, bool full);
enum CmpResult {
CmpLess = -1,