diff options
Diffstat (limited to 'sql/item.cc')
| -rw-r--r-- | sql/item.cc | 70 |
1 files changed, 66 insertions, 4 deletions
diff --git a/sql/item.cc b/sql/item.cc index ad209817d8a..cabae46ed71 100644 --- a/sql/item.cc +++ b/sql/item.cc @@ -255,7 +255,7 @@ bool Item::get_time(TIME *ltime) return 0; } -CHARSET_INFO * Item::default_charset() +CHARSET_INFO *Item::default_charset() { return current_thd->variables.collation_connection; } @@ -736,6 +736,70 @@ bool Item_param::set_longdata(const char *str, ulong length) /* + Set parameter value from user variable value. + + SYNOPSIS + set_from_user_var + thd Current thread + entry User variable structure (NULL means use NULL value) + + RETURN + 0 OK + 1 Out of memort +*/ + +bool Item_param::set_from_user_var(THD *thd, const user_var_entry *entry) +{ + DBUG_ENTER("Item_param::set_from_user_var"); + if (entry && entry->value) + { + item_result_type= entry->type; + switch (entry->type) + { + case REAL_RESULT: + set_double(*(double*)entry->value); + break; + case INT_RESULT: + set_int(*(longlong*)entry->value, 21); + break; + case STRING_RESULT: + { + CHARSET_INFO *fromcs= entry->collation.collation; + CHARSET_INFO *tocs= thd->variables.collation_connection; + uint32 dummy_offset; + + value.cs_info.character_set_client= fromcs; + /* + Setup source and destination character sets so that they + are different only if conversion is necessary: this will + make later checks easier. + */ + value.cs_info.final_character_set_of_str_value= + String::needs_conversion(0, fromcs, tocs, &dummy_offset) ? + tocs : fromcs; + /* + Exact value of max_length is not known unless data is converted to + charset of connection, so we have to set it later. + */ + item_type= Item::STRING_ITEM; + item_result_type= STRING_RESULT; + + if (set_str((const char *)entry->value, entry->length)) + DBUG_RETURN(1); + } + break; + default: + DBUG_ASSERT(0); + set_null(); + } + } + else + set_null(); + + DBUG_RETURN(0); +} + +/* Resets parameter after execution. SYNOPSIS @@ -767,8 +831,6 @@ void Item_param::reset() int Item_param::save_in_field(Field *field, bool no_conversions) { - DBUG_ASSERT(current_thd->command == COM_EXECUTE); - field->set_notnull(); switch (state) { @@ -1666,7 +1728,7 @@ bool Item::send(Protocol *protocol, String *buffer) } case MYSQL_TYPE_TINY: { - longlong nr; + longlong nr; nr= val_int(); if (!null_value) result= protocol->store_tiny(nr); |