diff options
Diffstat (limited to 'sql/sql_class.cc')
| -rw-r--r-- | sql/sql_class.cc | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sql/sql_class.cc b/sql/sql_class.cc index 87cf9b16d24..0f54d3b7ca5 100644 --- a/sql/sql_class.cc +++ b/sql/sql_class.cc @@ -91,6 +91,40 @@ bool key_part_spec::operator==(const key_part_spec& other) const return length == other.length && !strcmp(field_name, other.field_name); } +/** + Construct an (almost) deep copy of this key. Only those + elements that are known to never change are not copied. + If out of memory, a partial copy is returned and an error is set + in THD. +*/ + +Key::Key(const Key &rhs, MEM_ROOT *mem_root) + :type(rhs.type), + key_create_info(rhs.key_create_info), + columns(rhs.columns, mem_root), + name(rhs.name), + generated(rhs.generated) +{ + list_copy_and_replace_each_value(columns, mem_root); +} + +/** + Construct an (almost) deep copy of this foreign key. Only those + elements that are known to never change are not copied. + If out of memory, a partial copy is returned and an error is set + in THD. +*/ + +foreign_key::foreign_key(const foreign_key &rhs, MEM_ROOT *mem_root) + :Key(rhs), + ref_table(rhs.ref_table), + ref_columns(rhs.ref_columns), + delete_opt(rhs.delete_opt), + update_opt(rhs.update_opt), + match_opt(rhs.match_opt) +{ + list_copy_and_replace_each_value(ref_columns, mem_root); +} /* Test if a foreign key (= generated key) is a prefix of the given key |