This class is the combination of std::multiset and hash_multiset.
By setting database handles of DB_BTREE or DB_HASH type respectively, you will be using the equivalent of std::multiset or hash_multiset respectively. This container stores the key in the key element of a key/data pair in the underlying database, but doesn't store anything in the data element. Database and environment handle requirement: The requirement to these handles is the same as that to db_multimap .
db_multimap db_map db_container db_set
| Member | Description |
|---|---|
| db_multiset |
Create a std::multiset/hash_multiset equivalent associative container. |
| ~db_multiset | |
| insert |
Insert a single key if the key is not in the container. |
| erase |
Erase elements by key. |
| operator= |
Container content assignment operator. |
| swap |
Swap content with another container. |
| operator== |
Container content equality compare operator. |
| operator!= |
Inequality comparison operator. |
db_multiset(Db *dbp=NULL,
DbEnv *envp=NULL)
Create a std::multiset/hash_multiset equivalent associative container.
See the handle requirement in class details to pass correct database/environment handles.
db_multiset(Db *dbp, DbEnv *envp, InputIterator first,
InputIterator last)
Iteration constructor.
Iterates between first and last, copying each of the elements in the range into this container. Create a std::multi/hash_multiset equivalent associative container. Insert a range of elements into the database. The range is [first, last), which contains elements that can be converted to type ddt automatically. This function supports auto-commit. See the handle requirement in class details to pass correct database/environment handles.
db_multiset(const self &x)
Copy constructor.
Create a database and insert all key/data pairs in x into this container. x's data members are not copied. This function supports auto-commit.