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< p > Library Version 11.2.5.2< / p >
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< th colspan = "3" align = "center" > open_db< / th >
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< h2 class = "title" style = "clear: both" > < a id = "stldbstl_global_functionsopen_db" > < / a > open_db< / h2 >
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< h3 class = "title" > < a id = "stldbstl_global_functionsopen_db_details" > < / a > Function Details< / h3 >
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Db* open_db(DbEnv *penv, const char *filename, DBTYPE dbtype,
u_int32_t oflags, u_int32_t set_flags, int mode=0644, DbTxn *txn=NULL,
u_int32_t cflags=0,
const char *dbname=NULL)
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< p > Helper function to open a database and register it into dbstl for the calling thread. < / p >
< p > Users still need to register it in any other thread using it if it is shared by multiple threads, via < a class = "link" href = "stldbstl_global_functionsregister_db.html" title = "register_db" > register_db()< / a >
function. Users don't need to delete or free the memory of the returned object, dbstl will take care of that. When you don't use < a class = "link" href = "stldbstl_global_functionsopen_db.html" title = "open_db" > dbstl::open_db()< / a >
but explicitly call DB C++ API to open a database, you must new the Db object, rather than create it on stack, and you must delete the Db object by yourself. < / p >
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< h5 class = "title" > < a id = "id3593623" > < / a > penv< / h5 >
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< p > The environment to open the database from. < / p >
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< h5 class = "title" > < a id = "id3593662" > < / a > txn< / h5 >
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< p > The transaction to open the database from, passed to Db::open. < / p >
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< h5 class = "title" > < a id = "id3593668" > < / a > dbtype< / h5 >
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< p > The database type, passed to Db::open. < / p >
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< h5 class = "title" > < a id = "id3593673" > < / a > oflags< / h5 >
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< p > The database open flags, passed to Db::open. < / p >
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< h5 class = "title" > < a id = "id3593680" > < / a > filename< / h5 >
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< p > The database file name, passed to Db::open. < / p >
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< h5 class = "title" > < a id = "id3593686" > < / a > mode< / h5 >
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< p > The database open mode, passed to Db::open. < / p >
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< h5 class = "title" > < a id = "id3593692" > < / a > cflags< / h5 >
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< p > The create flags passed to Db class constructor. < / p >
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< h5 class = "title" > < a id = "id3593698" > < / a > dbname< / h5 >
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< p > The database name, passed to Db::open. < / p >
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< h5 class = "title" > < a id = "id3593704" > < / a > set_flags< / h5 >
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< p > The flags to be set to the created database handle. < / p >
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< h4 class = "title" > < a id = "id3593582" > < / a > Return Value< / h4 >
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< p > The opened database handle. < / p >
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< h4 class = "title" > < a id = "id3593572" > < / a > See Also< / h4 >
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< p > < a class = "link" href = "stldbstl_global_functionsregister_db.html" title = "register_db" > register_db(Db *)< / a >
; < / p >
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< p > open_db_env; < / p >
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