[#BaseIndex-DB-2constructor]
= xref:BaseIndex.adoc[BaseIndex]::xref:BaseIndex/DB.adoc[DB]::DB
:relfileprefix: ../../
:mrdocs:

Open the index database at the given path.

== Synopsis

Declared in `<index/base.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
DB(
    xref:fs/path.adoc[fs::path] const& path,
    size_t n_cache_size,
    bool f_memory = false,
    bool f_wipe = false,
    bool f_obfuscate = false,
    bool f_bloom = true);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *path*
| Directory where the database is stored.
| *n_cache_size*
| Size of the LevelDB in‐memory cache, in bytes.
| *f_memory*
| Keep the database in memory instead of on disk.
| *f_wipe*
| Erase any existing database before opening.
| *f_obfuscate*
| Obfuscate the on‐disk data with a random key.
| *f_bloom*
| Enable the LevelDB bloom filter.
|===


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