• Interfaces
• 
  
• es_date
• es_mb
• es_mba
• es_mbb
• es_mbc
• es_mbd
• es_mbi
• es_mbm
• es_mbn
• es_mbq
• es_mbs
• es_sc
• es_sd
• es_sdc
• es_sdm
• es_sock
• es_rb
• es_wb

Reference/es_mbm

struct es_mbm is an opaque data structure representing a membership filter. A membership filter is used by iterators ( struct es_mbi ) and sorted iterators ( struct es_mbs ) to traverse only those rows in a database node that meet some filtering criteria.

Membership filters can be applied to one or more integer database fields. The filter itself is a set of valid (or invalid) integer values that a database field may (or may not) have. Filters are bound to a specific field via es_mbb_mbm() and are used with the following combinations of iterator functions:

• es_mbi_beginfetch() / es_mbi_incfetch().
• es_mbs_beginfetch() / es_mbs_incfetch().

Membership filters are most effective for database fields with a tight range of values, such as date-ids or string-ids.

es_mbm_new	Construct a new membership filter.
es_mbm_delete	Delete a membership filter.
es_mbm_add	Add a value to a membership filter.
es_mbm_addrange	Add a range of values to a membership filter.

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