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MTBL_SOURCE(3) MTBL_SOURCE(3) NAME mtbl_source - obtain key-value entries from a data source SYNOPSIS #include <mtbl.h> struct mtbl_iter * mtbl_source_iter(const struct mtbl_source *s); struct mtbl_iter * mtbl_source_get(const struct mtbl_source *s, const uint8_t *key, size_t len_key); struct mtbl_iter * mtbl_source_get_prefix( const struct mtbl_source *s, const uint8_t *prefix, size_t len_prefix); struct mtbl_iter * mtbl_source_get_range( const struct mtbl_source *s, const uint8_t *key0, size_t len_key0, const uint8_t *key1, size_t len_key1); mtbl_res mtbl_source_write(const struct mtbl_source *s, struct mtbl_writer *w); void mtbl_source_destroy(struct mtbl_source **s); DESCRIPTION The mtbl_source interface provides an abstraction for reading key-value entries from mtbl data sources. mtbl_source_iter() provides an iterator over all of the entries in the data source. mtbl_source_get() provides an exact match iterator which returns all entries whose key matches the key provided in the arguments key and len_key. mtbl_source_get_prefix() provides a prefix iterator which returns all entries whose keys start with prefix and are at least len_prefix bytes long. mtbl_source_get_range() provides a range iterator which returns all entries whose keys are between key0 and key1 inclusive. mtbl_source_write() is a convenience function for reading all of the entries from a source and writing them to an mtbl_writer object. It is equivalent to calling mtbl_writer_add() on all of the entries returned from mtbl_source_iter(). RETURN VALUE mtbl_source_iter(), mtbl_source_get(), mtbl_source_get_prefix(), and mtbl_source_get_range() return mtbl_iter objects. mtbl_source_write() returns mtbl_res_success if all of the entries in the data source were successfully written to the mtbl_writer argument, and mtbl_res_failure otherwise. SEE ALSO mtbl_iter(3) 11/21/2016 MTBL_SOURCE(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO
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