func (o *BlockBasedOptions) SetFilterPolicy(fp *FilterPolicy) { var policy *C.rocksdb_filterpolicy_t if fp != nil { policy = fp.Policy } C.rocksdb_block_based_options_set_filter_policy(o.Opt, policy) }
func (db *DB) Open(name string, createIfMissing bool, maxOpenFiles int, writeBufSize int, cacheSize int64, compression int) error { db.opt = C.rocksdb_options_create() C.rocksdb_options_set_create_if_missing(db.opt, boolToUchar(createIfMissing)) C.rocksdb_options_set_write_buffer_size(db.opt, C.size_t(writeBufSize)) C.rocksdb_options_set_max_open_files(db.opt, C.int(maxOpenFiles)) C.rocksdb_options_set_compression(db.opt, C.int(compression)) var block_options = C.rocksdb_block_based_options_create() if cacheSize > 0 { db.cache = C.rocksdb_cache_create_lru(C.size_t(cacheSize)) C.rocksdb_block_based_options_set_block_cache(block_options, db.cache) } else { C.rocksdb_block_based_options_set_no_block_cache(block_options, 1) } db.fp = C.rocksdb_filterpolicy_create_bloom(10) C.rocksdb_block_based_options_set_filter_policy(block_options, db.fp) C.rocksdb_options_set_block_based_table_factory(db.opt, block_options) cname := C.CString(name) defer C.free(unsafe.Pointer(cname)) var errStr *C.char db.db = C.rocksdb_open(db.opt, cname, &errStr) if errStr != nil { defer C.free(unsafe.Pointer(errStr)) return errors.New(C.GoString(errStr)) } db.rOpt = C.rocksdb_readoptions_create() db.wOpt = C.rocksdb_writeoptions_create() return nil }
// SetFilterPolicy sets the filter policy opts reduce disk reads. // Many applications will benefit from passing the result of // NewBloomFilterPolicy() here. // Default: nil func (opts *BlockBasedTableOptions) SetFilterPolicy(fp FilterPolicy) { if nfp, ok := fp.(nativeFilterPolicy); ok { opts.cFp = nfp.c } else { idx := registerFilterPolicy(fp) opts.cFp = C.gorocksdb_filterpolicy_create(C.uintptr_t(idx)) } C.rocksdb_block_based_options_set_filter_policy(opts.c, opts.cFp) }
// If set use the specified filter policy to reduce disk reads. // Many applications will benefit from passing the result of // NewBloomFilterPolicy() here. // Default: nil func (self *BlockBasedTableOptions) SetFilterPolicy(value FilterPolicy) { if nfp, ok := value.(nativeFilterPolicy); ok { self.cfp = nfp.c } else { h := unsafe.Pointer(&value) self.fp = &value self.cfp = C.gorocksdb_filterpolicy_create(h) } C.rocksdb_block_based_options_set_filter_policy(self.c, self.cfp) }