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rocksdb/java/rocksjni/table.cc

60 lines
2.3 KiB

// Copyright (c) 2014, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
// This file implements the "bridge" between Java and C++ for rocksdb::Options.
#include <jni.h>
#include "include/org_rocksdb_PlainTableConfig.h"
#include "include/org_rocksdb_BlockBasedTableConfig.h"
#include "rocksdb/table.h"
#include "rocksdb/cache.h"
#include "rocksdb/filter_policy.h"
/*
* Class: org_rocksdb_PlainTableConfig
* Method: newTableFactoryHandle
* Signature: (IIDI)J
*/
jlong Java_org_rocksdb_PlainTableConfig_newTableFactoryHandle(
JNIEnv* env, jobject jobj, jint jkey_size, jint jbloom_bits_per_key,
jdouble jhash_table_ratio, jint jindex_sparseness) {
rocksdb::PlainTableOptions options = rocksdb::PlainTableOptions();
options.user_key_len = jkey_size;
options.bloom_bits_per_key = jbloom_bits_per_key;
options.hash_table_ratio = jhash_table_ratio;
options.index_sparseness = jindex_sparseness;
return reinterpret_cast<jlong>(rocksdb::NewPlainTableFactory(options));
}
/*
* Class: org_rocksdb_BlockBasedTableConfig
* Method: newTableFactoryHandle
* Signature: (ZJIJIIZI)J
*/
jlong Java_org_rocksdb_BlockBasedTableConfig_newTableFactoryHandle(
JNIEnv* env, jobject jobj, jboolean no_block_cache, jlong block_cache_size,
jint num_shardbits, jlong block_size, jint block_size_deviation,
jint block_restart_interval, jboolean whole_key_filtering,
jint bits_per_key) {
rocksdb::BlockBasedTableOptions options;
options.no_block_cache = no_block_cache;
if (!no_block_cache && block_cache_size > 0) {
if (num_shardbits > 0) {
options.block_cache =
rocksdb::NewLRUCache(block_cache_size, num_shardbits);
} else {
options.block_cache = rocksdb::NewLRUCache(block_cache_size);
}
}
options.block_size = block_size;
options.block_size_deviation = block_size_deviation;
options.block_restart_interval = block_restart_interval;
options.whole_key_filtering = whole_key_filtering;
if (bits_per_key > 0) {
options.filter_policy.reset(rocksdb::NewBloomFilterPolicy(bits_per_key));
}
return reinterpret_cast<jlong>(rocksdb::NewBlockBasedTableFactory(options));
}