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