NextGraph
/
rocksdb
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
5669 Commits
4 Branches
0 Tags
169 MiB
 
 
 
 
 
 
Tag: Branch: Tree: c26a4d8e8a
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'c26a4d8e8a'
${ noResults }
rocksdb/java/rocksjni/rocksjni.cc

1787 lines
62 KiB
Raw Blame History

// Copyright (c) 2011-present, 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++ and enables
// calling c++ rocksdb::DB methods from Java side.
#include <jni.h>
#include <stdio.h>
#include <stdlib.h>
#include <memory>
#include <string>
#include <tuple>
#include <vector>
#include <algorithm>
#include "include/org_rocksdb_RocksDB.h"
#include "rocksdb/cache.h"
#include "rocksdb/db.h"
#include "rocksdb/options.h"
#include "rocksdb/types.h"
#include "rocksjni/portal.h"
#ifdef min
#undef min
#endif
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Open
jlong rocksdb_open_helper(JNIEnv* env, jlong jopt_handle, jstring jdb_path,
std::function<rocksdb::Status(
const rocksdb::Options&, const std::string&, rocksdb::DB**)> open_fn
) {
auto* opt = reinterpret_cast<rocksdb::Options*>(jopt_handle);
rocksdb::DB* db = nullptr;
const char* db_path = env->GetStringUTFChars(jdb_path, NULL);
rocksdb::Status s = open_fn(*opt, db_path, &db);
env->ReleaseStringUTFChars(jdb_path, db_path);
if (s.ok()) {
return reinterpret_cast<jlong>(db);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return 0;
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: open
* Signature: (JLjava/lang/String;)J
*/
jlong Java_org_rocksdb_RocksDB_open__JLjava_lang_String_2(
JNIEnv* env, jclass jcls, jlong jopt_handle, jstring jdb_path) {
return rocksdb_open_helper(env, jopt_handle, jdb_path,
(rocksdb::Status(*)
(const rocksdb::Options&, const std::string&, rocksdb::DB**)
)&rocksdb::DB::Open
);
}
/*
* Class: org_rocksdb_RocksDB
* Method: openROnly
* Signature: (JLjava/lang/String;)J
*/
jlong Java_org_rocksdb_RocksDB_openROnly__JLjava_lang_String_2(
JNIEnv* env, jclass jcls, jlong jopt_handle, jstring jdb_path) {
return rocksdb_open_helper(env, jopt_handle, jdb_path, [](
const rocksdb::Options& options,
const std::string& db_path, rocksdb::DB** db) {
return rocksdb::DB::OpenForReadOnly(options, db_path, db);
});
}
jlongArray rocksdb_open_helper(JNIEnv* env, jlong jopt_handle,
jstring jdb_path, jobjectArray jcolumn_names, jlongArray jcolumn_options,
std::function<rocksdb::Status(
const rocksdb::DBOptions&, const std::string&,
const std::vector<rocksdb::ColumnFamilyDescriptor>&,
std::vector<rocksdb::ColumnFamilyHandle*>*,
rocksdb::DB**)> open_fn
) {
auto* opt = reinterpret_cast<rocksdb::DBOptions*>(jopt_handle);
const char* db_path = env->GetStringUTFChars(jdb_path, NULL);
std::vector<rocksdb::ColumnFamilyDescriptor> column_families;
jsize len_cols = env->GetArrayLength(jcolumn_names);
jlong* jco = env->GetLongArrayElements(jcolumn_options, NULL);
for(int i = 0; i < len_cols; i++) {
jobject jcn = env->GetObjectArrayElement(jcolumn_names, i);
jbyteArray jcn_ba = reinterpret_cast<jbyteArray>(jcn);
jbyte* jcf_name = env->GetByteArrayElements(jcn_ba, NULL);
const int jcf_name_len = env->GetArrayLength(jcn_ba);
//TODO(AR) do I need to make a copy of jco[i] ?
std::string cf_name (reinterpret_cast<char *>(jcf_name), jcf_name_len);
rocksdb::ColumnFamilyOptions* cf_options =
reinterpret_cast<rocksdb::ColumnFamilyOptions*>(jco[i]);
column_families.push_back(
rocksdb::ColumnFamilyDescriptor(cf_name, *cf_options));
env->ReleaseByteArrayElements(jcn_ba, jcf_name, JNI_ABORT);
env->DeleteLocalRef(jcn);
}
env->ReleaseLongArrayElements(jcolumn_options, jco, JNI_ABORT);
std::vector<rocksdb::ColumnFamilyHandle*> handles;
rocksdb::DB* db = nullptr;
rocksdb::Status s = open_fn(*opt, db_path, column_families,
&handles, &db);
// check if open operation was successful
if (s.ok()) {
jsize resultsLen = 1 + len_cols; //db handle + column family handles
std::unique_ptr<jlong[]> results =
std::unique_ptr<jlong[]>(new jlong[resultsLen]);
results[0] = reinterpret_cast<jlong>(db);
for(int i = 1; i <= len_cols; i++) {
results[i] = reinterpret_cast<jlong>(handles[i - 1]);
}
jlongArray jresults = env->NewLongArray(resultsLen);
env->SetLongArrayRegion(jresults, 0, resultsLen, results.get());
return jresults;
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return NULL;
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: openROnly
* Signature: (JLjava/lang/String;[[B[J)[J
*/
jlongArray Java_org_rocksdb_RocksDB_openROnly__JLjava_lang_String_2_3_3B_3J(
JNIEnv* env, jclass jcls, jlong jopt_handle, jstring jdb_path,
jobjectArray jcolumn_names, jlongArray jcolumn_options) {
return rocksdb_open_helper(env, jopt_handle, jdb_path, jcolumn_names,
jcolumn_options, [](
const rocksdb::DBOptions& options, const std::string& db_path,
const std::vector<rocksdb::ColumnFamilyDescriptor>& column_families,
std::vector<rocksdb::ColumnFamilyHandle*>* handles, rocksdb::DB** db) {
return rocksdb::DB::OpenForReadOnly(options, db_path, column_families,
handles, db);
});
}
/*
* Class: org_rocksdb_RocksDB
* Method: open
* Signature: (JLjava/lang/String;[[B[J)[J
*/
jlongArray Java_org_rocksdb_RocksDB_open__JLjava_lang_String_2_3_3B_3J(
JNIEnv* env, jclass jcls, jlong jopt_handle, jstring jdb_path,
jobjectArray jcolumn_names, jlongArray jcolumn_options) {
return rocksdb_open_helper(env, jopt_handle, jdb_path, jcolumn_names,
jcolumn_options, (rocksdb::Status(*)
(const rocksdb::DBOptions&, const std::string&,
const std::vector<rocksdb::ColumnFamilyDescriptor>&,
std::vector<rocksdb::ColumnFamilyHandle*>*, rocksdb::DB**)
)&rocksdb::DB::Open
);
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::ListColumnFamilies
/*
* Class: org_rocksdb_RocksDB
* Method: listColumnFamilies
* Signature: (JLjava/lang/String;)[[B
*/
jobjectArray Java_org_rocksdb_RocksDB_listColumnFamilies(
JNIEnv* env, jclass jclazz, jlong jopt_handle, jstring jdb_path) {
std::vector<std::string> column_family_names;
auto* opt = reinterpret_cast<rocksdb::Options*>(jopt_handle);
const char* db_path = env->GetStringUTFChars(jdb_path, 0);
rocksdb::Status s = rocksdb::DB::ListColumnFamilies(*opt, db_path,
&column_family_names);
env->ReleaseStringUTFChars(jdb_path, db_path);
jclass jcls_ba = env->FindClass("[B");
jobjectArray jresults = env->NewObjectArray(
static_cast<jsize>(column_family_names.size()), jcls_ba, NULL);
if (s.ok()) {
for (std::vector<std::string>::size_type i = 0;
i < column_family_names.size(); i++) {
jbyteArray jcf_value =
env->NewByteArray(static_cast<jsize>(column_family_names[i].size()));
env->SetByteArrayRegion(
jcf_value, 0, static_cast<jsize>(column_family_names[i].size()),
reinterpret_cast<const jbyte*>(column_family_names[i].data()));
env->SetObjectArrayElement(jresults, static_cast<jsize>(i), jcf_value);
env->DeleteLocalRef(jcf_value);
}
}
return jresults;
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Put
void rocksdb_put_helper(JNIEnv* env, rocksdb::DB* db,
const rocksdb::WriteOptions& write_options,
rocksdb::ColumnFamilyHandle* cf_handle, jbyteArray jkey,
jint jkey_off, jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
jbyte* key = new jbyte[jkey_len];
env->GetByteArrayRegion(jkey, jkey_off, jkey_len, key);
jbyte* value = new jbyte[jval_len];
env->GetByteArrayRegion(jval, jval_off, jval_len, value);
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), jkey_len);
rocksdb::Slice value_slice(reinterpret_cast<char*>(value), jval_len);
rocksdb::Status s;
if (cf_handle != nullptr) {
s = db->Put(write_options, cf_handle, key_slice, value_slice);
} else {
// backwards compatibility
s = db->Put(write_options, key_slice, value_slice);
}
// cleanup
delete [] value;
delete [] key;
if (s.ok()) {
return;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
/*
* Class: org_rocksdb_RocksDB
* Method: put
* Signature: (J[BII[BII)V
*/
void Java_org_rocksdb_RocksDB_put__J_3BII_3BII(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
rocksdb_put_helper(env, db, default_write_options, nullptr, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: put
* Signature: (J[BII[BIIJ)V
*/
void Java_org_rocksdb_RocksDB_put__J_3BII_3BIIJ(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len,
jlong jcf_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_put_helper(env, db, default_write_options, cf_handle, jkey,
jkey_off, jkey_len, jval, jval_off, jval_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: put
* Signature: (JJ[BII[BII)V
*/
void Java_org_rocksdb_RocksDB_put__JJ_3BII_3BII(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jlong jwrite_options_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto write_options = reinterpret_cast<rocksdb::WriteOptions*>(
jwrite_options_handle);
rocksdb_put_helper(env, db, *write_options, nullptr, jkey, jkey_off, jkey_len,
jval, jval_off, jval_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: put
* Signature: (JJ[BII[BIIJ)V
*/
void Java_org_rocksdb_RocksDB_put__JJ_3BII_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jwrite_options_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len, jlong jcf_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto write_options = reinterpret_cast<rocksdb::WriteOptions*>(
jwrite_options_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_put_helper(env, db, *write_options, cf_handle, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Write
/*
* Class: org_rocksdb_RocksDB
* Method: write0
* Signature: (JJJ)V
*/
void Java_org_rocksdb_RocksDB_write0(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jwrite_options_handle, jlong jwb_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* write_options = reinterpret_cast<rocksdb::WriteOptions*>(
jwrite_options_handle);
auto* wb = reinterpret_cast<rocksdb::WriteBatch*>(jwb_handle);
rocksdb::Status s = db->Write(*write_options, wb);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: write1
* Signature: (JJJ)V
*/
void Java_org_rocksdb_RocksDB_write1(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jwrite_options_handle, jlong jwbwi_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* write_options = reinterpret_cast<rocksdb::WriteOptions*>(
jwrite_options_handle);
auto* wbwi = reinterpret_cast<rocksdb::WriteBatchWithIndex*>(jwbwi_handle);
auto* wb = wbwi->GetWriteBatch();
rocksdb::Status s = db->Write(*write_options, wb);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::KeyMayExist
jboolean key_may_exist_helper(JNIEnv* env, rocksdb::DB* db,
const rocksdb::ReadOptions& read_opt,
rocksdb::ColumnFamilyHandle* cf_handle, jbyteArray jkey, jint jkey_off,
jint jkey_len, jobject jstring_buffer) {
std::string value;
bool value_found = false;
jbyte* key = new jbyte[jkey_len];
env->GetByteArrayRegion(jkey, jkey_off, jkey_len, key);
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), jkey_len);
bool keyMayExist;
if (cf_handle != nullptr) {
keyMayExist = db->KeyMayExist(read_opt, cf_handle, key_slice,
&value, &value_found);
} else {
keyMayExist = db->KeyMayExist(read_opt, key_slice,
&value, &value_found);
}
// cleanup
delete [] key;
// extract the value
if (value_found && !value.empty()) {
jclass clazz = env->GetObjectClass(jstring_buffer);
jmethodID mid = env->GetMethodID(clazz, "append",
"(Ljava/lang/String;)Ljava/lang/StringBuffer;");
jstring new_value_str = env->NewStringUTF(value.c_str());
env->CallObjectMethod(jstring_buffer, mid, new_value_str);
}
return static_cast<jboolean>(keyMayExist);
}
/*
* Class: org_rocksdb_RocksDB
* Method: keyMayExist
* Signature: (J[BIILjava/lang/StringBuffer;)Z
*/
jboolean Java_org_rocksdb_RocksDB_keyMayExist__J_3BIILjava_lang_StringBuffer_2(
JNIEnv* env, jobject jdb, jlong jdb_handle, jbyteArray jkey, jint jkey_off,
jint jkey_len, jobject jstring_buffer) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
return key_may_exist_helper(env, db, rocksdb::ReadOptions(),
nullptr, jkey, jkey_off, jkey_len, jstring_buffer);
}
/*
* Class: org_rocksdb_RocksDB
* Method: keyMayExist
* Signature: (J[BIIJLjava/lang/StringBuffer;)Z
*/
jboolean Java_org_rocksdb_RocksDB_keyMayExist__J_3BIIJLjava_lang_StringBuffer_2(
JNIEnv* env, jobject jdb, jlong jdb_handle, jbyteArray jkey, jint jkey_off,
jint jkey_len, jlong jcf_handle, jobject jstring_buffer) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(
jcf_handle);
if (cf_handle != nullptr) {
return key_may_exist_helper(env, db, rocksdb::ReadOptions(),
cf_handle, jkey, jkey_off, jkey_len, jstring_buffer);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
return true;
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: keyMayExist
* Signature: (JJ[BIILjava/lang/StringBuffer;)Z
*/
jboolean Java_org_rocksdb_RocksDB_keyMayExist__JJ_3BIILjava_lang_StringBuffer_2(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jread_options_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jobject jstring_buffer) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto& read_options = *reinterpret_cast<rocksdb::ReadOptions*>(
jread_options_handle);
return key_may_exist_helper(env, db, read_options,
nullptr, jkey, jkey_off, jkey_len, jstring_buffer);
}
/*
* Class: org_rocksdb_RocksDB
* Method: keyMayExist
* Signature: (JJ[BIIJLjava/lang/StringBuffer;)Z
*/
jboolean Java_org_rocksdb_RocksDB_keyMayExist__JJ_3BIIJLjava_lang_StringBuffer_2(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jread_options_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jlong jcf_handle,
jobject jstring_buffer) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto& read_options = *reinterpret_cast<rocksdb::ReadOptions*>(
jread_options_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(
jcf_handle);
if (cf_handle != nullptr) {
return key_may_exist_helper(env, db, read_options, cf_handle,
jkey, jkey_off, jkey_len, jstring_buffer);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
return true;
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Get
jbyteArray rocksdb_get_helper(
JNIEnv* env, rocksdb::DB* db, const rocksdb::ReadOptions& read_opt,
rocksdb::ColumnFamilyHandle* column_family_handle, jbyteArray jkey,
jint jkey_off, jint jkey_len) {
jbyte* key = new jbyte[jkey_len];
env->GetByteArrayRegion(jkey, jkey_off, jkey_len, key);
rocksdb::Slice key_slice(
reinterpret_cast<char*>(key), jkey_len);
std::string value;
rocksdb::Status s;
if (column_family_handle != nullptr) {
s = db->Get(read_opt, column_family_handle, key_slice, &value);
} else {
// backwards compatibility
s = db->Get(read_opt, key_slice, &value);
}
// cleanup
delete [] key;
if (s.IsNotFound()) {
return nullptr;
}
if (s.ok()) {
jbyteArray jret_value = env->NewByteArray(static_cast<jsize>(value.size()));
env->SetByteArrayRegion(jret_value, 0, static_cast<jsize>(value.size()),
reinterpret_cast<const jbyte*>(value.c_str()));
return jret_value;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return nullptr;
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (J[BII)[B
*/
jbyteArray Java_org_rocksdb_RocksDB_get__J_3BII(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len) {
return rocksdb_get_helper(env,
reinterpret_cast<rocksdb::DB*>(jdb_handle),
rocksdb::ReadOptions(), nullptr,
jkey, jkey_off, jkey_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (J[BIIJ)[B
*/
jbyteArray Java_org_rocksdb_RocksDB_get__J_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jlong jcf_handle) {
auto db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
return rocksdb_get_helper(env, db_handle, rocksdb::ReadOptions(),
cf_handle, jkey, jkey_off, jkey_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
// will never be evaluated
return env->NewByteArray(0);
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (JJ[BII)[B
*/
jbyteArray Java_org_rocksdb_RocksDB_get__JJ_3BII(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jropt_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len) {
return rocksdb_get_helper(env,
reinterpret_cast<rocksdb::DB*>(jdb_handle),
*reinterpret_cast<rocksdb::ReadOptions*>(jropt_handle), nullptr,
jkey, jkey_off, jkey_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (JJ[BIIJ)[B
*/
jbyteArray Java_org_rocksdb_RocksDB_get__JJ_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jropt_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jlong jcf_handle) {
auto db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto& ro_opt = *reinterpret_cast<rocksdb::ReadOptions*>(jropt_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
return rocksdb_get_helper(env, db_handle, ro_opt, cf_handle,
jkey, jkey_off, jkey_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
// will never be evaluated
return env->NewByteArray(0);
}
}
jint rocksdb_get_helper(JNIEnv* env, rocksdb::DB* db,
const rocksdb::ReadOptions& read_options,
rocksdb::ColumnFamilyHandle* column_family_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len,
jbyteArray jval, jint jval_off, jint jval_len) {
static const int kNotFound = -1;
static const int kStatusError = -2;
jbyte* key = new jbyte[jkey_len];
env->GetByteArrayRegion(jkey, jkey_off, jkey_len, key);
rocksdb::Slice key_slice(
reinterpret_cast<char*>(key), jkey_len);
// TODO(yhchiang): we might save one memory allocation here by adding
// a DB::Get() function which takes preallocated jbyte* as input.
std::string cvalue;
rocksdb::Status s;
if (column_family_handle != nullptr) {
s = db->Get(read_options, column_family_handle, key_slice, &cvalue);
} else {
// backwards compatibility
s = db->Get(read_options, key_slice, &cvalue);
}
// cleanup
delete [] key;
if (s.IsNotFound()) {
return kNotFound;
} else if (!s.ok()) {
// Here since we are throwing a Java exception from c++ side.
// As a result, c++ does not know calling this function will in fact
// throwing an exception. As a result, the execution flow will
// not stop here, and codes after this throw will still be
// executed.
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
// Return a dummy const value to avoid compilation error, although
// java side might not have a chance to get the return value :)
return kStatusError;
}
jint cvalue_len = static_cast<jint>(cvalue.size());
jint length = std::min(jval_len, cvalue_len);
env->SetByteArrayRegion(jval, jval_off, length,
reinterpret_cast<const jbyte*>(cvalue.c_str()));
return cvalue_len;
}
// cf multi get
jobjectArray multi_get_helper(JNIEnv* env, jobject jdb, rocksdb::DB* db,
const rocksdb::ReadOptions& rOpt, jobjectArray jkeys,
jintArray jkey_offs, jintArray jkey_lens,
jlongArray jcolumn_family_handles) {
std::vector<rocksdb::ColumnFamilyHandle*> cf_handles;
if (jcolumn_family_handles != nullptr) {
jsize len_cols = env->GetArrayLength(jcolumn_family_handles);
jlong* jcfh = env->GetLongArrayElements(jcolumn_family_handles, NULL);
for (int i = 0; i < len_cols; i++) {
auto* cf_handle =
reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcfh[i]);
cf_handles.push_back(cf_handle);
}
env->ReleaseLongArrayElements(jcolumn_family_handles, jcfh, JNI_ABORT);
}
std::vector<rocksdb::Slice> keys;
std::vector<std::pair<jbyte*, jobject>> keys_to_free;
jsize len_keys = env->GetArrayLength(jkeys);
if (env->EnsureLocalCapacity(len_keys) != 0) {
// out of memory
return NULL;
}
jint* jkey_off = env->GetIntArrayElements(jkey_offs, NULL);
jint* jkey_len = env->GetIntArrayElements(jkey_lens, NULL);
for (int i = 0; i < len_keys; i++) {
jobject jkey = env->GetObjectArrayElement(jkeys, i);
jbyteArray jkey_ba = reinterpret_cast<jbyteArray>(jkey);
jint len_key = jkey_len[i];
jbyte* key = new jbyte[len_key];
env->GetByteArrayRegion(jkey_ba, jkey_off[i], len_key, key);
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), len_key);
keys.push_back(key_slice);
keys_to_free.push_back(std::pair<jbyte*, jobject>(key, jkey));
}
// cleanup jkey_off and jken_len
env->ReleaseIntArrayElements(jkey_lens, jkey_len, JNI_ABORT);
env->ReleaseIntArrayElements(jkey_offs, jkey_off, JNI_ABORT);
std::vector<std::string> values;
std::vector<rocksdb::Status> s;
if (cf_handles.size() == 0) {
s = db->MultiGet(rOpt, keys, &values);
} else {
s = db->MultiGet(rOpt, cf_handles, keys, &values);
}
// free up allocated byte arrays
for (auto it = keys_to_free.begin(); it != keys_to_free.end(); ++it) {
delete [] it->first;
env->DeleteLocalRef(it->second);
}
keys_to_free.clear();
// prepare the results
jclass jcls_ba = env->FindClass("[B");
jobjectArray jresults =
env->NewObjectArray(static_cast<jsize>(s.size()), jcls_ba, NULL);
// add to the jresults
for (std::vector<rocksdb::Status>::size_type i = 0; i != s.size(); i++) {
if (s[i].ok()) {
jbyteArray jentry_value =
env->NewByteArray(static_cast<jsize>(values[i].size()));
env->SetByteArrayRegion(
jentry_value, 0, static_cast<jsize>(values[i].size()),
reinterpret_cast<const jbyte*>(values[i].c_str()));
env->SetObjectArrayElement(jresults, static_cast<jsize>(i), jentry_value);
env->DeleteLocalRef(jentry_value);
}
}
return jresults;
}
/*
* Class: org_rocksdb_RocksDB
* Method: multiGet
* Signature: (J[[B[I[I)[[B
*/
jobjectArray Java_org_rocksdb_RocksDB_multiGet__J_3_3B_3I_3I(
JNIEnv* env, jobject jdb, jlong jdb_handle, jobjectArray jkeys,
jintArray jkey_offs, jintArray jkey_lens) {
return multi_get_helper(env, jdb, reinterpret_cast<rocksdb::DB*>(jdb_handle),
rocksdb::ReadOptions(), jkeys, jkey_offs, jkey_lens, nullptr);
}
/*
* Class: org_rocksdb_RocksDB
* Method: multiGet
* Signature: (J[[B[I[I[J)[[B
*/
jobjectArray Java_org_rocksdb_RocksDB_multiGet__J_3_3B_3I_3I_3J(
JNIEnv* env, jobject jdb, jlong jdb_handle, jobjectArray jkeys,
jintArray jkey_offs, jintArray jkey_lens,
jlongArray jcolumn_family_handles) {
return multi_get_helper(env, jdb, reinterpret_cast<rocksdb::DB*>(jdb_handle),
rocksdb::ReadOptions(), jkeys, jkey_offs, jkey_lens,
jcolumn_family_handles);
}
/*
* Class: org_rocksdb_RocksDB
* Method: multiGet
* Signature: (JJ[[B[I[I)[[B
*/
jobjectArray Java_org_rocksdb_RocksDB_multiGet__JJ_3_3B_3I_3I(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jropt_handle,
jobjectArray jkeys, jintArray jkey_offs, jintArray jkey_lens) {
return multi_get_helper(env, jdb, reinterpret_cast<rocksdb::DB*>(jdb_handle),
*reinterpret_cast<rocksdb::ReadOptions*>(jropt_handle), jkeys, jkey_offs,
jkey_lens, nullptr);
}
/*
* Class: org_rocksdb_RocksDB
* Method: multiGet
* Signature: (JJ[[B[I[I[J)[[B
*/
jobjectArray Java_org_rocksdb_RocksDB_multiGet__JJ_3_3B_3I_3I_3J(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jropt_handle,
jobjectArray jkeys, jintArray jkey_offs, jintArray jkey_lens,
jlongArray jcolumn_family_handles) {
return multi_get_helper(env, jdb, reinterpret_cast<rocksdb::DB*>(jdb_handle),
*reinterpret_cast<rocksdb::ReadOptions*>(jropt_handle), jkeys, jkey_offs,
jkey_lens, jcolumn_family_handles);
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (J[BII[BII)I
*/
jint Java_org_rocksdb_RocksDB_get__J_3BII_3BII(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
return rocksdb_get_helper(env, reinterpret_cast<rocksdb::DB*>(jdb_handle),
rocksdb::ReadOptions(), nullptr, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (J[BII[BIIJ)I
*/
jint Java_org_rocksdb_RocksDB_get__J_3BII_3BIIJ(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len,
jlong jcf_handle) {
auto db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
return rocksdb_get_helper(env, db_handle, rocksdb::ReadOptions(), cf_handle,
jkey, jkey_off, jkey_len, jval, jval_off,
jval_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
// will never be evaluated
return 0;
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (JJ[BII[BII)I
*/
jint Java_org_rocksdb_RocksDB_get__JJ_3BII_3BII(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jlong jropt_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
return rocksdb_get_helper(
env, reinterpret_cast<rocksdb::DB*>(jdb_handle),
*reinterpret_cast<rocksdb::ReadOptions*>(jropt_handle), nullptr, jkey,
jkey_off, jkey_len, jval, jval_off, jval_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: (JJ[BII[BIIJ)I
*/
jint Java_org_rocksdb_RocksDB_get__JJ_3BII_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jropt_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len, jlong jcf_handle) {
auto db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto& ro_opt = *reinterpret_cast<rocksdb::ReadOptions*>(jropt_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
return rocksdb_get_helper(env, db_handle, ro_opt, cf_handle, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
// will never be evaluated
return 0;
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Delete()
void rocksdb_delete_helper(
JNIEnv* env, rocksdb::DB* db, const rocksdb::WriteOptions& write_options,
rocksdb::ColumnFamilyHandle* cf_handle, jbyteArray jkey, jint jkey_off,
jint jkey_len) {
jbyte* key = new jbyte[jkey_len];
env->GetByteArrayRegion(jkey, jkey_off, jkey_len, key);
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), jkey_len);
rocksdb::Status s;
if (cf_handle != nullptr) {
s = db->Delete(write_options, cf_handle, key_slice);
} else {
// backwards compatibility
s = db->Delete(write_options, key_slice);
}
// cleanup
delete [] key;
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
return;
}
/*
* Class: org_rocksdb_RocksDB
* Method: delete
* Signature: (J[BII)V
*/
void Java_org_rocksdb_RocksDB_delete__J_3BII(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
rocksdb_delete_helper(env, db, default_write_options, nullptr,
jkey, jkey_off, jkey_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: delete
* Signature: (J[BIIJ)V
*/
void Java_org_rocksdb_RocksDB_delete__J_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jlong jcf_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_delete_helper(env, db, default_write_options, cf_handle,
jkey, jkey_off, jkey_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: delete
* Signature: (JJ[BII)V
*/
void Java_org_rocksdb_RocksDB_delete__JJ_3BII(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jwrite_options, jbyteArray jkey, jint jkey_off, jint jkey_len) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto write_options = reinterpret_cast<rocksdb::WriteOptions*>(jwrite_options);
rocksdb_delete_helper(env, db, *write_options, nullptr, jkey, jkey_off,
jkey_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: delete
* Signature: (JJ[BIIJ)V
*/
void Java_org_rocksdb_RocksDB_delete__JJ_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jwrite_options, jbyteArray jkey, jint jkey_off, jint jkey_len,
jlong jcf_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto write_options = reinterpret_cast<rocksdb::WriteOptions*>(jwrite_options);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_delete_helper(env, db, *write_options, cf_handle, jkey, jkey_off,
jkey_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::SingleDelete()
void rocksdb_single_delete_helper(
JNIEnv* env, rocksdb::DB* db, const rocksdb::WriteOptions& write_options,
rocksdb::ColumnFamilyHandle* cf_handle, jbyteArray jkey, jint jkey_len) {
jbyte* key = env->GetByteArrayElements(jkey, 0);
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), jkey_len);
rocksdb::Status s;
if (cf_handle != nullptr) {
s = db->SingleDelete(write_options, cf_handle, key_slice);
} else {
// backwards compatibility
s = db->SingleDelete(write_options, key_slice);
}
// trigger java unref on key and value.
// by passing JNI_ABORT, it will simply release the reference without
// copying the result back to the java byte array.
env->ReleaseByteArrayElements(jkey, key, JNI_ABORT);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: singleDelete
* Signature: (J[BI)V
*/
void Java_org_rocksdb_RocksDB_singleDelete__J_3BI(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jkey, jint jkey_len) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
rocksdb_single_delete_helper(env, db, default_write_options, nullptr,
jkey, jkey_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: singleDelete
* Signature: (J[BIJ)V
*/
void Java_org_rocksdb_RocksDB_singleDelete__J_3BIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jkey, jint jkey_len, jlong jcf_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_single_delete_helper(env, db, default_write_options, cf_handle,
jkey, jkey_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: singleDelete
* Signature: (JJ[BIJ)V
*/
void Java_org_rocksdb_RocksDB_singleDelete__JJ_3BI(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jwrite_options, jbyteArray jkey, jint jkey_len) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto write_options = reinterpret_cast<rocksdb::WriteOptions*>(jwrite_options);
rocksdb_single_delete_helper(env, db, *write_options, nullptr, jkey,
jkey_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: singleDelete
* Signature: (JJ[BIJ)V
*/
void Java_org_rocksdb_RocksDB_singleDelete__JJ_3BIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jwrite_options, jbyteArray jkey, jint jkey_len,
jlong jcf_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto write_options = reinterpret_cast<rocksdb::WriteOptions*>(jwrite_options);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_single_delete_helper(env, db, *write_options, cf_handle, jkey,
jkey_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Merge
void rocksdb_merge_helper(JNIEnv* env, rocksdb::DB* db,
const rocksdb::WriteOptions& write_options,
rocksdb::ColumnFamilyHandle* cf_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len,
jbyteArray jval, jint jval_off, jint jval_len) {
jbyte* key = new jbyte[jkey_len];
env->GetByteArrayRegion(jkey, jkey_off, jkey_len, key);
jbyte* value = new jbyte[jkey_len];
env->GetByteArrayRegion(jval, jval_off, jval_len, value);
rocksdb::Slice key_slice(reinterpret_cast<char*>(key), jkey_len);
rocksdb::Slice value_slice(reinterpret_cast<char*>(value), jval_len);
rocksdb::Status s;
if (cf_handle != nullptr) {
s = db->Merge(write_options, cf_handle, key_slice, value_slice);
} else {
s = db->Merge(write_options, key_slice, value_slice);
}
// cleanup
delete [] value;
delete [] key;
if (s.ok()) {
return;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
/*
* Class: org_rocksdb_RocksDB
* Method: merge
* Signature: (J[BII[BII)V
*/
void Java_org_rocksdb_RocksDB_merge__J_3BII_3BII(JNIEnv* env, jobject jdb,
jlong jdb_handle,
jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
rocksdb_merge_helper(env, db, default_write_options, nullptr, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: merge
* Signature: (J[BII[BIIJ)V
*/
void Java_org_rocksdb_RocksDB_merge__J_3BII_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jbyteArray jkey, jint jkey_off,
jint jkey_len, jbyteArray jval, jint jval_off, jint jval_len,
jlong jcf_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
static const rocksdb::WriteOptions default_write_options =
rocksdb::WriteOptions();
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_merge_helper(env, db, default_write_options, cf_handle, jkey,
jkey_off, jkey_len, jval, jval_off, jval_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: merge
* Signature: (JJ[BII[BII)V
*/
void Java_org_rocksdb_RocksDB_merge__JJ_3BII_3BII(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jwrite_options_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto write_options = reinterpret_cast<rocksdb::WriteOptions*>(
jwrite_options_handle);
rocksdb_merge_helper(env, db, *write_options, nullptr, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len);
}
/*
* Class: org_rocksdb_RocksDB
* Method: merge
* Signature: (JJ[BII[BIIJ)V
*/
void Java_org_rocksdb_RocksDB_merge__JJ_3BII_3BIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jwrite_options_handle,
jbyteArray jkey, jint jkey_off, jint jkey_len, jbyteArray jval,
jint jval_off, jint jval_len, jlong jcf_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto write_options = reinterpret_cast<rocksdb::WriteOptions*>(
jwrite_options_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
if (cf_handle != nullptr) {
rocksdb_merge_helper(env, db, *write_options, cf_handle, jkey, jkey_off,
jkey_len, jval, jval_off, jval_len);
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env,
rocksdb::Status::InvalidArgument("Invalid ColumnFamilyHandle."));
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::~DB()
/*
* Class: org_rocksdb_RocksDB
* Method: disposeInternal
* Signature: (J)V
*/
void Java_org_rocksdb_RocksDB_disposeInternal(
JNIEnv* env, jobject java_db, jlong jhandle) {
delete reinterpret_cast<rocksdb::DB*>(jhandle);
}
jlong rocksdb_iterator_helper(
rocksdb::DB* db, rocksdb::ReadOptions read_options,
rocksdb::ColumnFamilyHandle* cf_handle) {
rocksdb::Iterator* iterator = nullptr;
if (cf_handle != nullptr) {
iterator = db->NewIterator(read_options, cf_handle);
} else {
iterator = db->NewIterator(read_options);
}
return reinterpret_cast<jlong>(iterator);
}
/*
* Class: org_rocksdb_RocksDB
* Method: iterator
* Signature: (J)J
*/
jlong Java_org_rocksdb_RocksDB_iterator__J(
JNIEnv* env, jobject jdb, jlong db_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(db_handle);
return rocksdb_iterator_helper(db, rocksdb::ReadOptions(),
nullptr);
}
/*
* Class: org_rocksdb_RocksDB
* Method: iterator
* Signature: (JJ)J
*/
jlong Java_org_rocksdb_RocksDB_iterator__JJ(
JNIEnv* env, jobject jdb, jlong db_handle,
jlong jread_options_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto& read_options = *reinterpret_cast<rocksdb::ReadOptions*>(
jread_options_handle);
return rocksdb_iterator_helper(db, read_options,
nullptr);
}
/*
* Class: org_rocksdb_RocksDB
* Method: iteratorCF
* Signature: (JJ)J
*/
jlong Java_org_rocksdb_RocksDB_iteratorCF__JJ(
JNIEnv* env, jobject jdb, jlong db_handle, jlong jcf_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
return rocksdb_iterator_helper(db, rocksdb::ReadOptions(),
cf_handle);
}
/*
* Class: org_rocksdb_RocksDB
* Method: iteratorCF
* Signature: (JJJ)J
*/
jlong Java_org_rocksdb_RocksDB_iteratorCF__JJJ(
JNIEnv* env, jobject jdb, jlong db_handle, jlong jcf_handle,
jlong jread_options_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
auto& read_options = *reinterpret_cast<rocksdb::ReadOptions*>(
jread_options_handle);
return rocksdb_iterator_helper(db, read_options,
cf_handle);
}
/*
* Class: org_rocksdb_RocksDB
* Method: iterators
* Signature: (J[JJ)[J
*/
jlongArray Java_org_rocksdb_RocksDB_iterators(
JNIEnv* env, jobject jdb, jlong db_handle,
jlongArray jcolumn_family_handles, jlong jread_options_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto& read_options = *reinterpret_cast<rocksdb::ReadOptions*>(
jread_options_handle);
std::vector<rocksdb::ColumnFamilyHandle*> cf_handles;
if (jcolumn_family_handles != nullptr) {
jsize len_cols = env->GetArrayLength(jcolumn_family_handles);
jlong* jcfh = env->GetLongArrayElements(jcolumn_family_handles, NULL);
for (int i = 0; i < len_cols; i++) {
auto* cf_handle =
reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcfh[i]);
cf_handles.push_back(cf_handle);
}
env->ReleaseLongArrayElements(jcolumn_family_handles, jcfh, JNI_ABORT);
}
std::vector<rocksdb::Iterator*> iterators;
rocksdb::Status s = db->NewIterators(read_options,
cf_handles, &iterators);
if (s.ok()) {
jlongArray jLongArray =
env->NewLongArray(static_cast<jsize>(iterators.size()));
for (std::vector<rocksdb::Iterator*>::size_type i = 0;
i < iterators.size(); i++) {
env->SetLongArrayRegion(jLongArray, static_cast<jsize>(i), 1,
reinterpret_cast<const jlong*>(&iterators[i]));
}
return jLongArray;
} else {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return NULL;
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: getDefaultColumnFamily
* Signature: (J)J
*/
jlong Java_org_rocksdb_RocksDB_getDefaultColumnFamily(
JNIEnv* env, jobject jobj, jlong jdb_handle) {
auto* db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* cf_handle = db_handle->DefaultColumnFamily();
return reinterpret_cast<jlong>(cf_handle);
}
/*
* Class: org_rocksdb_RocksDB
* Method: createColumnFamily
* Signature: (J[BJ)J
*/
jlong Java_org_rocksdb_RocksDB_createColumnFamily(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jbyteArray jcolumn_name, jlong jcolumn_options) {
rocksdb::ColumnFamilyHandle* handle;
auto db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
jbyte* cfname = env->GetByteArrayElements(jcolumn_name, 0);
const int len = env->GetArrayLength(jcolumn_name);
auto* cfOptions =
reinterpret_cast<rocksdb::ColumnFamilyOptions*>(jcolumn_options);
rocksdb::Status s = db_handle->CreateColumnFamily(
*cfOptions, std::string(reinterpret_cast<char *>(cfname), len), &handle);
env->ReleaseByteArrayElements(jcolumn_name, cfname, 0);
if (s.ok()) {
return reinterpret_cast<jlong>(handle);
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return 0;
}
/*
* Class: org_rocksdb_RocksDB
* Method: dropColumnFamily
* Signature: (JJ)V;
*/
void Java_org_rocksdb_RocksDB_dropColumnFamily(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jcf_handle) {
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
auto db_handle = reinterpret_cast<rocksdb::DB*>(jdb_handle);
rocksdb::Status s = db_handle->DropColumnFamily(cf_handle);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Method: getSnapshot
* Signature: (J)J
*/
jlong Java_org_rocksdb_RocksDB_getSnapshot(
JNIEnv* env, jobject jdb, jlong db_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(db_handle);
const rocksdb::Snapshot* snapshot = db->GetSnapshot();
return reinterpret_cast<jlong>(snapshot);
}
/*
* Method: releaseSnapshot
* Signature: (JJ)V
*/
void Java_org_rocksdb_RocksDB_releaseSnapshot(
JNIEnv* env, jobject jdb, jlong db_handle, jlong snapshot_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto snapshot = reinterpret_cast<rocksdb::Snapshot*>(snapshot_handle);
db->ReleaseSnapshot(snapshot);
}
/*
* Class: org_rocksdb_RocksDB
* Method: getProperty0
* Signature: (JLjava/lang/String;I)Ljava/lang/String;
*/
jstring Java_org_rocksdb_RocksDB_getProperty0__JLjava_lang_String_2I(
JNIEnv* env, jobject jdb, jlong db_handle, jstring jproperty,
jint jproperty_len) {
auto db = reinterpret_cast<rocksdb::DB*>(db_handle);
const char* property = env->GetStringUTFChars(jproperty, 0);
rocksdb::Slice property_slice(property, jproperty_len);
std::string property_value;
bool retCode = db->GetProperty(property_slice, &property_value);
env->ReleaseStringUTFChars(jproperty, property);
if (!retCode) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, rocksdb::Status::NotFound());
}
return env->NewStringUTF(property_value.data());
}
/*
* Class: org_rocksdb_RocksDB
* Method: getProperty0
* Signature: (JJLjava/lang/String;I)Ljava/lang/String;
*/
jstring Java_org_rocksdb_RocksDB_getProperty0__JJLjava_lang_String_2I(
JNIEnv* env, jobject jdb, jlong db_handle, jlong jcf_handle,
jstring jproperty, jint jproperty_len) {
auto db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
const char* property = env->GetStringUTFChars(jproperty, 0);
rocksdb::Slice property_slice(property, jproperty_len);
std::string property_value;
bool retCode = db->GetProperty(cf_handle, property_slice, &property_value);
env->ReleaseStringUTFChars(jproperty, property);
if (!retCode) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, rocksdb::Status::NotFound());
}
return env->NewStringUTF(property_value.data());
}
/*
* Class: org_rocksdb_RocksDB
* Method: getLongProperty
* Signature: (JLjava/lang/String;I)L;
*/
jlong Java_org_rocksdb_RocksDB_getLongProperty__JLjava_lang_String_2I(
JNIEnv* env, jobject jdb, jlong db_handle, jstring jproperty,
jint jproperty_len) {
auto db = reinterpret_cast<rocksdb::DB*>(db_handle);
const char* property = env->GetStringUTFChars(jproperty, 0);
rocksdb::Slice property_slice(property, jproperty_len);
uint64_t property_value = 0;
bool retCode = db->GetIntProperty(property_slice, &property_value);
env->ReleaseStringUTFChars(jproperty, property);
if (!retCode) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, rocksdb::Status::NotFound());
}
return property_value;
}
/*
* Class: org_rocksdb_RocksDB
* Method: getLongProperty
* Signature: (JJLjava/lang/String;I)L;
*/
jlong Java_org_rocksdb_RocksDB_getLongProperty__JJLjava_lang_String_2I(
JNIEnv* env, jobject jdb, jlong db_handle, jlong jcf_handle,
jstring jproperty, jint jproperty_len) {
auto db = reinterpret_cast<rocksdb::DB*>(db_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
const char* property = env->GetStringUTFChars(jproperty, 0);
rocksdb::Slice property_slice(property, jproperty_len);
uint64_t property_value;
bool retCode = db->GetIntProperty(cf_handle, property_slice, &property_value);
env->ReleaseStringUTFChars(jproperty, property);
if (!retCode) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, rocksdb::Status::NotFound());
}
return property_value;
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::Flush
void rocksdb_flush_helper(
JNIEnv* env, rocksdb::DB* db, const rocksdb::FlushOptions& flush_options,
rocksdb::ColumnFamilyHandle* column_family_handle) {
rocksdb::Status s;
if (column_family_handle != nullptr) {
s = db->Flush(flush_options, column_family_handle);
} else {
s = db->Flush(flush_options);
}
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: flush
* Signature: (JJ)V
*/
void Java_org_rocksdb_RocksDB_flush__JJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jflush_options) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto flush_options = reinterpret_cast<rocksdb::FlushOptions*>(jflush_options);
rocksdb_flush_helper(env, db, *flush_options, nullptr);
}
/*
* Class: org_rocksdb_RocksDB
* Method: flush
* Signature: (JJJ)V
*/
void Java_org_rocksdb_RocksDB_flush__JJJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jlong jflush_options, jlong jcf_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto flush_options = reinterpret_cast<rocksdb::FlushOptions*>(jflush_options);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
rocksdb_flush_helper(env, db, *flush_options, cf_handle);
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::CompactRange - Full
void rocksdb_compactrange_helper(JNIEnv* env, rocksdb::DB* db,
rocksdb::ColumnFamilyHandle* cf_handle, jboolean jreduce_level,
jint jtarget_level, jint jtarget_path_id) {
rocksdb::Status s;
rocksdb::CompactRangeOptions compact_options;
compact_options.change_level = jreduce_level;
compact_options.target_level = jtarget_level;
compact_options.target_path_id = static_cast<uint32_t>(jtarget_path_id);
if (cf_handle != nullptr) {
s = db->CompactRange(compact_options, cf_handle, nullptr, nullptr);
} else {
// backwards compatibility
s = db->CompactRange(compact_options, nullptr, nullptr);
}
if (s.ok()) {
return;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
/*
* Class: org_rocksdb_RocksDB
* Method: compactRange0
* Signature: (JZII)V
*/
void Java_org_rocksdb_RocksDB_compactRange0__JZII(JNIEnv* env,
jobject jdb, jlong jdb_handle, jboolean jreduce_level,
jint jtarget_level, jint jtarget_path_id) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
rocksdb_compactrange_helper(env, db, nullptr, jreduce_level,
jtarget_level, jtarget_path_id);
}
/*
* Class: org_rocksdb_RocksDB
* Method: compactRange
* Signature: (JZIIJ)V
*/
void Java_org_rocksdb_RocksDB_compactRange__JZIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle,
jboolean jreduce_level, jint jtarget_level,
jint jtarget_path_id, jlong jcf_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
rocksdb_compactrange_helper(env, db, cf_handle, jreduce_level,
jtarget_level, jtarget_path_id);
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::CompactRange - Range
void rocksdb_compactrange_helper(JNIEnv* env, rocksdb::DB* db,
rocksdb::ColumnFamilyHandle* cf_handle, jbyteArray jbegin, jint jbegin_len,
jbyteArray jend, jint jend_len, jboolean jreduce_level, jint jtarget_level,
jint jtarget_path_id) {
jbyte* begin = env->GetByteArrayElements(jbegin, 0);
jbyte* end = env->GetByteArrayElements(jend, 0);
const rocksdb::Slice begin_slice(reinterpret_cast<char*>(begin), jbegin_len);
const rocksdb::Slice end_slice(reinterpret_cast<char*>(end), jend_len);
rocksdb::Status s;
rocksdb::CompactRangeOptions compact_options;
compact_options.change_level = jreduce_level;
compact_options.target_level = jtarget_level;
compact_options.target_path_id = static_cast<uint32_t>(jtarget_path_id);
if (cf_handle != nullptr) {
s = db->CompactRange(compact_options, cf_handle, &begin_slice, &end_slice);
} else {
// backwards compatibility
s = db->CompactRange(compact_options, &begin_slice, &end_slice);
}
env->ReleaseByteArrayElements(jbegin, begin, JNI_ABORT);
env->ReleaseByteArrayElements(jend, end, JNI_ABORT);
if (s.ok()) {
return;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
/*
* Class: org_rocksdb_RocksDB
* Method: compactRange0
* Signature: (J[BI[BIZII)V
*/
void Java_org_rocksdb_RocksDB_compactRange0__J_3BI_3BIZII(JNIEnv* env,
jobject jdb, jlong jdb_handle, jbyteArray jbegin, jint jbegin_len,
jbyteArray jend, jint jend_len, jboolean jreduce_level,
jint jtarget_level, jint jtarget_path_id) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
rocksdb_compactrange_helper(env, db, nullptr, jbegin, jbegin_len,
jend, jend_len, jreduce_level, jtarget_level, jtarget_path_id);
}
/*
* Class: org_rocksdb_RocksDB
* Method: compactRange
* Signature: (JJ[BI[BIZII)V
*/
void Java_org_rocksdb_RocksDB_compactRange__J_3BI_3BIZIIJ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jbyteArray jbegin,
jint jbegin_len, jbyteArray jend, jint jend_len,
jboolean jreduce_level, jint jtarget_level,
jint jtarget_path_id, jlong jcf_handle) {
auto db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
rocksdb_compactrange_helper(env, db, cf_handle, jbegin, jbegin_len,
jend, jend_len, jreduce_level, jtarget_level, jtarget_path_id);
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::PauseBackgroundWork
/*
* Class: org_rocksdb_RocksDB
* Method: pauseBackgroundWork
* Signature: (J)V
*/
void Java_org_rocksdb_RocksDB_pauseBackgroundWork(
JNIEnv* env, jobject jobj, jlong jdb_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto s = db->PauseBackgroundWork();
if (s.ok()) {
return;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::ContinueBackgroundWork
/*
* Class: org_rocksdb_RocksDB
* Method: continueBackgroundWork
* Signature: (J)V
*/
void Java_org_rocksdb_RocksDB_continueBackgroundWork(
JNIEnv* env, jobject jobj, jlong jdb_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto s = db->ContinueBackgroundWork();
if (s.ok()) {
return;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::GetLatestSequenceNumber
/*
* Class: org_rocksdb_RocksDB
* Method: getLatestSequenceNumber
* Signature: (J)V
*/
jlong Java_org_rocksdb_RocksDB_getLatestSequenceNumber(JNIEnv* env,
jobject jdb, jlong jdb_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
return db->GetLatestSequenceNumber();
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB enable/disable file deletions
/*
* Class: org_rocksdb_RocksDB
* Method: enableFileDeletions
* Signature: (J)V
*/
void Java_org_rocksdb_RocksDB_disableFileDeletions(JNIEnv* env,
jobject jdb, jlong jdb_handle) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
rocksdb::Status s = db->DisableFileDeletions();
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: enableFileDeletions
* Signature: (JZ)V
*/
void Java_org_rocksdb_RocksDB_enableFileDeletions(JNIEnv* env,
jobject jdb, jlong jdb_handle, jboolean jforce) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
rocksdb::Status s = db->EnableFileDeletions(jforce);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::GetUpdatesSince
/*
* Class: org_rocksdb_RocksDB
* Method: getUpdatesSince
* Signature: (JJ)J
*/
jlong Java_org_rocksdb_RocksDB_getUpdatesSince(JNIEnv* env,
jobject jdb, jlong jdb_handle, jlong jsequence_number) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
rocksdb::SequenceNumber sequence_number =
static_cast<rocksdb::SequenceNumber>(jsequence_number);
std::unique_ptr<rocksdb::TransactionLogIterator> iter;
rocksdb::Status s = db->GetUpdatesSince(sequence_number, &iter);
if (s.ok()) {
return reinterpret_cast<jlong>(iter.release());
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return 0;
}
/*
* Class: org_rocksdb_RocksDB
* Method: setOptions
* Signature: (JJ[Ljava/lang/String;[Ljava/lang/String;)V
*/
void Java_org_rocksdb_RocksDB_setOptions(JNIEnv* env, jobject jdb,
jlong jdb_handle, jlong jcf_handle, jobjectArray jkeys,
jobjectArray jvalues) {
std::unordered_map<std::string, std::string> options_map;
const jsize len = env->GetArrayLength(jkeys);
assert(len == env->GetArrayLength(jvalues));
for (int i = 0; i < len; i++) {
jobject jobj_key = env->GetObjectArrayElement(jkeys, i);
jobject jobj_value = env->GetObjectArrayElement(jvalues, i);
jstring jkey = reinterpret_cast<jstring>(jobj_key);
jstring jval = reinterpret_cast<jstring>(jobj_value);
const char* key = env->GetStringUTFChars(jkey, NULL);
const char* value = env->GetStringUTFChars(jval, NULL);
std::string s_key(key);
std::string s_value(value);
env->ReleaseStringUTFChars(jkey, key);
env->ReleaseStringUTFChars(jval, value);
env->DeleteLocalRef(jobj_key);
env->DeleteLocalRef(jobj_value);
options_map[s_key] = s_value;
}
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
auto* cf_handle = reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
db->SetOptions(cf_handle, options_map);
}
//////////////////////////////////////////////////////////////////////////////
// rocksdb::DB::AddFile
void add_file_helper(JNIEnv* env, const jobjectArray& jfile_path_list,
int file_path_list_len,
std::vector<std::string>* file_path_list) {
for (int i = 0; i < file_path_list_len; i++) {
jstring jfile_path =
static_cast<jstring>(env->GetObjectArrayElement(jfile_path_list, i));
const char* file_path = env->GetStringUTFChars(jfile_path, NULL);
file_path_list->push_back(std::string(file_path));
env->ReleaseStringUTFChars(jfile_path, file_path);
env->DeleteLocalRef(jfile_path);
}
}
/*
* Class: org_rocksdb_RocksDB
* Method: addFile
* Signature: (JJ[Ljava/lang/String;IZ)V
*/
void Java_org_rocksdb_RocksDB_addFile__JJ_3Ljava_lang_String_2IZ(
JNIEnv* env, jobject jdb, jlong jdb_handle, jlong jcf_handle,
jobjectArray jfile_path_list, jint jfile_path_list_len,
jboolean jmove_file) {
auto* db = reinterpret_cast<rocksdb::DB*>(jdb_handle);
std::vector<std::string> file_path_list;
add_file_helper(env, jfile_path_list, static_cast<int>(jfile_path_list_len),
&file_path_list);
auto* column_family =
reinterpret_cast<rocksdb::ColumnFamilyHandle*>(jcf_handle);
rocksdb::IngestExternalFileOptions ifo;
ifo.move_files = static_cast<bool>(jmove_file);
ifo.snapshot_consistency = true;
ifo.allow_global_seqno = false;
ifo.allow_blocking_flush = false;
rocksdb::Status s =
db->IngestExternalFile(column_family, file_path_list, ifo);
if (!s.ok()) {
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
}