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rocksdb

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RocksDB for Erlang

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rocksdb deps rocksdb java rocksjni merge_operator.cc
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deps/rocksdb/java/rocksjni/merge_operator.cc 

// Copyright (c) 2014, Vlad Balan (vlad.gm@gmail.com).  All rights reserved.

//  This source code is licensed under both the GPLv2 (found in the

//  COPYING file in the root directory) and Apache 2.0 License

//  (found in the LICENSE.Apache file in the root directory).

//

// This file implements the "bridge" between Java and C++

// for rocksdb::MergeOperator.



#include <jni.h>

#include <stdio.h>

#include <stdlib.h>

#include <memory>

#include <string>



#include "include/org_rocksdb_StringAppendOperator.h"

#include "rocksdb/db.h"

#include "rocksdb/memtablerep.h"

#include "rocksdb/merge_operator.h"

#include "rocksdb/options.h"

#include "rocksdb/slice_transform.h"

#include "rocksdb/statistics.h"

#include "rocksdb/table.h"

#include "rocksjni/portal.h"

#include "utilities/merge_operators.h"



/*

 * Class:     org_rocksdb_StringAppendOperator

 * Method:    newSharedStringAppendOperator

 * Signature: (C)J

 */

jlong Java_org_rocksdb_StringAppendOperator_newSharedStringAppendOperator(

    JNIEnv* /*env*/, jclass /*jclazz*/, jchar jdelim) {

  auto* sptr_string_append_op = new std::shared_ptr<rocksdb::MergeOperator>(

      rocksdb::MergeOperators::CreateStringAppendOperator((char)jdelim));

  return reinterpret_cast<jlong>(sptr_string_append_op);

}



/*

 * Class:     org_rocksdb_StringAppendOperator

 * Method:    disposeInternal

 * Signature: (J)V

 */

void Java_org_rocksdb_StringAppendOperator_disposeInternal(JNIEnv* /*env*/,

                                                           jobject /*jobj*/,

                                                           jlong jhandle) {

  auto* sptr_string_append_op =

      reinterpret_cast<std::shared_ptr<rocksdb::MergeOperator>*>(jhandle);

  delete sptr_string_append_op;  // delete std::shared_ptr

}