Add a java api for rocksdb::Options, currently only supports create_if_missing.

Summary:
* [java] Add a java api for rocksdb::Options, currently only supports create_if_missing.
* [java] Add a test for RocksDBException in RocksDBSample.

Test Plan: make jtest

Reviewers: haobo, sdong

Reviewed By: haobo

CC: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D17385

java/rocksjni/options.cc

@@ -0,0 +1,57 @@
+// 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 <stdio.h>
+#include <stdlib.h>
+#include <jni.h>
+#include <string>
+
+#include "include/org_rocksdb_Options.h"
+#include "rocksjni/portal.h"
+#include "rocksdb/db.h"
+
+/*
+ * Class:     org_rocksdb_Options
+ * Method:    newOptions
+ * Signature: ()V
+ */
+void Java_org_rocksdb_Options_newOptions(JNIEnv* env, jobject jobj) {
+  rocksdb::Options* op = new rocksdb::Options();
+  rocksdb::OptionsJni::setHandle(env, jobj, op);
+}
+
+/*
+ * Class:     org_rocksdb_Options
+ * Method:    dispose0
+ * Signature: ()V
+ */
+void Java_org_rocksdb_Options_dispose0(JNIEnv* env, jobject jobj) {
+  rocksdb::Options* op = rocksdb::OptionsJni::getHandle(env, jobj);
+  delete op;
+
+  rocksdb::OptionsJni::setHandle(env, jobj, op);
+}
+
+/*
+ * Class:     org_rocksdb_Options
+ * Method:    setCreateIfMissing
+ * Signature: (JZ)V
+ */
+void Java_org_rocksdb_Options_setCreateIfMissing(
+    JNIEnv* env, jobject jobj, jlong jhandle, jboolean flag) {
+  reinterpret_cast<rocksdb::Options*>(jhandle)->create_if_missing = flag;
+}
+
+/*
+ * Class:     org_rocksdb_Options
+ * Method:    createIfMissing
+ * Signature: (J)Z
+ */
+jboolean Java_org_rocksdb_Options_createIfMissing(
+    JNIEnv* env, jobject jobj, jlong jhandle) {
+  return reinterpret_cast<rocksdb::Options*>(jhandle)->create_if_missing;
+}