5ec38c3d3e
Summary: Fix a bug in RocksDBSample.java and minor code improvement in rocksjni.cc. Test Plan: make jni make jtest Reviewers: haobo, sdong Reviewed By: haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D17325
80 lines
2.4 KiB
Java
80 lines
2.4 KiB
Java
// 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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import java.util.*;
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import java.lang.*;
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import org.rocksdb.*;
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import java.io.IOException;
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public class RocksDBSample {
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static {
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System.loadLibrary("rocksdbjni");
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}
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public static void main(String[] args) {
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if (args.length < 1) {
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System.out.println("usage: RocksDBSample db_path");
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return;
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}
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String db_path = args[0];
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System.out.println("RocksDBSample");
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try {
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RocksDB db = RocksDB.open(db_path);
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db.put("hello".getBytes(), "world".getBytes());
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byte[] value = db.get("hello".getBytes());
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System.out.format("Get('hello') = %s\n",
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new String(value));
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for (int i = 1; i <= 9; ++i) {
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for (int j = 1; j <= 9; ++j) {
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db.put(String.format("%dx%d", i, j).getBytes(),
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String.format("%d", i * j).getBytes());
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}
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}
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for (int i = 1; i <= 9; ++i) {
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for (int j = 1; j <= 9; ++j) {
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System.out.format("%s ", new String(db.get(
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String.format("%dx%d", i, j).getBytes())));
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}
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System.out.println("");
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}
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value = db.get("1x1".getBytes());
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assert(value != null);
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value = db.get("world".getBytes());
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assert(value == null);
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byte[] testKey = "asdf".getBytes();
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byte[] testValue =
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"asdfghjkl;'?><MNBVCXZQWERTYUIOP{+_)(*&^%$#@".getBytes();
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db.put(testKey, testValue);
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byte[] testResult = db.get(testKey);
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assert(testResult != null);
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assert(Arrays.equals(testValue, testResult));
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assert(new String(testValue).equals(new String(testResult)));
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byte[] insufficientArray = new byte[10];
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byte[] enoughArray = new byte[50];
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int len;
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len = db.get(testKey, insufficientArray);
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assert(len > insufficientArray.length);
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len = db.get("asdfjkl;".getBytes(), enoughArray);
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assert(len == RocksDB.NOT_FOUND);
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len = db.get(testKey, enoughArray);
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assert(len == testValue.length);
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try {
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db.close();
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} catch (IOException e) {
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System.err.println(e);
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}
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} catch (RocksDBException e) {
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System.err.println(e);
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}
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}
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}
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