Summary: A Simple plain table format. No block structure. When creating the table reader, scanning the full table to create indexes. Test Plan:Add unit test Reviewers:haobo,dhruba,kailiu CC: Task ID: # Blame Rev:
78 lines
1.8 KiB
C++
78 lines
1.8 KiB
C++
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include "table/plain_table_builder.h"
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#include <assert.h>
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#include <map>
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#include "rocksdb/comparator.h"
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#include "rocksdb/env.h"
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#include "rocksdb/filter_policy.h"
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#include "rocksdb/options.h"
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#include "table/block_builder.h"
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#include "table/filter_block.h"
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#include "table/format.h"
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#include "util/coding.h"
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#include "util/crc32c.h"
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#include "util/stop_watch.h"
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namespace rocksdb {
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PlainTableBuilder::PlainTableBuilder(const Options& options,
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WritableFile* file,
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int user_key_size, int key_prefix_len) :
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options_(options), file_(file), user_key_size_(user_key_size),
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key_prefix_len_(key_prefix_len) {
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}
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PlainTableBuilder::~PlainTableBuilder() {
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}
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Status PlainTableBuilder::ChangeOptions(const Options& options) {
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return Status::OK();
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}
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void PlainTableBuilder::Add(const Slice& key, const Slice& value) {
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assert((int) key.size() == GetInternalKeyLength());
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// Write key-value pair
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file_->Append(key);
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offset_ += GetInternalKeyLength();
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std::string size;
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int value_size = value.size();
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PutFixed32(&size, value_size);
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Slice sizeSlice(size);
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file_->Append(sizeSlice);
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file_->Append(value);
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offset_ += value_size + 4;
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num_entries_++;
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}
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Status PlainTableBuilder::status() const {
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return Status::OK();
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}
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Status PlainTableBuilder::Finish() {
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assert(!closed_);
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closed_ = true;
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return Status::OK();
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}
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void PlainTableBuilder::Abandon() {
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closed_ = true;
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}
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uint64_t PlainTableBuilder::NumEntries() const {
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return num_entries_;
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}
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uint64_t PlainTableBuilder::FileSize() const {
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return offset_;
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}
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} // namespace rocksdb
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