Method ReadFilter

src/leveldb/table/table.cc:113–134

}

void Table::ReadFilter(const Slice& filter_handle_value) {
  Slice v = filter_handle_value;
  BlockHandle filter_handle;
  if (!filter_handle.DecodeFrom(&v).ok()) {
    return;
  }

  // We might want to unify with ReadBlock() if we start
  // requiring checksum verification in Table::Open.
  ReadOptions opt;
  if (rep_->options.paranoid_checks) {
    opt.verify_checksums = true;
  }
  BlockContents block;
  if (!ReadBlock(rep_->file, opt, filter_handle, &block).ok()) {
    return;
  }
  if (block.heap_allocated) {
    rep_->filter_data = block.data.data();  // Will need to delete later
  }
  rep_->filter = new FilterBlockReader(rep_->options.filter_policy, block.data);
}

Table::~Table() { delete rep_; }