Method parse

src/Interpreters/DDLTask.cpp:116–160

}

void DDLLogEntry::parse(const String & data)
{
    ReadBufferFromString rb(data);

    rb >> "version: " >> version >> "\n";
    assertVersion();

    Strings host_id_strings;
    rb >> "query: " >> escape >> query >> "\n";
    if (version == 1)
    {
        rb >> "hosts: " >> host_id_strings >> "\n";

        if (!rb.eof())
            rb >> "initiator: " >> initiator >> "\n";
        else
            initiator.clear();
    }
    else if (version == 2)
    {

        if (!rb.eof() && *rb.position() == 'h')
            rb >> "hosts: " >> host_id_strings >> "\n";
        if (!rb.eof() && *rb.position() == 'i')
            rb >> "initiator: " >> initiator >> "\n";
        if (!rb.eof() && *rb.position() == 's')
        {
            String settings_str;
            rb >> "settings: " >> settings_str >> "\n";
            ParserSetQuery parser{true};
            constexpr UInt64 max_size = 4096;
            constexpr UInt64 max_depth = 16;
            ASTPtr settings_ast = parseQuery(parser, settings_str, max_size, max_depth);
            settings.emplace(std::move(settings_ast->as<ASTSetQuery>()->changes));
        }
    }

    assertEOF(rb);

    if (!host_id_strings.empty())
    {
        hosts.resize(host_id_strings.size());
        std::transform(host_id_strings.begin(), host_id_strings.end(), hosts.begin(), HostID::fromString);
    }
}


void DDLTaskBase::parseQueryFromEntry(ContextPtr context)