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#include <Core/MySQL/PacketsProtocolText.h>
#include <IO/WriteBufferFromString.h>
#include <IO/ReadHelpers.h>
#include <IO/WriteHelpers.h>
namespace DB
{
namespace MySQLProtocol
{
namespace ProtocolText
{
ResultSetRow::ResultSetRow(const Serializations & serializations, const Columns & columns_, int row_num_)
: columns(columns_), row_num(row_num_)
{
for (size_t i = 0; i < columns.size(); ++i)
{
if (columns[i]->isNullAt(row_num))
{
payload_size += 1;
serialized.emplace_back("\xfb");
}
else
{
WriteBufferFromOwnString ostr;
serializations[i]->serializeText(*columns[i], row_num, ostr, FormatSettings());
payload_size += getLengthEncodedStringSize(ostr.str());
serialized.push_back(std::move(ostr.str()));
}
}
}
size_t ResultSetRow::getPayloadSize() const
{
return payload_size;
}
void ResultSetRow::writePayloadImpl(WriteBuffer & buffer) const
{
for (size_t i = 0; i < columns.size(); ++i)
{
if (columns[i]->isNullAt(row_num))
buffer.write(serialized[i].data(), 1);
else
writeLengthEncodedString(serialized[i], buffer);
}
}
void ComFieldList::readPayloadImpl(ReadBuffer & payload)
{
// Command byte has been already read from payload.
readNullTerminated(table, payload);
readStringUntilEOF(field_wildcard, payload);
}
ColumnDefinition::ColumnDefinition()
: character_set(0x00), column_length(0), column_type(MYSQL_TYPE_DECIMAL), flags(0x00)
{
}
ColumnDefinition::ColumnDefinition(
String schema_, String table_, String org_table_, String name_, String org_name_, uint16_t character_set_, uint32_t column_length_,
ColumnType column_type_, uint16_t flags_, uint8_t decimals_, bool with_defaults_)
: schema(std::move(schema_)), table(std::move(table_)), org_table(std::move(org_table_)), name(std::move(name_)),
org_name(std::move(org_name_)), character_set(character_set_), column_length(column_length_), column_type(column_type_),
flags(flags_), decimals(decimals_), is_comm_field_list_response(with_defaults_)
{
}
ColumnDefinition::ColumnDefinition(
String name_, uint16_t character_set_, uint32_t column_length_, ColumnType column_type_, uint16_t flags_, uint8_t decimals_)
: ColumnDefinition("", "", "", std::move(name_), "", character_set_, column_length_, column_type_, flags_, decimals_)
{
}
size_t ColumnDefinition::getPayloadSize() const
{
return 12 +
getLengthEncodedStringSize("def") +
getLengthEncodedStringSize(schema) +
getLengthEncodedStringSize(table) +
getLengthEncodedStringSize(org_table) +
getLengthEncodedStringSize(name) +
getLengthEncodedStringSize(org_name) +
getLengthEncodedNumberSize(next_length) +
is_comm_field_list_response;
}
void ColumnDefinition::readPayloadImpl(ReadBuffer & payload)
{
String def;
readLengthEncodedString(def, payload);
assert(def == "def");
readLengthEncodedString(schema, payload);
readLengthEncodedString(table, payload);
readLengthEncodedString(org_table, payload);
readLengthEncodedString(name, payload);
readLengthEncodedString(org_name, payload);
next_length = readLengthEncodedNumber(payload);
payload.readStrict(reinterpret_cast<char *>(&character_set), 2);
payload.readStrict(reinterpret_cast<char *>(&column_length), 4);
payload.readStrict(reinterpret_cast<char *>(&column_type), 1);
payload.readStrict(reinterpret_cast<char *>(&flags), 2);
payload.readStrict(reinterpret_cast<char *>(&decimals), 1);
payload.ignore(2);
}
void ColumnDefinition::writePayloadImpl(WriteBuffer & buffer) const
{
writeLengthEncodedString(std::string("def"), buffer); /// always "def"
writeLengthEncodedString(schema, buffer);
writeLengthEncodedString(table, buffer);
writeLengthEncodedString(org_table, buffer);
writeLengthEncodedString(name, buffer);
writeLengthEncodedString(org_name, buffer);
writeLengthEncodedNumber(next_length, buffer);
buffer.write(reinterpret_cast<const char *>(&character_set), 2);
buffer.write(reinterpret_cast<const char *>(&column_length), 4);
buffer.write(reinterpret_cast<const char *>(&column_type), 1);
buffer.write(reinterpret_cast<const char *>(&flags), 2);
buffer.write(reinterpret_cast<const char *>(&decimals), 1);
writeChar(0x0, 2, buffer);
if (is_comm_field_list_response)
{
/// We should write length encoded int with string size
/// followed by string with some "default values" (possibly it's column defaults).
/// But we just send NULL for simplicity.
writeChar(0xfb, buffer);
}
}
ColumnDefinition getColumnDefinition(const String & column_name, const TypeIndex type_index)
{
ColumnType column_type;
CharacterSet charset = CharacterSet::binary;
int flags = 0;
switch (type_index)
{
case TypeIndex::UInt8:
column_type = ColumnType::MYSQL_TYPE_TINY;
flags = ColumnDefinitionFlags::BINARY_FLAG | ColumnDefinitionFlags::UNSIGNED_FLAG;
break;
case TypeIndex::UInt16:
column_type = ColumnType::MYSQL_TYPE_SHORT;
flags = ColumnDefinitionFlags::BINARY_FLAG | ColumnDefinitionFlags::UNSIGNED_FLAG;
break;
case TypeIndex::UInt32:
column_type = ColumnType::MYSQL_TYPE_LONG;
flags = ColumnDefinitionFlags::BINARY_FLAG | ColumnDefinitionFlags::UNSIGNED_FLAG;
break;
case TypeIndex::UInt64:
column_type = ColumnType::MYSQL_TYPE_LONGLONG;
flags = ColumnDefinitionFlags::BINARY_FLAG | ColumnDefinitionFlags::UNSIGNED_FLAG;
break;
case TypeIndex::Int8:
column_type = ColumnType::MYSQL_TYPE_TINY;
flags = ColumnDefinitionFlags::BINARY_FLAG;
break;
case TypeIndex::Int16:
column_type = ColumnType::MYSQL_TYPE_SHORT;
flags = ColumnDefinitionFlags::BINARY_FLAG;
break;
case TypeIndex::Int32:
column_type = ColumnType::MYSQL_TYPE_LONG;
flags = ColumnDefinitionFlags::BINARY_FLAG;
break;
case TypeIndex::Int64:
column_type = ColumnType::MYSQL_TYPE_LONGLONG;
flags = ColumnDefinitionFlags::BINARY_FLAG;
break;
case TypeIndex::Float32:
column_type = ColumnType::MYSQL_TYPE_FLOAT;
flags = ColumnDefinitionFlags::BINARY_FLAG;
break;
case TypeIndex::Float64:
column_type = ColumnType::MYSQL_TYPE_DOUBLE;
flags = ColumnDefinitionFlags::BINARY_FLAG;
break;
case TypeIndex::Date:
column_type = ColumnType::MYSQL_TYPE_DATE;
flags = ColumnDefinitionFlags::BINARY_FLAG;
break;
case TypeIndex::DateTime:
column_type = ColumnType::MYSQL_TYPE_DATETIME;
flags = ColumnDefinitionFlags::BINARY_FLAG;
break;
case TypeIndex::String:
case TypeIndex::FixedString:
column_type = ColumnType::MYSQL_TYPE_STRING;
charset = CharacterSet::utf8_general_ci;
break;
default:
column_type = ColumnType::MYSQL_TYPE_STRING;
charset = CharacterSet::utf8_general_ci;
break;
}
return ColumnDefinition(column_name, charset, 0, column_type, flags, 0);
}
}
}
}
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