Protobuf 数据类型

.proto Type

	Notes	C++ Type	Java Type
double		double	double
float		float	float
int32	Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead.	int32	int
int64	Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead.	int64	long
uint32	Uses variable-length encoding.	uint32	int
uint64	Uses variable-length encoding.	uint64	long
sint32	Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s.	int32	int
sint64	Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s.	int64	long
fixed32	Always four bytes. More efficient than uint32 if values are often greater than 2²⁸.	uint32	int
fixed64	Always eight bytes. More efficient than uint64 if values are often greater than 2⁵⁶.	uint64	long
sfixed32	Always four bytes.	int32	int
sfixed64	Always eight bytes.	int64	long
bool		bool	boolean
string	A string must always contain UTF-8 encoded or 7-bit ASCII text.	string	String
bytes	May contain any arbitrary sequence of bytes.	string	ByteString

public static Dictionary<string, string> MySqlToProbuffer = new Dictionary<string, string>()
        {
            {"varchar", "string"},
            {"longtext", "string"},
            {"text", "string"},
            {"char", "string"},
            {"mediumtext", "string"},
            {"bigint", "int64"},
            {"datetime", "int64"},
            {"timestamp", "int64"},
            {"int", "int32"},
            {"tinyint", "int32"},
            {"smallint", "int32"},
            {"decimal", "double"},
            {"double", "double"},
            {"float", "float"},
            {"bit", "bool"},
            {"blob", "bytes"},
            {"longblob", "bytes"},
            {"varbinary", "bytes"},
            {"binary", "bytes"}
        };

        public static Dictionary<string, string> ProbufferToJava = new Dictionary<string, string>()
        {
            {"string", "String"},
            {"int32", "Integer"},
            {"int64", "Long"},
            {"double", "Double"},
            {"float", "Float"},
            {"bool", "Boolean"},
            {"bytes", "ByteString"},
            {"uint32", "Integer"},
            {"uint64", "Long"},
            {"sint32", "Integer"},
            {"sint64", "Long"},
            {"fixed32", "Integer"},
            {"fixed64", "Long"},
            {"sfixed32", "Integer"},
            {"sfixed64", "Long"},
        };

Protobuf 数据类型

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