程序包 com.mysql.cj.x.protobuf

接口 MysqlxResultset.ColumnMetaDataOrBuilder

    • 方法概要

      所有方法 实例方法 抽象方法 
      修饰符和类型 方法 说明
      com.google.protobuf.ByteString getCatalog()
      catalog the schema originates from @note As there is currently no support for catalogs in MySQL, don't expect this field to be set.
      long getCollation()
      optional uint64 collation = 8;
      int getContentType()
      a hint about the higher-level encoding of a BYTES field | Type | Value | Description | |--------|--------|-------------------------| | BYTES | 0x0001 | GEOMETRY (WKB encoding) | | BYTES | 0x0002 | JSON (text encoding) | | BYTES | 0x0003 | XML (text encoding) | @note This list isn't comprehensive.
      int getFlags()
      ``.type`` specific flags | Type | Value | Description | |---------|--------|--------------| | UINT | 0x0001 | zerofill | | DOUBLE | 0x0001 | unsigned | | FLOAT | 0x0001 | unsigned | | DECIMAL | 0x0001 | unsigned | | BYTES | 0x0001 | rightpad | | Value | Description | |--------|-----------------| | 0x0010 | NOT\_NULL | | 0x0020 | PRIMARY\_KEY | | 0x0040 | UNIQUE\_KEY | | 0x0080 | MULTIPLE\_KEY | | 0x0100 | AUTO\_INCREMENT | default: 0
      int getFractionalDigits()
      displayed factional decimal digits for floating point and fixed point numbers
      int getLength()
      maximum count of displayable characters of .type
      com.google.protobuf.ByteString getName()
      name of the column
      com.google.protobuf.ByteString getOriginalName()
      name of the column before an alias was applied
      com.google.protobuf.ByteString getOriginalTable()
      name of the table the column originates from before an alias was applied
      com.google.protobuf.ByteString getSchema()
      schema the column originates from
      com.google.protobuf.ByteString getTable()
      name of the table the column originates from
      MysqlxResultset.ColumnMetaData.FieldType getType()
      datatype of the field in a row
      boolean hasCatalog()
      catalog the schema originates from @note As there is currently no support for catalogs in MySQL, don't expect this field to be set.
      boolean hasCollation()
      optional uint64 collation = 8;
      boolean hasContentType()
      a hint about the higher-level encoding of a BYTES field | Type | Value | Description | |--------|--------|-------------------------| | BYTES | 0x0001 | GEOMETRY (WKB encoding) | | BYTES | 0x0002 | JSON (text encoding) | | BYTES | 0x0003 | XML (text encoding) | @note This list isn't comprehensive.
      boolean hasFlags()
      ``.type`` specific flags | Type | Value | Description | |---------|--------|--------------| | UINT | 0x0001 | zerofill | | DOUBLE | 0x0001 | unsigned | | FLOAT | 0x0001 | unsigned | | DECIMAL | 0x0001 | unsigned | | BYTES | 0x0001 | rightpad | | Value | Description | |--------|-----------------| | 0x0010 | NOT\_NULL | | 0x0020 | PRIMARY\_KEY | | 0x0040 | UNIQUE\_KEY | | 0x0080 | MULTIPLE\_KEY | | 0x0100 | AUTO\_INCREMENT | default: 0
      boolean hasFractionalDigits()
      displayed factional decimal digits for floating point and fixed point numbers
      boolean hasLength()
      maximum count of displayable characters of .type
      boolean hasName()
      name of the column
      boolean hasOriginalName()
      name of the column before an alias was applied
      boolean hasOriginalTable()
      name of the table the column originates from before an alias was applied
      boolean hasSchema()
      schema the column originates from
      boolean hasTable()
      name of the table the column originates from
      boolean hasType()
      datatype of the field in a row

      • 从接口继承的方法 com.google.protobuf.MessageLiteOrBuilder

        isInitialized

      • 从接口继承的方法 com.google.protobuf.MessageOrBuilder

        findInitializationErrors, getAllFields, getDefaultInstanceForType, getDescriptorForType, getField, getInitializationErrorString, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, getUnknownFields, hasField, hasOneof

    • 方法详细资料

      • hasType

        boolean hasType()
         datatype of the field in a row
        required .Mysqlx.Resultset.ColumnMetaData.FieldType type = 1;
        返回:
        Whether the type field is set.

      • hasName

        boolean hasName()
         name of the column
        optional bytes name = 2;
        返回:
        Whether the name field is set.

      • getName

        com.google.protobuf.ByteString getName()
         name of the column
        optional bytes name = 2;
        返回:
        The name.

      • hasOriginalName

        boolean hasOriginalName()
         name of the column before an alias was applied
        optional bytes original_name = 3;
        返回:
        Whether the originalName field is set.

      • getOriginalName

        com.google.protobuf.ByteString getOriginalName()
         name of the column before an alias was applied
        optional bytes original_name = 3;
        返回:
        The originalName.

      • hasTable

        boolean hasTable()
         name of the table the column originates from
        optional bytes table = 4;
        返回:
        Whether the table field is set.

      • getTable

        com.google.protobuf.ByteString getTable()
         name of the table the column originates from
        optional bytes table = 4;
        返回:
        The table.

      • hasOriginalTable

        boolean hasOriginalTable()
         name of the table the column originates from before an alias was applied
        optional bytes original_table = 5;
        返回:
        Whether the originalTable field is set.

      • getOriginalTable

        com.google.protobuf.ByteString getOriginalTable()
         name of the table the column originates from before an alias was applied
        optional bytes original_table = 5;
        返回:
        The originalTable.

      • hasSchema

        boolean hasSchema()
         schema the column originates from
        optional bytes schema = 6;
        返回:
        Whether the schema field is set.

      • getSchema

        com.google.protobuf.ByteString getSchema()
         schema the column originates from
        optional bytes schema = 6;
        返回:
        The schema.

      • hasCatalog

        boolean hasCatalog()
         catalog the schema originates from
@note
As there is currently no support for catalogs in MySQL,
don't expect this field to be set. In the MySQL C/S
protocol the field had the value ``def`` all the time
        optional bytes catalog = 7;
        返回:
        Whether the catalog field is set.

      • getCatalog

        com.google.protobuf.ByteString getCatalog()
         catalog the schema originates from
@note
As there is currently no support for catalogs in MySQL,
don't expect this field to be set. In the MySQL C/S
protocol the field had the value ``def`` all the time
        optional bytes catalog = 7;
        返回:
        The catalog.

      • hasCollation

        boolean hasCollation()
        optional uint64 collation = 8;
        返回:
        Whether the collation field is set.

      • getCollation

        long getCollation()
        optional uint64 collation = 8;
        返回:
        The collation.

      • hasFractionalDigits

        boolean hasFractionalDigits()
         displayed factional decimal digits for floating point and
fixed point numbers
        optional uint32 fractional_digits = 9;
        返回:
        Whether the fractionalDigits field is set.

      • getFractionalDigits

        int getFractionalDigits()
         displayed factional decimal digits for floating point and
fixed point numbers
        optional uint32 fractional_digits = 9;
        返回:
        The fractionalDigits.

      • hasLength

        boolean hasLength()
         maximum count of displayable characters of .type
        optional uint32 length = 10;
        返回:
        Whether the length field is set.

      • getLength

        int getLength()
         maximum count of displayable characters of .type
        optional uint32 length = 10;
        返回:
        The length.

      • hasFlags

        boolean hasFlags()
         ``.type`` specific flags
| Type    | Value  | Description  |
|---------|--------|--------------|
| UINT    | 0x0001 | zerofill     |
| DOUBLE  | 0x0001 | unsigned     |
| FLOAT   | 0x0001 | unsigned     |
| DECIMAL | 0x0001 | unsigned     |
| BYTES   | 0x0001 | rightpad     |
| Value  | Description     |
|--------|-----------------|
| 0x0010 | NOT\_NULL       |
| 0x0020 | PRIMARY\_KEY    |
| 0x0040 | UNIQUE\_KEY     |
| 0x0080 | MULTIPLE\_KEY   |
| 0x0100 | AUTO\_INCREMENT |
default: 0
        optional uint32 flags = 11;
        返回:
        Whether the flags field is set.

      • getFlags

        int getFlags()
         ``.type`` specific flags
| Type    | Value  | Description  |
|---------|--------|--------------|
| UINT    | 0x0001 | zerofill     |
| DOUBLE  | 0x0001 | unsigned     |
| FLOAT   | 0x0001 | unsigned     |
| DECIMAL | 0x0001 | unsigned     |
| BYTES   | 0x0001 | rightpad     |
| Value  | Description     |
|--------|-----------------|
| 0x0010 | NOT\_NULL       |
| 0x0020 | PRIMARY\_KEY    |
| 0x0040 | UNIQUE\_KEY     |
| 0x0080 | MULTIPLE\_KEY   |
| 0x0100 | AUTO\_INCREMENT |
default: 0
        optional uint32 flags = 11;
        返回:
        The flags.

      • hasContentType

        boolean hasContentType()
         a hint about the higher-level encoding of a BYTES field
| Type   | Value  | Description             |
|--------|--------|-------------------------|
| BYTES  | 0x0001 | GEOMETRY (WKB encoding) |
| BYTES  | 0x0002 | JSON (text encoding)    |
| BYTES  | 0x0003 | XML (text encoding)     |
@note
This list isn't comprehensive. As a guideline: the field's
value is expected to pass a validator check on client
and server if this field is set. If the server adds more
internal data types that rely on BLOB storage like image
manipulation, seeking into complex types in BLOBs, and
more types will be added
        optional uint32 content_type = 12;
        返回:
        Whether the contentType field is set.

      • getContentType

        int getContentType()
         a hint about the higher-level encoding of a BYTES field
| Type   | Value  | Description             |
|--------|--------|-------------------------|
| BYTES  | 0x0001 | GEOMETRY (WKB encoding) |
| BYTES  | 0x0002 | JSON (text encoding)    |
| BYTES  | 0x0003 | XML (text encoding)     |
@note
This list isn't comprehensive. As a guideline: the field's
value is expected to pass a validator check on client
and server if this field is set. If the server adds more
internal data types that rely on BLOB storage like image
manipulation, seeking into complex types in BLOBs, and
more types will be added
        optional uint32 content_type = 12;
        返回:
        The contentType.