com.mysql.cj.xdevapi

Interface Column

public interface Column

Represents individual column of RowResult

Method Summary

Modifier and Type	Method	Description
String	getCharacterSetName()	Get character set name for the column value.
String	getCollationName()	Get collation name for the column value.
String	getColumnLabel()	Get alias of this column.
String	getColumnName()	Get name of this column.
int	getFractionalDigits()	Get number of fractional digits in this column's value.
long	getLength()	Get this column's length.
String	getSchemaName()	Get name of Schema.
String	getTableLabel()	Get alias of Table.
String	getTableName()	Get name of Table.
Type	getType()	Get this column's Type.
boolean	isAutoIncrement()	Checks if this is an auto increment column.
boolean	isNullable()	Checks if column can contain null values.
boolean	isNumberSigned()	Checks if value represents a signed number.
boolean	isPadded()	Checks if the value has a padding.
boolean	isPartKey()	Checks if this column is a part of key.
boolean	isPrimaryKey()	Checks if this is a primary key column.
boolean	isUniqueKey()	Checks if this is a unique key column.

Method Detail

getSchemaName

String getSchemaName()

Get name of Schema.

Returns:

schema name

getTableName

String getTableName()

Get name of Table.

Returns:

table name

getTableLabel

String getTableLabel()

Get alias of Table.

Returns:

table alias

getColumnName

String getColumnName()

Get name of this column.

Returns:

column name

getColumnLabel

String getColumnLabel()

Get alias of this column.

Returns:

column alias

getType

Type getType()

Get this column's Type.

Returns:

column type

getLength

long getLength()

Get this column's length.

Returns:

column length

getFractionalDigits

int getFractionalDigits()

Get number of fractional digits in this column's value.

Returns:

number of fractional digits

isNumberSigned

boolean isNumberSigned()

Checks if value represents a signed number.

Returns:

true if value represents a signed number

getCollationName

String getCollationName()

Get collation name for the column value.

Returns:

collation name

getCharacterSetName

String getCharacterSetName()

Get character set name for the column value.

Returns:

character set name

isPadded

boolean isPadded()

Checks if the value has a padding.

Returns:

true if column flags contain FIELD_FLAG_ZEROFILL or field type is CHAR

isNullable

boolean isNullable()

Checks if column can contain null values.

Returns:

false if column flags contain FIELD_FLAG_NOT_NULL

isAutoIncrement

boolean isAutoIncrement()

Checks if this is an auto increment column.

Returns:

true if column flags contain FIELD_FLAG_AUTO_INCREMENT

isPrimaryKey

boolean isPrimaryKey()

Checks if this is a primary key column.

Returns:

true if column flags contain FIELD_FLAG_PRIMARY_KEY

isUniqueKey

boolean isUniqueKey()

Checks if this is a unique key column.

Returns:

true if column flags contain FIELD_FLAG_UNIQUE_KEY

isPartKey

boolean isPartKey()

Checks if this column is a part of key.

Returns:

true if column flags contain FIELD_FLAG_MULTIPLE_KEY