com.datastrato.gravitino.rel

Interface Column

All Known Implementing Classes:

ColumnDTO

public interface Column

An interface representing a column of a Table. It defines basic properties of a column, such as name and data type.

Catalog implementation needs to implement it. They should consume it in APIs like TableCatalog.createTable(NameIdentifier, Column[], String, Map), and report it in Table.columns() a default value and a generation expression.

Method Summary

Modifier and Type	Method and Description
java.lang.String	comment()
Type	dataType()
java.lang.String	name()
boolean	nullable()

Method Detail

name

java.lang.String name()

Returns:

The name of this column.

dataType

Type dataType()

Returns:

The data type of this column.

comment

java.lang.String comment()

Returns:

The comment of this column, null if not specified.

nullable

boolean nullable()

Returns:

True if this column may produce null values. Default is true.