Package org.apache.gravitino.dto.rel.partitioning

Class TruncatePartitioningDTO

java.lang.Object

org.apache.gravitino.dto.rel.partitioning.TruncatePartitioningDTO

All Implemented Interfaces:

Partitioning, Expression, Transform

public final class TruncatePartitioningDTO
extends Object
implements Partitioning

Represents the truncate partitioning.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.gravitino.dto.rel.partitioning.Partitioning

Partitioning.SingleFieldPartitioning, Partitioning.Strategy

Nested classes/interfaces inherited from interface org.apache.gravitino.rel.expressions.transforms.Transform

Transform.SingleFieldTransform

Field Summary

Fields inherited from interface org.apache.gravitino.rel.expressions.Expression

EMPTY_EXPRESSION, EMPTY_NAMED_REFERENCE

Fields inherited from interface org.apache.gravitino.dto.rel.partitioning.Partitioning

EMPTY_PARTITIONING

Method Summary

Modifier and Type	Method	Description
Expression[]	arguments()
String[]	fieldName()
String	name()
static TruncatePartitioningDTO	of(int width, String[] fieldName)	Constructs a truncate partitioning.
Partitioning.Strategy	strategy()	Returns the name of the partitioning strategy.
void	validate(ColumnDTO[] columns)	Validates the partitioning columns.
int	width()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.gravitino.rel.expressions.Expression

references

Methods inherited from interface org.apache.gravitino.rel.expressions.transforms.Transform

assignments, children

Method Details

of

public static TruncatePartitioningDTO of(int width,
 String[] fieldName)

Constructs a truncate partitioning.

Parameters:

width - The width of the truncate partitioning.

fieldName - The name of the field to partition.

Returns:

The truncate partitioning.

width

public int width()

Returns:

The width of the partitioning.

fieldName

public String[] fieldName()

Returns:

The name of the field to partition.

name

public String name()

Specified by:

name in interface Transform

Returns:

The name of the partitioning strategy.

arguments

public Expression[] arguments()

Specified by:

arguments in interface Transform

Returns:

The arguments of the partitioning.

strategy

public Partitioning.Strategy strategy()

Description copied from interface: Partitioning

Returns the name of the partitioning strategy.

Specified by:

strategy in interface Partitioning

Returns:

The strategy of the partitioning.

validate

public void validate(ColumnDTO[] columns)
              throws IllegalArgumentException

Validates the partitioning columns.

Specified by:

validate in interface Partitioning

Parameters:

columns - The columns to be validated.

Throws:

IllegalArgumentException - If the columns are invalid, this exception is thrown.