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

Class RangePartitioningDTO

java.lang.Object

org.apache.gravitino.dto.rel.partitioning.RangePartitioningDTO

All Implemented Interfaces:

Partitioning, Expression, Transform

public final class RangePartitioningDTO
extends Object
implements Partitioning

Represents the range 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()
RangePartitionDTO[]	assignments()
String[]	fieldName()
String	name()
static RangePartitioningDTO	of(String[] fieldName)	Creates a new RangePartitioningDTO with no pre-assigned partitions.
static RangePartitioningDTO	of(String[] fieldName, RangePartitionDTO[] assignments)	Creates a new RangePartitioningDTO.
Partitioning.Strategy	strategy()	Returns the name of the partitioning strategy.
void	validate(ColumnDTO[] columns)	Validates the partitioning columns.

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

children

Method Details

of

public static RangePartitioningDTO of(String[] fieldName)

Creates a new RangePartitioningDTO with no pre-assigned partitions.

Parameters:

fieldName - The name of the field to partition.

Returns:

The new RangePartitioningDTO.

of

public static RangePartitioningDTO of(String[] fieldName,
 RangePartitionDTO[] assignments)

Creates a new RangePartitioningDTO.

Parameters:

fieldName - The name of the field to partition.

assignments - The pre-assigned range partitions.

Returns:

The new RangePartitioningDTO.

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.

assignments

public RangePartitionDTO[] assignments()

Specified by:

assignments in interface Transform

Returns:

The preassigned partitions in the partitioning. Currently, only Transforms.ListTransform and Transforms.RangeTransform need to deal with assignments

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.