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

Class Partitioning.SingleFieldPartitioning

java.lang.Object

org.apache.gravitino.dto.rel.partitioning.Partitioning.SingleFieldPartitioning

All Implemented Interfaces:

Partitioning, Expression, Transform

Direct Known Subclasses:

DayPartitioningDTO, HourPartitioningDTO, IdentityPartitioningDTO, MonthPartitioningDTO, YearPartitioningDTO

Enclosing interface:

Partitioning

public abstract static class Partitioning.SingleFieldPartitioning
extends Object
implements Partitioning

A single field partitioning strategy.

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

Constructor Summary

Constructors

Constructor	Description
SingleFieldPartitioning()

Method Summary

Modifier and Type	Method	Description
Expression[]	arguments()
String[]	fieldName()
String	name()
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.dto.rel.partitioning.Partitioning

strategy

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

assignments, children

Constructor Details

SingleFieldPartitioning

public SingleFieldPartitioning()

Method Details

fieldName

public String[] fieldName()

Returns:

The field name 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.

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.