Package org.apache.gravitino.dto.rel.expressions

Class FieldReferenceDTO

java.lang.Object

org.apache.gravitino.dto.rel.expressions.FieldReferenceDTO

All Implemented Interfaces:

FunctionArg, Expression, NamedReference

public class FieldReferenceDTO
extends Object
implements FunctionArg, NamedReference

Data transfer object representing a field reference.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FieldReferenceDTO.Builder	Builder for FieldReferenceDTO.

Nested classes/interfaces inherited from interface org.apache.gravitino.dto.rel.expressions.FunctionArg

FunctionArg.ArgType

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

NamedReference.FieldReference, NamedReference.MetadataField

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.expressions.FunctionArg

EMPTY_ARGS

Method Summary

Modifier and Type	Method	Description
FunctionArg.ArgType	argType()	Arguments type of the function.
static FieldReferenceDTO.Builder	builder()
String[]	fieldName()	Returns the referenced field name as an array of String parts.
static FieldReferenceDTO	of(String... fieldName)	Creates a new instance of FieldReferenceDTO.

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.dto.rel.expressions.FunctionArg

validate

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

children, references

Method Details

of

public static FieldReferenceDTO of(String... fieldName)

Creates a new instance of FieldReferenceDTO.

Parameters:

fieldName - The field name.

Returns:

The new instance.

fieldName

public String[] fieldName()

Description copied from interface: NamedReference

Returns the referenced field name as an array of String parts.

Each string in the returned array represents a field name.

Specified by:

fieldName in interface NamedReference

Returns:

The field name.

argType

public FunctionArg.ArgType argType()

Description copied from interface: FunctionArg

Arguments type of the function.

Specified by:

argType in interface FunctionArg

Returns:

The name of the field reference.

builder

public static FieldReferenceDTO.Builder builder()

Returns:

the builder for creating a new instance of FieldReferenceDTO.