Package dev.frostlake.types

Class StructuredObjectType

java.lang.Object

dev.frostlake.types.DataType

dev.frostlake.types.ObjectType

dev.frostlake.types.StructuredObjectType

All Implemented Interfaces:

Serializable

public class StructuredObjectType
extends ObjectType

A STRUCTURED object type — OBJECT(x VARCHAR, y NUMBER) — as opposed to the plain semi-structured ObjectType. Snowflake treats the two as different types: a plain OBJECT is rejected where a structured one is required and vice versa, and only a structured value may carry the RENAME FIELDS / ADD FIELDS cast modifiers (live-verified).

Structured-ness is a STATIC property of the type, not a tag on the value: live, SYSTEM$TYPEOF(NULL::OBJECT(x VARCHAR)) still reports OBJECT(x VARCHAR)[LOB] even though the value is SQL NULL, and it propagates through table columns, CTEs and subqueries.

Field ORDER is significant and is preserved on output: live, CAST(<OBJECT(x VARCHAR)> AS OBJECT(z INT, x VARCHAR) ADD FIELDS) renders {"z":null,"x":"a"} — declaration order, NOT the sorted key order a semi-structured OBJECT renders in.

See Also:

• Serialized Form

Field Summary

Fields inherited from class dev.frostlake.types.ObjectType

OBJECT

Constructor Summary

Constructors

Constructor	Description
StructuredObjectType(List<StructuredField> fields)

Method Summary

Modifier and Type	Method	Description
StructuredField	field(String name)	The declared field with this VERBATIM name, or null when the type has no such field.
List<StructuredField>	getFields()
boolean	isCompatible(DataType other)
String	toString()

Methods inherited from class dev.frostlake.types.ObjectType

formatValue, getCommonType, getSize, parseValue

Methods inherited from class dev.frostlake.types.DataType

equals, getCategory, getName, hashCode

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

StructuredObjectType

public StructuredObjectType(List<StructuredField> fields)

Method Details

getFields

public List<StructuredField> getFields()

field

public StructuredField field(String name)

The declared field with this VERBATIM name, or null when the type has no such field.

isCompatible

public boolean isCompatible(DataType other)

Overrides:

isCompatible in class ObjectType

toString

public String toString()

Overrides:

toString in class DataType