Package org.apache.calcite.runtime.variant

Class VariantValue

java.lang.Object

org.apache.calcite.runtime.variant.VariantValue

Direct Known Subclasses:

VariantNull, VariantSqlValue

public abstract class VariantValue
extends Object

Base class for the runtime support for values of the VARIANT SQL type.

Constructor Summary

Constructors

Constructor	Description
VariantValue()

Method Summary

Modifier and Type	Method	Description
abstract @Nullable Object	cast(RuntimeTypeInformation type)	Cast this value to the specified type.
abstract String	getTypeString()	A string describing the runtime type information of this value.
static @Nullable String	getTypeString(Object object)
abstract @Nullable Object	item(Object index)

Methods inherited from class java.lang.Object

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

Constructor Details

VariantValue

public VariantValue()

Method Details

getTypeString

public static @Nullable String getTypeString(Object object)

getTypeString

public abstract String getTypeString()

A string describing the runtime type information of this value.

cast

public abstract @Nullable Object cast(RuntimeTypeInformation type)

Cast this value to the specified type. Currently, the rule is: if the value has the specified type, the value field is returned, otherwise a SQL NULL is returned.

item

public abstract @Nullable Object item(Object index)