Package dev.frostlake.functions.scalar.semistructured

Class GetPath

java.lang.Object

dev.frostlake.functions.BuiltInFunction

dev.frostlake.functions.VariantAccessorFunction

dev.frostlake.functions.scalar.semistructured.GetPath

public class GetPath
extends VariantAccessorFunction

GET(object_or_array, field_or_index) — extracts a value by key (object) or index (array). GET_PATH(object, path_string) — navigates a dot/bracket path like 'a.b[0].c'.

Constructor Summary

Constructors

Constructor	Description
GetPath(boolean pathMode)

Method Summary

Modifier and Type	Method	Description
Object	evaluate(List<Object> args)	Computes the function's result over its already-evaluated argument values.
int	getMaxArgCount()	The most arguments a call to this function may pass; Integer.MAX_VALUE marks a variadic function (see BuiltInFunction.isVariadic()).
int	getMinArgCount()	The fewest arguments a call to this function may pass; fewer is an argument-count error.

Methods inherited from class dev.frostlake.functions.VariantAccessorFunction

geoRejection

Methods inherited from class dev.frostlake.functions.BuiltInFunction

approximateRejection, binaryRejection, booleanRejection, evaluate, fileRejection, getName, getReturnType, isVariadic, refusesMissingArgumentsByType, semiStructuredRejection, structuredRejection, temporalRejection, temporalRejection, temporalRejection, textRejection, uuidRejection, vectorRejection

Methods inherited from class java.lang.Object

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

Constructor Details

GetPath

public GetPath(boolean pathMode)

Method Details

evaluate

public Object evaluate(List<Object> args)

Description copied from class: BuiltInFunction

Computes the function's result over its already-evaluated argument values. A SQL NULL argument arrives as Java null, and returning null makes the SQL result NULL.

Specified by:

evaluate in class BuiltInFunction

Parameters:

args - the argument values, in call order

Returns:

the function's value for these arguments, or null for SQL NULL

getMinArgCount

public int getMinArgCount()

Description copied from class: BuiltInFunction

The fewest arguments a call to this function may pass; fewer is an argument-count error.

Specified by:

getMinArgCount in class BuiltInFunction

Returns:

the minimum accepted argument count

getMaxArgCount

public int getMaxArgCount()

Description copied from class: BuiltInFunction

The most arguments a call to this function may pass; Integer.MAX_VALUE marks a variadic function (see BuiltInFunction.isVariadic()).

Specified by:

getMaxArgCount in class BuiltInFunction

Returns:

the maximum accepted argument count