Class CurrencyConverters.Chain

java.lang.Object

com.eqixiac.equinix.design.cost.CurrencyConverters.Chain

All Implemented Interfaces:

CurrencyConverter

Enclosing class:

CurrencyConverters

public static final class CurrencyConverters.Chain
extends Object
implements CurrencyConverter

First-answer-wins composition that can report fallbacks.

Nested Class Summary

Nested classes/interfaces inherited from interface CurrencyConverter

CurrencyConverter.Converted, CurrencyConverter.Kind, CurrencyConverter.Rate

Modifier and Type	Interface	Description
static final record	CurrencyConverter.Converted	An amount restated in another currency.
static enum	CurrencyConverter.Kind	Where a rate came from, in precedence order.
static final record	CurrencyConverter.Rate	A rate between two currencies.

Method Summary

Modifier and Type	Method	Description
String	missingReason(String from, String to)
String	name()
List<String>	notes()
Optional<CurrencyConverter.Rate>	rate(String from, String to)

Methods inherited from class Object

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

Methods inherited from interface CurrencyConverter

convert

Modifier and Type	Method	Description
default Optional<CurrencyConverter.Converted>	convert(BigDecimal amount, String from, String to)	Converts an amount.

Method Details

rate

public Optional<CurrencyConverter.Rate> rate(String from,
 String to)

Specified by:

rate in interface CurrencyConverter

Parameters:

from - ISO 4217 code

to - ISO 4217 code

Returns:

the rate, or empty when this converter has none for the pair

name

public String name()

Specified by:

name in interface CurrencyConverter

Returns:

a short name for reasons and diagnostics

notes

public List<String> notes()

Returns:

notes from sources that fell back (e.g. the live call failed)

missingReason

public String missingReason(String from,
 String to)

Parameters:

from - ISO 4217 code

to - ISO 4217 code

Returns:

the reason no source converts the pair