/// <summary>
/// Obtains an instance from a contract specification, expiry year-month, variant,
/// version, put/call, strike price and underlying expiry.
/// <para>
/// The security identifier will be automatically created using <seealso cref="EtdIdUtils"/>.
/// The specification must be for an option.
///
/// </para>
/// </summary>
/// <param name="spec"> the option contract specification </param>
/// <param name="expiry"> the expiry year-month of the option </param>
/// <param name="variant"> the variant of the ETD, such as 'Monthly', 'Weekly, 'Daily' or 'Flex' </param>
/// <param name="version"> the non-negative version, zero if versioning does not apply </param>
/// <param name="putCall"> whether the option is a put or call </param>
/// <param name="strikePrice"> the strike price of the option </param>
/// <param name="underlyingExpiryMonth"> the expiry of the underlying instrument, such as a future, may be null </param>
/// <returns> an option security based on this contract specification </returns>
/// <exception cref="IllegalStateException"> if the product type of the contract specification is not {@code OPTION} </exception>
public static EtdOptionSecurity of(EtdContractSpec spec, YearMonth expiry, EtdVariant variant, int version, PutCall putCall, double strikePrice, YearMonth underlyingExpiryMonth)
{
if (spec.Type != EtdType.OPTION)
{
throw new System.InvalidOperationException(Messages.format("Cannot create an EtdOptionSecurity from a contract specification of type '{}'", spec.Type));
}
SecurityId securityId = EtdIdUtils.optionId(spec.ExchangeId, spec.ContractCode, expiry, variant, version, putCall, strikePrice, underlyingExpiryMonth);
return(EtdOptionSecurity.builder().info(SecurityInfo.of(securityId, spec.PriceInfo)).contractSpecId(spec.Id).expiry(expiry).variant(variant).version(version).putCall(putCall).strikePrice(strikePrice).underlyingExpiryMonth(underlyingExpiryMonth).build());
}
internal static EtdOptionSecurity sut2()
{
return(EtdOptionSecurity.builder().info(SecurityInfo.of(SecurityId.of("B", "C"), SecurityPriceInfo.of(Currency.EUR, 10))).contractSpecId(EtdContractSpecId.of("test", "234")).expiry(YearMonth.of(2017, 9)).variant(EtdVariant.ofWeekly(2)).version(4).putCall(PutCall.CALL).strikePrice(3).underlyingExpiryMonth(YearMonth.of(2017, 12)).build());
}
//-------------------------------------------------------------------------
internal static EtdOptionSecurity sut()
{
return(EtdOptionSecurity.builder().info(SecurityInfo.of(SecurityId.of("A", "B"), SecurityPriceInfo.of(Currency.GBP, 100))).contractSpecId(EtdContractSpecId.of("test", "123")).expiry(YearMonth.of(2017, 6)).putCall(PutCall.PUT).strikePrice(2).build());
}