本文整理了Java中io.helidon.config.Config.asOptional()方法的一些代码示例，展示了Config.asOptional()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Config.asOptional()方法的具体详情如下：
包路径：io.helidon.config.Config
类名称：Config
方法名：asOptional

Config.asOptional介绍

暂无

代码示例

代码示例来源：origin: io.helidon.security/helidon-security-provider-header-atn

/**
 * Load this builder from a configuration.
 *
 * @param config configuration to load from
 * @return updated builder instance
 */
public Builder fromConfig(Config config) {
  config.get("optional").asOptional(Boolean.class).ifPresent(this::optional);
  config.get("authenticate").asOptional(Boolean.class).ifPresent(this::authenticate);
  config.get("propagate").asOptional(Boolean.class).ifPresent(this::propagate);
  config.get("principal-type").asOptional(SubjectType.class).ifPresent(this::subjectType);
  config.get("atn-token").asOptional(TokenHandler.class).ifPresent(this::atnTokenHandler);
  config.get("outbound-token").asOptional(TokenHandler.class).ifPresent(this::outboundTokenHandler);
  return this;
}

代码示例来源：origin: io.helidon.security/helidon-security-providers-common

evictSchedule(evictDelay, evictPeriod, TimeUnit.MILLISECONDS);
config.get("parallelism-treshold").asOptionalLong().ifPresent(this::parallelismThreshold);
config.get("evictor-class").asOptional(Class.class).ifPresent(this::evictorClass);

代码示例来源：origin: io.helidon.security/helidon-security-integration-webserver

OptionalHelper.from(config.get(KEY_AUTHORIZER).value()).or(() -> defaults.explicitAuthorizer).asOptional()
    .ifPresent(builder::authorizer);
OptionalHelper.from(config.get(KEY_AUTHENTICATE).asOptional(Boolean.class)).or(() -> defaults.authenticate).asOptional()
    .ifPresent(builder::authenticate);
OptionalHelper.from(config.get(KEY_AUTHENTICATION_OPTIONAL).asOptional(Boolean.class))
    .or(() -> defaults.authenticationOptional)
    .asOptional().ifPresent(builder::authenticationOptional);
OptionalHelper.from(config.get(KEY_AUDIT).asOptional(Boolean.class)).or(() -> defaults.audited).asOptional()
    .ifPresent(builder::audit);
OptionalHelper.from(config.get(KEY_AUTHORIZE).asOptional(Boolean.class)).or(() -> defaults.authorize).asOptional()
    .ifPresent(builder::authorize);
OptionalHelper.from(config.get(KEY_AUDIT_EVENT_TYPE).value()).or(() -> defaults.auditEventType).asOptional()
config.get(KEY_AUTHENTICATION_OPTIONAL).asOptional(Boolean.class).ifPresent(aBoolean -> {
  if (aBoolean) {
    if (!config.get(KEY_AUTHENTICATE).exists()) {

代码示例来源：origin: io.helidon.security/helidon-security-integration-webserver

private static <T> void configure(Config config,
                 String key,
                 Optional<T> defaultValue,
                 Consumer<T> builderMethod,
                 Class<T> clazz) {
  OptionalHelper.from(config.get(key).asOptional(clazz)).or(() -> defaultValue).asOptional().ifPresent(builderMethod);
}