io.scalecube.config.ListConfigPropertyImpl Maven / Gradle / Ivy

Go to download
package io.scalecube.config;

import io.scalecube.config.source.LoadedConfigProperty;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;

class ListConfigPropertyImpl extends AbstractSimpleConfigProperty>
    implements ListConfigProperty {

  static  Function> toListPropertyParser(Function valueParser) {
    return str -> Arrays.stream(str.split(",")).map(valueParser).collect(Collectors.toList());
  }

  ListConfigPropertyImpl(
      String name,
      Map propertyMap,
      Map> propertyCallbackMap,
      Function valueParser) {
    super(
        name,
        getListPropertyClass(valueParser),
        propertyMap,
        propertyCallbackMap,
        toListPropertyParser(valueParser));
  }

  @Override
  public List value(List defaultValue) {
    return value().orElse(defaultValue);
  }

  @Override
  public List valueOrThrow() {
    return value().orElseThrow(this::newNoSuchElementException);
  }

  private static  Class getListPropertyClass(Function valueParser) {
    Class result = null;
    if (ConfigRegistryImpl.STRING_PARSER == valueParser) {
      result = StringList.class;
    } else if (ConfigRegistryImpl.DOUBLE_PARSER == valueParser) {
      result = DoubleList.class;
    } else if (ConfigRegistryImpl.LONG_PARSER == valueParser) {
      result = LongList.class;
    } else if (ConfigRegistryImpl.INT_PARSER == valueParser) {
      result = IntList.class;
    } else if (ConfigRegistryImpl.DURATION_PARSER == valueParser) {
      result = DurationList.class;
    }
    if (result == null) {
      throw new IllegalArgumentException(
          "ListConfigPropertyImpl: unsupported list valueParser " + valueParser);
    }
    return result;
  }

  private static class StringList {}

  private static class DoubleList {}

  private static class LongList {}

  private static class IntList {}

  private static class DurationList {}
}