org.opentripplanner.transit.model.framework.AbstractEntityBuilder Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of otp Show documentation

The OpenTripPlanner multimodal journey planning system

The newest version!

package org.opentripplanner.transit.model.framework;

import java.util.Objects;

public abstract class AbstractEntityBuilder<
  E extends AbstractTransitEntity, B extends AbstractEntityBuilder
>
  extends AbstractBuilder
  implements TransitEntityBuilder {

  @SuppressWarnings("rawtypes")
  private static final EntityContext NOOP = new EntityContext() {};

  private FeedScopedId id;

  private final EntityContext context;

  public AbstractEntityBuilder(FeedScopedId id, EntityContext context) {
    super(null);
    this.id = id;
    this.context = Objects.requireNonNull(context);
  }

  public AbstractEntityBuilder(FeedScopedId id) {
    this(id, noopContext());
  }

  public AbstractEntityBuilder(E original, EntityContext context) {
    super(original);
    this.id = original.getId();
    this.context = context;
  }

  public AbstractEntityBuilder(E original) {
    this(original, noopContext());
  }

  public final FeedScopedId getId() {
    return id;
  }

  public final B withId(FeedScopedId id) {
    this.id = id;
    //noinspection unchecked
    return (B) this;
  }

  @SuppressWarnings("unchecked")
  @Override
  public E save() {
    return context.save((B) this);
  }

  @SuppressWarnings("unchecked")
  private static <
    E extends AbstractTransitEntity, B extends AbstractEntityBuilder
  > EntityContext noopContext() {
    return (EntityContext) NOOP;
  }
}