io.github.mmm.entity.property.link.LinkPropertyBuilder Maven / Gradle / Ivy

Go to download
/* Copyright (c) The m-m-m Team, Licensed under the Apache License, Version 2.0
 * http://www.apache.org/licenses/LICENSE-2.0 */
package io.github.mmm.entity.property.link;

import java.util.function.Function;

import io.github.mmm.entity.bean.EntityBean;
import io.github.mmm.entity.id.Id;
import io.github.mmm.entity.link.Link;
import io.github.mmm.property.AttributeReadOnly;
import io.github.mmm.property.PropertyMetadata;
import io.github.mmm.property.builder.PropertyBuilder;
import io.github.mmm.validation.main.ValidatorBuilderObject;

/**
 * {@link PropertyBuilder} for {@link LinkProperty}.
 *
 * @param  the generic type of the {@link io.github.mmm.entity.bean.EntityBean entity}.
 * @since 1.0.0
 */
public final class LinkPropertyBuilder extends
    PropertyBuilder, LinkProperty, ValidatorBuilderObject, LinkPropertyBuilder>, LinkPropertyBuilder> {

  private Class entityClass;

  private Function, E> resolver;

  /**
   * The constructor.
   *
   * @param lock the {@link #getLock() lock}.
   */
  public LinkPropertyBuilder(AttributeReadOnly lock) {

    this(lock, null);
  }

  /**
   * The constructor.
   *
   * @param lock the {@link #getLock() lock}.
   * @param entityClass the {@link Class} reflecting the entity.
   */
  public LinkPropertyBuilder(AttributeReadOnly lock, Class entityClass) {

    super(lock);
    this.entityClass = entityClass;
  }

  /**
   * @param entityType the {@link Class} reflecting the entity.
   * @return this builder itself ({@code this}) for fluent API calls.
   */
  public LinkPropertyBuilder entityClass(Class entityType) {

    this.entityClass = entityType;
    return this;
  }

  /**
   * @param entityResolver the {@link Function} to load {@link io.github.mmm.entity.Entity entities} by their
   *        {@link Id}.
   * @return this builder itself ({@code this}) for fluent API calls.
   */
  public LinkPropertyBuilder resolver(Function, E> entityResolver) {

    this.resolver = entityResolver;
    return this;
  }

  @Override
  protected ValidatorBuilderObject, LinkPropertyBuilder> createValidatorBuilder() {

    return new ValidatorBuilderObject<>(this);
  }

  @Override
  protected LinkProperty build(String name, PropertyMetadata> metadata) {

    return new LinkProperty<>(name, this.entityClass, metadata, this.resolver);
  }

}