io.polygenesis.core.AbstractionRepositoryResolver Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of polygenesis-core Show documentation
The newest version!
/*-
 * ==========================LICENSE_START=================================
 * PolyGenesis Platform
 * ========================================================================
 * Copyright (C) 2015 - 2019 Christos Tsakostas, OREGOR LTD
 * ========================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ===========================LICENSE_END==================================
 */

package io.polygenesis.core;

import io.polygenesis.commons.assertion.Assertion;
import java.util.Optional;
import java.util.Set;

/**
 * The type Abstraction repository resolver.
 *
 * @author Christos Tsakostas
 */
public class AbstractionRepositoryResolver {

  // ===============================================================================================
  // FUNCTIONALITY
  // ===============================================================================================

  /**
   * Resolve proper generics t.
   *
   * @param  the type parameter
   * @param abstractionRepositories the abstraction repositories
   * @param clazz the clazz
   * @return the t
   */
  @SuppressWarnings({"unchecked"})
  public > T resolve(
      Set> abstractionRepositories, Class clazz) {
    Assertion.isNotNull(abstractionRepositories, "abstractionRepositories is required");
    Assertion.isNotNull(clazz, "clazz is required");

    Optional optionalClazz =
        abstractionRepositories
            .stream()
            .filter(
                modelRepository ->
                    modelRepository.getClass().getCanonicalName().equals(clazz.getCanonicalName())
                        || modelRepository
                            .getClass()
                            .getCanonicalName()
                            .equals(clazz.getCanonicalName() + "Impl"))
            .map(modelRepository -> (T) modelRepository)
            .findFirst();

    if (optionalClazz.isPresent()) {
      return optionalClazz.get();
    } else {
      throw new IllegalArgumentException(
          String.format(
              "No Abstraction Repository found for Class=%s in provided abstractionRepositories",
              clazz.getCanonicalName()));
    }
  }
}