DefaultOwnerRoleFactory.java

  1. /*
  2.  * *************************************************************************************************************************************************************
  3.  *
  4.  * TheseFoolishThings: Miscellaneous utilities
  5.  * http://tidalwave.it/projects/thesefoolishthings
  6.  *
  7.  * Copyright (C) 2009 - 2025 by Tidalwave s.a.s. (http://tidalwave.it)
  8.  *
  9.  * *************************************************************************************************************************************************************
  10.  *
  11.  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
  12.  * You may obtain a copy of the License at
  13.  *
  14.  *     http://www.apache.org/licenses/LICENSE-2.0
  15.  *
  16.  * 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
  17.  * CONDITIONS OF ANY KIND, either express or implied.  See the License for the specific language governing permissions and limitations under the License.
  18.  *
  19.  * *************************************************************************************************************************************************************
  20.  *
  21.  * git clone https://bitbucket.org/tidalwave/thesefoolishthings-src
  22.  * git clone https://github.com/tidalwave-it/thesefoolishthings-src
  23.  *
  24.  * *************************************************************************************************************************************************************
  25.  */
  26. package it.tidalwave.util.impl;

  27. import jakarta.annotation.Nonnull;
  28. import java.util.ArrayList;
  29. import java.util.Collection;
  30. import java.util.List;
  31. import it.tidalwave.util.As;
  32. import it.tidalwave.util.RoleFactory;
  33. import it.tidalwave.util.Task;
  34. import it.tidalwave.util.spi.ContextSnapshot;
  35. import it.tidalwave.role.spi.OwnerRoleFactory;
  36. import it.tidalwave.role.spi.SystemRoleFactory;
  37. import lombok.extern.slf4j.Slf4j;
  38. import static it.tidalwave.util.ShortNames.*;

  39. /***************************************************************************************************************************************************************
  40.  *
  41.  * An implementation for {@link As} based on Spring.
  42.  *
  43.  * @author  Fabrizio Giudici
  44.  *
  45.  **************************************************************************************************************************************************************/
  46. @Slf4j
  47. class DefaultOwnerRoleFactory implements OwnerRoleFactory
  48.   {
  49.     @Nonnull
  50.     private final Object owner;

  51.     private final ContextSnapshot contextSnapshot;

  52.     /***********************************************************************************************************************************************************
  53.      * Constructor for use with composition.
  54.      *
  55.      * @param  owner  the owner object
  56.      **********************************************************************************************************************************************************/
  57.     public DefaultOwnerRoleFactory (@Nonnull final Object owner)
  58.       {
  59.         this.owner = owner;
  60.         contextSnapshot = new ContextSnapshot(owner);
  61.       }

  62.     /***********************************************************************************************************************************************************
  63.      * {@inheritDoc}
  64.      **********************************************************************************************************************************************************/
  65.     @Override @Nonnull @SuppressWarnings("unchecked")
  66.     public <T> Collection<T> findRoles (@Nonnull final Class<? extends T> roleType)
  67.       {
  68.         log.trace("as({}) for {}", shortName(roleType), shortId(owner));
  69.         log.trace(">>>> contexts: {}", contextSnapshot);
  70.         final var systemRoleFactory = SystemRoleFactory.getInstance();

  71.         final List<T> roles = new ArrayList<>(contextSnapshot.runWithContexts(new Task<List<? extends T>, RuntimeException>()
  72.           {
  73.             @Override @Nonnull
  74.             public List<? extends T> run ()
  75.               {
  76.                 final List<T> systemRoles = systemRoleFactory.findRoles(owner, roleType);

  77.                 for (final var roleFactory : systemRoleFactory.findRoles(owner, RoleFactory.class))
  78.                   {
  79.                     if (roleType.isAssignableFrom(roleFactory.getRoleType()))
  80.                       {
  81.                         ((RoleFactory<Object, T>)roleFactory).createRoleFor(owner).ifPresent(systemRoles::add);
  82.                       }
  83.                   }

  84.                 return systemRoles;
  85.               }
  86.           }));

  87.         if (roleType.isAssignableFrom(owner.getClass()))
  88.           {
  89.             roles.add(roleType.cast(owner));
  90.           }

  91.         log.trace(">>>> as() returning {}", shortIds(roles));

  92.         return roles;
  93.       }
  94.   }