Resolutions.java example

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streamflow-core-master
/**
 *
 * Copyright
 * 2009-2015 Jayway Products AB
 * 2016-2017 Föreningen Sambruk
 *
 * Licensed under AGPL, Version 3.0 (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.gnu.org/licenses/agpl.txt
 *
 * 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.
 */
package se.streamsource.streamflow.web.domain.structure.casetype;

import org.qi4j.api.common.Optional;
import org.qi4j.api.entity.Aggregated;
import org.qi4j.api.entity.IdentityGenerator;
import org.qi4j.api.entity.association.ManyAssociation;
import org.qi4j.api.injection.scope.Service;
import org.qi4j.api.injection.scope.Structure;
import org.qi4j.api.injection.scope.This;
import org.qi4j.api.mixin.Mixins;
import org.qi4j.api.query.Query;
import org.qi4j.api.query.QueryExpressions;
import org.qi4j.api.structure.Module;
import org.qi4j.api.unitofwork.UnitOfWork;

import se.streamsource.streamflow.infrastructure.event.domain.DomainEvent;
import se.streamsource.streamflow.web.domain.entity.casetype.ResolutionEntity;

/**
 * List of defined Resolutions
 */
@Mixins(Resolutions.Mixin.class)
public interface Resolutions
{
   Resolution createResolution( String name );

   void removeResolution( Resolution resolution );

   boolean hasResolutions();

   Iterable<Resolution> getResolutions();

   Query<SelectedResolutions> usages( Resolution resolution );

   interface Data
   {
      @Aggregated
      ManyAssociation<Resolution> resolutions();

      Resolution createdResolution( @Optional DomainEvent event, String identity );

      void removedResolution( @Optional DomainEvent event, Resolution resolution );
   }

   abstract class Mixin
         implements Resolutions, Data
   {
      @Service
      IdentityGenerator idGen;

      @Structure
      Module module;

      @This
      Data state;

      public Resolution createResolution( String name )
      {
         Resolution resolution = createdResolution( null, idGen.generate( ResolutionEntity.class ));
         resolution.changeDescription( name );
         return resolution;
      }

      public void removeResolution( Resolution resolution )
      {
         if (state.resolutions().contains( resolution ))
         {
            removedResolution( null, resolution );
            resolution.removeEntity();
         }
      }

      public boolean hasResolutions()
      {
         return state.resolutions().count() > 0;
      }

      public Iterable<Resolution> getResolutions()
      {
         return state.resolutions();
      }

      public Query<SelectedResolutions> usages( Resolution resolution )
      {
         SelectedResolutions.Data selectedResolutions = QueryExpressions.templateFor( SelectedResolutions.Data.class );
         Query<SelectedResolutions> resolutionUsages = module.queryBuilderFactory().newQueryBuilder(SelectedResolutions.class).
               where(QueryExpressions.contains(selectedResolutions.selectedResolutions(), resolution)).
               newQuery(module.unitOfWorkFactory().currentUnitOfWork());

         return resolutionUsages;
      }

      public Resolution createdResolution( DomainEvent event, String identity )
      {
         UnitOfWork uow = module.unitOfWorkFactory().currentUnitOfWork();
         Resolution resolution = uow.newEntity( Resolution.class, identity );
         state.resolutions().add( state.resolutions().count(), resolution );
         return resolution;
      }

      public void removedResolution( DomainEvent event, Resolution resolution )
      {
         state.resolutions().remove( resolution );
      }
   }
}