# Role.java

    /*
     * Copyright (c) 2012, Paul Merlin. All Rights Reserved.
     *
     * 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.
     *
     */
    package org.qi4j.library.shiro.domain.permissions;

    import java.util.List;
    import org.qi4j.api.common.UseDefaults;
    import org.qi4j.api.entity.EntityBuilder;
    import org.qi4j.api.entity.EntityComposite;
    import org.qi4j.api.injection.scope.Structure;
    import org.qi4j.api.injection.scope.This;
    import org.qi4j.api.mixin.Mixins;
    import org.qi4j.api.property.Property;
    import org.qi4j.api.structure.Module;
    import org.qi4j.api.unitofwork.UnitOfWork;

    @Mixins( Role.Mixin.class )
    public interface Role
            extends EntityComposite
    {

        Property<String> name();

        @UseDefaults
        Property<List<String>> permissions();

        RoleAssignment assignTo( RoleAssignee assignee );

        public abstract class Mixin
                implements Role
        {

            @Structure
            private Module module;

            @This
            private Role role;

            @Override
            public RoleAssignment assignTo( RoleAssignee assignee )
            {
                UnitOfWork uow = module.currentUnitOfWork();
                EntityBuilder<RoleAssignment> builder = uow.newEntityBuilder( RoleAssignment.class );
                RoleAssignment assignment = builder.instance();
                assignment.assignee().set( assignee );
                assignment.role().set( role );
                assignment = builder.newInstance();
                assignee.roleAssignments().add( assignment );
                return assignment;
            }

        }

    }