Package org.qi4j.api.association

Examples of org.qi4j.api.association.AssociationDescriptor

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            }
            else
            {
                name = annotation.value();
            }
            AssociationDescriptor model = descriptor.getAssociationByName( name );
            return new AssociationInjectionProvider( model );
        }
        else if( ManyAssociation.class.isAssignableFrom( dependencyModel.rawInjectionType() ) )
        {
            // @State ManyAssociation<MyEntity> name;
            AssociationStateDescriptor descriptor = ( (EntityDescriptor) resolution.model() ).state();
            State annotation = (State) dependencyModel.injectionAnnotation();
            String name;
            if( annotation.value().isEmpty() )
            {
                name = resolution.field().getName();
            }
            else
            {
                name = annotation.value();
            }
            AssociationDescriptor model = descriptor.getManyAssociationByName( name );
            return new ManyAssociationInjectionProvider( model );
        }
        else if( NamedAssociation.class.isAssignableFrom( dependencyModel.rawInjectionType() ) )
        {
            // @State NamedAssociation<MyEntity> name;
            AssociationStateDescriptor descriptor = ( (EntityDescriptor) resolution.model() ).state();
            State annotation = (State) dependencyModel.injectionAnnotation();
            String name;
            if( annotation.value().isEmpty() )
            {
                name = resolution.field().getName();
            }
            else
            {
                name = annotation.value();
            }
            AssociationDescriptor model = descriptor.getNamedAssociationByName( name );
            return new NamedAssociationInjectionProvider( model );
        }

        throw new InjectionProviderException( "Injected value has invalid type" );
    }
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        {
            that = ( (ManyAssociationWrapper) that ).next();
        }
        // Descriptor equality
        ManyAssociationInstance<?> thatInstance = (ManyAssociationInstance) that;
        AssociationDescriptor thatDescriptor = (AssociationDescriptor) thatInstance.associationInfo();
        if( !associationInfo.equals( thatDescriptor ) )
        {
            return false;
        }
        // State equality
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        {
            that = ( (AssociationWrapper) that ).next();
        }
        // Descriptor equality
        AssociationInstance<?> thatInstance = (AssociationInstance) that;
        AssociationDescriptor thatDescriptor = (AssociationDescriptor) thatInstance.associationInfo();
        if( !associationInfo.equals( thatDescriptor ) )
        {
            return false;
        }
        // State equality
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                        catch( IllegalArgumentException e )
                        {
                            if( descriptor.valueType().mainType().equals( String.class ) )
                            {
                                // Find Association and convert to string
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityDescriptor.state()
                                        .getAssociationByName( descriptor.qualifiedName().name() );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return null;
                                }
                                Object entity = associationState.associationFor( associationDescriptor.accessor() ).get();
                                if( entity != null )
                                {
                                    return ( (Identity) entity ).identity().get();
                                }
                                else
                                {
                                    return null;
                                }
                            }
                            else if( descriptor.valueType() instanceof CollectionType
                                     && ( (CollectionType) descriptor.valueType() ).collectedType().mainType().equals( String.class ) )
                            {
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityDescriptor.state()
                                        .getManyAssociationByName( descriptor.qualifiedName().name() );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return Collections.emptyList();
                                }

                                ManyAssociation<?> state = associationState.manyAssociationFor( associationDescriptor.accessor() );
                                List<String> entities = new ArrayList<>( state.count() );
                                for( Object entity : state )
                                {
                                    entities.add( ( (Identity) entity ).identity().get() );
                                }
                                return entities;
                            }

                            // No NamedAssociation support

                            return null;
                        }
                    }
                }, new Function<AssociationDescriptor, EntityReference>()
                {
                    @Override
                    public EntityReference map( AssociationDescriptor associationDescriptor )
                    {
                        return EntityReference.entityReferenceFor(
                            associationState.associationFor( associationDescriptor.accessor() ).get() );
                    }
                }, new Function<AssociationDescriptor, Iterable<EntityReference>>()
                {
                    @Override
                    public Iterable<EntityReference> map( AssociationDescriptor associationDescriptor )
                    {
                        ManyAssociation<?> state = associationState.manyAssociationFor( associationDescriptor.accessor() );
                        List<EntityReference> refs = new ArrayList<>( state.count() );
                        for( Object entity : state )
                        {
                            refs.add( EntityReference.entityReferenceFor( entity ) );
                        }
                        return refs;
                    }
                }, new Function<AssociationDescriptor, Map<String, EntityReference>>()
                {
                    @Override
                    public Map<String, EntityReference> map( AssociationDescriptor from )
                    {
                        throw new UnsupportedOperationException( "NamedAssociations are not supported." );
                    }
                } );
            }
            else
            {
                builder = vbf.newValueBuilderWithState( valueType, new Function<PropertyDescriptor, Object>()
                {
                    @Override
                    public Object map( PropertyDescriptor descriptor )
                    {
                        try
                        {
                            PropertyDescriptor propertyDescriptor = entityDescriptor.state()
                                .findPropertyModelByName( descriptor.qualifiedName().name() );
                            return associationState.propertyFor( propertyDescriptor.accessor() ).get();
                        }
                        catch( IllegalArgumentException e )
                        {
                            if( descriptor.valueType().mainType().equals( String.class ) )
                            {
                                // Find Association and convert to string
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityDescriptor.state()
                                        .getAssociationByName( descriptor.qualifiedName().name() );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return null;
                                }

                                Object entity = associationState.associationFor( associationDescriptor.accessor() ).get();
                                if( entity != null )
                                {
                                    return ( (Identity) entity ).identity().get();
                                }
                                return null;
                            }
                            else if( descriptor.valueType() instanceof CollectionType
                                     && ( (CollectionType) descriptor.valueType() ).collectedType().mainType().equals( String.class ) )
                            {
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityDescriptor.state()
                                        .getManyAssociationByName( descriptor.qualifiedName().name() );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return null;
                                }

                                ManyAssociation<?> state = associationState.manyAssociationFor( associationDescriptor.accessor() );
                                List<String> entities = new ArrayList<>( state.count() );
                                for( Object entity : state )
                                {
                                    entities.add( ( (Identity) entity ).identity().get() );
                                }
                                return entities;
                            }

                            // No NamedAssociation support

                            // DTO
                            Class<?> type = descriptor.valueType().mainType();
                            if( DTO.class.isAssignableFrom( type ) )
                            {
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityDescriptor.state()
                                        .getAssociationByName( descriptor.qualifiedName().name() );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return null;
                                }

                                Object entity = associationState.associationFor( associationDescriptor.accessor() ).get();
                                if( entity != null )
                                {
                                    return convert( type, entity );
                                }
                            }

                            return null;
                        }
                    }
                }, new Function<AssociationDescriptor, EntityReference>()
                {
                    @Override
                    public EntityReference map( AssociationDescriptor descriptor )
                    {
                        AssociationDescriptor associationDescriptor;
                        try
                        {
                            associationDescriptor = entityDescriptor.state()
                                .getAssociationByName( descriptor.qualifiedName().name() );
                        }
                        catch( IllegalArgumentException e )
                        {
                            return null;
                        }

                        return EntityReference.entityReferenceFor( associationState
                            .associationFor( associationDescriptor.accessor() ).get() );
                    }
                }, new Function<AssociationDescriptor, Iterable<EntityReference>>()
                {
                    @Override
                    public Iterable<EntityReference> map( AssociationDescriptor descriptor )
                    {
                        AssociationDescriptor associationDescriptor;
                        try
                        {
                            associationDescriptor = entityDescriptor.state()
                                .getManyAssociationByName( descriptor.qualifiedName().name() );
                        }
                        catch( IllegalArgumentException e )
                        {
                            return Iterables.empty();
                        }

                        ManyAssociation<?> state = associationState.manyAssociationFor( associationDescriptor.accessor() );
                        List<EntityReference> refs = new ArrayList<>( state.count() );
                        for( Object entity : state )
                        {
                            refs.add( EntityReference.entityReferenceFor( entity ) );
                        }
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                        catch( IllegalArgumentException e )
                        {
                            if( descriptor.valueType().mainType().equals( String.class ) )
                            {
                                // Find Association and convert to string
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityDescriptor.state()
                                        .getAssociationByName( descriptor.qualifiedName().name() );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return null;
                                }
                                Object entity = associationState.associationFor( associationDescriptor.accessor() ).get();
                                if( entity != null )
                                {
                                    return ( (Identity) entity ).identity().get();
                                }
                                return null;
                            }
                            else if( descriptor.valueType() instanceof CollectionType
                                     && ( (CollectionType) descriptor.valueType() ).collectedType().mainType().equals( String.class ) )
                            {
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityDescriptor.state()
                                        .getManyAssociationByName( descriptor.qualifiedName().name() );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return Collections.emptyList();
                                }

                                ManyAssociation<?> state = associationState.manyAssociationFor( associationDescriptor.accessor() );
                                List<String> entities = new ArrayList<>( state.count() );
                                for( Object entity : state )
                                {
                                    entities.add( ( (Identity) entity ).identity().get() );
                                }
                                return entities;
                            }

                            // No NamedAssociation support

                            return null;
                        }
                    }
                }, new Function<AssociationDescriptor, EntityReference>()
                {
                    @Override
                    public EntityReference map( AssociationDescriptor associationDescriptor )
                    {
                        return EntityReference.entityReferenceFor(
                            associationState.associationFor( associationDescriptor.accessor() ).get() );
                    }
                }, new Function<AssociationDescriptor, Iterable<EntityReference>>()
                {
                    @Override
                    public Iterable<EntityReference> map( AssociationDescriptor associationDescriptor )
                    {
                        ManyAssociation<?> state = associationState.manyAssociationFor( associationDescriptor.accessor() );
                        List<EntityReference> refs = new ArrayList<>( state.count() );
                        for( Object entity : state )
                        {
                            refs.add( EntityReference.entityReferenceFor( entity ) );
                        }
                        return refs;
                    }
                }, new Function<AssociationDescriptor, Map<String, EntityReference>>()
                {
                    @Override
                    public Map<String, EntityReference> map( AssociationDescriptor from )
                    {
                        // No NamedAssociation support
                        return Collections.emptyMap();
                    }
                } );
            }
            else
            {
                builder = vbf.newValueBuilderWithState( valueType, new Function<PropertyDescriptor, Object>()
                {
                    @Override
                    public Object map( PropertyDescriptor descriptor )
                    {
                        try
                        {
                            PropertyDescriptor propertyDescriptor = entityDescriptor.state()
                                .findPropertyModelByName( descriptor.qualifiedName().name() );
                            return associationState.propertyFor( propertyDescriptor.accessor() ).get();
                        }
                        catch( IllegalArgumentException e )
                        {
                            if( descriptor.valueType().mainType().equals( String.class ) )
                            {
                                // Find Association and convert to string
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityDescriptor.state()
                                        .getAssociationByName( descriptor.qualifiedName().name() );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return null;
                                }

                                Object entity = associationState.associationFor( associationDescriptor.accessor() ).get();
                                if( entity != null )
                                {
                                    return ( (Identity) entity ).identity().get();
                                }
                                return null;
                            }
                            else if( descriptor.valueType() instanceof CollectionType
                                     && ( (CollectionType) descriptor.valueType() ).collectedType().mainType().equals( String.class ) )
                            {
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityDescriptor.state()
                                        .getManyAssociationByName( descriptor.qualifiedName().name() );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return null;
                                }

                                ManyAssociation<?> state = associationState.manyAssociationFor( associationDescriptor.accessor() );
                                List<String> entities = new ArrayList<>( state.count() );
                                for( Object entity : state )
                                {
                                    entities.add( ( (Identity) entity ).identity().get() );
                                }
                                return entities;
                            }

                            // No NamedAssociation support

                            // DTO
                            Class<?> type = descriptor.valueType().mainType();
                            if( DTO.class.isAssignableFrom( type ) )
                            {
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityDescriptor.state()
                                        .getAssociationByName( descriptor.qualifiedName().name() );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return null;
                                }

                                Object entity = associationState.associationFor( associationDescriptor.accessor() ).get();
                                if( entity != null )
                                {
                                    return convert( type, entity );
                                }
                            }

                            return null;
                        }
                    }
                }, new Function<AssociationDescriptor, EntityReference>()
                {
                    @Override
                    public EntityReference map( AssociationDescriptor descriptor )
                    {
                        AssociationDescriptor associationDescriptor;
                        try
                        {
                            associationDescriptor = entityDescriptor.state()
                                .getAssociationByName( descriptor.qualifiedName().name() );
                        }
                        catch( IllegalArgumentException e )
                        {
                            return null;
                        }

                        return EntityReference.entityReferenceFor( associationState
                            .associationFor( associationDescriptor.accessor() ).get() );
                    }
                }, new Function<AssociationDescriptor, Iterable<EntityReference>>()
                {
                    @Override
                    public Iterable<EntityReference> map( AssociationDescriptor descriptor )
                    {
                        AssociationDescriptor associationDescriptor;
                        try
                        {
                            associationDescriptor = entityDescriptor.state()
                                .getManyAssociationByName( descriptor.qualifiedName().name() );
                        }
                        catch( IllegalArgumentException e )
                        {
                            return Iterables.empty();
                        }

                        ManyAssociation<?> state = associationState.manyAssociationFor( associationDescriptor.accessor() );
                        List<EntityReference> refs = new ArrayList<>( state.count() );
                        for( Object entity : state )
                        {
                            refs.add( EntityReference.entityReferenceFor( entity ) );
                        }
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        try
        {
            AnEntity anEntity = uow.newEntity( AnEntity.class );

            SomeWithAssociations some = buildSomeWithAssociation( anEntity );
            AssociationDescriptor someAssocDesc = qi4j.api().associationDescriptorFor( some.anEntity() );
            AssociationDescriptor someManyAssocDesc = qi4j.api().associationDescriptorFor( some.manyEntities() );

            SomeWithAssociations some2 = buildSomeWithAssociation( anEntity );
            AssociationDescriptor some2AssocDesc = qi4j.api().associationDescriptorFor( some2.anEntity() );
            AssociationDescriptor some2ManyAssocDesc = qi4j.api().associationDescriptorFor( some2.manyEntities() );

            assertThat( "AssociationDescriptor equal",
                        someAssocDesc,
                        equalTo( some2AssocDesc ) );
            assertThat( "AssociationDescriptor hashcode equal",
                        someAssocDesc.hashCode(),
                        equalTo( some2AssocDesc.hashCode() ) );
            assertThat( "ManyAssociationDescriptor equal",
                        someManyAssocDesc,
                        equalTo( some2ManyAssocDesc ) );
            assertThat( "ManyAssociationDescriptor hashcode equal",
                        someManyAssocDesc.hashCode(),
                        equalTo( some2ManyAssocDesc.hashCode() ) );
        }
        finally
        {
            uow.discard();
        }
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    {
        UnitOfWork uow = module.newUnitOfWork();
        try
        {
            SomeWithAssociations some = buildSomeWithAssociation( uow.newEntity( AnEntity.class ) );
            AssociationDescriptor someAssocDesc = qi4j.api().associationDescriptorFor( some.anEntity() );
            AssociationDescriptor someManyAssocDesc = qi4j.api().associationDescriptorFor( some.manyEntities() );

            SomeWithAssociations some2 = buildSomeWithAssociation( uow.newEntity( AnEntity.class ) );
            AssociationDescriptor some2AssocDesc = qi4j.api().associationDescriptorFor( some2.anEntity() );
            AssociationDescriptor some2ManyAssocDesc = qi4j.api().associationDescriptorFor( some2.manyEntities() );

            assertThat( "AssociationDescriptor equal",
                        someAssocDesc,
                        equalTo( some2AssocDesc ) );
            assertThat( "AssociationDescriptor hashcode equal",
                        someAssocDesc.hashCode(),
                        equalTo( some2AssocDesc.hashCode() ) );
            assertThat( "ManyAssociationDescriptor equal",
                        someManyAssocDesc,
                        equalTo( some2ManyAssocDesc ) );
            assertThat( "ManyAssociationDescriptor hashcode equal",
                        someManyAssocDesc.hashCode(),
                        equalTo( some2ManyAssocDesc.hashCode() ) );
        }
        finally
        {
            uow.discard();
        }
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        try
        {
            AnEntity anEntity = uow.newEntity( AnEntity.class );

            SomeWithAssociations some = buildSomeWithAssociation( anEntity );
            AssociationDescriptor someAssocDesc = qi4j.api().associationDescriptorFor( some.anEntity() );
            AssociationDescriptor someManyAssocDesc = qi4j.api().associationDescriptorFor( some.manyEntities() );

            OtherWithAssociations other = buildOtherWithAssociation( anEntity );
            AssociationDescriptor otherAssocDesc = qi4j.api().associationDescriptorFor( other.anEntity() );
            AssociationDescriptor some2ManyAssocDesc = qi4j.api().associationDescriptorFor( other.manyEntities() );

            assertThat( "AssociationDescriptor not equal",
                        someAssocDesc,
                        not( equalTo( otherAssocDesc ) ) );
            assertThat( "AssociationDescriptor hashcode not equal",
                        someAssocDesc.hashCode(),
                        not( equalTo( otherAssocDesc.hashCode() ) ) );
            assertThat( "ManyAssociationDescriptor not equal",
                        someManyAssocDesc,
                        not( equalTo( some2ManyAssocDesc ) ) );
            assertThat( "ManyAssociationDescriptor hashcode not equal",
                        someManyAssocDesc.hashCode(),
                        not( equalTo( some2ManyAssocDesc.hashCode() ) ) );
        }
        finally
        {
            uow.discard();
        }
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                            AssociationStateDescriptor entityState = entityDescriptor.state();
                            String associationName = descriptor.qualifiedName().name();
                            if( descriptor.valueType().mainType().equals( String.class ) )
                            {
                                // Find Association and convert to string
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityState.getAssociationByName( associationName );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return null;
                                }
                                AccessibleObject associationMethod = associationDescriptor.accessor();
                                Object entity = associationState.associationFor( associationMethod ).get();
                                if( entity != null )
                                {
                                    return ( (Identity) entity ).identity().get();
                                }
                                else
                                {
                                    return null;
                                }
                            }
                            else if( descriptor.valueType() instanceof CollectionType
                                     && ( (CollectionType) descriptor.valueType() ).collectedType()
                                .mainType()
                                .equals( String.class ) )
                            {
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityState.getManyAssociationByName( associationName );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return Collections.emptyList();
                                }

                                ManyAssociation<?> state = associationState.manyAssociationFor( associationDescriptor.accessor() );
                                List<String> entities = new ArrayList<>( state.count() );
                                for( Object entity : state )
                                {
                                    entities.add( ( (Identity) entity ).identity().get() );
                                }
                                return entities;
                            }
                            else if( descriptor.valueType() instanceof MapType
                                     && ( (MapType) descriptor.valueType() ).keyType().mainType().equals( String.class )
                                     && ( (MapType) descriptor.valueType() ).valueType().mainType().equals( String.class ) )
                            {
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityState.getNamedAssociationByName( associationName );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return Collections.emptyMap();
                                }

                                NamedAssociation<?> state = associationState.namedAssociationFor( associationDescriptor.accessor() );
                                Map<String, String> entities = new LinkedHashMap<>( state.count() );
                                for( String name : state )
                                {
                                    entities.put( name, ( (Identity) state.get( name ) ).identity().get() );
                                }
                                return entities;
                            }

                            return null;
                        }
                    }
                    },
                    new Function<AssociationDescriptor, EntityReference>()
                    {
                        @Override
                        public EntityReference map( AssociationDescriptor associationDescriptor )
                        {
                            return EntityReference.entityReferenceFor(
                                associationState.associationFor( associationDescriptor.accessor() ).get() );
                        }
                    },
                    new Function<AssociationDescriptor, Iterable<EntityReference>>()
                    {
                        @Override
                        public Iterable<EntityReference> map( AssociationDescriptor associationDescriptor )
                        {
                            ManyAssociation<?> state = associationState.manyAssociationFor( associationDescriptor.accessor() );
                            List<EntityReference> refs = new ArrayList<>( state.count() );
                            for( Object entity : state )
                            {
                                refs.add( EntityReference.entityReferenceFor( entity ) );
                            }
                            return refs;
                        }
                    },
                    new Function<AssociationDescriptor, Map<String, EntityReference>>()
                    {
                        @Override
                        public Map<String, EntityReference> map( AssociationDescriptor associationDescriptor )
                        {
                            NamedAssociation<?> assoc = associationState.namedAssociationFor( associationDescriptor.accessor() );
                            Map<String, EntityReference> refs = new LinkedHashMap<>( assoc.count() );
                            for( String name : assoc )
                            {
                                refs.put( name, EntityReference.entityReferenceFor( assoc.get( name ) ) );
                            }
                            return refs;
                        }
                    } );
            }
            else
            {
                builder = module.newValueBuilderWithState(
                    valueType,
                    new Function<PropertyDescriptor, Object>()
                {
                    @Override
                    public Object map( final PropertyDescriptor descriptor )
                    {
                        AssociationStateDescriptor entityState = entityDescriptor.state();
                        String propertyName = descriptor.qualifiedName().name();
                        try
                        {
                            PropertyDescriptor propertyDescriptor = entityState.findPropertyModelByName( propertyName );
                            return associationState.propertyFor( propertyDescriptor.accessor() ).get();
                        }
                        catch( IllegalArgumentException e )
                        {
                            if( descriptor.valueType().mainType().equals( String.class ) )
                            {
                                // Find Association and convert to string
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityState.getAssociationByName( propertyName );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return null;
                                }

                                AccessibleObject associationMethod = associationDescriptor.accessor();
                                Object entity = associationState.associationFor( associationMethod ).get();
                                if( entity != null )
                                {
                                    return ( (Identity) entity ).identity().get();
                                }
                                else
                                {
                                    return null;
                                }
                            }
                            else if( descriptor.valueType() instanceof CollectionType
                                     && ( (CollectionType) descriptor.valueType() ).collectedType().mainType().equals( String.class ) )
                            {
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityState.getManyAssociationByName( propertyName );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return null;
                                }

                                AccessibleObject associationMethod = associationDescriptor.accessor();
                                ManyAssociation<?> state = associationState.manyAssociationFor( associationMethod );
                                List<String> entities = new ArrayList<>( state.count() );
                                for( Object entity : state )
                                {
                                    entities.add( ( (Identity) entity ).identity().get() );
                                }
                                return entities;
                            }
                            else if( descriptor.valueType() instanceof MapType
                                     && ( (MapType) descriptor.valueType() ).keyType().mainType().equals( String.class )
                                     && ( (MapType) descriptor.valueType() ).valueType().mainType().equals( String.class ) )
                            {
                                AssociationDescriptor associationDescriptor;
                                try
                                {
                                    associationDescriptor = entityState.getNamedAssociationByName( propertyName );
                                }
                                catch( IllegalArgumentException e1 )
                                {
                                    return null;
                                }

                                AccessibleObject associationMethod = associationDescriptor.accessor();
                                NamedAssociation<?> state = associationState.namedAssociationFor( associationMethod );
                                Map<String, String> entities = new LinkedHashMap<>( state.count() );
                                for( String name : state )
                                {
                                    entities.put( name, ( (Identity) state.get( name ) ).identity().get() );
                                }
                                return entities;
                            }
                            return null;
                        }
                    }
                    },
                    new Function<AssociationDescriptor, EntityReference>()
                    {
                        @Override
                        public EntityReference map( AssociationDescriptor descriptor )
                        {
                            AssociationDescriptor associationDescriptor;
                            try
                            {
                                associationDescriptor = entityDescriptor.state()
                                    .getAssociationByName( descriptor.qualifiedName().name() );
                            }
                            catch( IllegalArgumentException e )
                            {
                                return null;
                            }

                            AccessibleObject associationMethod = associationDescriptor.accessor();
                            Association<Object> association = associationState.associationFor( associationMethod );
                            return EntityReference.entityReferenceFor( association.get() );
                        }
                    },
                    new Function<AssociationDescriptor, Iterable<EntityReference>>()
                    {
                        @Override
                        public Iterable<EntityReference> map( final AssociationDescriptor descriptor )
                        {
                            AssociationDescriptor associationDescriptor;
                            try
                            {
                                String associationName = descriptor.qualifiedName().name();
                                AssociationStateDescriptor entityState = entityDescriptor.state();
                                associationDescriptor = entityState.getManyAssociationByName( associationName );
                            }
                            catch( IllegalArgumentException e )
                            {
                                return Iterables.empty();
                            }

                            ManyAssociation<?> state = associationState.manyAssociationFor( associationDescriptor.accessor() );
                            List<EntityReference> refs = new ArrayList<>( state.count() );
                            for( Object entity : state )
                            {
                                refs.add( EntityReference.entityReferenceFor( entity ) );
                            }
                            return refs;
                        }
                    },
                    new Function<AssociationDescriptor, Map<String, EntityReference>>()
                    {
                        @Override
                        public Map<String, EntityReference> map( AssociationDescriptor descriptor )
                        {
                            AssociationDescriptor associationDescriptor;
                            try
                            {
                                String associationName = descriptor.qualifiedName().name();
                                AssociationStateDescriptor entityState = entityDescriptor.state();
                                associationDescriptor = entityState.getNamedAssociationByName( associationName );
                            }
                            catch( IllegalArgumentException e )
                            {
                                return Collections.emptyMap();
                            }
                            AccessibleObject associationMethod = associationDescriptor.accessor();
                            NamedAssociation<Object> assoc = associationState.namedAssociationFor( associationMethod );
                            Map<String, EntityReference> refs = new LinkedHashMap<>( assoc.count() );
                            for( String name : assoc )
                            {
                                refs.put( name, EntityReference.entityReferenceFor( assoc.get( name ) ) );
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  • org.qi4j.runtime.association.AssociationEqualityTest
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  • org.qi4j.sample.dcicargo.sample_a.infrastructure.conversion.EntityToDTOService$Mixin
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