# ValueToEntityMixin.java

    /*
     * Copyright (c) 2014-2015 Paul Merlin.
     *
     * 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.conversion.values;

    import java.util.ArrayList;
    import java.util.Collection;
    import java.util.Collections;
    import java.util.LinkedHashMap;
    import java.util.List;
    import java.util.Map;
    import org.qi4j.api.association.Association;
    import org.qi4j.api.association.AssociationDescriptor;
    import org.qi4j.api.association.AssociationStateDescriptor;
    import org.qi4j.api.association.AssociationStateHolder;
    import org.qi4j.api.association.ManyAssociation;
    import org.qi4j.api.association.NamedAssociation;
    import org.qi4j.api.common.QualifiedName;
    import org.qi4j.api.entity.EntityBuilder;
    import org.qi4j.api.entity.EntityComposite;
    import org.qi4j.api.entity.EntityDescriptor;
    import org.qi4j.api.entity.EntityReference;
    import org.qi4j.api.entity.Identity;
    import org.qi4j.api.injection.scope.Structure;
    import org.qi4j.api.property.PropertyDescriptor;
    import org.qi4j.api.unitofwork.EntityTypeNotFoundException;
    import org.qi4j.api.unitofwork.NoSuchEntityException;
    import org.qi4j.api.value.ValueComposite;
    import org.qi4j.api.value.ValueDescriptor;
    import org.qi4j.functional.Function;
    import org.qi4j.functional.Iterables;
    import org.qi4j.spi.Qi4jSPI;
    import org.qi4j.spi.module.ModelModule;
    import org.qi4j.spi.module.ModuleSpi;

    import static org.qi4j.functional.Iterables.map;
    import static org.qi4j.library.conversion.values.Shared.STRING_COLLECTION_TYPE_SPEC;
    import static org.qi4j.library.conversion.values.Shared.STRING_MAP_TYPE_SPEC;
    import static org.qi4j.library.conversion.values.Shared.STRING_TYPE_SPEC;

    /**
     * ValueToEntity Mixin.
     *
     * @deprecated Please use {@link org.qi4j.api.unitofwork.UnitOfWork#toEntity(Class, Identity)} instead.
     */
    public class ValueToEntityMixin
        implements ValueToEntity
    {
        private static final QualifiedName IDENTITY_STATE_NAME;
        private static final Function<ManyAssociation<?>, Iterable<EntityReference>> MANY_ASSOC_TO_ENTITY_REF_ITERABLE;
        private static final Function<NamedAssociation<?>, Map<String, EntityReference>> NAMED_ASSOC_TO_ENTITY_REF_MAP;
        private static final Function<Collection<String>, Iterable<EntityReference>> STRING_COLLEC_TO_ENTITY_REF_ITERABLE;
        private static final Function<Map<String, String>, Map<String, EntityReference>> STRING_MAP_TO_ENTITY_REF_MAP;

        static
        {
            try
            {
                IDENTITY_STATE_NAME = QualifiedName.fromAccessor( Identity.class.getMethod( "identity" ) );
            }
            catch( NoSuchMethodException e )
            {
                throw new InternalError( "Zest Core Runtime codebase is corrupted. Contact Zest team: ValueToEntityMixin" );
            }
            MANY_ASSOC_TO_ENTITY_REF_ITERABLE = new Function<ManyAssociation<?>, Iterable<EntityReference>>()
            {
                @Override
                public Iterable<EntityReference> map( ManyAssociation<?> manyAssoc )
                {
                    if( manyAssoc == null )
                    {
                        return Iterables.empty();
                    }
                    List<EntityReference> refs = new ArrayList<>( manyAssoc.count() );
                    for( Object entity : manyAssoc )
                    {
                        refs.add( EntityReference.entityReferenceFor( entity ) );
                    }
                    return refs;
                }
            };
            NAMED_ASSOC_TO_ENTITY_REF_MAP = new Function<NamedAssociation<?>, Map<String, EntityReference>>()
            {
                @Override
                public Map<String, EntityReference> map( NamedAssociation<?> namedAssoc )
                {
                    if( namedAssoc == null )
                    {
                        return Collections.emptyMap();
                    }
                    Map<String, EntityReference> refs = new LinkedHashMap<>( namedAssoc.count() );
                    for( String name : namedAssoc )
                    {
                        refs.put( name, EntityReference.entityReferenceFor( namedAssoc.get( name ) ) );
                    }
                    return refs;
                }
            };
            STRING_COLLEC_TO_ENTITY_REF_ITERABLE = new Function<Collection<String>, Iterable<EntityReference>>()
            {
                @Override
                public Iterable<EntityReference> map( Collection<String> stringCollec )
                {
                    if( stringCollec == null )
                    {
                        return Iterables.empty();
                    }
                    List<EntityReference> refList = new ArrayList<>();
                    for( String assId : stringCollec )
                    {
                        refList.add( EntityReference.parseEntityReference( assId ) );
                    }
                    return refList;
                }
            };
            STRING_MAP_TO_ENTITY_REF_MAP = new Function<Map<String, String>, Map<String, EntityReference>>()
            {
                @Override
                public Map<String, EntityReference> map( Map<String, String> stringMap )
                {
                    if( stringMap == null )
                    {
                        return Collections.emptyMap();
                    }
                    Map<String, EntityReference> refMap = new LinkedHashMap<>( stringMap.size() );
                    for( Map.Entry<String, String> entry : stringMap.entrySet() )
                    {
                        refMap.put( entry.getKey(), EntityReference.parseEntityReference( entry.getValue() ) );
                    }
                    return refMap;
                }
            };
        }

        @Structure
        private Qi4jSPI spi;

        @Structure
        private ModuleSpi module;

        @Override
        public <T> T create( Class<T> entityType, Object value )
        {
            return createInstance( doConversion( entityType, null, value ) );
        }

        @Override
        public <T> T create( Class<T> entityType, String identity, Object value )
        {
            return createInstance( doConversion( entityType, identity, value ) );
        }

        @Override
        public <T> T create( Class<T> entityType, Object value, Function<T, T> prototypeOpportunity )
        {
            EntityBuilder<?> builder = doConversion( entityType, null, value );
            prototypeOpportunity.map( (T) builder.instance() );
            return createInstance( builder );
        }

        @Override
        public <T> T create( Class<T> entityType, String identity, Object value, Function<T, T> prototypeOpportunity )
        {
            EntityBuilder<?> builder = doConversion( entityType, identity, value );
            prototypeOpportunity.map( (T) builder.instance() );
            return createInstance( builder );
        }

        @Override
        public <T> Iterable<T> create( final Class<T> entityType, final Iterable<Object> values )
        {
            return Iterables.map(
                new Function<Object, T>()
                {
                    @Override
                    public T map( Object value )
                    {
                        return create( entityType, value );
                    }
                },
                values
            );
        }

        @Override
        public <T> Iterable<T> create( final Class<T> entityType,
                                       final Iterable<Object> values,
                                       final Function<T, T> prototypeOpportunity
        )
        {
            return Iterables.map(
                new Function<Object, T>()
                {
                    @Override
                    public T map( Object value )
                    {
                        return create( entityType, value, prototypeOpportunity );
                    }
                },
                values
            );
        }

        private <T> EntityBuilder<?> doConversion( Class<T> entityType, String identity, Object value )
        {
            EntityDescriptor eDesc = module.entityDescriptor( entityType.getName() );
            if( eDesc == null )
            {
                throw new EntityTypeNotFoundException( entityType.getName(),
                                                       module.name(),
                                                       map( ModelModule.toStringFunction,
                                                            module.findVisibleEntityTypes()
                                                       ) );
            }

            ValueComposite vComposite = (ValueComposite) value;

            ValueDescriptor vDesc = spi.valueDescriptorFor( vComposite );
            AssociationStateHolder vState = spi.stateOf( vComposite );
            AssociationStateDescriptor vStateDesc = vDesc.state();

            Unqualified unqualified = vDesc.metaInfo( Unqualified.class );
            if( unqualified == null || !unqualified.value() )
            {
                return doQualifiedConversion( entityType, identity, vState, vStateDesc );
            }
            return doUnqualifiedConversion( entityType, identity, vState, vStateDesc );
        }

        private <T> EntityBuilder<?> doQualifiedConversion(
            Class<T> entityType, String identity,
            final AssociationStateHolder vState, final AssociationStateDescriptor vStateDesc
        )
        {
            Function<PropertyDescriptor, Object> props
                = new Function<PropertyDescriptor, Object>()
            {
                @Override
                public Object map( PropertyDescriptor ePropDesc )
                {
                    try
                    {
                        return vState.propertyFor( ePropDesc.accessor() ).get();
                    }
                    catch( IllegalArgumentException propNotFoundOnValue )
                    {
                        // Property not found
                        return null;
                    }
                }
            };
            Function<AssociationDescriptor, EntityReference> assocs
                = new Function<AssociationDescriptor, EntityReference>()
            {
                @Override
                public EntityReference map( AssociationDescriptor eAssocDesc )
                {
                    try
                    {
                        return EntityReference.entityReferenceFor( vState.associationFor( eAssocDesc.accessor() ) );
                    }
                    catch( IllegalArgumentException assocNotFoundOnValue )
                    {
                        // Find String Property and convert to Association
                        String propName = eAssocDesc.qualifiedName().name();
                        try
                        {
                            PropertyDescriptor vPropDesc = vStateDesc.findPropertyModelByName( propName );
                            if( STRING_TYPE_SPEC.satisfiedBy( vPropDesc.valueType() ) )
                            {
                                String assocState = (String) vState.propertyFor( vPropDesc.accessor() ).get();
                                return EntityReference.parseEntityReference( assocState );
                            }
                            return null;
                        }
                        catch( IllegalArgumentException propNotFoundOnValue )
                        {
                            return null;
                        }
                    }
                }
            };
            Function<AssociationDescriptor, Iterable<EntityReference>> manyAssocs
                = new Function<AssociationDescriptor, Iterable<EntityReference>>()
            {
                @Override
                public Iterable<EntityReference> map( AssociationDescriptor eAssocDesc )
                {
                    try
                    {
                        ManyAssociation<Object> vAssocState = vState.manyAssociationFor( eAssocDesc.accessor() );
                        return MANY_ASSOC_TO_ENTITY_REF_ITERABLE.map( vAssocState );
                    }
                    catch( IllegalArgumentException assocNotFoundOnValue )
                    {
                        // Find Collection<String> Property and convert to ManyAssociation
                        String propName = eAssocDesc.qualifiedName().name();
                        try
                        {
                            PropertyDescriptor vPropDesc = vStateDesc.findPropertyModelByName( propName );
                            if( STRING_COLLECTION_TYPE_SPEC.satisfiedBy( vPropDesc.valueType() ) )
                            {
                                Collection<String> vAssocState = (Collection) vState
                                    .propertyFor( vPropDesc.accessor() ).get();
                                return STRING_COLLEC_TO_ENTITY_REF_ITERABLE.map( vAssocState );
                            }
                            return Iterables.empty();
                        }
                        catch( IllegalArgumentException propNotFoundOnValue )
                        {
                            return Iterables.empty();
                        }
                    }
                }
            };
            Function<AssociationDescriptor, Map<String, EntityReference>> namedAssocs
                = new Function<AssociationDescriptor, Map<String, EntityReference>>()
            {
                @Override
                public Map<String, EntityReference> map( AssociationDescriptor eAssocDesc )
                {
                    try
                    {
                        NamedAssociation<?> vAssocState = vState.namedAssociationFor( eAssocDesc.accessor() );
                        return NAMED_ASSOC_TO_ENTITY_REF_MAP.map( vAssocState );
                    }
                    catch( IllegalArgumentException assocNotFoundOnValue )
                    {
                        // Find Map<String,String> Property and convert to NamedAssociation
                        String propName = eAssocDesc.qualifiedName().name();
                        try
                        {
                            PropertyDescriptor vPropDesc = vStateDesc.findPropertyModelByName( propName );
                            if( STRING_MAP_TYPE_SPEC.satisfiedBy( vPropDesc.valueType() ) )
                            {
                                Map<String, String> vAssocState = (Map) vState
                                    .propertyFor( vPropDesc.accessor() ).get();
                                return STRING_MAP_TO_ENTITY_REF_MAP.map( vAssocState );
                            }
                            return Collections.EMPTY_MAP;
                        }
                        catch( IllegalArgumentException propNotFoundOnValue )
                        {
                            return Collections.EMPTY_MAP;
                        }
                    }
                }
            };
            return module.currentUnitOfWork().newEntityBuilderWithState(
                entityType, identity, props, assocs, manyAssocs, namedAssocs
            );
        }

        private <T> EntityBuilder<?> doUnqualifiedConversion(
            Class<T> entityType, String identity,
            final AssociationStateHolder vState, final AssociationStateDescriptor vStateDesc
        )
        {
            Function<PropertyDescriptor, Object> props
                = new Function<PropertyDescriptor, Object>()
            {
                @Override
                public Object map( PropertyDescriptor ePropDesc )
                {
                    String propName = ePropDesc.qualifiedName().name();
                    try
                    {
                        PropertyDescriptor vPropDesc = vStateDesc.findPropertyModelByName( propName );
                        return vState.propertyFor( vPropDesc.accessor() ).get();
                    }
                    catch( IllegalArgumentException propNotFoundOnValue )
                    {
                        // Property not found on Value
                        return null;
                    }
                }
            };
            Function<AssociationDescriptor, EntityReference> assocs
                = new Function<AssociationDescriptor, EntityReference>()
            {
                @Override
                public EntityReference map( AssociationDescriptor eAssocDesc )
                {
                    String assocName = eAssocDesc.qualifiedName().name();
                    try
                    {
                        AssociationDescriptor vAssocDesc = vStateDesc.getAssociationByName( assocName );
                        Object assocEntity = vState.associationFor( vAssocDesc.accessor() ).get();
                        return assocEntity == null ? null : EntityReference.entityReferenceFor( assocEntity );
                    }
                    catch( IllegalArgumentException assocNotFoundOnValue )
                    {
                        // Association not found on Value, find Property<String> and convert to Association
                        try
                        {
                            PropertyDescriptor vPropDesc = vStateDesc.findPropertyModelByName( assocName );
                            if( STRING_TYPE_SPEC.satisfiedBy( vPropDesc.valueType() ) )
                            {
                                String assocId = (String) vState.propertyFor( vPropDesc.accessor() ).get();
                                return assocId == null ? null : EntityReference.parseEntityReference( assocId );
                            }
                            return null;
                        }
                        catch( IllegalArgumentException propNotFoundOnValue )
                        {
                            return null;
                        }
                    }
                }
            };
            Function<AssociationDescriptor, Iterable<EntityReference>> manyAssocs
                = new Function<AssociationDescriptor, Iterable<EntityReference>>()
            {
                @Override
                public Iterable<EntityReference> map( AssociationDescriptor eAssocDesc )
                {
                    String assocName = eAssocDesc.qualifiedName().name();
                    try
                    {
                        AssociationDescriptor vAssocDesc = vStateDesc.getManyAssociationByName( assocName );
                        ManyAssociation<Object> vManyAssoc = vState.manyAssociationFor( vAssocDesc.accessor() );
                        return MANY_ASSOC_TO_ENTITY_REF_ITERABLE.map( vManyAssoc );
                    }
                    catch( IllegalArgumentException assocNotFoundOnValue )
                    {
                        // ManyAssociation not found on Value, find List<String> and convert to ManyAssociation
                        try
                        {
                            PropertyDescriptor vPropDesc = vStateDesc.findPropertyModelByName( assocName );
                            if( STRING_COLLECTION_TYPE_SPEC.satisfiedBy( vPropDesc.valueType() ) )
                            {
                                Collection<String> vAssocState = (Collection) vState
                                    .propertyFor( vPropDesc.accessor() ).get();
                                return STRING_COLLEC_TO_ENTITY_REF_ITERABLE.map( vAssocState );
                            }
                            return Iterables.empty();
                        }
                        catch( IllegalArgumentException propNotFoundOnValue )
                        {
                            return Iterables.empty();
                        }
                    }
                }
            };
            Function<AssociationDescriptor, Map<String, EntityReference>> namedAssocs
                = new Function<AssociationDescriptor, Map<String, EntityReference>>()
            {
                @Override
                public Map<String, EntityReference> map( AssociationDescriptor eAssocDesc )
                {
                    String assocName = eAssocDesc.qualifiedName().name();
                    try
                    {
                        AssociationDescriptor vAssocDesc = vStateDesc.getNamedAssociationByName( assocName );
                        NamedAssociation<Object> vAssocState = vState.namedAssociationFor( vAssocDesc.accessor() );
                        return NAMED_ASSOC_TO_ENTITY_REF_MAP.map( vAssocState );
                    }
                    catch( IllegalArgumentException assocNotFoundOnValue )
                    {
                        // Find Map<String,String> Property and convert to NamedAssociation
                        try
                        {
                            PropertyDescriptor vPropDesc = vStateDesc.findPropertyModelByName( assocName );
                            if( STRING_MAP_TYPE_SPEC.satisfiedBy( vPropDesc.valueType() ) )
                            {
                                Map<String, String> vAssocState = (Map) vState
                                    .propertyFor( vPropDesc.accessor() ).get();
                                return STRING_MAP_TO_ENTITY_REF_MAP.map( vAssocState );
                            }
                            return Collections.EMPTY_MAP;
                        }
                        catch( IllegalArgumentException propNotFoundOnValue )
                        {
                            return Collections.EMPTY_MAP;
                        }
                    }
                }
            };
            return module.currentUnitOfWork().newEntityBuilderWithState(
                entityType, identity, props, assocs, manyAssocs, namedAssocs
            );
        }

        protected <T> T createInstance( EntityBuilder<?> builder )
        {
            return (T) builder.newInstance();
        }

        @Override
        public void update( Object entity, Object value )
            throws NoSuchEntityException
        {
            EntityComposite eComposite = (EntityComposite) entity;
            ValueComposite vComposite = (ValueComposite) value;

            EntityDescriptor eDesc = spi.entityDescriptorFor( eComposite );
            AssociationStateHolder eState = spi.stateOf( eComposite );
            AssociationStateDescriptor eStateDesc = eDesc.state();

            ValueDescriptor vDesc = spi.valueDescriptorFor( vComposite );
            AssociationStateHolder vState = spi.stateOf( vComposite );
            AssociationStateDescriptor vStateDesc = vDesc.state();

            Unqualified unqualified = vDesc.metaInfo( Unqualified.class );
            if( unqualified == null || !unqualified.value() )
            {
                doQualifiedUpdate( eState, eStateDesc, vState, vStateDesc );
            }
            else
            {
                doUnQualifiedUpdate( eState, eStateDesc, vState, vStateDesc );
            }
        }

        private void doQualifiedUpdate(
            AssociationStateHolder eState, AssociationStateDescriptor eStateDesc,
            AssociationStateHolder vState, AssociationStateDescriptor vStateDesc
        )
            throws NoSuchEntityException
        {
            for( PropertyDescriptor ePropDesc : eStateDesc.properties() )
            {
                if( IDENTITY_STATE_NAME.equals( ePropDesc.qualifiedName() ) )
                {
                    // Ignore Identity, could be logged
                    continue;
                }
                try
                {
                    PropertyDescriptor vPropDesc = vStateDesc.findPropertyModelByQualifiedName( ePropDesc.qualifiedName() );
                    eState.propertyFor( ePropDesc.accessor() ).set( vState.propertyFor( vPropDesc.accessor() ).get() );
                }
                catch( IllegalArgumentException propNotFoundOnValue )
                {
                    // Property not found on Value, do nothing
                }
            }
            for( AssociationDescriptor eAssocDesc : eStateDesc.associations() )
            {
                Association<Object> eAssoc = eState.associationFor( eAssocDesc.accessor() );
                try
                {
                    AssociationDescriptor vAssocDesc
                        = vStateDesc.getAssociationByQualifiedName( eAssocDesc.qualifiedName() );
                    eAssoc.set( vState.associationFor( vAssocDesc.accessor() ).get() );
                }
                catch( IllegalArgumentException assocNotFoundOnValue )
                {
                    // Association not found on Value, find Property<String> and load associated Entity
                    try
                    {
                        PropertyDescriptor vPropDesc
                            = vStateDesc.findPropertyModelByName( eAssocDesc.qualifiedName().name() );
                        if( STRING_TYPE_SPEC.satisfiedBy( vPropDesc.valueType() ) )
                        {
                            String assocId = (String) vState.propertyFor( vPropDesc.accessor() ).get();
                            if( assocId != null )
                            {
                                eAssoc.set( module.currentUnitOfWork().get( (Class) eAssocDesc.type(), assocId ) );
                            }
                            else
                            {
                                eAssoc.set( null );
                            }
                        }
                    }
                    catch( IllegalArgumentException propNotFoundOnValue )
                    {
                        // Do nothing
                    }
                }
            }
            for( AssociationDescriptor eAssocDesc : eStateDesc.manyAssociations() )
            {
                ManyAssociation<Object> eManyAssoc = eState.manyAssociationFor( eAssocDesc.accessor() );
                try
                {
                    AssociationDescriptor vAssocDesc
                        = vStateDesc.getManyAssociationByQualifiedName( eAssocDesc.qualifiedName() );
                    ManyAssociation<Object> vManyAssoc = vState.manyAssociationFor( vAssocDesc.accessor() );
                    for( Object assoc : eManyAssoc.toList() )
                    {
                        eManyAssoc.remove( assoc );
                    }
                    for( Object assoc : vManyAssoc.toList() )
                    {
                        eManyAssoc.add( assoc );
                    }
                }
                catch( IllegalArgumentException assocNotFoundOnValue )
                {
                    // ManyAssociation not found on Value, find Property<List<String>> and load associated Entities
                    try
                    {
                        PropertyDescriptor vPropDesc
                            = vStateDesc.findPropertyModelByName( eAssocDesc.qualifiedName().name() );
                        if( STRING_COLLECTION_TYPE_SPEC.satisfiedBy( vPropDesc.valueType() ) )
                        {
                            Collection<String> vAssocState = (Collection) vState.propertyFor( vPropDesc.accessor() ).get();
                            for( Object assoc : eManyAssoc.toList() )
                            {
                                eManyAssoc.remove( assoc );
                            }
                            if( vAssocState != null )
                            {
                                for( String eachAssoc : vAssocState )
                                {
                                    eManyAssoc.add(
                                        module.currentUnitOfWork().get( (Class) eAssocDesc.type(), eachAssoc )
                                    );
                                }
                            }
                        }
                    }
                    catch( IllegalArgumentException propNotFoundOnValue )
                    {
                        // Do nothing
                    }
                }
            }
            for( AssociationDescriptor eAssocDesc : eStateDesc.namedAssociations() )
            {
                NamedAssociation<Object> eNamedAssoc = eState.namedAssociationFor( eAssocDesc.accessor() );
                try
                {
                    AssociationDescriptor vAssocDesc
                        = vStateDesc.getNamedAssociationByQualifiedName( eAssocDesc.qualifiedName() );
                    NamedAssociation<Object> vNamedAssoc = vState.namedAssociationFor( vAssocDesc.accessor() );
                    for( String assocName : Iterables.toList( eNamedAssoc ) )
                    {
                        eNamedAssoc.remove( assocName );
                    }
                    for( Map.Entry<String, Object> assocEntry : vNamedAssoc.toMap().entrySet() )
                    {
                        eNamedAssoc.put( assocEntry.getKey(), assocEntry.getValue() );
                    }
                }
                catch( IllegalArgumentException assocNotFoundOnValue )
                {
                    // NamedAssociation not found on Value, find Property<Map<String,String>> and load associated Entities
                    try
                    {
                        PropertyDescriptor vPropDesc
                            = vStateDesc.findPropertyModelByName( eAssocDesc.qualifiedName().name() );
                        if( STRING_MAP_TYPE_SPEC.satisfiedBy( vPropDesc.valueType() ) )
                        {
                            Map<String, String> vAssocState = (Map) vState.propertyFor( vPropDesc.accessor() ).get();
                            for( String assocName : Iterables.toList( eNamedAssoc ) )
                            {
                                eNamedAssoc.remove( assocName );
                            }
                            if( vAssocState != null )
                            {
                                for( Map.Entry<String, String> assocEntry : vAssocState.entrySet() )
                                {
                                    eNamedAssoc.put(
                                        assocEntry.getKey(),
                                        module.currentUnitOfWork().get( (Class) eAssocDesc.type(), assocEntry.getValue() )
                                    );
                                }
                            }
                        }
                    }
                    catch( IllegalArgumentException propNotFoundOnValue )
                    {
                        // Do nothing
                    }
                }
            }
        }

        private void doUnQualifiedUpdate(
            AssociationStateHolder eState, AssociationStateDescriptor eStateDesc,
            AssociationStateHolder vState, AssociationStateDescriptor vStateDesc
        )
        {
            for( PropertyDescriptor ePropDesc : eStateDesc.properties() )
            {
                if( IDENTITY_STATE_NAME.equals( ePropDesc.qualifiedName() ) )
                {
                    // Ignore Identity, could be logged
                    continue;
                }
                try
                {
                    PropertyDescriptor vPropDesc = vStateDesc.findPropertyModelByName( ePropDesc.qualifiedName().name() );
                    eState.propertyFor( ePropDesc.accessor() ).set( vState.propertyFor( vPropDesc.accessor() ).get() );
                }
                catch( IllegalArgumentException propNotFoundOnValue )
                {
                    // Property not found on Value, do nothing
                }
            }
            for( AssociationDescriptor eAssocDesc : eStateDesc.associations() )
            {
                Association<Object> eAssoc = eState.associationFor( eAssocDesc.accessor() );
                try
                {
                    AssociationDescriptor vAssocDesc = vStateDesc.getAssociationByName( eAssocDesc.qualifiedName().name() );
                    eAssoc.set( vState.associationFor( vAssocDesc.accessor() ).get() );
                }
                catch( IllegalArgumentException assocNotFoundOnValue )
                {
                    // Association not found on Value, find Property<String> and load associated Entity
                    try
                    {
                        PropertyDescriptor vPropDesc
                            = vStateDesc.findPropertyModelByName( eAssocDesc.qualifiedName().name() );
                        if( STRING_TYPE_SPEC.satisfiedBy( vPropDesc.valueType() ) )
                        {
                            String assocId = (String) vState.propertyFor( vPropDesc.accessor() ).get();
                            if( assocId != null )
                            {
                                eAssoc.set( module.currentUnitOfWork().get( (Class) eAssocDesc.type(), assocId ) );
                            }
                            else
                            {
                                eAssoc.set( null );
                            }
                        }
                    }
                    catch( IllegalArgumentException propNotFoundOnValue )
                    {
                        // Do nothing
                    }
                }
            }
            for( AssociationDescriptor eAssocDesc : eStateDesc.manyAssociations() )
            {
                ManyAssociation<Object> eManyAssoc = eState.manyAssociationFor( eAssocDesc.accessor() );
                try
                {
                    AssociationDescriptor vAssDesc
                        = vStateDesc.getManyAssociationByName( eAssocDesc.qualifiedName().name() );
                    ManyAssociation<Object> vManyAss = vState.manyAssociationFor( vAssDesc.accessor() );
                    for( Object ass : eManyAssoc.toList() )
                    {
                        eManyAssoc.remove( ass );
                    }
                    for( Object ass : vManyAss.toList() )
                    {
                        eManyAssoc.add( ass );
                    }
                }
                catch( IllegalArgumentException assNotFoundOnValue )
                {
                    // ManyAssociation not found on Value, find Property<List<String>> and load associated Entities
                    try
                    {
                        PropertyDescriptor vPropDesc
                            = vStateDesc.findPropertyModelByName( eAssocDesc.qualifiedName().name() );
                        if( STRING_COLLECTION_TYPE_SPEC.satisfiedBy( vPropDesc.valueType() ) )
                        {
                            Collection<String> vAssocState = (Collection) vState.propertyFor( vPropDesc.accessor() ).get();
                            for( Object ass : eManyAssoc.toList() )
                            {
                                eManyAssoc.remove( ass );
                            }
                            if( vAssocState != null )
                            {
                                for( String eachAssoc : vAssocState )
                                {
                                    eManyAssoc.add(
                                        module.currentUnitOfWork().get( (Class) eAssocDesc.type(), eachAssoc )
                                    );
                                }
                            }
                        }
                    }
                    catch( IllegalArgumentException propNotFoundOnValue )
                    {
                        // Do nothing
                    }
                }
            }
            for( AssociationDescriptor eAssocDesc : eStateDesc.namedAssociations() )
            {
                NamedAssociation<Object> eNamedAssoc = eState.namedAssociationFor( eAssocDesc.accessor() );
                try
                {
                    AssociationDescriptor vAssocDesc
                        = vStateDesc.getNamedAssociationByName( eAssocDesc.qualifiedName().name() );
                    NamedAssociation<Object> vNamedAssoc = vState.namedAssociationFor( vAssocDesc.accessor() );
                    for( String assocName : Iterables.toList( eNamedAssoc ) )
                    {
                        eNamedAssoc.remove( assocName );
                    }
                    for( Map.Entry<String, Object> assocEntry : vNamedAssoc.toMap().entrySet() )
                    {
                        eNamedAssoc.put( assocEntry.getKey(), assocEntry.getValue() );
                    }
                }
                catch( IllegalArgumentException assocNotFoundOnValue )
                {
                    // NamedAssociation not found on Value, find Property<Map<String,String>> and load associated Entities
                    try
                    {
                        PropertyDescriptor vPropDesc
                            = vStateDesc.findPropertyModelByName( eAssocDesc.qualifiedName().name() );
                        if( STRING_MAP_TYPE_SPEC.satisfiedBy( vPropDesc.valueType() ) )
                        {
                            Map<String, String> vAssocState = (Map) vState.propertyFor( vPropDesc.accessor() ).get();
                            for( String assocName : Iterables.toList( eNamedAssoc ) )
                            {
                                eNamedAssoc.remove( assocName );
                            }
                            if( vAssocState != null )
                            {
                                for( Map.Entry<String, String> assocEntry : vAssocState.entrySet() )
                                {
                                    eNamedAssoc.put(
                                        assocEntry.getKey(),
                                        module.currentUnitOfWork().get( (Class) eAssocDesc.type(), assocEntry.getValue() )
                                    );
                                }
                            }
                        }
                    }
                    catch( IllegalArgumentException propNotFoundOnValue )
                    {
                        // Do nothing
                    }
                }
            }
        }
    }