/**
*
* Copyright 2009-2010 Rickard Öberg AB
*
* 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.eventsourcing.domain.factory;
import org.json.JSONException;
import org.json.JSONObject;
import org.json.JSONStringer;
import org.json.JSONWriter;
import org.qi4j.api.Qi4j;
import org.qi4j.api.concern.Concerns;
import org.qi4j.api.entity.EntityComposite;
import org.qi4j.api.injection.scope.Structure;
import org.qi4j.api.mixin.Mixins;
import org.qi4j.api.service.ServiceComposite;
import org.qi4j.api.value.ValueBuilder;
import org.qi4j.api.value.ValueBuilderFactory;
import org.qi4j.library.eventsourcing.domain.api.DomainEventValue;
import static org.qi4j.functional.Iterables.first;
/**
* DomainEventValue factory
*/
@Concerns(UnitOfWorkNotificationConcern.class)
@Mixins(DomainEventFactoryService.DomainEventFactoryMixin.class)
public interface DomainEventFactoryService
extends DomainEventFactory, ServiceComposite
{
class DomainEventFactoryMixin
implements DomainEventFactory
{
@Structure
private ValueBuilderFactory vbf;
@Override
public DomainEventValue createEvent( EntityComposite entity, String name, Object[] args )
{
ValueBuilder<DomainEventValue> builder = vbf.newValueBuilder( DomainEventValue.class );
DomainEventValue prototype = builder.prototype();
prototype.name().set( name );
prototype.entityType().set( first(Qi4j.FUNCTION_DESCRIPTOR_FOR.map( entity ).types()).getName() );
prototype.entityId().set( entity.identity().get() );
// JSON-ify parameters
JSONStringer json = new JSONStringer();
try
{
JSONWriter params = json.object();
for (int i = 0; i < args.length; i++)
{
params.key( "param" + i );
if (args[i] == null)
params.value( JSONObject.NULL );
else
params.value( args[i] );
}
json.endObject();
} catch (JSONException e)
{
throw new IllegalArgumentException( "Could not create eventValue", e );
}
prototype.parameters().set( json.toString() );
DomainEventValue eventValue = builder.newInstance();
return eventValue;
}
}
}