/* Copyright 2009 Tonny Kohar.
*
* 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.tools.model.util;
import org.qi4j.api.composite.ModelDescriptor;
import org.qi4j.tools.model.descriptor.ApplicationDetailDescriptor;
import org.qi4j.tools.model.descriptor.CompositeDetailDescriptor;
import org.qi4j.tools.model.descriptor.EntityDetailDescriptor;
import org.qi4j.tools.model.descriptor.LayerDetailDescriptor;
import org.qi4j.tools.model.descriptor.ModuleDetailDescriptor;
import org.qi4j.tools.model.descriptor.ObjectDetailDescriptor;
import org.qi4j.tools.model.descriptor.ServiceDetailDescriptor;
import org.qi4j.tools.model.descriptor.ValueDetailDescriptor;
import static org.qi4j.functional.Iterables.first;
class ServiceConfigurationFinder
{
public Object findConfigurationDescriptor( ServiceDetailDescriptor descriptor )
{
Class<?> configType = descriptor.descriptor().configurationType();
if( configType == null )
{
return null;
}
// traverse the appDescritor to find the configurationDescriptor
ApplicationDetailDescriptor appDescriptor = descriptor.module().layer().application();
Object obj = findConfigurationDescriptor( appDescriptor, configType );
if( obj == null )
{
return null;
}
return obj;
}
private Object findConfigurationDescriptor( ApplicationDetailDescriptor descriptor, Class<?> configType )
{
Object configDescriptor = null;
for( LayerDetailDescriptor childDescriptor : descriptor.layers() )
{
Object obj = findInModules( childDescriptor.modules(), configType );
if( obj != null )
{
configDescriptor = obj;
break;
}
}
return configDescriptor;
}
private Object findInModules( Iterable<ModuleDetailDescriptor> iter, Class<?> configType )
{
Object configDescriptor = null;
for( ModuleDetailDescriptor descriptor : iter )
{
Object obj = findInTypes( descriptor.services(), configType );
if( obj != null )
{
configDescriptor = obj;
break;
}
obj = findInTypes( descriptor.entities(), configType );
if( obj != null )
{
configDescriptor = obj;
break;
}
// findInTransients
obj = findInTypes( descriptor.composites(), configType );
if( obj != null )
{
configDescriptor = obj;
break;
}
obj = findInTypes( descriptor.values(), configType );
if( obj != null )
{
configDescriptor = obj;
break;
}
obj = findInTypes( descriptor.objects(), configType );
if( obj != null )
{
configDescriptor = obj;
break;
}
}
return configDescriptor;
}
private Object findInTypes( Iterable iter, Class<?> configType )
{
Object configDescriptor = null;
for( Object obj : iter )
{
ModelDescriptor descriptor;
if( obj instanceof ServiceDetailDescriptor )
{
descriptor = ( (ServiceDetailDescriptor) obj ).descriptor();
}
else if( obj instanceof EntityDetailDescriptor )
{
descriptor = ( (EntityDetailDescriptor) obj ).descriptor();
}
else if( obj instanceof ValueDetailDescriptor )
{
descriptor = ( (ValueDetailDescriptor) obj ).descriptor();
}
else if( obj instanceof ObjectDetailDescriptor )
{
descriptor = ( (ObjectDetailDescriptor) obj ).descriptor();
}
else
{
descriptor = ( (CompositeDetailDescriptor) obj ).descriptor();
}
if( configType.equals( first( descriptor.types() ) ) )
{
configDescriptor = obj;
break;
}
}
return configDescriptor;
}
}