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/*
 * Fabric3
 * Copyright ? 2008 Metaform Systems Limited
 *
 * This proprietary software may be used only connection with the Fabric3 license
 * (the ?License?), a copy of which is included in the software or may be
 * obtained at: http://www.metaformsystems.com/licenses/license.html.

 * Software distributed under the License is distributed on an ?as is? basis,
 * without warranties or conditions of any kind.  See the License for the
 * specific language governing permissions and limitations of use of the software.
 * This software is distributed in conjunction with other software licensed under
 * different terms.  See the separate licenses for those programs included in the
 * distribution for the permitted and restricted uses of such software.
 *
 * --- Original Apache License ---
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.fabric3.introspection.impl.annotation;

import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import org.osoa.sca.annotations.Reference;
import org.osoa.sca.annotations.Service;

import org.fabric3.model.type.component.Implementation;
import org.fabric3.model.type.component.ServiceDefinition;
import org.fabric3.model.type.java.InjectingComponentType;
import org.fabric3.model.type.service.ServiceContract;
import org.fabric3.spi.introspection.IntrospectionContext;
import org.fabric3.spi.introspection.TypeMapping;
import org.fabric3.spi.introspection.contract.ContractProcessor;
import org.fabric3.spi.introspection.java.AbstractAnnotationProcessor;
import org.fabric3.spi.introspection.java.PolicyAnnotationProcessor;

/**
 * @version $Rev: 6534 $ $Date: 2009-02-12 08:55:16 -0800 (Thu, 12 Feb 2009) $
 */
public class ServiceProcessor> extends AbstractAnnotationProcessor {
    private final ContractProcessor contractProcessor;
    private PolicyAnnotationProcessor policyProcessor;

    public ServiceProcessor(@Reference ContractProcessor contractProcessor) {
        super(Service.class);
        this.contractProcessor = contractProcessor;
    }

    @Reference
    public void setPolicyProcessor(PolicyAnnotationProcessor processor) {
        this.policyProcessor = processor;
    }

    public void visitType(Service annotation, Class type, I implementation, IntrospectionContext context) {
        TypeMapping typeMapping = context.getTypeMapping();
        InjectingComponentType componentType = implementation.getComponentType();

        for (Class service : annotation.interfaces()) {
            ServiceDefinition definition = createDefinition(service, typeMapping, context);
            componentType.add(definition);
        }

        Class service = annotation.value();
        if (!Void.class.equals(service)) {
            ServiceDefinition definition = createDefinition(service, typeMapping, context);
            componentType.add(definition);
        }
    }

    @SuppressWarnings({"unchecked"})
    private ServiceDefinition createDefinition(Class service, TypeMapping typeMapping, IntrospectionContext context) {
        ServiceContract serviceContract = contractProcessor.introspect(typeMapping, service, context);
        ServiceDefinition definition = new ServiceDefinition(serviceContract.getInterfaceName(), serviceContract);
        Annotation[] annotations = service.getAnnotations();
        if (policyProcessor != null) {
            for (Annotation annotation : annotations) {
                policyProcessor.process(annotation, definition, context);
            }
        }
        return definition;
    }
}