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/**
*
* Copyright 2005 The Apache Software Foundation
*
* 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.apache.tuscany.core.system.config.processor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import org.apache.tuscany.core.config.ConfigurationLoadException;
import org.apache.tuscany.core.config.InvalidSetterException;
import org.apache.tuscany.core.config.processor.ImplementationProcessorSupport;
import org.apache.tuscany.core.system.annotation.Autowire;
import org.apache.tuscany.core.system.config.extensibility.AutowireExtensibilityElement;
import org.apache.tuscany.core.context.SystemCompositeContext;
import org.apache.tuscany.core.context.ConfigurationContext;
import org.apache.tuscany.core.context.AutowireContext;
import org.apache.tuscany.core.runtime.RuntimeContext;
import org.apache.tuscany.core.builder.BuilderConfigException;
import org.apache.tuscany.model.assembly.ComponentType;
import org.apache.tuscany.common.monitor.MonitorFactory;
/**
* Processes {@link Autowire} annotations
*
* @version $$Rev$$ $$Date$$
*/
public class AutowireProcessor extends ImplementationProcessorSupport {
@Override
public void visitMethod(Method method, ComponentType type) throws ConfigurationLoadException {
Autowire annotation = method.getAnnotation(Autowire.class);
if (annotation != null) {
if (!Modifier.isPublic(method.getModifiers())) {
InvalidSetterException e = new InvalidSetterException("Autowire setter method is not public");
e.setIdentifier(method.toString());
throw e;
}
if (method.getParameterTypes().length != 1){
InvalidSetterException e = new InvalidSetterException("Autowire setter method must have one parameter");
e.setIdentifier(method.toString());
throw e;
}
checkAutowireType(method.getParameterTypes()[0],method.getDeclaringClass());
type.getExtensibilityElements().add(new AutowireExtensibilityElement(method));
}
}
@Override
public void visitField(Field field, ComponentType type) throws ConfigurationLoadException {
checkAutowireType(field.getType(),field.getDeclaringClass());
int modifiers = field.getModifiers();
Autowire annotation = field.getAnnotation(Autowire.class);
if (annotation != null) {
if (!Modifier.isPublic(modifiers) && !Modifier.isProtected(modifiers)) {
InvalidSetterException e = new InvalidSetterException("Autowire field is not public or protected");
e.setIdentifier(field.getName());
throw e;
}
type.getExtensibilityElements().add(new AutowireExtensibilityElement(field));
}
}
private void checkAutowireType(Class paramClass, Class declaringClass) throws BuilderConfigException{
if (SystemCompositeContext.class.isAssignableFrom(declaringClass)
&& !(paramClass.equals(ConfigurationContext.class)
|| paramClass.equals(MonitorFactory.class)
|| paramClass.equals(RuntimeContext.class) || paramClass.equals(
AutowireContext.class))) {
BuilderConfigException e = new BuilderConfigException("Illegal autowire type for system context");
e.setIdentifier(paramClass.getName());
throw e;
}
}
}
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