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/*
* 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.apache.tuscany.persistence.datasource;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import org.apache.tuscany.spi.ObjectFactory;
import org.apache.tuscany.spi.builder.BuilderConfigException;
import org.apache.tuscany.spi.component.Component;
import org.apache.tuscany.spi.deployer.DeploymentContext;
import org.apache.tuscany.spi.extension.ComponentBuilderExtension;
import org.apache.tuscany.spi.implementation.java.JavaMappedProperty;
import org.apache.tuscany.spi.model.ComponentDefinition;
import org.apache.tuscany.spi.model.ComponentType;
import org.apache.tuscany.spi.model.PropertyValue;
/**
* Builds a {@link DataSourceComponent} from its model representation
*
* @version $Rev$ $Date$
*/
public class DataSourceBuilder extends ComponentBuilderExtension<DataSourceImplementation> {
protected Class<DataSourceImplementation> getImplementationType() {
return DataSourceImplementation.class;
}
public Component build(ComponentDefinition<DataSourceImplementation> definition,
DeploymentContext deploymentContext) throws BuilderConfigException {
try {
DataSourceImplementation implementation = definition.getImplementation();
ClassLoader classLoader = implementation.getClassLoader();
Class<?> beanClass = classLoader.loadClass(implementation.getProviderName());
List<Injector> injectors = new ArrayList<Injector>();
// handle properties
ComponentType type = definition.getImplementation().getComponentType();
for (PropertyValue<?> property : definition.getPropertyValues().values()) {
ObjectFactory<?> factory = property.getValueFactory();
if (factory != null) {
String name = property.getName();
JavaMappedProperty mappedProperty = (JavaMappedProperty) type.getProperties().get(name);
if (mappedProperty == null) {
throw new MissingPropertyException(name);
}
Injector injector = new Injector((Method) mappedProperty.getMember(), factory);
injectors.add(injector);
}
}
ProviderObjectFactory providerFactory = new ProviderObjectFactory(beanClass, injectors);
int initLevel = implementation.getComponentType().getInitLevel();
return new DataSourceComponent(definition.getUri(), providerFactory, initLevel);
} catch (ClassNotFoundException e) {
throw new BuilderConfigException(e);
}
}
}
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