/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.aries.blueprint.plugin.handlers.javax;
import org.apache.aries.blueprint.plugin.spi.BeanEnricher;
import org.apache.aries.blueprint.plugin.spi.ContextEnricher;
import org.apache.aries.blueprint.plugin.spi.FieldAnnotationHandler;
import org.apache.aries.blueprint.plugin.spi.XmlWriter;
import javax.persistence.PersistenceUnit;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import java.lang.reflect.Field;
import java.util.List;
import static org.apache.aries.blueprint.plugin.handlers.javax.Namespaces.PATTERN_NS_JPA1;
import static org.apache.aries.blueprint.plugin.handlers.javax.Namespaces.PATTERN_NS_JPA2;
import static org.apache.aries.blueprint.plugin.handlers.javax.Namespaces.getNamespaceByPattern;
public class PersistenceUnitHandler implements FieldAnnotationHandler<PersistenceUnit> {
@Override
public Class<PersistenceUnit> getAnnotation() {
return PersistenceUnit.class;
}
@Override
public void handleFieldAnnotation(Class<?> clazz, List<Field> fields, ContextEnricher contextEnricher, BeanEnricher beanEnricher) {
final String nsJpa1 = getNamespaceByPattern(contextEnricher.getBlueprintConfiguration().getNamespaces(), PATTERN_NS_JPA1);
if (nsJpa1 != null) {
for (final Field field : fields) {
final String name = field.getName();
final PersistenceUnit persistenceUnit = field.getAnnotation(PersistenceUnit.class);
beanEnricher.addBeanContentWriter("javax.persistence.field.unit/" + name, new XmlWriter() {
@Override
public void write(XMLStreamWriter writer) throws XMLStreamException {
writer.writeEmptyElement("unit");
writer.writeDefaultNamespace(nsJpa1);
writer.writeAttribute("unitname", persistenceUnit.unitName());
writer.writeAttribute("property", name);
}
});
}
}
final String nsJpa2 = getNamespaceByPattern(contextEnricher.getBlueprintConfiguration().getNamespaces(), PATTERN_NS_JPA2);
if (nsJpa2 != null) {
contextEnricher.addBlueprintContentWriter("javax.persistence.enableJpa2", new XmlWriter() {
@Override
public void write(XMLStreamWriter writer) throws XMLStreamException {
writer.writeEmptyElement("enable");
writer.writeDefaultNamespace(nsJpa2);
}
});
}
}
}