/*
* Copyright 2012 PRODYNA AG
*
* Licensed under the Eclipse Public License (EPL), Version 1.0 (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.opensource.org/licenses/eclipse-1.0.php or
* http://www.nabucco.org/License.html
*
* 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.nabucco.testautomation.facade.service.importing;
import java.util.List;
import javax.persistence.EntityManager;
import org.nabucco.framework.base.facade.datatype.Datatype;
import org.nabucco.framework.base.facade.datatype.DatatypeState;
import org.nabucco.framework.base.facade.datatype.Identifier;
import org.nabucco.framework.base.facade.datatype.NabuccoDatatype;
import org.nabucco.framework.base.facade.datatype.Owner;
import org.nabucco.framework.base.facade.datatype.importing.ImportContainer;
import org.nabucco.framework.base.facade.datatype.importing.ImportContext;
import org.nabucco.framework.base.facade.datatype.importing.ImportContextEntry;
import org.nabucco.framework.base.facade.datatype.serialization.DeserializationData;
import org.nabucco.framework.base.facade.datatype.serialization.SerializationException;
import org.nabucco.framework.base.facade.datatype.serialization.xml.XmlSerializer;
import org.nabucco.framework.base.facade.exception.importing.ImportException;
import org.nabucco.framework.base.facade.exception.persistence.PersistenceException;
import org.nabucco.framework.base.impl.service.maintain.PersistenceHelper;
/**
* BasicImporter
*
* @author Steffen Schmidt, PRODYNA AG
*/
public abstract class BasicImporter {
private EntityManager em;
private PersistenceHelper helper;
private ImportContext importContext;
/**
*
* @param em
* @param importContext
*/
protected BasicImporter(EntityManager em, ImportContext importContext) {
this.em = em;
this.helper = new PersistenceHelper(em);
this.importContext = importContext;
}
/**
*
* @param importContainer
* @throws ImportException
*/
public void handleImport(ImportContainer importContainer) throws ImportException {
try {
// Deserialization
List<Datatype> deserialized = deserialize(importContainer);
// Delete all existing entities of the importing owner
this.deleteAll(this.getOwner());
// Import all entities
this.importContext.getEntries().addAll(this.importAll(deserialized));
} catch (SerializationException ex) {
throw new ImportException("Deserialization of ImportData failed !", ex);
}
}
/**
*
* @param importContainer
* @return
* @throws SerializationException
*/
protected List<Datatype> deserialize(ImportContainer importContainer) throws SerializationException {
XmlSerializer xmlSerializer = new XmlSerializer();
DeserializationData data = new DeserializationData(importContainer.getContent().getValue());
data.setResourceData(importContainer.getResourceData().getValue());
List<Datatype> deserialized = xmlSerializer.deserialize(data);
return deserialized;
}
/**
*
* @param datatypes
* @return
* @throws ImportException
*/
protected abstract List<ImportContextEntry> importAll(List<Datatype> datatypes) throws ImportException;
/**
*
* @param owner
* @throws ImportException
*/
protected abstract void deleteAll(Owner owner) throws ImportException;
/**
*
* @return
* @throws PersistenceException
*/
protected NabuccoDatatype create(NabuccoDatatype datatype) throws PersistenceException {
datatype.setDatatypeState(DatatypeState.INITIALIZED);
datatype.setId((Identifier) null);
return this.helper.persist(datatype);
}
/**
*
* @return
* @throws PersistenceException
*/
protected NabuccoDatatype modify(NabuccoDatatype datatype) throws PersistenceException {
datatype.setDatatypeState(DatatypeState.MODIFIED);
return this.helper.persist(datatype);
}
/**
*
* @return
* @throws PersistenceException
*/
protected void delete(NabuccoDatatype datatype) throws PersistenceException {
datatype.setDatatypeState(DatatypeState.DELETED);
this.helper.persist(datatype);
}
/**
*
* @return
*/
protected EntityManager getEntityManager() {
return this.em;
}
/**
*
* @return
*/
protected ImportContext getImportContext() {
return this.importContext;
}
/**
*
* @param entity
* @return
* @throws ImportException
*/
protected ImportContextEntry maintain(NabuccoDatatype entity)
throws ImportException {
ImportContextEntry result = new ImportContextEntry();
result.setOldId(entity.getId());
result.setTypeName(entity.getClass().getName());
try {
entity = create(entity);
} catch (PersistenceException ex) {
throw new ImportException("Unable to import "
+ entity.getClass().getSimpleName(), ex);
}
result.setNewId(entity.getId());
return result;
}
/**
*
* @param oldId
* @param className
* @return
*/
protected Long getNewRefId(Long oldId, String className) {
for (ImportContextEntry entry : this.importContext.getEntries()) {
if (entry.getTypeName().getValue().equals(className)
&& entry.getOldId().getValue().equals(oldId)) {
return entry.getNewId().getValue();
}
}
return null;
}
/**
*
* @param datatypes
* @return
*/
protected Owner getOwner() {
return this.getImportContext().getOwner();
}
}