org.bonitasoft.engine.business.data.BusinessDataRetriever Maven / Gradle / Ivy
/**
* Copyright (C) 2019 Bonitasoft S.A.
* Bonitasoft, 32 rue Gustave Eiffel - 38000 Grenoble
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation
* version 2.1 of the License.
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
* Floor, Boston, MA 02110-1301, USA.
**/
package org.bonitasoft.engine.business.data;
import java.util.ArrayList;
import java.util.List;
import org.bonitasoft.engine.bdm.Entity;
import org.bonitasoft.engine.business.data.proxy.ServerProxyfier;
import org.bonitasoft.engine.core.process.instance.model.business.data.SProcessMultiRefBusinessDataInstance;
import org.bonitasoft.engine.core.process.instance.model.business.data.SRefBusinessDataInstance;
import org.bonitasoft.engine.core.process.instance.model.business.data.SSimpleRefBusinessDataInstance;
import org.bonitasoft.engine.expression.exception.SExpressionEvaluationException;
/**
* @author Elias Ricken de Medeiros
*/
public class BusinessDataRetriever {
private final BusinessDataRepository businessDataRepository;
private final ServerProxyfier proxyfier;
public BusinessDataRetriever(BusinessDataRepository businessDataRepository, ServerProxyfier proxyfier) {
this.businessDataRepository = businessDataRepository;
this.proxyfier = proxyfier;
}
/**
* Retrieves the Business Data related to the given {@link SSimpleRefBusinessDataInstance}. If the
* {@code SSimpleRefBusinessDataInstance} does not
* references any Business Data the result will be null.
*
* @param dataRef the business data reference
* @param bizClass the business data class
* @return the Business Data related to the given {@code SSimpleRefBusinessDataInstance} or null if no Business Data
* is referenced.
* @throws SBusinessDataNotFoundException when no Business Data is found for the given id
*/
public Entity getSimpleBusinessData(SSimpleRefBusinessDataInstance dataRef, Class bizClass)
throws SBusinessDataNotFoundException {
if (dataRef.getDataId() == null) {
return null;
}
final Entity entity = businessDataRepository.findById(bizClass, dataRef.getDataId());
return proxyfier.proxify(entity);
}
/**
* Retrieves the list of Business Data related to the given {@link SProcessMultiRefBusinessDataInstance}. If the
* {@code SMultiRefBusinessDataInstance} does not
* references any Business Data the result will em empty list.
*
* @param dataRef the multi business data reference
* @param bizClass the business data class
* @return the list of Business Data related to the given {@code SMultiRefBusinessDataInstance} or empty list if no
* Business Data is referenced.
*/
public List getMultiBusinessData(SProcessMultiRefBusinessDataInstance dataRef,
Class bizClass) {
if (dataRef.getDataIds() == null || dataRef.getDataIds().isEmpty()) {
return new ArrayList<>();
}
final List entities = businessDataRepository.findByIds(bizClass, dataRef.getDataIds());
final List e = new ArrayList<>();
for (final Entity entity : entities) {
e.add(proxyfier.proxify(entity));
}
return e;
}
/**
* Retrieves a Business Data or a List of Business Data related to the given {@link SRefBusinessDataInstance}
* depending on its type (single {@link Entity}
* if it's a {@link SSimpleRefBusinessDataInstance} or a List if it's a
* {@link SProcessMultiRefBusinessDataInstance}.
* This method will use {@link #getSimpleBusinessData(SSimpleRefBusinessDataInstance, Class)} or
* {@link #getMultiBusinessData(SProcessMultiRefBusinessDataInstance, Class)} based on the data reference type
*
* @param refBusinessDataInstance the business data reference
* @return The {@code Entity} or {@code List} if the business data reference is a
* {@code SSimpleRefBusinessDataInstance} or a
* {@code SMultiRefBusinessDataInstance} respectively
* @throws SBusinessDataNotFoundException
* @throws SExpressionEvaluationException
*/
public Object getBusinessData(final SRefBusinessDataInstance refBusinessDataInstance)
throws SBusinessDataNotFoundException, SExpressionEvaluationException {
try {
final Class bizClass = (Class) Thread.currentThread().getContextClassLoader()
.loadClass(refBusinessDataInstance.getDataClassName());
if (refBusinessDataInstance instanceof SSimpleRefBusinessDataInstance) {
return getSimpleBusinessData((SSimpleRefBusinessDataInstance) refBusinessDataInstance, bizClass);
}
final SProcessMultiRefBusinessDataInstance reference = (SProcessMultiRefBusinessDataInstance) refBusinessDataInstance;
return getMultiBusinessData(reference, bizClass);
} catch (final ClassNotFoundException e) {
throw new SExpressionEvaluationException(
"Unable to load class for the business data having reference '" + refBusinessDataInstance.getName()
+ "'",
e, refBusinessDataInstance.getName());
}
}
}