/*
* Copyright 2011-2014 Conventions Framework.
*
* 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.conventionsframework.query;
import org.conventionsframework.model.BaseEntity;
import org.conventionsframework.qualifier.Query;
import org.conventionsframework.qualifier.QueryParam;
import org.conventionsframework.qualifier.QueryParams;
import org.conventionsframework.qualifier.Service;
import org.conventionsframework.service.BaseService;
import org.conventionsframework.util.BeanManagerController;
import javax.enterprise.inject.Instance;
import javax.inject.Inject;
import javax.interceptor.AroundInvoke;
import javax.interceptor.Interceptor;
import javax.interceptor.InvocationContext;
import javax.persistence.EntityManager;
import java.io.Serializable;
/**
*
* @author Rafaem M. Pestano - Sep 8, 2012 5:35:00 PM
*/
@Query(service = BaseService.class)
@Interceptor
public class QueryProvider<T extends BaseEntity> implements Serializable{
@AroundInvoke
public Object execute(InvocationContext ic) throws Exception{
BaseService service = null;
Query query = ic.getMethod().getAnnotation(Query.class);
Class<? extends BaseService> serviceClass = query.service();
if(!serviceClass.equals(BaseService.class)){
service = (BaseService) BeanManagerController.getBeanByType(serviceClass);
}
javax.persistence.Query q = null;
if(!"".equals(query.sql())){
q = service.crud().getEntityManager().createQuery(query.sql());
}
else if(!"".equals(query.namedQuery())){
q = service.crud().getEntityManager().createNamedQuery(query.namedQuery());
}
QueryParams params = ic.getMethod().getAnnotation(QueryParams.class);
if(params != null){
for (QueryParam queryParam : params.value()) {
this.addParam(queryParam, q);
}
}
QueryParam param = ic.getMethod().getAnnotation(QueryParam.class);
if(param != null){
this.addParam(param, q);
}
if(q != null){
return q.getResultList();
}
else {
return q;
}
}
private void addParam(QueryParam param, javax.persistence.Query q){
if(!"".equals(param.value())){
q.setParameter(param.name(), param.value());
}
if(param.intValue() != -9999){
q.setParameter(param.name(), param.intValue());
}
}
}