companyactivitiesservice.java

来自「Struts2 + Spring JPA Hibernate demo.」· Java 代码 · 共 115 行

package com.vegeta.service.company.activity;

import java.util.Date;
import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;
import javax.persistence.Query;

import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.springframework.transaction.annotation.Transactional;

import com.vegeta.model.company.activity.CompanyActivities;

@Transactional
public class CompanyActivitiesService implements ICompanyActivitiesService {
	protected Logger log = LogManager.getLogger(this.getClass().getName());

	private EntityManagerFactory emf;

	public CompanyActivitiesService() {
		emf = Persistence.createEntityManagerFactory("vegetaPU");
	}

	@SuppressWarnings("unchecked")
	public List<CompanyActivities> findAll() {
		log.debug("in the CompanyActivitiesService findAll() method");
		EntityManager entityMgr = emf.createEntityManager();
		Query query = entityMgr.createQuery("from CompanyActivities");
		return query.getResultList();
	}

	public CompanyActivities find(Integer id) {
		log.debug("in the CompanyActivitiesService find() method");
		EntityManager entityMgr = emf.createEntityManager();
		return entityMgr.find(CompanyActivities.class, id);
	}

	public boolean create(CompanyActivities companyActivities) {
		log.debug("in the CompanyActivitiesService create() method");
		boolean result = false;
		EntityManager entityMgr = emf.createEntityManager();
		EntityTransaction tx = null;
		try {
			tx = entityMgr.getTransaction();
			tx.begin();
			companyActivities.setCreateddate(new Date());
			entityMgr.persist(companyActivities);
			tx.commit();
			result = true;
		} catch (Exception e) {
			if (tx != null && tx.isActive())
				tx.rollback();
		}
		return result;
	}

	public boolean remove(Integer id) {
		log.debug("in the CompanyActivitiesService remove() method");
		boolean result = false;
		EntityManager entityMgr = emf.createEntityManager();
		EntityTransaction tx = null;

		try {
			tx = entityMgr.getTransaction();
			tx.begin();
			CompanyActivities company = (CompanyActivities) entityMgr.find(CompanyActivities.class, id);
			entityMgr.remove(company);
			tx.commit();
			result = true;
		} catch (Exception e) {
			if (tx != null && tx.isActive())
				tx.rollback();
			e.printStackTrace();
		}
		return result;

	}

	public boolean update(CompanyActivities companyActivities) {
		log.debug("in the CompanyActivitiesService update() method");
		boolean result = false;
		EntityManager entityMgr = emf.createEntityManager();
		EntityTransaction tx = null;
		try {
			tx = entityMgr.getTransaction();
			tx.begin();
			companyActivities.setChangeddate(new Date());
			entityMgr.merge(companyActivities);
			tx.commit();
			result = true;
		} catch (Exception e) {
			if (tx != null && tx.isActive())
				tx.rollback();
		}
		return result;

	}

	public boolean save(CompanyActivities companyActivities) {
		boolean isCreated = false;
		boolean isUpdated = false;
		if (companyActivities.getActivityid() == null) {
			isCreated = create(companyActivities);
		} else {
			isUpdated = update(companyActivities);
		}
		return isCreated && isUpdated;
	}

}