CollegeDAOHibImpl.java

Source Code‎ > ‎src‎ > ‎in.co.sunrays.proj1‎ > ‎dao‎ > ‎

package in.co.sunrays.proj1.dao;

import in.co.sunrays.proj1.dto.CollegeDTO;
import in.co.sunrays.proj1.exception.DatabaseException;

import java.util.List;

import org.apache.log4j.Logger;
import org.hibernate.HibernateException;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Restrictions;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

/**
* Hibernate Implementation of CollegeDAO
*
* @author SUNRAYS Technologies
* @version 1.0
* @Copyright (c) SUNRAYS Technologies
*/
public class CollegeDAOHibImpl extends HibernateDaoSupport implements
        CollegeDAOInt {

    /**
    * Logger
    */
    private static Logger log = Logger.getLogger(CollegeDAOHibImpl.class);

    /**
    * Add a College
    *
    * @param dto
    * @throws DatabaseException
    */
    public long add(CollegeDTO dto) throws DatabaseException {
        log.debug("DAO add Started");
        long pk = 0;
        try {
            pk = (Long) getHibernateTemplate().save(dto);
        } catch (HibernateException e) {
            log.error("Database Exception..", e);
            throw new DatabaseException("Exception in College add");
        }
        log.debug("DAO add End");
        return pk;
    }

    /**
    * Update a College
    *
    * @param dto
    * @throws DatabaseException
    */
    @Override
    public void update(CollegeDTO dto) throws DatabaseException {
        log.debug("DAO update Started");
        try {
            getHibernateTemplate().update(dto);
        } catch (HibernateException e) {
            log.error("Database Exception..", e);
            throw new DatabaseException("Exception in College Update");
        }
        log.debug("DAO update End");
    }

    /**
    * Delete a College
    *
    * @param dto
    * @throws DatabaseException
    */
    @Override
    public void delete(CollegeDTO dto) throws DatabaseException {
        log.debug("DAO delete Started");
        try {
            getHibernateTemplate().delete(dto);
        } catch (HibernateException e) {
            log.error("Database Exception..", e);
            throw new DatabaseException("Exception in College delete");
        }
        log.debug("DAO delete End");
    }

    /**
    * Find College by Name
    *
    * @param name
    *            : get parameter
    * @return dto
    * @throws DatabaseException
    */
    @Override
    public CollegeDTO findByName(String name) throws DatabaseException {
        log.debug("DAO findByName Started");
        CollegeDTO dto = null;
        try {
            DetachedCriteria criteria = DetachedCriteria
                    .forClass(CollegeDTO.class);
            criteria.add(Restrictions.eq("name", name));
            List list = getHibernateTemplate().findByCriteria(criteria);
            if (list.size() == 1) {
                dto = (CollegeDTO) list.get(0);
            }
        } catch (HibernateException e) {
            log.error("Database Exception..", e);
            throw new DatabaseException("Exception in getting User by Login");
        }
        log.debug("DAO findByName End");
        return dto;
    }

    /**
    * Find College by PK
    *
    * @param pk
    *            : get parameter
    * @return dto
    * @throws DatabaseException
    */
    @Override
    public CollegeDTO findByPK(long pk) throws DatabaseException {
        log.debug("DAO findByPK Started");
        CollegeDTO dto = null;
        try {
            dto = (CollegeDTO) getHibernateTemplate().get(CollegeDTO.class, pk);
        } catch (HibernateException e) {
            log.error("Database Exception..", e);
            throw new DatabaseException(
                    "Exception : Exception in getting College by pk");
        }
        log.debug("DAO findByPK End");
        return dto;
    }

    /**
    * Search Colleges with pagination
    *
    * @return list : List of Colleges
    * @param dto
    *            : Search Parameters
    * @param pageNo
    *            : Current Page No.
    * @param pageSize
    *            : Size of Page
    *
    * @throws DatabaseException
    */
    @Override
    public List search(CollegeDTO dto, int pageNo, int pageSize)
            throws DatabaseException {
        log.debug("DAO search Started");
        List list = null;
        try {
            DetachedCriteria criteria = DetachedCriteria
                    .forClass(CollegeDTO.class);
            if (dto.getId() > 0) {
                criteria.add(Restrictions.eq("id", dto.getId()));
            }
            if (dto.getName() != null && dto.getName().length() > 0) {
                criteria.add(Restrictions.like("name", dto.getName() + "%"));
            }
            if (dto.getAddress() != null && dto.getAddress().length() > 0) {
                criteria.add(Restrictions.like("address", dto.getAddress()
                        + "%"));
            }
            if (dto.getState() != null && dto.getState().length() > 0) {
                criteria.add(Restrictions.like("state", dto.getState() + "%"));
            }
            if (dto.getCity() != null && dto.getCity().length() > 0) {
                criteria.add(Restrictions.like("city", dto.getCity() + "%"));
            }
            // if page size is greater than zero the apply pagination
            if (pageSize > 0) {
                list = getHibernateTemplate().findByCriteria(criteria,
                        ((pageNo - 1) * pageSize), pageSize);
            } else {
                list = getHibernateTemplate().findByCriteria(criteria);
            }
        } catch (HibernateException e) {
            log.error("Database Exception..", e);
            throw new DatabaseException("Exception in college search");
        }
        log.debug("DAO search End");
        return list;
    }

    /**
    * Search Colleges
    *
    * @return list : List of Colleges
    * @param dto
    *            : Search Parameters
    * @throws DatabaseException
    */
    @Override
    public List search(CollegeDTO dto) throws DatabaseException {
        return search(dto, 0, 0);
    }

    /**
    * Get List of Colleges
    *
    * @return list : List of College
    * @throws DatabaseException
    */
    public List list() throws DatabaseException {
        return list(0, 0);
    }

    /**
    * Get List of Colleges with pagination
    *
    * @return list : List of College
    * @param pageNo
    *            : Current Page No.
    * @param pageSize
    *            : Size of Page
    * @throws DatabaseException
    */
    public List list(int pageNo, int pageSize) throws DatabaseException {
        log.debug("DAO list Started");
        List list = null;
        try {
            DetachedCriteria criteria = DetachedCriteria
                    .forClass(CollegeDTO.class);
            // if page size is greater than zero then apply pagination
            if (pageSize > 0) {
                list = getHibernateTemplate().findByCriteria(criteria,
                        ((pageNo - 1) * pageSize), pageSize);
            } else {
                list = getHibernateTemplate().findByCriteria(criteria);
            }
        } catch (HibernateException e) {
            log.error("Database Exception..", e);
            throw new DatabaseException(
                    "Exception : Exception in marksheet list");
        }
        log.debug("DAO list End");
        return list;
    }

}

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