angkatandao.java

sistem information for universitas

package dao;
import java.util.ArrayList;
import java.util.List;
import model.Angkatan;
import model.ObjectPaging;
import org.hibernate.Query;
import org.hibernate.Session;
public class AngkatanDAO {
    int angkatanPerPage=20;
    public AngkatanDAO() {
    }
    public boolean namaIsUsed(String name) throws Exception {
        HibernateUtil.beginTransaction();
        Session session=HibernateUtil.getSession();
        Angkatan angkatan=null;
        boolean isUsed=false;
        try {
            angkatan=(Angkatan)session.createQuery("SELECT angkatan FROM Angkatan angkatan WHERE angkatan.nama= :input")
            .setParameter("input",name).uniqueResult();
            if(angkatan!=null) {
                isUsed=true;
            }
        } catch(Exception ex) {
            throw ex;
        }
        return isUsed;
    }
    public Angkatan loadAngkatan(long id) throws Exception {
        HibernateUtil.beginTransaction();
        Session session=HibernateUtil.getSession();
        Angkatan angkatan=null;
        try {
            angkatan=(Angkatan)session.load(Angkatan.class,id);
        } catch(Exception ex) {
            throw ex;
        }
        return angkatan;
    }
    //=======NO PAGING=======
    public List getListAngkatan() throws Exception {
        HibernateUtil.beginTransaction();
        Session session=HibernateUtil.getSession();
        List list=new ArrayList();
        try {
            list=session.createQuery("FROM Angkatan").list();
        } catch(Exception ex) {
            throw ex;
        }
        return list;
    }
    //=======NO PAGING=======
    //=======PAGING=======
    public ObjectPaging getListAngkatan(int pageNumber) throws Exception {
        HibernateUtil.beginTransaction();
        ObjectPaging objectPaging=new ObjectPaging();
        int totalItem=getListAngkatan().size();
        int totalPage=totalItem/angkatanPerPage;
        if(totalItem%angkatanPerPage>0)totalPage++;
        if(pageNumber<1) {
            pageNumber=1;
        }
        if(pageNumber>totalPage) {
            pageNumber=totalPage;
        }
        Session session=HibernateUtil.getSession();
        List list=new ArrayList();
        try {
            Query query=session.createQuery("FROM Angkatan");
            list=query.setFirstResult(angkatanPerPage*(pageNumber-1))
            .setMaxResults(angkatanPerPage).list();
        } catch(Exception ex) {
            throw ex;
        }
        int beginPagePaging=pageNumber-5;
        int endedPagePaging=pageNumber+5;
        if(beginPagePaging<1) {
            beginPagePaging=1;
            endedPagePaging=11;
            if(endedPagePaging>totalPage) {
                endedPagePaging=totalPage;
            }
        } else if(endedPagePaging>totalPage) {
            endedPagePaging=totalPage;
            beginPagePaging=totalPage-10;
            if(beginPagePaging<1) {
                beginPagePaging=1;
            }
        }
        List listPaging=new ArrayList();
        for(int i=beginPagePaging;i<=endedPagePaging;i++) {
            listPaging.add(i);
        }
        objectPaging.setListObject(list);
        objectPaging.setListPaging(listPaging);
        objectPaging.setPageNumber(pageNumber);
        objectPaging.setTotalPage(totalPage);
        return objectPaging;
    }
    //=======PAGING=======
}