package com.jpcf.db.helper;

import java.math.*;

public class Pager {
private int totalRows; //總行數(shù)
private int pageSize = 10; //每頁顯示的行數(shù)
private int currentPage; //當(dāng)前頁號
private int totalPages; //總頁數(shù)
private int startRow; //當(dāng)前頁在數(shù)據(jù)庫中的起始行

public Pager() {
}

public Pager(int _totalRows) {
totalRows = _totalRows;
totalPages=totalRows/pageSize;
int mod=totalRows%pageSize;
if(mod>0){
totalPages++;
}
currentPage = 1;
startRow = 0;
}

public int getStartRow() {
return startRow;
}

public int getTotalPages() {
return totalPages;
}

public int getCurrentPage() {
return currentPage;
}

public int getPageSize() {
return pageSize;
}

public void setTotalRows(int totalRows) {
this.totalRows = totalRows;
}

public void setStartRow(int startRow) {
this.startRow = startRow;
}

public void setTotalPages(int totalPages) {
this.totalPages = totalPages;
}

public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}

public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}

public int getTotalRows() {
return totalRows;
}

public void first() {
currentPage = 1;
startRow = 0;
}

public void previous() {
if (currentPage == 1) {
return;
}
currentPage--;
startRow = (currentPage - 1) * pageSize;
}

public void next() {
if (currentPage < totalPages) {
currentPage++;
}
startRow = (currentPage - 1) * pageSize;
}

public void last() {
currentPage = totalPages;
startRow = (currentPage - 1) * pageSize;
}

public void refresh(int _currentPage) {
currentPage = _currentPage;
if (currentPage > totalPages) {
last();
}
}}

   package com.jpcf.db.dao;

import com.jpcf.db.model.*;
import com.jpcf.db.helper.HibernateUtil;
import net.sf.hibernate.*;
import java.util.*;
import com.jpcf.db.controller.*;

public class VehiclePropertyDAO {

public Collection findWithPage(int pageSize, int startRow) throws
HibernateException {
Collection vehicleList = null;
Transaction tx = null;
try {
Session session = HibernateUtil.currentSession();
tx = session.beginTransaction();
Query q = session.createQuery("from VehicleProperty vp");
q.setFirstResult(startRow);
q.setMaxResults(pageSize);
vehicleList = q.list();
tx.commit();
} catch (HibernateException he) {
if (tx != null) {
tx.rollback();
}
throw he;
} finally {
HibernateUtil.closeSession();
}
return vehicleList;
}

public int getRows(String query) throws
HibernateException {
int totalRows = 0;
Transaction tx = null;
try {
Session session = HibernateUtil.currentSession();
tx = session.beginTransaction();
totalRows = ((Integer) session.iterate(query).next()).
intValue();
tx.commit();
} catch (HibernateException he) {
if (tx != null) {
tx.rollback();
}
throw he;
} finally {
HibernateUtil.closeSession();
}

return totalRows;
}

}