package electric.dbs; import electric.dbs.Dbware; import electric.dbs.ware; import java.util.Collection; import java.util.ArrayList; import java.sql.SQLException; import java.sql.ResultSet; import java.util.Iterator; import java.sql.*; import javax.servlet.http.*; import electric.electricUtils.*; /** *
Title:
*Description:
*Copyright: Copyright (c) 2005
*Company:
* @author not attributable * @version 1.0 */ public class waredb { public waredb() { } public int selectsql(int st) { String countSql="SELECT COUNT(*) FROM WARE WHERE STATUS<>1"; Connection co=null; ResultSet r = null; PreparedStatement pstm = null; int size=0; int sizepa=0; try { co = DbConnectionManager.getConnection(); pstm = co.prepareStatement(countSql); r = pstm.executeQuery(); while (r.next()) { size = r.getInt(1); sizepa=(int)size/st; if(size%st>0) { sizepa=sizepa+1; } } r.close(); r=null; pstm.close(); pstm=null; co.close(); co=null; } catch (SQLException sqle) { System.err.println(sqle.getMessage()+"333"); } return sizepa; } public Collection select(int step, int page) { Collection coll = new ArrayList(); Connection con=null; ResultSet rs=null; PreparedStatement pstmt=null; int tip = step * (page - 1); try { String sql="SELECT * FROM [WARE] WHERE STATUS<>1"; con = DbConnectionManager.getConnection(); pstmt = con.prepareStatement(sql, ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY); rs = pstmt.executeQuery(); System.out.print(tip); if (tip <= 0) { rs.beforeFirst(); } else { if (!rs.absolute(tip)) { rs.beforeFirst(); } } for (int i = 1; rs.next() && i <= step; i++) { ware ware = new ware(); ware.setId(rs.getInt(1)); ware.setPname(rs.getString(2)); ware.setPmodel(rs.getString(3)); ware.setPcost(rs.getString(4)); ware.setPheft(rs.getString(5)); ware.setPfacturer(rs.getString(6)); ware.setPnote(rs.getString(7)); ware.setCreateDate(rs.getString(8)); ware.setStatus(rs.getInt(9)); coll.add(ware); } rs.close(); rs=null; pstmt.close(); pstmt=null; con.close(); con=null; } catch (SQLException ex) { System.out.println(ex.getMessage()+"666"); } finally { return coll; } } }