sql operator
package com.lovo.cq.shopping10_1.daoimpl;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.text.DateFormat;
import java.util.Date;
import com.lovo.cq.shopping10_1.common.DbUtil;
import com.lovo.cq.shopping10_1.dao.AdminInformDao;
import com.lovo.cq.shopping10_1.po.Inform;
import com.lovo.cq.shopping10_1.po.InformPager;
import com.lovo.cq.shopping10_1.po.User;
import com.lovo.cq.shopping10_1.po.UserPager;
import com.sun.org.apache.xerces.internal.impl.dv.xs.YearDV;
public class AdminInformDaoImpl implements AdminInformDao {
public boolean addInform(Inform inform) {
Connection dbConnection=null;
DbUtil dao = null;
PreparedStatement ps = null;
String sql = "";
Date date = new Date();
DateFormat df = DateFormat.getDateInstance();
try {
dao = new DbUtil();
sql = "insert into tb_inform values(?,?,'"+df.format(date)+"')";
ps = dao.getCon().prepareStatement(sql);
ps.setString(1, inform.getInformTitle());
ps.setString(2, inform.getInformContent());
int i = ps.executeUpdate();
if(i != 0) {
return true;
}
} catch(Exception e) {
e.printStackTrace();
} finally {
try {
ps.close();
dao.close(dbConnection);
} catch(SQLException s) {
s.printStackTrace();
}
}
return false;
}
public List getAllInform() {
Connection dbConnection=null;
List informList = new ArrayList();
DbUtil dao = null;
PreparedStatement ps = null;
ResultSet rs = null;
try {
dao = new DbUtil();
String sql = "select * from tb_inform";
ps = dao.getCon().prepareStatement(sql);
rs = ps.executeQuery();
while(rs.next()) {
Inform inform = new Inform();
inform.setInformId(rs.getInt("informId"));
inform.setInformTitle(rs.getString("informTitle"));
inform.setInformContent(rs.getString("informContent"));
inform.setInformTime(rs.getString("informTime"));
informList.add(inform);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
rs.close();
ps.close();
dao.close(dbConnection);
} catch (Exception e) {
e.printStackTrace();
}
}
return informList;
}
public boolean deleteInform(int[] ids) {
Connection dbConnection=null;
DbUtil daoUtil = null;
PreparedStatement ps = null;
Connection conn = null;
String sql = "delete from tb_inform where informId=?";
try {
daoUtil = new DbUtil();
conn = daoUtil.getCon();
conn.setAutoCommit(false);
ps = conn.prepareStatement(sql);
for(int j=0;j<ids.length;j++) {
ps.setInt(1, ids[j]);
ps.addBatch();
}
int[] k = ps.executeBatch();
conn.commit();
if(k.length == ids.length) {
return true;
}
} catch (Exception e) {
try {
conn.rollback();
} catch (Exception ex) {
ex.printStackTrace();
}
} finally {
try {
ps.close();
daoUtil.close(dbConnection);
} catch (SQLException e) {
e.printStackTrace();
}
}
return false;
}
public Inform getOneInform(int id) {
Connection dbConnection=null;
Inform inform = null;
DbUtil dao = null;
PreparedStatement ps = null;
ResultSet rs = null;
try {
dao = new DbUtil();
String sql = "select * from tb_inform where informId = ?";
ps = dao.getCon().prepareStatement(sql);
ps.setInt(1, id);
rs = ps.executeQuery();
if (rs.next()) {
inform.setInformId(rs.getInt("informId"));
inform.setInformTitle(rs.getString("informTitle"));
inform.setInformContent(rs.getString("informContent"));
inform.setInformTime(rs.getString("informTime"));
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
rs.close();
ps.close();
dao.close(dbConnection);
} catch (Exception e) {
e.printStackTrace();
}
}
return inform;
}
public InformPager getInformPager(int index, int pageSize) {
Connection dbConnection=null;
Map informMap = new HashMap();
DbUtil db = null;
PreparedStatement ps = null;
ResultSet rs = null;
try {
db = new DbUtil();
String sql ="select * from (select row_number() over( order by informId) as RowNumber,* from tb_inform) " +
"as tb_inform where RowNumber between ? and ?";
ps = db.getCon().prepareStatement(sql);
ps.setInt(1, index);
ps.setInt(2, pageSize);
rs = ps.executeQuery();
while(rs.next()) {
Inform inform = new Inform();
inform.setInformId(rs.getInt("informId"));
inform.setInformTitle(rs.getString("informTitle"));
inform.setInformContent(rs.getString("informContent"));
inform.setInformTime(rs.getString("informTime"));
informMap.put(inform.getInformId(), inform);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
rs.close();
ps.close();
db.close(dbConnection);
} catch (Exception e) {
e.printStackTrace();
}
}
InformPager ip = new InformPager();
ip.setImformMap(informMap);
ip.setPageSize(pageSize);
ip.setTotalNum(getAllInform().size());
return ip;
}
}