booktypedb.java

oa 源码

package com.redmoon.oa.book;

import java.sql.*;
import java.util.*;

import cn.js.fan.base.*;
import cn.js.fan.db.*;
import cn.js.fan.util.*;


public class BookTypeDb extends ObjectDb {
    private int id;

    public static final int TYPE_SYSTEM = 1;
    public static final int TYPE_USER = 0;

    public BookTypeDb() {
        init();
    }

    public BookTypeDb(int id) {
        this.id = id;
        init();
        load();
    }

    public int getId() {
        return id;
    }

    public void initDB() {
        tableName = "book_type";
        primaryKey = new PrimaryKey("id", PrimaryKey.TYPE_INT);
        objectCache = new BookTypeCache(this);
        isInitFromConfigDB = false;

        QUERY_CREATE =
                "insert into " + tableName + " (name) values (?)";
        QUERY_SAVE = "update " + tableName + " set name=? where id=?";
        QUERY_LIST =
                "select id from " + tableName;
        QUERY_DEL = "delete from " + tableName + " where id=?";
        QUERY_LOAD = "select name from " + tableName + " where id=?";
    }

    public BookTypeDb getBookTypeDb(int id) {
        return (BookTypeDb)getObjectDb(new Integer(id));
    }

    public boolean create() throws ErrMsgException {
        Conn conn = new Conn(connname);
        boolean re = false;
        try {
            PreparedStatement ps = conn.prepareStatement(QUERY_CREATE);
            ps.setString(1, name);
            re = conn.executePreUpdate()==1?true:false;
            if (re) {
                BookTypeCache rc = new BookTypeCache(this);
                rc.refreshCreate();
            }
        }
        catch (SQLException e) {
            logger.error("create:" + e.getMessage());
            throw new ErrMsgException("数据库操作失败！");
        }
        finally {
            if (conn!=null) {
                conn.close();
                conn = null;
            }
        }
        return re;
    }

    
    public boolean del() throws ErrMsgException {
        Conn conn = new Conn(connname);
        boolean re = false;
        try {
            PreparedStatement ps = conn.prepareStatement(QUERY_DEL);
            ps.setInt(1, id);
            re = conn.executePreUpdate() == 1 ? true : false;
            if (re) {
                BookTypeCache rc = new BookTypeCache(this);
                primaryKey.setValue(new Integer(id));
                rc.refreshDel(primaryKey);
            }
        } catch (SQLException e) {
            logger.error("del: " + e.getMessage());
        } finally {
            if (conn != null) {
                conn.close();
                conn = null;
            }
        }
        return re;
    }

    
    public ObjectDb getObjectRaw(PrimaryKey pk) {
        return new BookTypeDb(pk.getIntValue());
    }

    
    public void load() {
        ResultSet rs = null;
        Conn conn = new Conn(connname);
        try {
        
            PreparedStatement ps = conn.prepareStatement(QUERY_LOAD);
            ps.setInt(1, id);
            rs = conn.executePreQuery();
            if (rs != null && rs.next()) {
                name = rs.getString(1);
                loaded = true;
                primaryKey.setValue(new Integer(id));
            }
        } catch (SQLException e) {
            logger.error("load: " + e.getMessage());
        } finally {
            if (rs != null) {
                try {
                    rs.close();
                } catch (SQLException e) {}
                rs = null;
            }
            if (conn!=null) {
                conn.close();
                conn = null;
            }
        }
    }

    
    public boolean save() throws ErrMsgException {
        Conn conn = new Conn(connname);
         boolean re = false;
         try {
             PreparedStatement ps = conn.prepareStatement(QUERY_SAVE);
             ps.setString(1, name);
             ps.setInt(2, id);
             re = conn.executePreUpdate()==1?true:false;
             if (re) {
                 BookTypeCache rc = new BookTypeCache(this);
                 primaryKey.setValue(new Integer(id));
                 rc.refreshSave(primaryKey);
             }
         } catch (SQLException e) {
             logger.error("save: " + e.getMessage());
         } finally {
             if (conn != null) {
                 conn.close();
                 conn = null;
             }
         }
        return re;
    }
    public boolean isExist(String tableName){
         ResultSet rs = null;
         Conn conn = new Conn(connname);
         try {
             rs = conn.executeQuery("select id from book_type where name='"+tableName+"'" );
             if(rs.next()) return true;
         } catch (SQLException e) {
             logger.error("list:" + e.getMessage());
         } finally {
             if (conn != null) {
                 conn.close();
                 conn = null;
             }
         }
         return false ;
     }



    
    public Vector list(String sql) {
        ResultSet rs = null;
        Conn conn = new Conn(connname);
        Vector result = new Vector();
        try {
            rs = conn.executeQuery(sql);
            if (rs == null) {
                return null;
            } else {
                while (rs.next()) {
                    result.addElement(getBookTypeDb(rs.getInt(1)));
                }
            }
        } catch (SQLException e) {
            logger.error("list:" + e.getMessage());
        } finally {
            if (conn != null) {
                conn.close();
                conn = null;
            }
        }
        return result;
    }


    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }


    private String name;


}