leaf.java

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package com.redmoon.forum.ui.menu;

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

import javax.servlet.http.*;

import cn.js.fan.base.*;
import cn.js.fan.cache.jcs.*;
import cn.js.fan.db.*;
import cn.js.fan.util.*;
import cn.js.fan.web.*;
import org.apache.log4j.*;

public class Leaf implements Serializable, ITagSupport {
    public static String CODE_ROOT = "root";

    final String tableName = "sq_forum_menu";
    String connname = "";

    transient RMCache rmCache = RMCache.getInstance();
    transient Logger logger = Logger.getLogger(Leaf.class.getName());

    public static final int TYPE_PRESET = 1;
    public static final int TYPE_LINK = 0;
    private String target;

    private String code = "", name = "", link = "", parent_code = "-1",
            root_code = "";
    java.util.Date add_date;
    private int orders = 1, layer = 1, child_count = 0, islocked = 0;
    final String LOAD = "select code,name,link,parent_code,root_code,orders,layer,child_count,add_date,islocked,type,isHome,pre_code,width,is_has_path,is_resource,target from " + tableName + " where code=?";
    boolean isHome = false;
    final String dirCache = "FORUM_MENU";

    public String get(String field) {
        if (field.equals("code"))
            return getCode();
        else if (field.equals("name"))
            return getName();
        else if (field.equals("desc"))
            return getLink();
        else if (field.equals("parent_code"))
            return getParentCode();
        else if (field.equals("root_code"))
            return getRootCode();
        else if (field.equals("layer"))
            return "" + getLayer();
        else
            return "";
    }

    public Leaf() {
        connname = Global.defaultDB;
        if (connname.equals(""))
            logger.info("Leaf:DB is empty!");
    }

    public Leaf(String code) {
        connname = Global.defaultDB;
        if (connname.equals(""))
            logger.info("Leaf:DB is empty!");
        this.code = code;
        loadFromDb();
    }

    public void renew() {
        if (logger == null) {
            logger = Logger.getLogger(Leaf.class.getName());
        }
        if (rmCache == null) {
            rmCache = RMCache.getInstance();
        }
    }

    public void loadFromDb() {
        ResultSet rs = null;
        Conn conn = new Conn(connname);
        try {
            PreparedStatement ps = conn.prepareStatement(LOAD);
            ps.setString(1, code);
            rs = conn.executePreQuery();
            if (rs != null && rs.next()) {
                this.code = rs.getString(1);
                name = rs.getString(2);
                link = rs.getString(3);
                parent_code = rs.getString(4);
                root_code = rs.getString(5);
                orders = rs.getInt(6);
                layer = rs.getInt(7);
                child_count = rs.getInt(8);
                try {
                    add_date = DateUtil.parse(rs.getString(9));
                }
                catch (Exception e) {

                }
                islocked = rs.getInt(10);
                type = rs.getInt(11);
                isHome = rs.getInt(12) > 0 ? true : false;
                preCode = StrUtil.getNullStr(rs.getString(13));
                width = rs.getInt(14);
                hasPath = rs.getInt(15)==1;
                resource = rs.getInt(16)==1;
                target = StrUtil.getNullStr(rs.getString(17));
                loaded = true;
            }
        } catch (SQLException e) {
            logger.error("loadFromDb: " + e.getMessage());
        } finally {
            if (conn != null) {
                conn.close();
                conn = null;
            }
        }
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getName() {
        return name;
    }

    public void setRootCode(String c) {
        this.root_code = c;
    }

    public void setType(int t) {
        this.type = t;
    }

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

    public void setLink(String link) {
        this.link = link;
    }

    public int getOrders() {
        return orders;
    }

    public boolean getIsHome() {
        return isHome;
    }

    public void setParentCode(String p) {
        this.parent_code = p;
    }

    public String getParentCode() {
        return this.parent_code;
    }

    public void setIsHome(boolean b) {
        this.isHome = b;
    }

    public String getRootCode() {
        return root_code;
    }

    public int getLayer() {
        return layer;
    }

    public void setLayer(int layer) {
        this.layer = layer;
    }

    public String getLink() {
        return link;
    }

    public int getType() {
        return type;
    }

    public boolean isLoaded() {
        return loaded;
    }

    public String getPreCode() {
        return preCode;
    }

    public int getWidth() {
        return width;
    }

    public boolean isHasPath() {
        return hasPath;
    }

    public boolean isResource() {
        return resource;
    }

    public String getTarget() {
        return target;
    }

    public int getChildCount() {
        return child_count;
    }

    public Vector getChildren() {
        Vector v = new Vector();
        String sql = "select code from " + tableName + " where parent_code=? order by orders asc";
        Conn conn = new Conn(connname);
        ResultSet rs = null;
        try {
            PreparedStatement pstmt = conn.prepareStatement(sql);
            pstmt.setString(1, code);
            rs = conn.executePreQuery();
            if (rs != null) {
                while (rs.next()) {
                    String c = rs.getString(1);
                    
                    v.addElement(getLeaf(c));
                }
            }
        } catch (SQLException e) {
            logger.error("getChildren: " + e.getMessage());
        } finally {
            if (conn != null) {
                conn.close();
                conn = null;
            }
        }
        return v;
    }

    
    public Vector getAllChild(Vector vt, Leaf leaf) throws ErrMsgException {
        Vector children = leaf.getChildren();
        if (children.isEmpty())
            return children;
        vt.addAll(children);
        Iterator ir = children.iterator();
        while (ir.hasNext()) {
            Leaf lf = (Leaf) ir.next();
            getAllChild(vt, lf);
        }
        
        return vt;
    }

    public String toString() {
        return "Leaf is " + name;
    }

    private int type;

    public synchronized boolean update() {
        String sql = "update " + tableName + " set name=" + StrUtil.sqlstr(name) +
                     ",link=" + StrUtil.sqlstr(link) +
                     ",type=" + type + ",isHome=" + (isHome ? "1" : "0") +
                     ",orders=" + orders + ",layer=" + layer + ",child_count=" + child_count + ",pre_code=" + StrUtil.sqlstr(preCode) + ",width=" + width +
                     ",is_has_path=" + (hasPath?1:0) + ",is_resource=" + (resource?1:0) + ",target=" + StrUtil.sqlstr(target) + " where code=" + StrUtil.sqlstr(code);
        
        RMConn conn = new RMConn(connname);
        int r = 0;
        try {
            r = conn.executeUpdate(sql);
            try {
                if (r == 1) {
                    removeFromCache(code);
                    
                    
                    LeafChildrenCacheMgr.remove(parent_code);
                }
            } catch (Exception e) {
                logger.error("update: " + e.getMessage());
            }
        } catch (SQLException e) {
            logger.error("update: " + e.getMessage());
        }
        boolean re = r == 1 ? true : false;
        if (re) {
            removeFromCache(code);
        }
        return re;
    }

    
    public synchronized boolean update(String newParentCode) throws ErrMsgException {
        if (newParentCode.equals(parent_code))
            return false;
        if (newParentCode.equals(code))
            throw new ErrMsgException("Node's parent can not be self！");
        
        Leaf lfparent = getLeaf(newParentCode);
        int oldorders = orders;
        int neworders = lfparent.getChildCount() + 1;
        int parentLayer = lfparent.getLayer();
        String sql = "update " + tableName + " set name=" + StrUtil.sqlstr(name) +
                     ",link=" + StrUtil.sqlstr(link) +
                     ",type=" + type + ",isHome=" + (isHome ? "1" : "0") +
                     ",parent_code=" + StrUtil.sqlstr(newParentCode) + ",orders=" + neworders +
                     ",layer=" + (parentLayer+1) + ",pre_code=" + StrUtil.sqlstr(preCode) + ",width=" + width + ",target=" + StrUtil.sqlstr(target) +
                     " where code=" + StrUtil.sqlstr(code);

        String oldParentCode = parent_code;
        parent_code = newParentCode;
        RMConn conn = new RMConn(connname);

        int r = 0;
        try {