561 lines
15 KiB
PHP
561 lines
15 KiB
PHP
<?php
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/**
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* ArchiveCategroy - 文档分类类
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*/
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class ArchiveCategory
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{
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//PDO对象
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private $db;
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//数据库中分类表
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public $CategoryTable;
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//分类左值字段名称
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private $fld_left;
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//分类右值字段名称
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private $fld_right;
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//顶级栏目标记字段
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private $fld_tid;
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//输出栏目中的深度信息
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public $DeepTitle;
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//数据新闻栏目标识
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public $DataNewsCode;
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function __construct($db){
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$this->db = $db;
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$this->CategoryTable = "ar_category";
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$this->fld_left = "lft";
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$this->fld_right = "rgt";
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$this->fld_tid = "tid";
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$this->DeepTitle = "ROOTDEEP";
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$this->DataNewsCode = "datanews";
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}
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function GetFullCategory()
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{
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return $this->GetCategory(0,'');
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}
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/**
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* GetTree() 获得栏目树
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* 用来获得某个栏目下或者所有栏目的树结构
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*
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* 典型表结构
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* (PostgreSql)
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*
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CREATE TABLE ar_category
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(
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id serial NOT NULL,
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title character varying(80),
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tid integer NOT NULL DEFAULT 0,
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lft integer NOT NULL DEFAULT 0,
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rgt integer NOT NULL DEFAULT 0,
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CONSTRAINT ar_category_pkey PRIMARY KEY (id)
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)
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*
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* @param int $tid
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*
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* @return array;
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*/
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function GetCategory($tid=0,$ptype='news'){
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$left = $this->fld_left;
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$right = $this->fld_right;
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$categoryTable = $this->CategoryTable;
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$tidField = $this->fld_tid;
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$whereSql = array();
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if(!empty($tid))
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{
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$sql = "SELECT $left,$right FROM $categoryTable
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WHERE id=$tid";
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$sth = $this->db->query($sql);
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$row = $sth->fetch();
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$whereSql[] = " $left BETWEEN {$row[$left]} AND {$row[$right]} ";
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}
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if(count($whereSql)>0)
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{
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$whereSql = " WHERE ".join(" AND ",$whereSql);
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}elseif ($ptype<>''){
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$whereSql = " where ptype='$ptype' ";
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} else
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$whereSql='';
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$sql = "SELECT *
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FROM $categoryTable
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$whereSql
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ORDER BY ptype ASC,$left ASC ";
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$sth = $this->db->query($sql);
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$rows = $sth->fetchAll();
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$stack = array();
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$categorys = array();
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foreach($rows as $k=>$v)
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{
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/*
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如果它是一个顶级栏目，则为它重置深度
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*/
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if(empty($v[$tidField]))
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{
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$stack = array();
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}else{
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if(count($stack) > 1)
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{
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/*
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在这个循环中必须追溯直至与其平级的分类
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while循环无法重写条件中已经改变的变量
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第一次max(array_keys($stack))赋值为当前深度
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循环中的第一个if里max(array_keys($stack))是重新统计，而非使用一定义的
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因为第二次循环到此时可能max(array_keys($stack))已经发生改变
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第三处max(array_keys($stack))表示第一个if中没有break掉的深度值，所以也不能使用赋过值的变量代替。
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加入brake 可使程序追溯至平级栏目即进行下一步操作
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必须是倒序循环，多个平级栏目时，如果是正序列循环会到第一个平级的栏目后停止循环
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*/
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for($i=max(array_keys($stack));$i>=0;$i--)
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if($v[$right]>$stack[max(array_keys($stack))])
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{
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if(count($stack)<1)
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{
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break;
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}
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if($v[$right]>$stack[max(array_keys($stack))])
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{
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array_pop($stack);
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}else{
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break;
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}
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}//end if
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}//end if
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}
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//放入输出数组
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$rows[$k][$this->DeepTitle] = count($stack);
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//将此节点加入栈中
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$stack[] = $v[$right];
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}// end foreach
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return $rows;
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}
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/**
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* Insert() 插入一个栏目
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* 返回数组 left=>左值 right=>右值
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*
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*
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* @param int $tid
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*
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* @return array
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*/
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function Insert($tid){
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$left = $this->fld_left;
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$right = $this->fld_right;
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$categoryTable = $this->CategoryTable;
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//分别处理有上级栏目和没上级栏目的
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if(!empty($tid))
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{
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$sql = "SELECT $right
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FROM $categoryTable
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WHERE id=$tid";
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$sth = $this->db->query($sql);
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$row = $sth->fetch();
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$right_start = $row[$right]-1;
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//更新所有右值
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$sql = "UPDATE $categoryTable SET $right=$right+2 WHERE $right>$right_start";
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$this->db->exec($sql);
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//更新所有左值
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$sql = "UPDATE $categoryTable SET $left=$left+2 WHERE $left>$right_start";
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$this->db->exec($sql);
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//返回应该插入的左右值
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$lft = $right_start + 1;
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$rgt = $lft + 1;
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return array(
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'left'=>$lft,
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'right'=>$rgt
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);
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}else{
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//取最大的右值
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$sql = "SELECT $right
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FROM $categoryTable
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WHERE tid=0
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ORDER BY $left DESC LIMIT 1";
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$sth = $this->db->query($sql);
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$row = $sth->fetch();
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$right_start = $row[$right]-1;
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if($right_start<1)
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{
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return array(
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'left'=>1,
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'right'=>2
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);
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}
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$lft = $right_start + 2;
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$rgt = $lft + 1;
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return array(
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'left'=>$lft,
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'right'=>$rgt
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);
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}
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}//Insert
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function GetSunCount($left,$right){
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return ($right-$left-1)/2;
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}
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//获取一个栏目
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function GetOne($tid){
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$wheresql = "";
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if(is_numeric($tid))
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{
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$wheresql = "id=$tid";
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}else{
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$wheresql = "code='$tid'";
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}
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$sql = "SELECT * FROM ".$this->CategoryTable." WHERE $wheresql";
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$sth = $this->db->query($sql);
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return $sth->fetch();
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}//GetOne
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//获得子栏目
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function getSubNode($left,$right,$data = NULL)
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{
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if(empty($data))
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{
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$sql = "SELECT * FROM ".$this->CategoryTable." WHERE ".$this->fld_left.">$left AND ".$this->fld_right."<$right ORDER BY ".$this->fld_left." ASC";
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$rs = $this->db->query($sql);
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$SN = $rs->fetchAll();
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}else{
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$SN = array();
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foreach($data as $k=>$v)
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{
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if($left < $v[$this->fld_left] && $v[$this->fld_right] < $right)
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$SN[] = $data[$k];
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}
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}
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return $SN;
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}
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//获取子栏目中的最大右值
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function getMaxSubRight($left,$right){
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$sql = "SELECT max(".$this->fld_right.") as mx FROM ".$this->CategoryTable." WHERE ".$this->fld_left.">".$left." AND ".$this->fld_right."<".$right;
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$rs = $this->db->query($sql);
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$row = $rs->fetch();
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return $row['mx'];
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}
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//获取平级栏目中的上一个栏目
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function prevnode($tid,$left,$right)
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{
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$sql = "SELECT * FROM ".$this->CategoryTable." WHERE
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".$this->fld_tid."=$tid AND
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".$this->fld_left."<$left AND
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".$this->fld_right."<$right
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ORDER BY ".$this->fld_left." DESC
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LIMIT 1
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";
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$rs = $this->db->query($sql);
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$row = $rs->fetch();
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if(empty($row))
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{
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return NULL;
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}
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return $row;
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}
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//获取平级栏目中的下一个栏目
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function nextnode($tid,$left,$right)
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{
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$sql = "SELECT * FROM ".$this->CategoryTable." WHERE
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".$this->fld_tid."=$tid AND
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".$this->fld_left.">$left AND
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".$this->fld_right.">$right
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ORDER BY ".$this->fld_left." ASC
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LIMIT 1
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";
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$rs = $this->db->query($sql);
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$row = $rs->fetch();
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if(empty($row))
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{
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return NULL;
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}
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return $row;
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}
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//移动栏目
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function move($action,$id){
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if($action == 'up')
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{
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return $this->moveup($id);
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}
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if($action == "down")
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{
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return $this->movedown($id);
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}
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}
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//栏目上移
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function moveup($id){
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$info = $this->GetOne($id);
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$tid = $info[$this->fld_tid];
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$left = $info[$this->fld_left];
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$right = $info[$this->fld_right];
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$prev = $this->prevnode($tid,$left,$right);
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if($prev === NULL )
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{
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return "此栏目已位于平级栏目的顶端";
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}
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if(is_array($prev))
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{
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$this_fd = $right-$left;
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$this_ft = $left - $prev[$this->fld_left];
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$prve_fd = $prev[$this->fld_right] - $prev[$this->fld_left];
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$new_right = $prev[$this->fld_left] + $this_fd;
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$new_left = $right - $prve_fd;
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$prev_ft = $new_left - $prev[$this->fld_left];
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$exec = array(
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'success' => array(),
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'error' => array()
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);
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$sql_1 = "UPDATE ".$this->CategoryTable." SET
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".$this->fld_left."=".$prev[$this->fld_left].",".$this->fld_right."=".$new_right.
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" WHERE id=$id";
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$sql_2 = "UPDATE ".$this->CategoryTable." SET
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".$this->fld_left."=".$new_left.",".$this->fld_right."=".$right.
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" WHERE id=".$prev['id'];
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if($this->db->exec($sql_1))
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{
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$exec['success'][] = $info['title']."[$id] :移动成功!";
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}else{
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$exec['error'][] = $info['title']."[$id] :移动失败! 请手动在数据库中修改，目标左右值 ".$prev[$this->fld_left].":".$new_right;
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}
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if($this->db->exec($sql_2))
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{
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$exec['success'][] = $prev['title']."[".$prev['id']."] :移动成功!";
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}else{
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$exec['error'][] = $prev['title']."[".$prev['id']."] :移动失败! 请手动在数据库中修改，目标左右值 ".$new_left.":".$right;
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}
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$thisnode = $this->getSubNode($left,$right);
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$prevnode = $this->getSubNode($prev[$this->fld_left],$prev[$this->fld_right]);
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/*
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$a = array();
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echo $prev[$this->fld_left].':'.$prev[$this->fld_right]." - ".$left.":".$right;
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echo "<br />";
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echo $prev[$this->fld_left].':'.$new_right." - ".$new_left.":".$right;
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echo "<br />";
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*/
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if(!empty($thisnode))
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{
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foreach($thisnode as $k=>$v)
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{
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$node_new_left = ($v[$this->fld_left]-$this_ft);
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$fd = $v[$this->fld_right] - $v[$this->fld_left];
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$node_new_right = $node_new_left + $fd;
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/*
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echo ($v['lft']) .":". ($v['rgt'])."<br />";
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echo $node_new_left .":". $node_new_right."<br />";
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echo "<br />";
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*/
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$sql = "UPDATE ".$this->CategoryTable." SET
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".$this->fld_left."=".$node_new_left.",".$this->fld_right."=".$node_new_right.
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" WHERE id=".$v['id'];
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if($this->db->exec($sql))
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{
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$exec['success'][] = $info['title']."的子栏目".$v['title']."[".$v['id']."] :移动成功!";
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}else{
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$exec['error'][] = $info['title']."的子栏目".$v['title']."[".$v['id']."] :移动失败! 请手动在数据库中修改，目标左右值 ".$node_new_left.":".$node_new_right;
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}
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}
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}
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if(!empty($prevnode))
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{
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foreach($prevnode as $k=>$v)
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{
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$node_new_left = ($v[$this->fld_left]+$prev_ft);
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$fd = $v[$this->fld_right] - $v[$this->fld_left];
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$node_new_right = $node_new_left + $fd;
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/*
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echo ($v['lft']) .":". ($v['rgt'])."<br />";
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echo $node_new_left .":". $node_new_right."<br />";
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echo "<br />";
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*/
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$sql = "UPDATE ".$this->CategoryTable." SET
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".$this->fld_left."=".$node_new_left.",".$this->fld_right."=".$node_new_right.
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" WHERE id=".$v['id'];
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if($this->db->exec($sql))
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{
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$exec['success'][] = $prev['title']."的子栏目".$v['title']."[".$v['id']."] :移动成功!";
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}else{
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$exec['error'][] = $prev['title']."的子栏目".$v['title']."[".$v['id']."] :移动失败! 请手动在数据库中修改，目标左右值 ".$node_new_left.":".$node_new_right;
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}
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}
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}
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return $exec;
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}
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if(is_string($prev))
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{
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return $prev;
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}
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}//栏目上移
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//栏目下移
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function movedown($id){
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$info = $this->GetOne($id);
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$tid = $info[$this->fld_tid];
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$left = $info[$this->fld_left];
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$right = $info[$this->fld_right];
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$next = $this->nextnode($tid,$left,$right);
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if($next === NULL )
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{
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return "此栏目已位于平级栏目的末端";
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}
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if(is_array($next))
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{
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$this_fd = $right-$left;
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$next_fd = $next[$this->fld_right] - $next[$this->fld_left];
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$new_right = $left + $next_fd;
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$new_left = $next[$this->fld_right] - $this_fd;
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$this_ft = $new_left - $left;
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$next_ft = $next[$this->fld_left] - $left;
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//echo $id."[".$left .":".$right ."]-".$next['id']."[".$next[$this->fld_left].":".$next[$this->fld_right] . "]<br />";
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//echo $next['id']."[".$left .":".$new_right ."]-".$id."[".$new_left.":".$next[$this->fld_right]."]<br /><br />";
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$exec = array(
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'success' => array(),
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'error' => array()
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);
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$sql_1 = "UPDATE ".$this->CategoryTable." SET
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".$this->fld_left."=".$new_left.",".$this->fld_right."=".$next[$this->fld_right].
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" WHERE id=$id";
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$sql_2 = "UPDATE ".$this->CategoryTable." SET
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".$this->fld_left."=".$left.",".$this->fld_right."=".$new_right.
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" WHERE id=".$next['id'];
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if($this->db->exec($sql_1))
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{
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$exec['success'][] = $info['title']."[$id] :移动成功!";
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}else{
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$exec['error'][] = $info['title']."[$id] :移动失败! 请手动在数据库中修改，目标左右值 ".$new_left.":".$next[$this->fld_right];
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}
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if($this->db->exec($sql_2))
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{
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$exec['success'][] = $next['title']."[".$next['id']."] :移动成功!";
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}else{
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$exec['error'][] = $next['title']."[".$next['id']."] :移动失败! 请手动在数据库中修改，目标左右值 ".$left.":".$this->fld_right;
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}
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$thisnode = $this->getSubNode($left,$right);
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$nextnode = $this->getSubNode($next[$this->fld_left],$next[$this->fld_right]);
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if(!empty($thisnode))
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||
{
|
||
foreach($thisnode as $k=>$v)
|
||
{
|
||
$node_new_left = ($v[$this->fld_left]+$this_ft);
|
||
$fd = $v[$this->fld_right] - $v[$this->fld_left];
|
||
$node_new_right = $node_new_left + $fd;
|
||
|
||
/*echo ($v['lft']) .":". ($v['rgt'])."<br />";
|
||
echo $node_new_left .":". $node_new_right."<br />";
|
||
echo "<br />";*/
|
||
|
||
$sql = "UPDATE ".$this->CategoryTable." SET
|
||
".$this->fld_left."=".$node_new_left.",".$this->fld_right."=".$node_new_right.
|
||
" WHERE id=".$v['id'];
|
||
if($this->db->exec($sql))
|
||
{
|
||
$exec['success'][] = $info['title']."的子栏目".$v['title']."[".$v['id']."] :移动成功!";
|
||
}else{
|
||
$exec['error'][] = $info['title']."的子栏目".$v['title']."[".$v['id']."] :移动失败! 请手动在数据库中修改，目标左右值 ".$node_new_left.":".$node_new_right;
|
||
}
|
||
}
|
||
}
|
||
|
||
if(!empty($nextnode))
|
||
{
|
||
foreach($nextnode as $k=>$v)
|
||
{
|
||
$node_new_left = ($v[$this->fld_left] - $next_ft);
|
||
$fd = $v[$this->fld_right] - $v[$this->fld_left];
|
||
$node_new_right = $node_new_left + $fd;
|
||
|
||
/*echo ($v['lft']) .":". ($v['rgt'])."<br />";
|
||
echo $node_new_left .":". $node_new_right."<br />";
|
||
echo "<br />";*/
|
||
|
||
$sql = "UPDATE ".$this->CategoryTable." SET
|
||
".$this->fld_left."=".$node_new_left.",".$this->fld_right."=".$node_new_right.
|
||
" WHERE id=".$v['id'];
|
||
if($this->db->exec($sql))
|
||
{
|
||
$exec['success'][] = $info['title']."的子栏目".$v['title']."[".$v['id']."] :移动成功!";
|
||
}else{
|
||
$exec['error'][] = $info['title']."的子栏目".$v['title']."[".$v['id']."] :移动失败! 请手动在数据库中修改，目标左右值 ".$node_new_left.":".$node_new_right;
|
||
}
|
||
}
|
||
}
|
||
|
||
return $exec;
|
||
}
|
||
|
||
if(is_string($next))
|
||
{
|
||
return $next;
|
||
}
|
||
}//栏目下移
|
||
|
||
} |