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<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace think\model\relation;
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use think\db\Query;
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use think\Exception;
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use think\Loader;
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use think\Model;
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use think\model\Relation;
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/**
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* Class OneToOne
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* @package think\model\relation
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*
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*/
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abstract class OneToOne extends Relation
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{
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// 预载入方式 0 -JOIN 1 -IN
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protected $eagerlyType = 1;
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// 当前关联的JOIN类型
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protected $joinType;
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// 要绑定的属性
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protected $bindAttr = [];
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// 关联方法名
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protected $relation;
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/**
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* 设置join类型
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* @access public
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* @param string $type JOIN类型
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* @return $this
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*/
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public function joinType($type)
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{
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$this->joinType = $type;
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return $this;
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}
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/**
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* 预载入关联查询（JOIN方式）
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* @access public
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* @param Query $query 查询对象
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* @param string $relation 关联名
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* @param string $subRelation 子关联
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* @param \Closure $closure 闭包条件
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* @param bool $first
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* @return void
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*/
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public function eagerly(Query $query, $relation, $subRelation, $closure, $first)
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{
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$name = Loader::parseName(basename(str_replace('\\', '/', get_class($query->getModel()))));
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if ($first) {
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$table = $query->getTable();
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$query->table([$table => $name]);
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if ($query->getOptions('field')) {
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$field = $query->getOptions('field');
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$query->removeOption('field');
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} else {
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$field = true;
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}
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$query->field($field, false, $table, $name);
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$field = null;
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}
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// 预载入封装
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$joinTable = $this->query->getTable();
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$joinAlias = $relation;
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$query->via($joinAlias);
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if ($this instanceof BelongsTo) {
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$query->join([$joinTable => $joinAlias], $name . '.' . $this->foreignKey . '=' . $joinAlias . '.' . $this->localKey, $this->joinType);
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} else {
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$query->join([$joinTable => $joinAlias], $name . '.' . $this->localKey . '=' . $joinAlias . '.' . $this->foreignKey, $this->joinType);
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}
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if ($closure) {
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// 执行闭包查询
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call_user_func_array($closure, [ & $query]);
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// 使用withField指定获取关联的字段，如
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// $query->where(['id'=>1])->withField('id,name');
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if ($query->getOptions('with_field')) {
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$field = $query->getOptions('with_field');
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$query->removeOption('with_field');
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}
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} elseif (isset($this->option['field'])) {
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$field = $this->option['field'];
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}
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$query->field(isset($field) ? $field : true, false, $joinTable, $joinAlias, $relation . '__');
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}
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/**
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* 预载入关联查询（数据集）
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* @param array $resultSet
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* @param string $relation
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* @param string $subRelation
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* @param \Closure $closure
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* @return mixed
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*/
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abstract protected function eagerlySet(&$resultSet, $relation, $subRelation, $closure);
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/**
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* 预载入关联查询（数据）
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* @param Model $result
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* @param string $relation
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* @param string $subRelation
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* @param \Closure $closure
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* @return mixed
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*/
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abstract protected function eagerlyOne(&$result, $relation, $subRelation, $closure);
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/**
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* 预载入关联查询（数据集）
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* @access public
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* @param array $resultSet 数据集
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* @param string $relation 当前关联名
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* @param string $subRelation 子关联名
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* @param \Closure $closure 闭包
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* @return void
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*/
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public function eagerlyResultSet(&$resultSet, $relation, $subRelation, $closure)
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{
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if (1 == $this->eagerlyType) {
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// IN查询
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$this->eagerlySet($resultSet, $relation, $subRelation, $closure);
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} else {
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// 模型关联组装
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foreach ($resultSet as $result) {
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$this->match($this->model, $relation, $result);
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}
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}
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}
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/**
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* 预载入关联查询（数据）
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* @access public
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* @param Model $result 数据对象
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* @param string $relation 当前关联名
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* @param string $subRelation 子关联名
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* @param \Closure $closure 闭包
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* @return void
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*/
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public function eagerlyResult(&$result, $relation, $subRelation, $closure)
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{
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if (1 == $this->eagerlyType) {
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// IN查询
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$this->eagerlyOne($result, $relation, $subRelation, $closure);
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} else {
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// 模型关联组装
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$this->match($this->model, $relation, $result);
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}
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}
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/**
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* 保存（新增）当前关联数据对象
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* @access public
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* @param mixed $data 数据 可以使用数组 关联模型对象 和 关联对象的主键
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* @return Model|false
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*/
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public function save($data)
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{
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if ($data instanceof Model) {
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$data = $data->getData();
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}
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$model = new $this->model;
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// 保存关联表数据
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$data[$this->foreignKey] = $this->parent->{$this->localKey};
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return $model->save($data) ? $model : false;
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}
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/**
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* 设置预载入方式
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* @access public
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* @param integer $type 预载入方式 0 JOIN查询 1 IN查询
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* @return $this
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*/
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public function setEagerlyType($type)
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{
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$this->eagerlyType = $type;
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return $this;
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}
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/**
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* 获取预载入方式
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* @access public
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* @return integer
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*/
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public function getEagerlyType()
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{
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return $this->eagerlyType;
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}
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/**
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* 绑定关联表的属性到父模型属性
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* @access public
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* @param mixed $attr 要绑定的属性列表
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* @return $this
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*/
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public function bind($attr)
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{
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if (is_string($attr)) {
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$attr = explode(',', $attr);
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}
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$this->bindAttr = $attr;
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return $this;
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}
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/**
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* 获取绑定属性
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* @access public
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* @return array
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*/
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public function getBindAttr()
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{
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return $this->bindAttr;
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}
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/**
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* 关联统计
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* @access public
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* @param Model $result 数据对象
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* @param \Closure $closure 闭包
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* @return integer
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*/
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public function relationCount($result, $closure)
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{
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}
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/**
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* 一对一 关联模型预查询拼装
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* @access public
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* @param string $model 模型名称
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* @param string $relation 关联名
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* @param Model $result 模型对象实例
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* @return void
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*/
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protected function match($model, $relation, &$result)
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{
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// 重新组装模型数据
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foreach ($result->getData() as $key => $val) {
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if (strpos($key, '__')) {
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list($name, $attr) = explode('__', $key, 2);
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if ($name == $relation) {
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$list[$name][$attr] = $val;
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unset($result->$key);
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}
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}
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}
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if (isset($list[$relation])) {
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$relationModel = new $model($list[$relation]);
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$relationModel->setParent(clone $result);
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$relationModel->isUpdate(true);
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if (!empty($this->bindAttr)) {
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$this->bindAttr($relationModel, $result, $this->bindAttr);
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}
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} else {
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$relationModel = null;
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}
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$result->setRelation(Loader::parseName($relation), $relationModel);
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}
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/**
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* 绑定关联属性到父模型
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* @access protected
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* @param Model $model 关联模型对象
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* @param Model $result 父模型对象
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* @param array $bindAttr 绑定属性
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* @return void
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* @throws Exception
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*/
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protected function bindAttr($model, &$result, $bindAttr)
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{
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foreach ($bindAttr as $key => $attr) {
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$key = is_numeric($key) ? $attr : $key;
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if (isset($result->$key)) {
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throw new Exception('bind attr has exists:' . $key);
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} else {
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$result->setAttr($key, $model ? $model->$attr : null);
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}
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}
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}
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/**
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* 一对一 关联模型预查询（IN方式）
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* @access public
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* @param object $model 关联模型对象
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* @param array $where 关联预查询条件
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* @param string $key 关联键名
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* @param string $relation 关联名
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* @param string $subRelation 子关联
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* @param bool|\Closure $closure
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* @return array
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*/
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protected function eagerlyWhere($model, $where, $key, $relation, $subRelation = '', $closure = false)
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{
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$this->baseQuery = true;
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// 预载入关联查询 支持嵌套预载入
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if ($closure) {
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call_user_func_array($closure, [ & $model]);
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if ($field = $model->getOptions('with_field')) {
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$model->field($field)->removeOption('with_field');
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}
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}
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$list = $model->where($where)->with($subRelation)->select();
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// 组装模型数据
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$data = [];
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foreach ($list as $set) {
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$data[$set->$key] = $set;
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}
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return $data;
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}
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/**
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* 创建关联统计子查询
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* @access public
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* @param \Closure $closure 闭包
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* @param string $name 统计数据别名
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* @return string
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*/
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public function getRelationCountQuery($closure, &$name = null)
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{
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throw new Exception('relation not support: withCount');
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}
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}
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