577 lines
15 KiB
PHP
Executable File
577 lines
15 KiB
PHP
Executable File
<?php
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namespace Rails\ActiveRecord\Relation;
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use ReflectionClass;
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use ReflectionException;
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use Rails;
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use Rails\ActiveRecord\ActiveRecord;
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use Rails\Toolbox;
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use Rails\ActiveRecord\Exception;
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abstract class AbstractRelation
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{
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public
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$builder;
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protected
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$select = [],
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$distinct,
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$from,
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$joins = [],
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$where = [],
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$where_params = [],
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$order = [],
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$group = [],
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$having = [],
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$having_params = [],
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$offset,
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$limit,
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$page,
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$per_page,
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$pages,
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$rows,
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$complete_sql,
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$will_paginate,
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$model_name,
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$previous_connection_name;
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/**
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* Should be used only by ActiveRecord_Base.
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*/
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public function __construct($model_name = null, $table_name = null)
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{
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if ($model_name) {
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$this->model_name = $model_name;
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$this->from($table_name);
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}
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}
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public function __call($method, $params)
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{
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/**
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* Check if method is a scope method in the model class.
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*/
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$cn = $this->model_name;
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if ($this->merge_with_scope($method, $params))
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return $this;
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throw new Exception\BadMethodCallException(
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sprintf("Call to undefined method %s::%s()", __CLASS__, $method)
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);
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}
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/**
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* Excecutes the query.
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* Returns all records.
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*
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* @return ActiveRecord\Collection
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*/
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public function take($limit = null)
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{
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if ($limit !== null) {
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$this->limit($limit);
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}
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$this->executeSql();
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$cn = $this->model_name;
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return $cn::createModelsFromQuery($this);
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}
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/**
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* Executes a pagination query, that will calculate found rows.
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* Both parameters (page and per_page) must be set, else an Exception will be thrown.
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* Parameters can be set on the fly or using page() and per_page().
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*
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* @param int $page Current page number
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* @param int $per_page Results per page
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* @throw Exception
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* @see page()
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* @see per_page()
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*/
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public function paginate($page = null, $per_page = null)
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{
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if ($page !== null)
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$this->page($page);
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if ($per_page !== null)
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$this->perPage($per_page);
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if ($this->page === null)
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throw new Exception\BadMethodCallException("Missing page parameter for pagination");
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elseif ($this->limit === null || $this->offset === null)
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throw new Exception\BadMethodCallException("Missing per_page parameter for pagination");
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$this->will_paginate = true;
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return $this->take();
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}
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/**
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* For this to work, all :where parameters must have been passed like this:
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* Model::where(["foo" => $foo, "bar" => $bar])->where(["baz" => $baz]);
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*/
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public function firstOrInitialize()
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{
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$model = $this->first();
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if ($model)
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return $model;
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else {
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$cn = $this->model_name;
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$model = new $cn();
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foreach ($this->where as $params) {
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if (!is_array($params))
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throw new Exception\InvalidArgumentException("Invalid 'where' parameters passed for firstOrInitialize");
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foreach ($params as $column => $value)
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$model->$column = $value;
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}
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return $model;
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}
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}
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/**
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* For this to work, all :where parameters must have been passed like this:
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* Model::where(["foo" => $foo, "bar" => $bar])->where(["baz" => $baz]);
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*
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* A closure object may be passed to perform any additional actions (like adding
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* additional properties to the model) before it is created.
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*/
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public function firstOrCreate(Closure $block = null)
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{
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$model = $this->first();
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if ($model) {
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return $model;
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} else {
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$cn = $this->model_name;
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$model = new $cn();
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foreach ($this->where as $params) {
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if (!is_array($params)) {
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throw new Exception\InvalidArgumentException("Invalid 'where' parameters passed for firstOrCreate");
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}
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foreach ($params as $column => $value)
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$model->$column = $value;
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}
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if ($block)
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$block($model);
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$model->save();
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return $model;
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}
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}
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/**
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* @return null|ActiveRecord_Base The records found or null
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*/
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public function first($limit = 1)
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{
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$this->limit = $limit;
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$collection = $this->take();
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if ($limit == 1) {
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if ($collection->any())
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return $collection[0];
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} else
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return $collection;
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}
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/**
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* Accepts more than 1 argument.
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*/
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public function pluck($column)
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{
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$columns = func_get_args();
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$argv_count = func_num_args();
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$collection = $this->take();
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$values = [];
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if ($collection->any()) {
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if ($argv_count == 1) {
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foreach ($collection as $model)
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$values[] = $model->$column;
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} else {
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foreach ($collection as $model) {
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$row_values = [];
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foreach ($columns as $column) {
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$row_values[] = $model->$column;
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}
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$values[] = $row_values;
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}
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}
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}
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return $values;
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}
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public function count()
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{
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$this->select('COUNT(*) as count_all');
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$this->executeSql();
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if (($rows = $this->builder->stmt()->fetchAll()) && isset($rows[0]['count_all']))
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return (int)$rows[0]['count_all'];
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}
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public function exists()
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{
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return (bool)$this->count();
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}
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public function last()
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{
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$this->limit = 1;
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$collection = $this->take();
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if ($collection->any())
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return last($collection->members());
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}
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/**
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* "Unsets" a clause.
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* If the clause is invalid, it's just ignored.
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* This method has a complementary method called "only",
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* not yet implemented.
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*/
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public function except($clause)
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{
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// $prop = '_' . $clause;
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switch ($clause) {
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case 'distinct':
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case 'from':
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case 'offset':
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case 'limit':
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case 'page':
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case 'per_page':
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$this->$clause = null;
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break;
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case 'select':
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case 'joins':
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case 'where':
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case 'where_params':
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case 'order':
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case 'group':
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case 'having':
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case 'having_params':
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$this->$clause = [];
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break;
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}
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return $this;
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}
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/**
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* Methods that modify the query {
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*/
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public function from($from)
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{
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$this->from = $from;
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return $this;
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}
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public function group()
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{
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$this->group = array_merge($this->group, func_get_args());
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return $this;
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}
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/**
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* How to use:
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* $query->having("foo > ? AND bar < ?", $foo, $bar);
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* $query->having("foo > :foo AND bar < :bar", ['foo' => $foo, 'bar' => $bar]);
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* $query->having("foo > 15");
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*/
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public function having()
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{
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$args = func_get_args();
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$count = count($args);
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if ($count == 1) {
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$this->having[] = $args[0];
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} else {
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$this->having[] = array_shift($args);
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if ($count == 2 && is_array($args[0]))
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$args = $args[0];
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if ($args)
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$this->having_params = array_merge($this->having_params, $args);
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}
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return $this;
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}
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public function joins($params)
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{
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if (!is_array($params))
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$params = [$params];
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$this->joins = array_merge($this->joins, $params);
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return $this;
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}
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public function limit($limit)
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{
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$this->limit = $limit;
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return $this;
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}
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public function offset($offset)
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{
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$this->offset = $offset;
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return $this;
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}
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public function order()
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{
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$this->order = array_merge($this->order, func_get_args());
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return $this;
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}
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public function select($params)
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{
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if (!is_array($params))
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$params = [$params];
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$this->select = array_merge($this->select, $params);
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return $this;
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}
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public function distinct($value = true)
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{
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$this->distinct = $value;
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return $this;
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}
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/**
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* $query->where("foo = ? AND bar = ?", $foo, $bar);
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* $query->where("foo = ? AND bar = ?", $foo, [$bar, $baz]);
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* $query->where("foo = :foo AND bar = :bar", ['foo' => $foo, 'bar' => $bar]);
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* $query->where("foo = true");
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*
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* Following 2 methods are basically the same, first is recommended over the second:
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* $query->where(["foo" => $foo, "bar" => $bar]);
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* $query->where("foo", true, "bar", $bar);
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*
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* Can't do:
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* $query->where("foo = ? AND bar = ?", [$foo, $bar]);
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* $query->where(["foo = ? AND bar = ?", $foo, $bar]);
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* $query->where(["foo", $foo]);
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*/
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public function where()
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{
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$args = func_get_args();
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$count = count($args);
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if ($count == 1) {
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if (is_array($args[0])) {
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# This is expected to be a column => value associated array.
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# In this case, the array is stored as is.
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$this->where[] = $args[0];
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} else {
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# This is expected to be a string.
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$this->where[] = $args[0];
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}
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} elseif ($count) {
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# Case: $query->where("foo", true, "bar_baz", $bar);
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if ($count >= 2 && is_int($count / 2) && (!is_array($args[1]) || Toolbox\ArrayTools::isIndexed($args[1])) && is_bool(strpos($args[0], ' '))) {
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$where = [];
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foreach ($args as $key => $value) {
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$key++;
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if ($key && !($key % 2)) {
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$where[$next_key] = $value;
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} else {
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$next_key = $value;
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}
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}
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$this->where[] = $where;
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} else {
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$this->where[] = array_shift($args);
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# Case: $query->where('foo => :foo', ['foo' => $foo]);
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if ($count == 2 && is_array($args[0]) && !Toolbox\ArrayTools::isIndexed($args[0]))
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$args = $args[0];
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if ($args)
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$this->where_params = array_merge($this->where_params, $args);
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}
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}
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return $this;
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}
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/**
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* }
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*/
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public function page($page)
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{
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$this->page = $page;
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return $this;
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}
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/**
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* Note that for this to work correctly, $page must be set.
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*/
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public function perPage($per_page)
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{
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$this->limit = $per_page;
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$this->offset = ($this->page - 1) * $per_page;
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return $this;
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}
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/**
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* The following public methods are supposed to be used only by Rails.
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*/
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public function will_paginate()
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{
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return $this->will_paginate;
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}
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/**
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* TODO: this method should be changed.
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* Expected to be used only by the system, when calling find_by_sql().
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*/
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public function complete_sql($sql = null, array $params = [], array $extra_params = [])
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{
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if (func_num_args()) {
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if (isset($extra_params['page']))
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$this->page = $extra_params['page'];
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if (isset($extra_params['perPage']))
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$this->limit = $extra_params['perPage'];
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if (isset($extra_params['offset']))
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$this->offset = $extra_params['offset'];
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if ($this->page && $this->limit)
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$this->will_paginate = true;
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$this->complete_sql = [$sql, $params];
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return $this;
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} else
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return $this->complete_sql;
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}
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public function get_page()
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{
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return $this->page;
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}
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public function get_per_page()
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{
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return $this->limit;
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}
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public function get_offset()
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{
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return $this->offset;
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}
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public function get_row_count()
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{
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return $this->builder->row_count();
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}
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public function get_results()
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{
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return $this->builder->stmt();
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}
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public function merge(self $other)
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{
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$scalars = [
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'distinct',
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'from',
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'offset',
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'limit',
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'page',
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'per_page',
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];
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$arrays = [
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'select',
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'joins',
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'where',
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'where_params',
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'order',
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'group',
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'having',
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'having_params',
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];
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foreach ($scalars as $scalar) {
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if ($other->$scalar !== null) {
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$this->$scalar = $other->$scalar;
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}
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}
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foreach ($arrays as $array) {
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$this->$array = array_merge($this->$array, $other->$array);
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}
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return $this;
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}
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# This method is expected to be used only by Rails.
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public function default_scoped($value)
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{
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$this->default_scoped = (bool)$value;
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return $this;
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}
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private function _set_model_connection()
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{
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if (defined($this->model_name . '::connection')) {
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$this->previous_connection_name = ActiveRecord::activeConnectionName();
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$model_name = $this->model_name;
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ActiveRecord::setConnection($model_name::connection);
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return true;
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}
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}
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private function _restore_previous_connection()
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{
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if ($this->previous_connection_name) {
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ActiveRecord::setConnection($this->previous_connection_name);
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$this->previous_connection_name = null;
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}
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}
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protected function executeSql()
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{
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$this->_set_model_connection();
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$builder_class = $this->_get_builder_class();
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$model_name = $this->model_name;
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$model_connection = $model_name::connection();
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$this->builder = new $builder_class($model_connection);
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$this->builder->build_sql($this);
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$this->builder->executeSql();
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$this->_restore_previous_connection();
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}
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private function merge_with_scope($name, array $params)
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{
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$cn = $this->model_name;
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if ($relation = $cn::scope($name, $params)) {
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$this->merge($relation);
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return true;
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}
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return false;
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}
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private function _get_builder_class()
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{
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$cn = $this->model_name;
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$class = '\Rails\ActiveRecord\Adapter\\';
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$class .= ActiveRecord::proper_adapter_name($cn::connection()->adapterName());
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$class .= '\QueryBuilder';
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return $class;
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}
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} |