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elasticsearch ActiveRelation and activeQuery

tags/2.0.0-beta
Carsten Brandt 12 years ago
parent
bd589620d8
commit
9f12185362
2 changed files with 69 additions and 320 deletions
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  1. 324
      framework/yii/elasticsearch/ActiveQuery.php
  2. 65
      framework/yii/elasticsearch/ActiveRelation.php

324
framework/yii/elasticsearch/ActiveQuery.php
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@ -7,9 +7,8 @@
namespace yii\elasticsearch;
use Guzzle\Http\Client;
use Guzzle\Http\Exception\MultiTransferException;
use yii\base\NotSupportedException;
use yii\db\Exception;
use yii\db\ActiveQueryInterface;
use yii\db\ActiveQueryTrait;
use yii\helpers\Json;
/**
@ -47,21 +46,9 @@ use yii\helpers\Json;
* @author Carsten Brandt <mail@cebe.cc>
* @since 2.0
*/
class ActiveQuery extends Query
class ActiveQuery extends Query implements ActiveQueryInterface
{
/**
* @var string the name of the ActiveRecord class.
*/
public $modelClass;
/**
* @var array list of relations that this query should be performed with
*/
public $with;
/**
* @var boolean whether to return each record as an array. If false (default), an object
* of [[modelClass]] will be created to represent each record.
*/
public $asArray;
use ActiveQueryTrait;
/**
* Creates a DB command that can be used to execute this query.
@ -99,177 +86,6 @@ class ActiveQuery extends Query
}
/**
* Returns the query result as a scalar value.
* The value returned will be the first column in the first row of the query results.
* @param string $column name of the column to select
* @return string|boolean the value of the first column in the first row of the query result.
* False is returned if the query result is empty.
*/
public function scalar($column)
{
$record = $this->one();
return $record->$column;
}
/**
* Returns a value indicating whether the query result contains any row of data.
* @return boolean whether the query result contains any row of data.
*/
public function exists()
{
return $this->one() !== null;
}
/**
* Executes a script created by [[LuaScriptBuilder]]
* @param string $type
* @param null $column
* @return array|bool|null|string
*/
protected function executeScript($type, $columnName=null)
{
if (($data = $this->findByPk($type)) === false) {
$modelClass = $this->modelClass;
$http = $modelClass::getDb()->http();
$url = '/' . $modelClass::indexName() . '/' . $modelClass::indexType() . '/_search';
$query = $modelClass::getDb()->getQueryBuilder()->build($this);
$response = $http->post($url, null, Json::encode($query))->send();
$data = Json::decode($response->getBody(true));
return $data['hits']['hits'];
}
return $data;
}
/**
* Fetch by pk if possible as this is much faster
*/
private function findByPk($type, $columnName = null)
{
$modelClass = $this->modelClass;
if (is_array($this->where) && !isset($this->where[0]) && $modelClass::isPrimaryKey(array_keys($this->where))) {
/** @var Client $http */
$http = $modelClass::getDb()->http();
$pks = (array) reset($this->where);
$query = array('docs' => array());
foreach($pks as $pk) {
$doc = array('_id' => $pk);
if (!empty($this->select)) {
$doc['fields'] = $this->select;
}
$query['docs'][] = $doc;
}
$url = '/' . $modelClass::indexName() . '/' . $modelClass::indexType() . '/_mget';
$response = $http->post($url, null, Json::encode($query))->send();
$data = Json::decode($response->getBody(true));
$start = $this->offset === null ? 0 : $this->offset;
$data = array_slice($data['docs'], $start, $this->limit);
// TODO support orderBy
switch($type) {
case 'All':
return $data;
case 'One':
return empty($data) ? null : reset($data);
case 'Column':
$column = array();
foreach($data as $row) {
$row['_source']['id'] = $row['_id'];
if ($this->indexBy === null) {
$column[] = $row['_source'][$columnName];
} else {
if (is_string($this->indexBy)) {
$key = $row['_source'][$this->indexBy];
} else {
$key = call_user_func($this->indexBy, $row['_source']);
}
$models[$key] = $row;
}
}
return $column;
case 'Count':
return count($data);
case 'Sum':
$sum = 0;
foreach($data as $dataRow) {
$c = count($dataRow);
for($i = 0; $i < $c; ) {
if ($dataRow[$i++] == $columnName) {
$sum += $dataRow[$i];
break;
}
}
}
return $sum;
case 'Average':
$sum = 0;
$count = 0;
foreach($data as $dataRow) {
$count++;
$c = count($dataRow);
for($i = 0; $i < $c; ) {
if ($dataRow[$i++] == $columnName) {
$sum += $dataRow[$i];
break;
}
}
}
return $sum / $count;
case 'Min':
$min = null;
foreach($data as $dataRow) {
$c = count($dataRow);
for($i = 0; $i < $c; ) {
if ($dataRow[$i++] == $columnName && ($min == null || $dataRow[$i] < $min)) {
$min = $dataRow[$i];
break;
}
}
}
return $min;
case 'Max':
$max = null;
foreach($data as $dataRow) {
$c = count($dataRow);
for($i = 0; $i < $c; ) {
if ($dataRow[$i++] == $columnName && ($max == null || $dataRow[$i] > $max)) {
$max = $dataRow[$i];
break;
}
}
}
return $max;
}
}
return false;
}
// TODO: refactor. code below here is all duplicated from yii/db/ActiveQuery and yii/db/Query
/**
* PHP magic method.
* This method allows calling static method defined in [[modelClass]] via this query object.
* It is mainly implemented for supporting the feature of scope.
* @param string $name the method name to be called
* @param array $params the parameters passed to the method
* @return mixed the method return result
*/
public function __call($name, $params)
{
if (method_exists($this->modelClass, $name)) {
array_unshift($params, $this);
call_user_func_array(array($this->modelClass, $name), $params);
return $this;
} else {
return parent::__call($name, $params);
}
}
/**
* Executes query and returns all results as an array.
* @param Connection $db the DB connection used to create the DB command.
* If null, the DB connection returned by [[modelClass]] will be used.
@ -320,136 +136,4 @@ class ActiveQuery extends Query
return null;
}
}
/**
* Sets the [[asArray]] property.
* @param boolean $value whether to return the query results in terms of arrays instead of Active Records.
* @return ActiveQuery the query object itself
*/
public function asArray($value = true)
{
$this->asArray = $value;
return $this;
}
/**
* Specifies the relations with which this query should be performed.
*
* The parameters to this method can be either one or multiple strings, or a single array
* of relation names and the optional callbacks to customize the relations.
*
* The followings are some usage examples:
*
* ~~~
* // find customers together with their orders and country
* Customer::find()->with('orders', 'country')->all();
* // find customers together with their country and orders of status 1
* Customer::find()->with(array(
* 'orders' => function($query) {
* $query->andWhere('status = 1');
* },
* 'country',
* ))->all();
* ~~~
*
* @return ActiveQuery the query object itself
*/
public function with()
{
$this->with = func_get_args();
if (isset($this->with[0]) && is_array($this->with[0])) {
// the parameter is given as an array
$this->with = $this->with[0];
}
return $this;
}
private function createModels($rows)
{
$models = array();
if ($this->asArray) {
if ($this->indexBy === null) {
return $rows;
}
foreach ($rows as $row) {
if (is_string($this->indexBy)) {
$key = $row[$this->indexBy];
} else {
$key = call_user_func($this->indexBy, $row);
}
$models[$key] = $row;
}
} else {
/** @var $class ActiveRecord */
$class = $this->modelClass;
if ($this->indexBy === null) {
foreach ($rows as $row) {
$models[] = $class::create($row);
}
} else {
foreach ($rows as $row) {
$model = $class::create($row);
if (is_string($this->indexBy)) {
$key = $model->{$this->indexBy};
} else {
$key = call_user_func($this->indexBy, $model);
}
$models[$key] = $model;
}
}
}
return $models;
}
private function populateRelations(&$models, $with)
{
$primaryModel = new $this->modelClass;
$relations = $this->normalizeRelations($primaryModel, $with);
foreach ($relations as $name => $relation) {
if ($relation->asArray === null) {
// inherit asArray from primary query
$relation->asArray = $this->asArray;
}
$relation->findWith($name, $models);
}
}
/**
* @param ActiveRecord $model
* @param array $with
* @return ActiveRelation[]
*/
private function normalizeRelations($model, $with)
{
$relations = array();
foreach ($with as $name => $callback) {
if (is_integer($name)) {
$name = $callback;
$callback = null;
}
if (($pos = strpos($name, '.')) !== false) {
// with sub-relations
$childName = substr($name, $pos + 1);
$name = substr($name, 0, $pos);
} else {
$childName = null;
}
$t = strtolower($name);
if (!isset($relations[$t])) {
$relation = $model->getRelation($name);
$relation->primaryModel = null;
$relations[$t] = $relation;
} else {
$relation = $relations[$t];
}
if (isset($childName)) {
$relation->with[$childName] = $callback;
} elseif ($callback !== null) {
call_user_func($callback, $relation);
}
}
return $relations;
}
}

65
framework/yii/elasticsearch/ActiveRelation.php
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@ -0,0 +1,65 @@
<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\elasticsearch;
use yii\db\ActiveRelationInterface;
use yii\db\ActiveRelationTrait;
/**
* ActiveRelation represents a relation between two Active Record classes.
*
* ActiveRelation instances are usually created by calling [[ActiveRecord::hasOne()]] and
* [[ActiveRecord::hasMany()]]. An Active Record class declares a relation by defining
* a getter method which calls one of the above methods and returns the created ActiveRelation object.
*
* A relation is specified by [[link]] which represents the association between columns
* of different tables; and the multiplicity of the relation is indicated by [[multiple]].
*
* If a relation involves a pivot table, it may be specified by [[via()]] method.
*
* @author Carsten Brandt <mail@cebe.cc>
* @since 2.0
*/
class ActiveRelation extends ActiveQuery implements ActiveRelationInterface
{
use ActiveRelationTrait;
/**
* Creates a DB command that can be used to execute this query.
* @param Connection $db the DB connection used to create the DB command.
* If null, the DB connection returned by [[modelClass]] will be used.
* @return Command the created DB command instance.
*/
public function createCommand($db = null)
{
if ($this->primaryModel !== null) {
// lazy loading
if ($this->via instanceof ActiveRelationInterface) {
// via pivot table
$viaModels = $this->via->findPivotRows([$this->primaryModel]);
$this->filterByModels($viaModels);
} elseif (is_array($this->via)) {
// via relation
/** @var ActiveRelation $viaQuery */
list($viaName, $viaQuery) = $this->via;
if ($viaQuery->multiple) {
$viaModels = $viaQuery->all();
$this->primaryModel->populateRelation($viaName, $viaModels);
} else {
$model = $viaQuery->one();
$this->primaryModel->populateRelation($viaName, $model);
$viaModels = $model === null ? [] : [$model];
}
$this->filterByModels($viaModels);
} else {
$this->filterByModels([$this->primaryModel]);
}
}
return parent::createCommand($db);
}
}
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