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Commit f759ee18 by Carsten Brandt
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Elasticsearch WIP

parent 38dab349
Showing with 512 additions and 0 deletions
framework/yii/db/elasticsearch/ActiveQuery.php 0 → 100644
<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\elasticsearch;
/**
* ActiveQuery represents a DB query associated with an Active Record class.
*
*
* @author Carsten Brandt <mail@cebe.cc>
* @since 2.0
*/
class ActiveQuery extends \yii\base\Component
{
/**
* @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 string the name of the column by which query results should be indexed by.
* This is only used when the query result is returned as an array when calling [[all()]].
*/
public $indexBy;
/**
* @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;
/**
* @var integer maximum number of records to be returned. If not set or less than 0, it means no limit.
*/
public $limit;
/**
* @var integer zero-based offset from where the records are to be returned.
* If not set, it means starting from the beginning.
* If less than zero it means starting n elements from the end.
*/
public $offset;
/**
* @var array array of primary keys of the records to find.
*/
public $primaryKeys;
/**
* List of multiple pks must be zero based
*
* @param $primaryKeys
* @return ActiveQuery
*/
public function primaryKeys($primaryKeys) {
if (is_array($primaryKeys) && isset($primaryKeys[0])) {
$this->primaryKeys = $primaryKeys;
} else {
$this->primaryKeys = array($primaryKeys);
}
return $this;
}
/**
* Executes query and returns all results as an array.
* @return array the query results. If the query results in nothing, an empty array will be returned.
*/
public function all()
{
$modelClass = $this->modelClass;
/** @var Connection $db */
$db = $modelClass::getDb();
if (($primaryKeys = $this->primaryKeys) === null) {
$start = $this->offset === null ? 0 : $this->offset;
$end = $this->limit === null ? -1 : $start + $this->limit;
$primaryKeys = $db->executeCommand('LRANGE', array($modelClass::tableName(), $start, $end));
}
$rows = array();
foreach($primaryKeys as $pk) {
$key = $modelClass::tableName() . ':a:' . $modelClass::hashPk($pk);
// get attributes
$data = $db->executeCommand('HGETALL', array($key));
$row = array();
for($i=0;$i<count($data);) {
$row[$data[$i++]] = $data[$i++];
}
$rows[] = $row;
}
if ($rows !== array()) {
$models = $this->createModels($rows);
if (!empty($this->with)) {
$this->populateRelations($models, $this->with);
}
return $models;
} else {
return array();
}
}
/**
* Executes query and returns a single row of result.
* @return ActiveRecord|array|null a single row of query result. Depending on the setting of [[asArray]],
* the query result may be either an array or an ActiveRecord object. Null will be returned
* if the query results in nothing.
*/
public function one()
{
$modelClass = $this->modelClass;
/** @var Connection $db */
$db = $modelClass::getDb();
if (($primaryKeys = $this->primaryKeys) === null) {
$start = $this->offset === null ? 0 : $this->offset;
$primaryKeys = $db->executeCommand('LRANGE', array($modelClass::tableName(), $start, $start + 1));
}
$pk = reset($primaryKeys);
$key = $modelClass::tableName() . ':a:' . $modelClass::hashPk($pk);
// get attributes
$data = $db->executeCommand('HGETALL', array($key));
if ($data === array()) {
return null;
}
$row = array();
for($i=0;$i<count($data);) {
$row[$data[$i++]] = $data[$i++];
}
if (!$this->asArray) {
/** @var $class ActiveRecord */
$class = $this->modelClass;
$model = $class::create($row);
if (!empty($this->with)) {
$models = array($model);
$this->populateRelations($models, $this->with);
$model = $models[0];
}
return $model;
} else {
return $row;
}
}
/**
* Returns the number of records.
* @param string $q the COUNT expression. Defaults to '*'.
* Make sure you properly quote column names.
* @return integer number of records
*/
public function count()
{
$modelClass = $this->modelClass;
/** @var Connection $db */
$db = $modelClass::getDb();
return $db->executeCommand('LLEN', array($modelClass::tableName()));
}
/**
* Returns the query result as a scalar value.
* The value returned will be the first column in the first row of the query results.
* @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;
}
/**
* Sets the [[asArray]] property.
* TODO: refactor, it is duplicated from yii/db/ActiveQuery
* @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;
}
/**
* Sets the LIMIT part of the query.
* TODO: refactor, it is duplicated from yii/db/Query
* @param integer $limit the limit
* @return Query the query object itself
*/
public function limit($limit)
{
$this->limit = $limit;
return $this;
}
/**
* Sets the OFFSET part of the query.
* TODO: refactor, it is duplicated from yii/db/Query
* @param integer $offset the offset
* @return Query the query object itself
*/
public function offset($offset)
{
$this->offset = $offset;
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();
* ~~~
*
* TODO: refactor, it is duplicated from yii/db/ActiveQuery
* @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;
}
/**
* Sets the [[indexBy]] property.
* TODO: refactor, it is duplicated from yii/db/ActiveQuery
* @param string $column the name of the column by which the query results should be indexed by.
* @return ActiveQuery the query object itself
*/
public function indexBy($column)
{
$this->indexBy = $column;
return $this;
}
// TODO: refactor, it is duplicated from yii/db/ActiveQuery
private function createModels($rows)
{
$models = array();
if ($this->asArray) {
if ($this->indexBy === null) {
return $rows;
}
foreach ($rows as $row) {
$models[$row[$this->indexBy]] = $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);
$models[$model->{$this->indexBy}] = $model;
}
}
}
return $models;
}
// TODO: refactor, it is duplicated from yii/db/ActiveQuery
private function populateRelations(&$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);
}
}
/**
* TODO: refactor, it is duplicated from yii/db/ActiveQuery
* @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;
}
}
framework/yii/db/elasticsearch/Connection.php 0 → 100644
<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\elasticsearch;
use yii\base\Component;
use yii\base\InvalidConfigException;
/**
*
* @author Carsten Brandt <mail@cebe.cc>
* @since 2.0
*/
class Connection extends Component
{
/**
* @event Event an event that is triggered after a DB connection is established
*/
const EVENT_AFTER_OPEN = 'afterOpen';
// TODO add autodetection of cluster nodes
public $nodes = array();
// TODO use timeouts
/**
* @var float timeout to use for connection to redis. If not set the timeout set in php.ini will be used: ini_get("default_socket_timeout")
*/
public $connectionTimeout = null;
/**
* @var float timeout to use for redis socket when reading and writing data. If not set the php default value will be used.
*/
public $dataTimeout = null;
public function init()
{
if ($this->nodes === array()) {
throw new InvalidConfigException('elasticsearch needs at least one node.');
}
}
/**
* Closes the connection when this component is being serialized.
* @return array
*/
public function __sleep()
{
$this->close();
return array_keys(get_object_vars($this));
}
/**
* Returns a value indicating whether the DB connection is established.
* @return boolean whether the DB connection is established
*/
public function getIsActive()
{
return false; // TODO implement
}
/**
* Establishes a DB connection.
* It does nothing if a DB connection has already been established.
* @throws Exception if connection fails
*/
public function open()
{
/* if ($this->_socket === null) {
if (empty($this->dsn)) {
throw new InvalidConfigException('Connection.dsn cannot be empty.');
}
$dsn = explode('/', $this->dsn);
$host = $dsn[2];
if (strpos($host, ':')===false) {
$host .= ':6379';
}
$db = isset($dsn[3]) ? $dsn[3] : 0;
\Yii::trace('Opening DB connection: ' . $this->dsn, __CLASS__);
$this->_socket = @stream_socket_client(
$host,
$errorNumber,
$errorDescription,
$this->connectionTimeout ? $this->connectionTimeout : ini_get("default_socket_timeout")
);
if ($this->_socket) {
if ($this->dataTimeout !== null) {
stream_set_timeout($this->_socket, $timeout=(int)$this->dataTimeout, (int) (($this->dataTimeout - $timeout) * 1000000));
}
if ($this->password !== null) {
$this->executeCommand('AUTH', array($this->password));
}
$this->executeCommand('SELECT', array($db));
$this->initConnection();
} else {
\Yii::error("Failed to open DB connection ({$this->dsn}): " . $errorNumber . ' - ' . $errorDescription, __CLASS__);
$message = YII_DEBUG ? 'Failed to open DB connection: ' . $errorNumber . ' - ' . $errorDescription : 'Failed to open DB connection.';
throw new Exception($message, $errorDescription, (int)$errorNumber);
}
}*/
// TODO implement
}
/**
* Closes the currently active DB connection.
* It does nothing if the connection is already closed.
*/
public function close()
{
// TODO implement
/* if ($this->_socket !== null) {
\Yii::trace('Closing DB connection: ' . $this->dsn, __CLASS__);
$this->executeCommand('QUIT');
stream_socket_shutdown($this->_socket, STREAM_SHUT_RDWR);
$this->_socket = null;
$this->_transaction = null;
}*/
}
/**
* Initializes the DB connection.
* This method is invoked right after the DB connection is established.
* The default implementation triggers an [[EVENT_AFTER_OPEN]] event.
*/
protected function initConnection()
{
$this->trigger(self::EVENT_AFTER_OPEN);
}
/**
* Returns the name of the DB driver for the current [[dsn]].
* @return string name of the DB driver
*/
public function getDriverName()
{
return 'elasticsearch';
}
}
\ No newline at end of file
framework/yii/db/elasticsearch/Node.php 0 → 100644
<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright &copy; 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\elasticsearch;
use yii\base\Object;
/**
* Represents an elastic search cluster node.
*
* @author Carsten Brandt <mail@cebe.cc>
* @since 2.0
*/
class Node extends Object
{
public $host;
public $port;
}
\ No newline at end of file
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