rexpro-php-driver

A PHP Extension for Rexpro written in Zephir

Installation

from the root directory:

• cd ext
• make clean
• phpize --clean
• phpize
• ./configure --enable-rexpro
• make
• make install

Basic Usage

The most basic usage of Rexpro is to execute a script (query) against a Rexster server using Gremlin. This is done by instantiating a Rexpro client, and executing the exectueScript method. This will return an instance of \Rexpro\Message.

The Message returned will have basic meta-data from the Rexster server, as well as an embeded Message Body. The Message Body will be an instance of \Rexpro\Message\Body\Response. It will either be a \Rexpro\Message\Body\Response\Script or a \Rexpro\Message\Body\Response\Error.

###Usage Example

<?php

$graph_name = 'example';
$params = array('MY_BOUND_PARAM' => 'engineering');

$client  = new \Rexpro\Client('tcp://localhost:8184');
$client->executeScript('g.addVertex(name:MY_BOUND_PARAM)', $graph_name, $params);

$results = $client->executeScript('g.V("name", MY_BOUND_PARAM)', $graph_name, $params)->getMessageBody();

echo(get_class($results)); // \Rexpro\Message\Body\Response\Script
var_dump($results->getResults()); // See Below
/*
array(1) {
  [0] =>
  array(3) {
    '_type' =>
    string(6) "vertex"
    '_id' =>
    string(6) "440068"
    '_properties' =>
    array(1) {
      'name' =>
      string(20) "engineering"
    }
  }
}
*/

var_dump($results->toArray()); // See Below
/*
array(5) {
  'session' =>
  string(36) "00000000-0000-0000-0000-000000000000"
  'request' =>
  string(36) "a2bedfa8-46d8-4df7-937c-81c8a3e319d3"
  'meta' =>
  array(0) {
  }
  'results' =>
  array(1) {
    [0] =>
    array(3) {
      '_type' =>
      string(6) "vertex"
      '_id' =>
      string(6) "440068"
      '_properties' =>
      array(1) {
        'name' =>
        string(20) "engineering"
      }
    }
  }
  'bindings' =>
  array(0) {
  }
}
*/

Advanced Usage

Some use cases may require more advanced usage. In this case, you will need to instantiate the message and message body directly, then use the client to send the message and get the response manually. See the example below.

###Usage Example

<?php
require_once('vendor/autoload.php');

$graph_name = 'example';
$params  = array('MY_BOUND_PARAM' => 'engineering');
$client  = new \Rexpro\Client('tcp://localhost:8184');

$script  = new \Rexpro\Message\Body\Request\Script();
$script->setScript('g.addVertex(name:MY_BOUND_PARAM)');
$script->setBindings($params);
$script->setMeta(array('graphName' => $graph_name));

$message = new \Rexpro\Message();
$message->setMessageBody($script);
$client->send($message);

$script  = new \Rexpro\Message\Body\Request\Script();
$script->setScript('g.V("name", MY_BOUND_PARAM)');
$script->setBindings($params);
$script->setMeta(array('graphName' => $graph_name));

$message = new \Rexpro\Message();
$message->setMessageBody($script);
$client->send($message);

$response = $client->getResponse();
$results = $response->getMessageBody();

echo(get_class($results)); // \Rexpro\Message\Body\Response\Script
var_dump($results->getResults()); // See Below
/*
array(1) {
  [0] =>
  array(3) {
    '_type' =>
    string(6) "vertex"
    '_id' =>
    string(6) "440676"
    '_properties' =>
    array(1) {
      'name' =>
      string(20) "engineering"
    }
  }
}
*/

var_dump($results->toArray()); // See Below
/*
array(5) {
  'session' =>
  string(36) "00000000-0000-0000-0000-000000000000"
  'request' =>
  string(36) "e66b643a-5b90-4ca6-b7bf-d5ee52ddeb62"
  'meta' =>
  array(0) {
  }
  'results' =>
  array(1) {
    [0] =>
    array(3) {
      '_type' =>
      string(6) "vertex"
      '_id' =>
      string(6) "440676"
      '_properties' =>
      array(1) {
        'name' =>
        string(20) "engineering"
      }
    }
  }
  'bindings' =>
  array(0) {
  }
}
*/

Contributing

• Install Zephir http://zephir-lang.com/install.html
• Edit files in rexpro directory
• Put in Pull Request

Todo

• Add Tests
• Add TinkerPop3 Support
• Improve Documentation
• Get PECL support