brightzone/rexpro-php

There is no license information available for the latest version (dev-master) of this package.

rexpro client for php

dev-master 2015-09-05 19:19 UTC

This package is not auto-updated.

Last update: 2020-01-10 15:33:37 UTC


README

Please note that the current version of TinkerPop (TP) is TP3. You can find a driver for that version here. If you are already running a TP2 project and want a driver for that version then read on.

This is a rexpro client for PHP. It's main purpose was for it to be integrated into frameworks, and therefore it will fail silently and not throw any exceptions. See Error handling section

Installation

MsgPack (optional)

rexpro-php does not require MsgPack anymore as it can also serialize using json. If you wish you can still use it though: MsgPack .

Install MsgPack from PEAR:

sudo pecl install msgpack-beta
sudo sh -c 'echo "extension=msgpack.so" > /etc/php5/mods-available/msgpack.ini'
sudo php5enmod msgpack

PHP Rexster Client

For TP3 and a Gremlin-Server version of this client go here :

https://github.com/PommeVerte/gremlin-php

For Rexster 2.4+

Prefered method is trough composer. Add the following to your composer.json file:

{
    "repositories": [
        {
            "type": "git",
            "url": "https://github.com/PommeVerte/rexpro-php.git"
        }
    ],
    "require": {
        "brightzone/rexpro": "master"
    }
}

If you just want to pull and use the library do:

git clone https://github.com/PommeVerte/rexpro-php.git
cd rexpro-php
composer install --no-dev # required to set autoload files
For Rexster 2.3

Prefered method is through composer. Add the following to your composer.json file:

{
    "repositories": [
        {
            "type": "git",
            "url": "https://github.com/PommeVerte/rexpro-php.git"
        }
    ],
    "require": {
        "brightzone/rexpro": "2.3"
    }
}

If you just want to pull and use the library do:

git clone https://github.com/PommeVerte/rexpro-php.git -b 2.3
cd rexpro-php
composer install --no-dev # required to set autoload files

Error Handling

The PHP Client does not throw Exceptions. It was built with the goal of being wrapped into a PHP framework and therefore fails silently (you can still get errors by checking method return values).

For instance:

if($db->open('localhost:8184','tinkergraph',null,null) === false)
  throw new Exception($db->error->code . ' : ' . $db->error->description);
$db->script = 'g.v(2)';
$result = $db->runScript();
if($result === false)
   throw new Exception($db->error->code . ' : ' . $db->error->description);
//do something with result

Namespace

The Connection class exists within the rexpro namespace. This means that you have to do either of the two following:

require_once 'rexpro-php/src/Connection.php';
use \brightzone\rexpro\Connection;
 
$db = new Connection;

Or

require_once 'rexpro-php/src/Connection.php';

$db = new \brightzone\rexpro\Connection;

Serializer

rexpro-php will use the pecl msgpack extention by default. But if it isn't installed on the system it will automatically revert to using JSON.

If you wish to force a specific serializer type you may do so like this:

$db = new Connection;
echo $db->getSerializer(); // will echo 'MSGPACK'
$db->setSerializer(Messages::SERIALIZER_JSON);
echo $db->getSerializer(); // will echo 'JSON'
// do something with $db Connection Object.

Examples

You can find more information by reading the API in the wiki.

Here are a few basic usages.

Example 1:

$db = new Connection;
//you can set $db->timeout = 0.5; if you wish
$db->open('localhost:8184','tinkergraph',null,null);
$db->script = 'g.v(2)';
$result = $db->runScript();
//do something with result
$db->close();

Example 2 (with bindings):

$db = new Connection;
$db->open('localhost:8184','tinkergraph','username','password');

$db->script = 'g.v(CUSTO_BINDING)';
$db->bindValue('CUSTO_BINDING',2);
$result = $db->runScript();
//do something with result
$db->close();

Example 3 (sessionless):

$db = new Connection;
$db->open('localhost:8184');
$db->script = 'g.v(2).map()';
$db->graph = 'tinkergraph'; //need to provide graph
$result = $db->runScript(false);
//do something with result
$b->close();

Example 4 (transaction):

$db = new Connection;
$db->open('localhost:8184','neo4jsample',null,null);
  	
$db->transactionStart();

$db->script = 'g.addVertex([name:"michael"])';
$result = $db->runScript();
$db->script = 'g.addVertex([name:"john"])';
$result = $db->runScript();

$db->transactionStop(true);//accept commit of changes. set to false if you wish to cancel changes
$db->close();

Unit testing

If your test rexster server uses credentials for loging in you will need to run the following to set up proper credentials for tests:

DBUSER=<username> DBPASS=<password> phpunit src/tests/

Using env variables allows us to pass these arguments to a CI environment if needed.