floriansemm/solr-bundle

Symfony2 Solr integration bundle

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Language: PHP

1.3.1 2015-07-27 18:55 UTC

README

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Introduction

This Bundle provides a simple API to index and query a Solr Index.

And do not forget to join the Gitter chat join the chat at https://gitter.im/floriansemm/SolrBundle

Installation

Installation is a quick (I promise!) 3 step process:

  1. Download SolrBundle
  2. Enable the Bundle
  3. Configure the SolrBundle

Step 1: Download SolrBundle

This bundle is available on Packagist. You can install it using Composer:

$ composer require floriansemm/solr-bundle

Step 2: Enable the bundle

Finally, enable the bundle in the kernel

<?php
// app/AppKernel.php

public function registerBundles()
{
    $bundles = array(
        // ...
        new FS\SolrBundle\FSSolrBundle(),
    );
}

Step 3: Configure the SolrBundle

# app/config/config.yml
fs_solr:
    endpoints:
        core1:
            host: host
            port: 8983
            path: /solr/core1
            core: corename
            timeout: 5
        core2:
            host: host
            port: 8983
            path: /solr/core2
            core: corename
            timeout: 5

With this config you can setup two cores: core1 and core2. See section Specify cores for more information.

Usage

Annotations

To put an entity to the index, you must add some annotations to your entity:

// your Entity

// ....
use FS\SolrBundle\Doctrine\Annotation as Solr;

/**
* @Solr\Document(repository="Full\Qualified\Class\Name")
* @ORM\Table()
*/
class Post
{
    /**
     * @Solr\Id
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */

    private $id;
    /**
     *
     * @Solr\Field(type="string")
     *
     * @ORM\Column(name="title", type="string", length=255)
     */
    private $title = '';

    /**
     * 
     * @Solr\Field(type="string")
     *
     * @ORM\Column(name="text", type="text")
     */
    private $text = '';

   /**
    * @Solr\Field(type="date")
    *
    * @ORM\Column(name="created_at", type="datetime")
    */
    private $created_at = null;
}

Supported field types

Currently is a basic set of types implemented.

  • string
  • text
  • date
  • integer
  • float
  • double
  • long
  • boolean

It is possible to use custom field types (schema.xml).

Filter annotation

In some cases a entity should not be index. For this you have the SynchronizationFilter Annotation.

/**
 * @Solr\Document
 * @Solr\SynchronizationFilter(callback="shouldBeIndex")
 */
class SomeEntity
{
    /**
     * @return boolean
    */
    public function shouldBeIndex()
    {
        // put your logic here
    }
}

The callback property specifies an callable function, which decides whether the should index or not.

Specify cores

It is possible to specify a core dedicated to a document

/**
 * @Solr\Document(index="core0")
 */
class SomeEntity
{
    // ...
}

All documents will be indexed in the core core0. If your entities/document have different languages then you can setup a callback method, which returns the preferred core for the entity.

/**
 * @Solr\Document(indexHandler="indexHandler")
 */
class SomeEntity
{
    public function indexHandler()
    {
        if ($this->language == 'en') {
            return 'core0';
        }
    }
}

Each core must setup up in the config.yml under endpoints. If you leave the index or indexHandler property empty, then a default core will be used (first in the endpoints list). To index a document in all cores use * as index value:

@Solr\Document(index="*")

Solr field configuration

Solr comes with a set of predefined field-name/field-types mapping:

  • title (solr-type: general_text)
  • text (solr-type: general_text)
  • category (solr-type: general_text)
  • content_type (solr-type: string)

For details have a look into your schema.xml.

So if you have an entity with a property "category", then you don't need a type-declaration in the annotation:

/**
 * @Solr\Field
 * @ORM\Column(name="category", type="text")
 */
private $category = '';

The field has in this case automaticaly the type "general_text".

If you persist this entity, it will put automatically to the index. Update and delete happens automatically too.

Query a field of a document

To query the index you have to call some services.

$query = $this->get('solr.client')->createQuery('AcmeDemoBundle:Post');
$query->addSearchTerm('title', 'my title');

$result = $query->getResult();

The $result array contains all found entities. The solr-service does all mappings from SolrDocument to your entity for you.

Query all fields of a document

The pervious examples have queried only the field 'title'. You can also query all fields with a string.

$query = $this->get('solr.client')->createQuery('AcmeDemoBundle:Post');
$query->queryAllFields('my title');

$result = $query->getResult();

Define Result-Mapping

To narrow the mapping, you can use the addField() method.

$query = $this->get('solr.client')->createQuery('AcmeDemoBundle:Post');
$query->addSearchTerm('title', 'my title');
$query->addField('id');
$query->addField('text');

$result = $query->getResult();

In this case only the fields id and text will be mapped (addField()), so title and created_at will be empty. If nothing was found $result is empty.

The result contains by default 10 rows. You can increase this value:

$query->setRows(1000000);

Configure HydrationModes

HydrationMode tells the Bundle how to create an entity from a document.

  1. FS\SolrBundle\Doctrine\Hydration\HydrationModes::HYDRATE_INDEX - use only the data from solr
  2. FS\SolrBundle\Doctrine\Hydration\HydrationModes::HYDRATE_DOCTRINE - merge the data from solr with the entire doctrine-entity

With a custom query:

$query = $this->get('solr.client')->createQuery('AcmeDemoBundle:Post');
$query->setHydrationMode($mode)

With a custom document-repository you have to set the property $hydrationMode itself:

public function find($id)
{
    $this->hydrationMode = HydrationModes::HYDRATE_INDEX;

    return parent::find($id);
}

Index manually an entity

To index your entities manually, you can do it the following way:

$this->get('solr.client')->addDocument($entity);
$this->get('solr.client')->updateDocument($entity);
$this->get('solr.client')->removeDocument($entity);

removeDocument() requires that the entity-id is set.

Use document repositories

If you specify your own repository you must extend the FS\SolrBundle\Repository\Repository class. The usage is the same like Doctrine-Repositories:

$myRepository = $this->get('solr.client')->getRepository('AcmeDemoBundle:Post');
$result = $myRepository->mySpecialFindMethod();

If you haven't declared a concrete repository in your entity and you calling $this->get('solr.client')->getRepository('AcmeDemoBundle:Post'), you will get an instance of FS\SolrBundle\Repository\Repository.

Commands

There are two commands with this bundle:

  • solr:index:clear - delete all documents in the index
  • solr:synchronize - synchronize the db with the index