diff --git a/config/schema/facets.facetsource.schema.yml b/config/schema/facets.facetsource.schema.yml
index 962703e..8cf0e35 100644
--- a/config/schema/facets.facetsource.schema.yml
+++ b/config/schema/facets.facetsource.schema.yml
@@ -14,3 +14,6 @@ facets.facet_source.*:
     filterKey:
       type: string
       label: 'Filter key'
+    url_processor:
+      type: string
+      label: 'Url processor'
diff --git a/facets.services.yml b/facets.services.yml
index c33a611..01d4ee8 100644
--- a/facets.services.yml
+++ b/facets.services.yml
@@ -11,6 +11,9 @@ services:
   plugin.manager.facets.processor:
     class: Drupal\facets\Processor\ProcessorPluginManager
     arguments: ['@container.namespaces', '@cache.discovery', '@module_handler', '@string_translation']
+  plugin.manager.facets.url_processor:
+    class: Drupal\facets\UrlProcessor\UrlProcessorPluginManager
+    parent: default_plugin_manager
   facets.manager:
     class: Drupal\facets\FacetManager\DefaultFacetManager
     arguments:
diff --git a/src/Annotation/FacetsUrlProcessor.php b/src/Annotation/FacetsUrlProcessor.php
new file mode 100644
index 0000000..1075384
--- /dev/null
+++ b/src/Annotation/FacetsUrlProcessor.php
@@ -0,0 +1,48 @@
+<?php
+/**
+ * @file
+ * Contains \Drupal\facets\Annotation\FacetsProcessor.
+ */
+
+namespace Drupal\facets\Annotation;
+
+use Drupal\Component\Annotation\Plugin;
+
+/**
+ * Defines a Facets URL Processor annotation.
+ *
+ * @see \Drupal\facets\Processor\ProcessorPluginManager
+ * @see plugin_api
+ *
+ * @ingroup plugin_api
+ *
+ * @Annotation
+ */
+class FacetsUrlProcessor extends Plugin {
+
+  /**
+   * The URL processor plugin id.
+   *
+   * @var string
+   */
+  public $id;
+
+  /**
+   * The human-readable name of the URL processor plugin.
+   *
+   * @ingroup plugin_translatable
+   *
+   * @var \Drupal\Core\Annotation\Translation
+   */
+  public $label;
+
+  /**
+   * The URL processor description.
+   *
+   * @ingroup plugin_translatable
+   *
+   * @var \Drupal\Core\Annotation\Translation
+   */
+  public $description;
+
+}
diff --git a/src/Entity/FacetSource.php b/src/Entity/FacetSource.php
index 3d3f7ad..910521b 100644
--- a/src/Entity/FacetSource.php
+++ b/src/Entity/FacetSource.php
@@ -9,6 +9,7 @@ namespace Drupal\facets\Entity;
 
 use Drupal\Core\Config\Entity\ConfigEntityBase;
 use Drupal\facets\FacetSourceInterface;
+use Drupal\facets\UrlProcessor\UrlProcessorInterface;
 
 /**
  * Defines the facet source configuration entity.
@@ -36,7 +37,8 @@ use Drupal\facets\FacetSourceInterface;
  *   config_export = {
  *     "id",
  *     "name",
- *     "filterKey"
+ *     "filterKey",
+ *     "urlProcessor"
  *   },
  *   links = {
  *     "canonical" = "/admin/config/search/facets/facet-sources/",
@@ -68,6 +70,20 @@ class FacetSource extends ConfigEntityBase implements FacetSourceInterface {
   protected $filterKey;
 
   /**
+   * The url processor name.
+   *
+   * @var string
+   */
+  protected $urlProcessor = 'query_string';
+
+  /**
+   * The url processor instance.
+   *
+   * @var \Drupal\facets\UrlProcessor\UrlProcessorInterface
+   */
+  protected $urlProcessorInstance = NULL;
+
+  /**
    * {@inheritdoc}
    */
   public function id() {
@@ -95,4 +111,35 @@ class FacetSource extends ConfigEntityBase implements FacetSourceInterface {
     return $this->filterKey;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function setUrlProcessor($processor_name) {
+    $this->urlProcessor = $processor_name;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getUrlProcessor() {
+
+    // If the instance is already loaded, don't bother trying to reload it, just
+    // return it.
+    if ($this->urlProcessorInstance instanceof UrlProcessorInterface) {
+      return $this->urlProcessorInstance;
+    }
+
+    $manager = \Drupal::getContainer()->get('plugin.manager.facets.url_processor');
+    $this->urlProcessorInstance = $manager->createInstance($this->urlProcessor);
+
+    return $this->urlProcessorInstance;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getUrlProcessorName() {
+    return $this->urlProcessor;
+  }
+
 }
diff --git a/src/FacetSourceInterface.php b/src/FacetSourceInterface.php
index 8395760..a02cac8 100644
--- a/src/FacetSourceInterface.php
+++ b/src/FacetSourceInterface.php
@@ -38,4 +38,28 @@ interface FacetSourceInterface extends ConfigEntityInterface {
    */
   public function setFilterKey($filter_key);
 
+  /**
+   * Set the processor name to be used.
+   *
+   * @param string $processor_name
+   *   Plugin name of the url processor.
+   */
+  public function setUrlProcessor($processor_name);
+
+  /**
+   * Returns an instance of the url processor.
+   *
+   * @return \Drupal\facets\UrlProcessor\UrlProcessorInterface
+   *   The url processor to be used.
+   */
+  public function getUrlProcessor();
+
+  /**
+   * Returns a string version of the url processor.
+   *
+   * @return string
+   *   The url processor to be used as a string.
+   */
+  public function getUrlProcessorName();
+
 }
diff --git a/src/Form/FacetSourceEditForm.php b/src/Form/FacetSourceEditForm.php
index 067a39f..1eaba54 100644
--- a/src/Form/FacetSourceEditForm.php
+++ b/src/Form/FacetSourceEditForm.php
@@ -8,8 +8,11 @@
 namespace Drupal\facets\Form;
 
 use Drupal\Core\Entity\EntityForm;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\facets\Entity\FacetSource;
+use Drupal\facets\UrlProcessor\UrlProcessorPluginManager;
+use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
  * Provides a form for editing facet sources.
@@ -20,10 +23,32 @@ use Drupal\facets\Entity\FacetSource;
 class FacetSourceEditForm extends EntityForm {
 
   /**
+   * The plugin manager for URL Processors.
+   *
+   * @var \Drupal\facets\UrlProcessor\UrlProcessorPluginManager
+   */
+  protected $urlProcessorPluginManager;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    /** @var \Drupal\Core\Entity\EntityTypeManagerInterface $etm */
+    $etm = $container->get('entity_type.manager');
+
+    /** @var \Drupal\facets\UrlProcessor\UrlProcessorPluginManager $uppm */
+    $uppm = $container->get('plugin.manager.facets.url_processor');
+
+    return new static($etm, $uppm);
+  }
+
+  /**
    * Constructs a FacetSourceEditForm.
    */
-  public function __construct() {
-    $facet_source_storage = \Drupal::entityTypeManager()->getStorage('facets_facet_source');
+  public function __construct(EntityTypeManagerInterface $entity_type_manager, UrlProcessorPluginManager $url_processor_plugin_manager) {
+    $facet_source_storage = $entity_type_manager->getStorage('facets_facet_source');
+
+    $this->urlProcessorPluginManager = $url_processor_plugin_manager;
 
     // Make sure we remove colons from the source id, those are disallowed in
     // the entity id.
@@ -81,6 +106,17 @@ class FacetSourceEditForm extends EntityForm {
       ),
     ];
 
+    $url_processors = array();
+    foreach ($this->urlProcessorPluginManager->getDefinitions() as $definition) {
+      $url_processors[$definition['id']] = $definition['label'];
+    }
+    $form['urlProcessor'] = [
+      '#type' => 'select',
+      '#title' => $this->t('URL Processor'),
+      '#options' => $url_processors,
+      '#default_value' => $facet_source->getUrlProcessorName(),
+    ];
+
     // The parent's form build method will add a save button.
     return parent::buildForm($form, $form_state);
   }
diff --git a/src/Plugin/facets/processor/QueryStringUrlProcessor.php b/src/Plugin/facets/processor/QueryStringUrlProcessor.php
deleted file mode 100644
index 3c53a32..0000000
--- a/src/Plugin/facets/processor/QueryStringUrlProcessor.php
+++ /dev/null
@@ -1,148 +0,0 @@
-<?php
-
-/**
- * @file
- * Contains Drupal\facets\Plugin\facets\url_processor\UrlProcessorQueryString.
- */
-
-namespace Drupal\facets\Plugin\facets\processor;
-
-use Drupal\Core\Url;
-use Drupal\facets\FacetInterface;
-use Drupal\facets\Processor\UrlProcessorPluginBase;
-use Symfony\Component\HttpFoundation\Request;
-
-/**
- * The basic url processor, uses query strings.
- *
- * @FacetsProcessor(
- *   id = "query_string",
- *   label = @Translation("Query string url processor"),
- *   description = @Translation("Most simple url processor which uses the query sting."),
- *   stages = {
- *     "pre_query" = 50,
- *     "build" = 15,
- *   },
- *   locked = true
- * )
- */
-class QueryStringUrlProcessor extends UrlProcessorPluginBase {
-
-  /**
-   * A string that separates the filters in the query string.
-   */
-  const SEPARATOR = ':';
-
-  /**
-   * A string of how to represent the facet in the url.
-   *
-   * @var string
-   */
-  protected $url_alias;
-
-  /**
-   * An array of active filters.
-   *
-   * @var string[]
-   *   An array containing the active filters
-   */
-  protected $activeFilters = [];
-
-  /**
-   * {@inheritdoc}
-   */
-  public function __construct(array $configuration, $plugin_id, $plugin_definition, Request $request) {
-    parent::__construct($configuration, $plugin_id, $plugin_definition, $request);
-    $this->initializeActiveFilters();
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function build(FacetInterface $facet, array $results) {
-    // Create links for all the values.
-    // First get the current list of get parameters.
-    $get_params = $this->request->query;
-
-    // Set the url alias from the the facet object.
-    $this->url_alias = $facet->getUrlAlias();
-
-    // No results are found for this facet, so don't try to create urls.
-    if (empty($results)) {
-      return [];
-    }
-
-    /** @var \Drupal\facets\Result\ResultInterface $result */
-    foreach ($results as &$result) {
-      $filter_string = $this->url_alias . ':' . $result->getRawValue();
-      $result_get_params = clone $get_params;
-
-      $filter_params = $result_get_params->get($this->filterKey, [], TRUE);
-      // If the value is active, remove the filter string from the parameters.
-      if ($result->isActive()) {
-        foreach ($filter_params as $key => $filter_param) {
-          if ($filter_param == $filter_string) {
-            unset($filter_params[$key]);
-          }
-        }
-      }
-      // If the value is not active, add the filter string.
-      else {
-        $filter_params[] = $filter_string;
-      }
-
-      $result_get_params->set($this->filterKey, $filter_params);
-      $request = $this->request;
-      if ($facet->getFacetSource()->getPath()) {
-        $request = Request::create('/' . $facet->getFacetSource()->getPath());
-      }
-      $url = Url::createFromRequest($request);
-      $url->setOption('query', $result_get_params->all());
-
-      $result->setUrl($url);
-    }
-
-    return $results;
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function preQuery(FacetInterface $facet) {
-    // Set the url alias from the the facet object.
-    $this->url_alias = $facet->getUrlAlias();
-
-    // Get the filter key of the facet.
-    if (isset($this->activeFilters[$this->url_alias])) {
-      foreach ($this->activeFilters[$this->url_alias] as $value) {
-        $facet->setActiveItem(trim($value, '"'));
-      }
-    }
-  }
-
-  /**
-   * Initialize the active filters.
-   *
-   * Get all the filters that are active. This method only get's all the
-   * filters but doesn't assign them to facets. In the processFacet method the
-   * active values for a specific facet are added to the facet.
-   */
-  protected function initializeActiveFilters() {
-    $url_parameters = $this->request->query;
-
-    // Get the active facet parameters.
-    $active_params = $url_parameters->get($this->filterKey, array(), TRUE);
-
-    // Explode the active params on the separator.
-    foreach ($active_params as $param) {
-      list($key, $value) = explode(self::SEPARATOR, $param);
-      if (!isset($this->activeFilters[$key])) {
-        $this->activeFilters[$key] = [$value];
-      }
-      else {
-        $this->activeFilters[$key][] = $value;
-      }
-    }
-  }
-
-}
diff --git a/src/Plugin/facets/processor/UrlProcessorHandler.php b/src/Plugin/facets/processor/UrlProcessorHandler.php
new file mode 100644
index 0000000..aa653fd
--- /dev/null
+++ b/src/Plugin/facets/processor/UrlProcessorHandler.php
@@ -0,0 +1,72 @@
+<?php
+
+/**
+ * @file
+ * Contains Drupal\facets\Plugin\facets\processor\UrlProcessorHandler.
+ */
+
+namespace Drupal\facets\Plugin\facets\processor;
+
+use Drupal\facets\Exception\InvalidProcessorException;
+use Drupal\facets\FacetInterface;
+use Drupal\facets\Processor\BuildProcessorInterface;
+use Drupal\facets\Processor\PreQueryProcessorInterface;
+use Drupal\facets\Processor\ProcessorPluginBase;
+
+/**
+ * The URL processor, delegates all of it's work to an actual url processor.
+ *
+ * Because we need to be able to decide where in the facet the urlProcessor
+ * should be triggered there needs to be an actual processor. This farms out all
+ * the work it does to the actual @FacetsUrlProcessor.
+ *
+ * @FacetsProcessor(
+ *   id = "url_processor_handler",
+ *   label = @Translation("URL processor handler"),
+ *   description = @Translation("A processor that holds the other url processors (that can be set per facet source)."),
+ *   stages = {
+ *     "pre_query" = 50,
+ *     "build" = 15,
+ *   },
+ *   locked = true
+ * )
+ */
+class UrlProcessorHandler extends ProcessorPluginBase implements BuildProcessorInterface, PreQueryProcessorInterface{
+
+  /** @var \Drupal\facets\UrlProcessor\UrlProcessorInterface */
+  protected $processor;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __construct(array $configuration, $plugin_id, array $plugin_definition) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+
+    if (!isset($configuration['facet'])) {
+      throw new InvalidProcessorException("The UrlProcessorHandler doesn't have the required 'facet' in the configuration array.");
+    }
+
+    /** @var \Drupal\facets\FacetInterface $facet */
+    $facet = $configuration['facet'];
+
+    /** @var \Drupal\facets\FacetSourceInterface $fs */
+    $fs = $facet->getFacetSourceConfig();
+
+    $this->processor = $fs->getUrlProcessor();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function build(FacetInterface $facet, array $results) {
+    $this->processor->buildUrls($facet, $results);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function preQuery(FacetInterface $facet) {
+    $this->processor->setActiveItems($facet);
+  }
+
+}
diff --git a/src/Plugin/facets/url_processor/QueryString.php b/src/Plugin/facets/url_processor/QueryString.php
new file mode 100644
index 0000000..346b294
--- /dev/null
+++ b/src/Plugin/facets/url_processor/QueryString.php
@@ -0,0 +1,143 @@
+<?php
+
+/**
+ * @file
+ * Contains Drupal\facets\Plugin\facets\url_processor\QueryString.
+ */
+
+namespace Drupal\facets\Plugin\facets\url_processor;
+
+use Drupal\Core\Url;
+use Drupal\facets\FacetInterface;
+use Drupal\facets\UrlProcessor\UrlProcessorPluginBase;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Query string URL processor.
+ *
+ * @FacetsUrlProcessor(
+ *   id = "query_string",
+ *   label = @Translation("Query string url processor"),
+ *   description = @Translation("Most simple url processor which uses the query sting.")
+ * )
+ */
+class QueryString extends UrlProcessorPluginBase {
+
+  /**
+   * A string that separates the filters in the query string.
+   */
+  const SEPARATOR = ':';
+
+  /**
+   * A string of how to represent the facet in the url.
+   *
+   * @var string
+   */
+  protected $url_alias;
+
+  /**
+   * An array of active filters.
+   *
+   * @var string[]
+   *   An array containing the active filters
+   */
+  protected $activeFilters = [];
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, Request $request) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition, $request);
+    $this->initializeActiveFilters();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildUrls(FacetInterface $facet, array $results) {
+    // Create links for all the values.
+    // First get the current list of get parameters.
+    $get_params = $this->request->query;
+
+    // Set the url alias from the the facet object.
+    $this->url_alias = $facet->getUrlAlias();
+
+    // No results are found for this facet, so don't try to create urls.
+    if (empty($results)) {
+      return [];
+    }
+
+    /** @var \Drupal\facets\Result\ResultInterface $result */
+    foreach ($results as &$result) {
+      $filter_string = $this->url_alias . ':' . $result->getRawValue();
+      $result_get_params = clone $get_params;
+
+      $filter_params = $result_get_params->get($this->filterKey, [], TRUE);
+      // If the value is active, remove the filter string from the parameters.
+      if ($result->isActive()) {
+        foreach ($filter_params as $key => $filter_param) {
+          if ($filter_param == $filter_string) {
+            unset($filter_params[$key]);
+          }
+        }
+      }
+      // If the value is not active, add the filter string.
+      else {
+        $filter_params[] = $filter_string;
+      }
+
+      $result_get_params->set($this->filterKey, $filter_params);
+      $request = $this->request;
+      if ($facet->getFacetSource()->getPath()) {
+        $request = Request::create('/' . $facet->getFacetSource()->getPath());
+      }
+      $url = Url::createFromRequest($request);
+      $url->setOption('query', $result_get_params->all());
+
+      $result->setUrl($url);
+    }
+
+    return $results;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setActiveItems(FacetInterface $facet) {
+    // Set the url alias from the the facet object.
+    $this->url_alias = $facet->getUrlAlias();
+
+    // Get the filter key of the facet.
+    if (isset($this->activeFilters[$this->url_alias])) {
+      foreach ($this->activeFilters[$this->url_alias] as $value) {
+        $facet->setActiveItem(trim($value, '"'));
+      }
+    }
+  }
+
+  /**
+   * Initialize the active filters.
+   *
+   * Get all the filters that are active. This method only get's all the
+   * filters but doesn't assign them to facets. In the processFacet method the
+   * active values for a specific facet are added to the facet.
+   */
+  protected function initializeActiveFilters() {
+    $url_parameters = $this->request->query;
+
+    // Get the active facet parameters.
+    $active_params = $url_parameters->get($this->filterKey, array(), TRUE);
+
+    // Explode the active params on the separator.
+    foreach ($active_params as $param) {
+      list($key, $value) = explode(self::SEPARATOR, $param);
+      if (!isset($this->activeFilters[$key])) {
+        $this->activeFilters[$key] = [$value];
+      }
+      else {
+        $this->activeFilters[$key][] = $value;
+      }
+    }
+  }
+
+}
diff --git a/src/Processor/UrlProcessorInterface.php b/src/Processor/UrlProcessorInterface.php
deleted file mode 100644
index 31aeb9c..0000000
--- a/src/Processor/UrlProcessorInterface.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-/**
- * @file
- * Contains Drupal\facets\Processor\UrlProcessorInterface.
- */
-
-namespace Drupal\facets\Processor;
-
-/**
- * Interface UrlProcessorInterface.
- *
- * The url processor takes care of retrieving facet information from the url.
- * It also handles the generation of facet links. This extends the pre query and
- * build processor interfaces, those methods are where the bulk of the work
- * should be done.
- *
- * The facet manager has one url processor.
- *
- * @package Drupal\facets\UrlProcessor
- */
-interface UrlProcessorInterface extends PreQueryProcessorInterface, BuildProcessorInterface {
-
-  /**
-   * Returns the filter key.
-   *
-   * @return string
-   *   A string containing the filter key.
-   */
-  public function getFilterKey();
-
-}
diff --git a/src/Processor/UrlProcessorPluginBase.php b/src/Processor/UrlProcessorPluginBase.php
deleted file mode 100644
index 99d5875..0000000
--- a/src/Processor/UrlProcessorPluginBase.php
+++ /dev/null
@@ -1,80 +0,0 @@
-<?php
-/**
- * @file
- * Contains Drupal\facets\Processor\UrlProcessorPluginBase.
- */
-
-namespace Drupal\facets\Processor;
-
-use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
-use Drupal\facets\Exception\InvalidProcessorException;
-use Symfony\Component\DependencyInjection\ContainerInterface;
-use Symfony\Component\HttpFoundation\Request;
-
-/**
- * A base class for plugins that implements most of the boilerplate.
- */
-abstract class UrlProcessorPluginBase extends ProcessorPluginBase implements UrlProcessorInterface, ContainerFactoryPluginInterface {
-
-  /**
-   * The query string variable.
-   *
-   * @var string
-   *   The query string variable that holds all the facet information.
-   */
-  protected $filterKey = 'f';
-
-  /**
-   * The current request object.
-   *
-   * @var Request
-   *  The current request object.
-   */
-  protected $request;
-
-  /**
-   * {@inheritdoc}
-   */
-  public function getFilterKey() {
-    return $this->filterKey;
-  }
-
-  /**
-   * Constructs a new instance of the class.
-   *
-   * @param array $configuration
-   *   A configuration array containing information about the plugin instance.
-   * @param string $plugin_id
-   *   The plugin_id for the plugin instance.
-   * @param mixed $plugin_definition
-   *   The plugin implementation definition.
-   * @param \Symfony\Component\HttpFoundation\Request $request
-   *   A request object for the current request.
-   */
-  public function __construct(array $configuration, $plugin_id, $plugin_definition, Request $request) {
-    parent::__construct($configuration, $plugin_id, $plugin_definition);
-    $this->request = $request;
-
-    if (!isset($configuration['facet'])) {
-      throw new InvalidProcessorException();
-    }
-
-    /** @var \Drupal\facets\FacetInterface $facet */
-    $facet = $configuration['facet'];
-
-    /** @var \Drupal\facets\FacetSourceInterface $facet_source_config */
-    $facet_source_config = $facet->getFacetSourceConfig();
-
-    $this->filterKey = $facet_source_config->getFilterKey() ?: 'f';
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
-    /** @var Request $request */
-    $request = $container->get('request_stack')->getCurrentRequest();
-    return new static($configuration, $plugin_id, $plugin_definition, $request);
-  }
-
-}
diff --git a/src/Tests/FacetSourceTest.php b/src/Tests/FacetSourceTest.php
index 3beef1d..92d179e 100644
--- a/src/Tests/FacetSourceTest.php
+++ b/src/Tests/FacetSourceTest.php
@@ -29,11 +29,17 @@ class FacetSourceTest extends FacetWebTestBase {
     $this->clickLink($this->t('Configure'));
 
     // Test the edit page.
+    $edit = array(
+      'filterKey' => 'fq',
+      'urlProcessor' => 'query_string',
+    );
     $this->assertField('filterKey');
-    $this->drupalPostForm(NULL, array('filterKey' => 'fq'), $this->t('Save'));
+    $this->assertField('urlProcessor');
+    $this->drupalPostForm(NULL, $edit, $this->t('Save'));
 
     // Test that saving worked.
     $this->assertField('filterKey');
+    $this->assertField('urlProcessor');
     $this->assertRaw('fq');
   }
 
diff --git a/src/UrlProcessor/UrlProcessorInterface.php b/src/UrlProcessor/UrlProcessorInterface.php
new file mode 100644
index 0000000..e040db4
--- /dev/null
+++ b/src/UrlProcessor/UrlProcessorInterface.php
@@ -0,0 +1,37 @@
+<?php
+/**
+ * @file
+ * Contains Drupal\facets\UrlProcessor\UrlProcessorInterface.
+ */
+
+namespace Drupal\facets\UrlProcessor;
+
+use Drupal\facets\FacetInterface;
+
+/**
+ * Interface UrlProcessorInterface.
+ *
+ * The url processor takes care of retrieving facet information from the url.
+ * It also handles the generation of facet links. This extends the pre query and
+ * build processor interfaces, those methods are where the bulk of the work
+ * should be done.
+ *
+ * The facet manager has one url processor.
+ *
+ * @package Drupal\facets\UrlProcessor
+ */
+interface UrlProcessorInterface {
+
+  public function buildUrls(FacetInterface $facet, array $results);
+
+  public function setActiveItems(FacetInterface $facet);
+
+  /**
+   * Returns the filter key.
+   *
+   * @return string
+   *   A string containing the filter key.
+   */
+  public function getFilterKey();
+
+}
diff --git a/src/UrlProcessor/UrlProcessorPluginBase.php b/src/UrlProcessor/UrlProcessorPluginBase.php
new file mode 100644
index 0000000..f42d235
--- /dev/null
+++ b/src/UrlProcessor/UrlProcessorPluginBase.php
@@ -0,0 +1,81 @@
+<?php
+/**
+ * @file
+ * Contains Drupal\facets\UrlProcessor\UrlProcessorPluginBase.
+ */
+
+namespace Drupal\facets\UrlProcessor;
+
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\facets\Exception\InvalidProcessorException;
+use Drupal\facets\Processor\ProcessorPluginBase;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * A base class for plugins that implements most of the boilerplate.
+ */
+abstract class UrlProcessorPluginBase extends ProcessorPluginBase implements UrlProcessorInterface, ContainerFactoryPluginInterface {
+
+  /**
+   * The query string variable.
+   *
+   * @var string
+   *   The query string variable that holds all the facet information.
+   */
+  protected $filterKey = 'f';
+
+  /**
+   * The current request object.
+   *
+   * @var Request
+   *  The current request object.
+   */
+  protected $request;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFilterKey() {
+    return $this->filterKey;
+  }
+
+  /**
+   * Constructs a new instance of the class.
+   *
+   * @param array $configuration
+   *   A configuration array containing information about the plugin instance.
+   * @param string $plugin_id
+   *   The plugin_id for the plugin instance.
+   * @param mixed $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Symfony\Component\HttpFoundation\Request $request
+   *   A request object for the current request.
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, Request $request) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+    $this->request = $request;
+
+    if (!isset($configuration['facet'])) {
+      throw new InvalidProcessorException("The url processor doesn't have the required 'facet' in the configuration array.");
+    }
+
+    /** @var \Drupal\facets\FacetInterface $facet */
+    $facet = $configuration['facet'];
+
+    /** @var \Drupal\facets\FacetSourceInterface $facet_source_config */
+    $facet_source_config = $facet->getFacetSourceConfig();
+
+    $this->filterKey = $facet_source_config->getFilterKey() ?: 'f';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    /** @var Request $request */
+    $request = $container->get('request_stack')->getCurrentRequest();
+    return new static($configuration, $plugin_id, $plugin_definition, $request);
+  }
+
+}
diff --git a/src/UrlProcessor/UrlProcessorPluginManager.php b/src/UrlProcessor/UrlProcessorPluginManager.php
new file mode 100644
index 0000000..d3f3dcf
--- /dev/null
+++ b/src/UrlProcessor/UrlProcessorPluginManager.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\facets\Processor\UrlProcessorPluginManager.
+ */
+
+namespace Drupal\facets\UrlProcessor;
+
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\Core\StringTranslation\TranslationInterface;
+
+/**
+ * Manages URL processor plugins.
+ *
+ * @see \Drupal\facets\Annotation\FacetsProcessor
+ * @see \Drupal\facets\Processor\ProcessorInterface
+ * @see \Drupal\facets\Processor\ProcessorPluginBase
+ * @see plugin_api
+ */
+class UrlProcessorPluginManager extends DefaultPluginManager {
+
+  use StringTranslationTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
+    parent::__construct('Plugin/facets/url_processor', $namespaces, $module_handler, 'Drupal\facets\UrlProcessor\UrlProcessorInterface', 'Drupal\facets\Annotation\FacetsUrlProcessor');
+    $this->setCacheBackend($cache_backend, 'facets_url_processors');
+  }
+
+}
diff --git a/tests/src/Unit/Plugin/processor/QueryStringUrlProcessorTest.php b/tests/src/Unit/Plugin/processor/QueryStringUrlProcessorTest.php
deleted file mode 100644
index 1b4c58f..0000000
--- a/tests/src/Unit/Plugin/processor/QueryStringUrlProcessorTest.php
+++ /dev/null
@@ -1,246 +0,0 @@
-<?php
-
-/**
- * @file
- * Contains \Drupal\Tests\facets\Plugin\Processor\QueryStringUrlProcessorTest.
- */
-
-namespace Drupal\Tests\facets\Unit\Plugin\Processor;
-
-use Drupal\facets\Entity\Facet;
-use Drupal\facets\Entity\FacetSource;
-use Drupal\facets\Plugin\facets\processor\QueryStringUrlProcessor;
-use Drupal\facets\Result\Result;
-use Drupal\Tests\UnitTestCase;
-use Symfony\Component\DependencyInjection\ContainerBuilder;
-use Symfony\Component\HttpFoundation\ParameterBag;
-use Symfony\Component\HttpFoundation\Request;
-
-/**
- * Unit test for processor.
- *
- * @group facets
- */
-class QueryStringUrlProcessorTest extends UnitTestCase {
-
-  /**
-   * The processor to be tested.
-   *
-   * @var \Drupal\facets\Plugin\facets\processor\QueryStringUrlProcessor
-   */
-  protected $processor;
-
-  /**
-   * An array containing the results before the processor has ran.
-   *
-   * @var \Drupal\facets\Result\Result[]
-   */
-  protected $originalResults;
-
-  /**
-   * Creates a new processor object for use in the tests.
-   */
-  protected function setUp() {
-    parent::setUp();
-
-    $this->originalResults = [
-      new Result('llama', 'Llama', 15),
-      new Result('badger', 'Badger', 5),
-      new Result('mushroom', 'Mushroom', 5),
-      new Result('duck', 'Duck', 15),
-      new Result('alpaca', 'Alpaca', 25),
-    ];
-
-    $this->setContainer();
-  }
-
-  /**
-   * Basic test with one active item.
-   */
-  public function testSetSingleActiveItem() {
-    $facet = new Facet([], 'facet');
-    $facet->setResults($this->originalResults);
-    $facet->setUrlAlias('test');
-    $facet->setFieldIdentifier('test');
-
-    $request = new Request();
-    $request->query->set('f', ['test:badger']);
-
-    $this->processor = new QueryStringUrlProcessor(['facet' => $facet], 'query_string', [], $request);
-    $this->processor->preQuery($facet);
-
-    $this->assertEquals(['badger'], $facet->getActiveItems());
-  }
-
-  /**
-   * Basic test with multiple active items.
-   */
-  public function testSetMultipleActiveItems() {
-    $facet = new Facet([], 'facet');
-    $facet->setResults($this->originalResults);
-    $facet->setUrlAlias('test');
-    $facet->setFieldIdentifier('test');
-
-    $request = new Request();
-    $request->query->set('f', ['test:badger', 'test:mushroom', 'donkey:kong']);
-
-    $this->processor = new QueryStringUrlProcessor(['facet' => $facet], 'query_string', [], $request);
-    $this->processor->preQuery($facet);
-
-    $this->assertEquals(['badger', 'mushroom'], $facet->getActiveItems());
-  }
-
-  /**
-   * Basic test with an empty build.
-   */
-  public function testEmptyBuild() {
-    $facet = new Facet([], 'facet');
-    $facet->setUrlAlias('test');
-    $facet->setFacetSourceId('facet_source__dummy');
-
-    $request = new Request();
-    $request->query->set('f', []);
-
-    $this->processor = new QueryStringUrlProcessor(['facet' => $facet], 'query_string', [], $request);
-    $results = $this->processor->build($facet, []);
-    $this->assertEmpty($results);
-  }
-
-  /**
-   * Test with default build.
-   */
-  public function testBuild() {
-    $facet = new Facet([], 'facet');
-    $facet->setFieldIdentifier('test');
-    $facet->setUrlAlias('test');
-    $facet->setFacetSourceId('facet_source__dummy');
-
-    $request = new Request();
-    $request->query->set('f', []);
-
-    $this->processor = new QueryStringUrlProcessor(['facet' => $facet], 'query_string', [], $request);
-    $results = $this->processor->build($facet, $this->originalResults);
-
-    /** @var \Drupal\facets\Result\ResultInterface $r */
-    foreach ($results as $r) {
-      $this->assertInstanceOf('\Drupal\facets\Result\ResultInterface', $r);
-      $this->assertEquals('route:test?f[0]=test%3A' . $r->getRawValue(), $r->getUrl()->toUriString());
-    }
-  }
-
-  /**
-   * Test with an active item already from url.
-   */
-  public function testBuildWithActiveItem() {
-    $facet = new Facet([], 'facet');
-    $facet->setFieldIdentifier('test');
-    $facet->setUrlAlias('test');
-    $facet->setFacetSourceId('facet_source__dummy');
-
-    $original_results = $this->originalResults;
-    $original_results[2]->setActiveState(TRUE);
-
-    $request = new Request();
-    $request->query->set('f', ['king:kong']);
-
-    $this->processor = new QueryStringUrlProcessor(['facet' => $facet], 'query_string', [], $request);
-    $results = $this->processor->build($facet, $original_results);
-
-    /** @var \Drupal\facets\Result\ResultInterface $r */
-    foreach ($results as $k => $r) {
-      $this->assertInstanceOf('\Drupal\facets\Result\ResultInterface', $r);
-      if ($k === 2) {
-        $this->assertEquals('route:test?f[0]=king%3Akong', $r->getUrl()->toUriString());
-      }
-      else {
-        $this->assertEquals('route:test?f[0]=king%3Akong&f[1]=test%3A' . $r->getRawValue(), $r->getUrl()->toUriString());
-      }
-    }
-  }
-
-  /**
-   * Test that the facet source configuration filter key override works.
-   */
-  public function testFacetSourceFilterKeyOverride() {
-    $facet_source = new FacetSource(['filterKey' => 'ab'], 'facets_facet_source');
-
-    // Override the container with the new facet source.
-    $storage = $this->getMock('\Drupal\Core\Entity\EntityStorageInterface');
-    $storage->expects($this->once())
-      ->method('load')
-      ->willReturn($facet_source);
-    $em = $this->getMockBuilder('\Drupal\Core\Entity\EntityTypeManagerInterface')
-      ->disableOriginalConstructor()
-      ->getMock();
-    $em->expects($this->any())
-      ->method('getStorage')
-      ->willReturn($storage);
-
-    $container = \Drupal::getContainer();
-    $container->set('entity_type.manager', $em);
-    \Drupal::setContainer($container);
-
-    $facet = new Facet([], 'facet');
-    $facet->setFieldIdentifier('test');
-    $facet->setFacetSourceId('facet_source__dummy');
-    $facet->setUrlAlias('test');
-
-    $request = new Request();
-    $request->query->set('ab', []);
-
-    $this->processor = new QueryStringUrlProcessor(['facet' => $facet], 'query_string', [], $request);
-    $results = $this->processor->build($facet, $this->originalResults);
-
-    /** @var \Drupal\facets\Result\ResultInterface $r */
-    foreach ($results as $r) {
-      $this->assertInstanceOf('\Drupal\facets\Result\ResultInterface', $r);
-      $this->assertEquals('route:test?ab[0]=test%3A' . $r->getRawValue(), $r->getUrl()->toUriString());
-    }
-
-  }
-
-  /**
-   * Set the container for use in unit tests.
-   */
-  protected function setContainer() {
-    $router = $this->getMockBuilder('Drupal\Tests\Core\Routing\TestRouterInterface')
-      ->disableOriginalConstructor()
-      ->getMock();
-    $router->expects($this->any())
-      ->method('matchRequest')
-      ->willReturn(
-        [
-          '_raw_variables' => new ParameterBag([]),
-          '_route' => 'test',
-        ]
-      );
-
-    $fsi = $this->getMockBuilder('\Drupal\facets\FacetSource\FacetSourcePluginInterface')
-      ->disableOriginalConstructor()
-      ->getMock();
-    $fsi->method('getPath')
-      ->willReturn('search/test');
-
-    $manager = $this->getMockBuilder('\Drupal\facets\FacetSource\FacetSourcePluginManager')
-      ->disableOriginalConstructor()
-      ->getMock();
-    $manager->method('createInstance')
-      ->willReturn($fsi);
-
-    $storage = $this->getMock('\Drupal\Core\Entity\EntityStorageInterface');
-    $em = $this->getMockBuilder('\Drupal\Core\Entity\EntityTypeManagerInterface')
-      ->disableOriginalConstructor()
-      ->getMock();
-    $em->expects($this->any())
-      ->method('getStorage')
-      ->willReturn($storage);
-
-    $container = new ContainerBuilder();
-    $container->set('router.no_access_checks', $router);
-    $container->set('plugin.manager.facets.facet_source', $manager);
-    $container->set('entity_type.manager', $em);
-    $container->set('entity.manager', $em);
-    \Drupal::setContainer($container);
-  }
-
-}
diff --git a/tests/src/Unit/Plugin/url_processor/QueryStringUrlProcessorTest.php b/tests/src/Unit/Plugin/url_processor/QueryStringUrlProcessorTest.php
new file mode 100644
index 0000000..9698c84
--- /dev/null
+++ b/tests/src/Unit/Plugin/url_processor/QueryStringUrlProcessorTest.php
@@ -0,0 +1,246 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Tests\facets\Plugin\url_processor\QueryStringTest.
+ */
+
+namespace Drupal\Tests\facets\Unit\Plugin\url_processor;
+
+use Drupal\facets\Entity\Facet;
+use Drupal\facets\Entity\FacetSource;
+use Drupal\facets\Plugin\facets\url_processor\QueryString;
+use Drupal\facets\Result\Result;
+use Drupal\Tests\UnitTestCase;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\HttpFoundation\ParameterBag;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Unit test for processor.
+ *
+ * @group facets
+ */
+class QueryStringTest extends UnitTestCase {
+
+  /**
+   * The processor to be tested.
+   *
+   * @var \Drupal\facets\Plugin\facets\url_processor\QueryString
+   */
+  protected $processor;
+
+  /**
+   * An array containing the results before the processor has ran.
+   *
+   * @var \Drupal\facets\Result\Result[]
+   */
+  protected $originalResults;
+
+  /**
+   * Creates a new processor object for use in the tests.
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    $this->originalResults = [
+      new Result('llama', 'Llama', 15),
+      new Result('badger', 'Badger', 5),
+      new Result('mushroom', 'Mushroom', 5),
+      new Result('duck', 'Duck', 15),
+      new Result('alpaca', 'Alpaca', 25),
+    ];
+
+    $this->setContainer();
+  }
+
+  /**
+   * Basic test with one active item.
+   */
+  public function testSetSingleActiveItem() {
+    $facet = new Facet([], 'facet');
+    $facet->setResults($this->originalResults);
+    $facet->setUrlAlias('test');
+    $facet->setFieldIdentifier('test');
+
+    $request = new Request();
+    $request->query->set('f', ['test:badger']);
+
+    $this->processor = new QueryString(['facet' => $facet], 'query_string', [], $request);
+    $this->processor->setActiveItems($facet);
+
+    $this->assertEquals(['badger'], $facet->getActiveItems());
+  }
+
+  /**
+   * Basic test with multiple active items.
+   */
+  public function testSetMultipleActiveItems() {
+    $facet = new Facet([], 'facet');
+    $facet->setResults($this->originalResults);
+    $facet->setUrlAlias('test');
+    $facet->setFieldIdentifier('test');
+
+    $request = new Request();
+    $request->query->set('f', ['test:badger', 'test:mushroom', 'donkey:kong']);
+
+    $this->processor = new QueryString(['facet' => $facet], 'query_string', [], $request);
+    $this->processor->setActiveItems($facet);
+
+    $this->assertEquals(['badger', 'mushroom'], $facet->getActiveItems());
+  }
+
+  /**
+   * Basic test with an empty build.
+   */
+  public function testEmptyBuild() {
+    $facet = new Facet([], 'facet');
+    $facet->setUrlAlias('test');
+    $facet->setFacetSourceId('facet_source__dummy');
+
+    $request = new Request();
+    $request->query->set('f', []);
+
+    $this->processor = new QueryString(['facet' => $facet], 'query_string', [], $request);
+    $results = $this->processor->buildUrls($facet, []);
+    $this->assertEmpty($results);
+  }
+
+  /**
+   * Test with default build.
+   */
+  public function testBuild() {
+    $facet = new Facet([], 'facet');
+    $facet->setFieldIdentifier('test');
+    $facet->setUrlAlias('test');
+    $facet->setFacetSourceId('facet_source__dummy');
+
+    $request = new Request();
+    $request->query->set('f', []);
+
+    $this->processor = new QueryString(['facet' => $facet], 'query_string', [], $request);
+    $results = $this->processor->buildUrls($facet, $this->originalResults);
+
+    /** @var \Drupal\facets\Result\ResultInterface $r */
+    foreach ($results as $r) {
+      $this->assertInstanceOf('\Drupal\facets\Result\ResultInterface', $r);
+      $this->assertEquals('route:test?f[0]=test%3A' . $r->getRawValue(), $r->getUrl()->toUriString());
+    }
+  }
+
+  /**
+   * Test with an active item already from url.
+   */
+  public function testBuildWithActiveItem() {
+    $facet = new Facet([], 'facet');
+    $facet->setFieldIdentifier('test');
+    $facet->setUrlAlias('test');
+    $facet->setFacetSourceId('facet_source__dummy');
+
+    $original_results = $this->originalResults;
+    $original_results[2]->setActiveState(TRUE);
+
+    $request = new Request();
+    $request->query->set('f', ['king:kong']);
+
+    $this->processor = new QueryString(['facet' => $facet], 'query_string', [], $request);
+    $results = $this->processor->buildUrls($facet, $original_results);
+
+    /** @var \Drupal\facets\Result\ResultInterface $r */
+    foreach ($results as $k => $r) {
+      $this->assertInstanceOf('\Drupal\facets\Result\ResultInterface', $r);
+      if ($k === 2) {
+        $this->assertEquals('route:test?f[0]=king%3Akong', $r->getUrl()->toUriString());
+      }
+      else {
+        $this->assertEquals('route:test?f[0]=king%3Akong&f[1]=test%3A' . $r->getRawValue(), $r->getUrl()->toUriString());
+      }
+    }
+  }
+
+  /**
+   * Test that the facet source configuration filter key override works.
+   */
+  public function testFacetSourceFilterKeyOverride() {
+    $facet_source = new FacetSource(['filterKey' => 'ab'], 'facets_facet_source');
+
+    // Override the container with the new facet source.
+    $storage = $this->getMock('\Drupal\Core\Entity\EntityStorageInterface');
+    $storage->expects($this->once())
+      ->method('load')
+      ->willReturn($facet_source);
+    $em = $this->getMockBuilder('\Drupal\Core\Entity\EntityTypeManagerInterface')
+      ->disableOriginalConstructor()
+      ->getMock();
+    $em->expects($this->any())
+      ->method('getStorage')
+      ->willReturn($storage);
+
+    $container = \Drupal::getContainer();
+    $container->set('entity_type.manager', $em);
+    \Drupal::setContainer($container);
+
+    $facet = new Facet([], 'facet');
+    $facet->setFieldIdentifier('test');
+    $facet->setFacetSourceId('facet_source__dummy');
+    $facet->setUrlAlias('test');
+
+    $request = new Request();
+    $request->query->set('ab', []);
+
+    $this->processor = new QueryString(['facet' => $facet], 'query_string', [], $request);
+    $results = $this->processor->buildUrls($facet, $this->originalResults);
+
+    /** @var \Drupal\facets\Result\ResultInterface $r */
+    foreach ($results as $r) {
+      $this->assertInstanceOf('\Drupal\facets\Result\ResultInterface', $r);
+      $this->assertEquals('route:test?ab[0]=test%3A' . $r->getRawValue(), $r->getUrl()->toUriString());
+    }
+
+  }
+
+  /**
+   * Set the container for use in unit tests.
+   */
+  protected function setContainer() {
+    $router = $this->getMockBuilder('Drupal\Tests\Core\Routing\TestRouterInterface')
+      ->disableOriginalConstructor()
+      ->getMock();
+    $router->expects($this->any())
+      ->method('matchRequest')
+      ->willReturn(
+        [
+          '_raw_variables' => new ParameterBag([]),
+          '_route' => 'test',
+        ]
+      );
+
+    $fsi = $this->getMockBuilder('\Drupal\facets\FacetSource\FacetSourcePluginInterface')
+      ->disableOriginalConstructor()
+      ->getMock();
+    $fsi->method('getPath')
+      ->willReturn('search/test');
+
+    $manager = $this->getMockBuilder('\Drupal\facets\FacetSource\FacetSourcePluginManager')
+      ->disableOriginalConstructor()
+      ->getMock();
+    $manager->method('createInstance')
+      ->willReturn($fsi);
+
+    $storage = $this->getMock('\Drupal\Core\Entity\EntityStorageInterface');
+    $em = $this->getMockBuilder('\Drupal\Core\Entity\EntityTypeManagerInterface')
+      ->disableOriginalConstructor()
+      ->getMock();
+    $em->expects($this->any())
+      ->method('getStorage')
+      ->willReturn($storage);
+
+    $container = new ContainerBuilder();
+    $container->set('router.no_access_checks', $router);
+    $container->set('plugin.manager.facets.facet_source', $manager);
+    $container->set('entity_type.manager', $em);
+    $container->set('entity.manager', $em);
+    \Drupal::setContainer($container);
+  }
+
+}