diff --git a/config/schema/facets.processor.schema.yml b/config/schema/facets.processor.schema.yml
index 54f2740..cd012d6 100644
--- a/config/schema/facets.processor.schema.yml
+++ b/config/schema/facets.processor.schema.yml
@@ -98,3 +98,17 @@ plugin.plugin_configuration.facets_processor.hide_active_items_processor:
 
 plugin.plugin_configuration.facets_processor.list_item:
   type: config_object
+
+plugin.plugin_configuration.facets_processor.date_item:
+  type: mapping
+  label: 'Boolean processor'
+  mapping:
+    display_relative:
+      type: boolean
+      label: 'Display relative'
+    granularity:
+      type: integer
+      label: 'Granularity'
+    date_display:
+      type: string
+      label: 'Date display'
diff --git a/src/Plugin/facets/query_type/SearchApiRange.php b/src/Plugin/facets/query_type/SearchApiRange.php
index f1dba88..81e8b01 100644
--- a/src/Plugin/facets/query_type/SearchApiRange.php
+++ b/src/Plugin/facets/query_type/SearchApiRange.php
@@ -17,13 +17,6 @@
  */
 class SearchApiRange extends QueryTypePluginBase {
 
-  /**
-   * The backend's native query object.
-   *
-   * @var \Drupal\search_api\Query\QueryInterface
-   */
-  protected $query;
-
   /**
    * {@inheritdoc}
    */
diff --git a/src/Plugin/facets/query_type/SearchApiString.php b/src/Plugin/facets/query_type/SearchApiString.php
index 27424a6..c9c7bf9 100644
--- a/src/Plugin/facets/query_type/SearchApiString.php
+++ b/src/Plugin/facets/query_type/SearchApiString.php
@@ -22,13 +22,6 @@
  */
 class SearchApiString extends QueryTypePluginBase {
 
-  /**
-   * The backend's native query object.
-   *
-   * @var \Drupal\search_api\Query\QueryInterface
-   */
-  protected $query;
-
   /**
    * {@inheritdoc}
    */
diff --git a/src/QueryType/QueryTypeRangeBase.php b/src/QueryType/QueryTypeRangeBase.php
index fbc1302..e447861 100644
--- a/src/QueryType/QueryTypeRangeBase.php
+++ b/src/QueryType/QueryTypeRangeBase.php
@@ -37,7 +37,8 @@ public function execute() {
         foreach ($active_items as $value) {
           $range = $this->calculateRange($value);
 
-          $item_filter = $query->createConditionGroup($exclude ? 'OR' : 'AND', ['facet:' . $field_identifier]);
+          $conjunction = $exclude ? 'OR' : 'AND';
+          $item_filter = $query->createConditionGroup($conjunction, ['facet:' . $field_identifier]);
           $item_filter->addCondition($this->facet->getFieldIdentifier(), $range['start'], $exclude ? '<' : '>=');
           $item_filter->addCondition($this->facet->getFieldIdentifier(), $range['stop'], $exclude ? '>' : '<=');
 
diff --git a/tests/src/Functional/IntegrationTest.php b/tests/src/Functional/IntegrationTest.php
index 3e6e7d4..1542a13 100644
--- a/tests/src/Functional/IntegrationTest.php
+++ b/tests/src/Functional/IntegrationTest.php
@@ -480,8 +480,9 @@ public function testExcludeFacetDate() {
 
     $form = [
       'widget' => 'links',
-      'facet_settings[date_item][status]' => TRUE,
-      'facet_settings[date_item][settings][display_relative]' => FALSE,
+      'facet_settings[exclude]' => 0,
+      'facet_settings[date_item][status]' => 1,
+      'facet_settings[date_item][settings][display_relative]' => 0,
       'facet_settings[date_item][settings][granularity]' => SearchApiDate::FACETAPI_DATE_MONTH,
     ];
     $this->drupalGet($facet_edit_page);
@@ -490,20 +491,19 @@ public function testExcludeFacetDate() {
     $this->drupalGet('search-api-test-fulltext');
     $this->assertSession()->pageTextContains('foo old');
     $this->assertSession()->pageTextContains('foo new');
-    $this->clickLink('1490000000');
-    $this->checkFacetIsActive('1490000000');
+    $this->clickLink('March 2017');
+    $this->checkFacetIsActive('March 2017');
     $this->assertSession()->pageTextContains('foo new');
     $this->assertSession()->pageTextNotContains('foo old');
 
     $this->drupalGet($facet_edit_page);
     $this->assertSession()->checkboxNotChecked('edit-facet-settings-exclude');
-    $form['facet_settings[exclude]'] = TRUE;
-    $this->drupalPostForm(NULL, $form, 'Save');
+    $this->drupalPostForm(NULL, ['facet_settings[exclude]' => 1], 'Save');
     $this->assertSession()->checkboxChecked('edit-facet-settings-exclude');
 
     $this->drupalGet('search-api-test-fulltext');
-    $this->clickLink('1490000000');
-    $this->checkFacetIsActive('1490000000');
+    $this->clickLink('March 2017');
+    $this->checkFacetIsActive('March 2017');
     $this->assertSession()->pageTextContains('foo old');
     $this->assertSession()->pageTextNotContains('foo new');
   }