diff --git a/lib/composer/composer/autoload_classmap.php b/lib/composer/composer/autoload_classmap.php
index b7af5b3819..d04a186036 100644
--- a/lib/composer/composer/autoload_classmap.php
+++ b/lib/composer/composer/autoload_classmap.php
@@ -266,6 +266,7 @@ return array(
     'OCP\\FullTextSearch\\Model\\IRunner' => $baseDir . '/lib/public/FullTextSearch/Model/IRunner.php',
     'OCP\\FullTextSearch\\Model\\ISearchOption' => $baseDir . '/lib/public/FullTextSearch/Model/ISearchOption.php',
     'OCP\\FullTextSearch\\Model\\ISearchRequest' => $baseDir . '/lib/public/FullTextSearch/Model/ISearchRequest.php',
+    'OCP\\FullTextSearch\\Model\\ISearchRequestSimpleQuery' => $baseDir . '/lib/public/FullTextSearch/Model/ISearchRequestSimpleQuery.php',
     'OCP\\FullTextSearch\\Model\\ISearchResult' => $baseDir . '/lib/public/FullTextSearch/Model/ISearchResult.php',
     'OCP\\FullTextSearch\\Model\\ISearchTemplate' => $baseDir . '/lib/public/FullTextSearch/Model/ISearchTemplate.php',
     'OCP\\FullTextSearch\\Service\\IIndexService' => $baseDir . '/lib/public/FullTextSearch/Service/IIndexService.php',
@@ -926,6 +927,7 @@ return array(
     'OC\\FullTextSearch\\Model\\DocumentAccess' => $baseDir . '/lib/private/FullTextSearch/Model/DocumentAccess.php',
     'OC\\FullTextSearch\\Model\\IndexDocument' => $baseDir . '/lib/private/FullTextSearch/Model/IndexDocument.php',
     'OC\\FullTextSearch\\Model\\SearchOption' => $baseDir . '/lib/private/FullTextSearch/Model/SearchOption.php',
+    'OC\\FullTextSearch\\Model\\SearchRequestSimpleQuery' => $baseDir . '/lib/private/FullTextSearch/Model/SearchRequestSimpleQuery.php',
     'OC\\FullTextSearch\\Model\\SearchTemplate' => $baseDir . '/lib/private/FullTextSearch/Model/SearchTemplate.php',
     'OC\\GlobalScale\\Config' => $baseDir . '/lib/private/GlobalScale/Config.php',
     'OC\\Group\\Backend' => $baseDir . '/lib/private/Group/Backend.php',
diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
index 5aa6af0697..8cd007f513 100644
--- a/lib/composer/composer/autoload_static.php
+++ b/lib/composer/composer/autoload_static.php
@@ -300,6 +300,7 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
         'OCP\\FullTextSearch\\Model\\IRunner' => __DIR__ . '/../../..' . '/lib/public/FullTextSearch/Model/IRunner.php',
         'OCP\\FullTextSearch\\Model\\ISearchOption' => __DIR__ . '/../../..' . '/lib/public/FullTextSearch/Model/ISearchOption.php',
         'OCP\\FullTextSearch\\Model\\ISearchRequest' => __DIR__ . '/../../..' . '/lib/public/FullTextSearch/Model/ISearchRequest.php',
+        'OCP\\FullTextSearch\\Model\\ISearchRequestSimpleQuery' => __DIR__ . '/../../..' . '/lib/public/FullTextSearch/Model/ISearchRequestSimpleQuery.php',
         'OCP\\FullTextSearch\\Model\\ISearchResult' => __DIR__ . '/../../..' . '/lib/public/FullTextSearch/Model/ISearchResult.php',
         'OCP\\FullTextSearch\\Model\\ISearchTemplate' => __DIR__ . '/../../..' . '/lib/public/FullTextSearch/Model/ISearchTemplate.php',
         'OCP\\FullTextSearch\\Service\\IIndexService' => __DIR__ . '/../../..' . '/lib/public/FullTextSearch/Service/IIndexService.php',
@@ -960,6 +961,7 @@ class ComposerStaticInit53792487c5a8370acc0b06b1a864ff4c
         'OC\\FullTextSearch\\Model\\DocumentAccess' => __DIR__ . '/../../..' . '/lib/private/FullTextSearch/Model/DocumentAccess.php',
         'OC\\FullTextSearch\\Model\\IndexDocument' => __DIR__ . '/../../..' . '/lib/private/FullTextSearch/Model/IndexDocument.php',
         'OC\\FullTextSearch\\Model\\SearchOption' => __DIR__ . '/../../..' . '/lib/private/FullTextSearch/Model/SearchOption.php',
+        'OC\\FullTextSearch\\Model\\SearchRequestSimpleQuery' => __DIR__ . '/../../..' . '/lib/private/FullTextSearch/Model/SearchRequestSimpleQuery.php',
         'OC\\FullTextSearch\\Model\\SearchTemplate' => __DIR__ . '/../../..' . '/lib/private/FullTextSearch/Model/SearchTemplate.php',
         'OC\\GlobalScale\\Config' => __DIR__ . '/../../..' . '/lib/private/GlobalScale/Config.php',
         'OC\\Group\\Backend' => __DIR__ . '/../../..' . '/lib/private/Group/Backend.php',
diff --git a/lib/private/FullTextSearch/Model/SearchRequestSimpleQuery.php b/lib/private/FullTextSearch/Model/SearchRequestSimpleQuery.php
new file mode 100644
index 0000000000..a01fb23291
--- /dev/null
+++ b/lib/private/FullTextSearch/Model/SearchRequestSimpleQuery.php
@@ -0,0 +1,188 @@
+<?php
+declare(strict_types=1);
+
+
+/**
+ * FullTextSearch - Full text search framework for Nextcloud
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2018
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+namespace OC\FullTextSearch\Model;
+
+
+use JsonSerializable;
+use OCP\FullTextSearch\Model\ISearchRequestSimpleQuery;
+
+
+/**
+ * @since 17.0.0
+ *
+ * Class SearchRequestSimpleQuery
+ *
+ * @package OC\FullTextSearch\Model
+ */
+final class SearchRequestSimpleQuery implements ISearchRequestSimpleQuery, JsonSerializable {
+
+
+	/** @var int */
+	private $type = 0;
+
+	/** @var string */
+	private $field = '';
+
+	/** @var array */
+	private $values = [];
+
+
+	/**
+	 * SearchRequestQuery constructor.
+	 *
+	 * @param $type
+	 * @param $field
+	 *
+	 * @since 17.0.0
+	 */
+	public function __construct(string $field, int $type) {
+		$this->field = $field;
+		$this->type = $type;
+	}
+
+
+	/**
+	 * Get the compare type of the query
+	 *
+	 * @return int
+	 * @since 17.0.0
+	 */
+	public function getType(): int {
+		return $this->type;
+	}
+
+
+	/**
+	 * Get the field to apply query
+	 *
+	 * @return string
+	 * @since 17.0.0
+	 */
+	public function getField(): string {
+		return $this->field;
+	}
+
+	/**
+	 * Set the field to apply query
+	 *
+	 * @param string $field
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function setField(string $field): ISearchRequestSimpleQuery {
+		$this->field = $field;
+
+		return $this;
+	}
+
+
+	/**
+	 * Get the value to compare (string)
+	 *
+	 * @return array
+	 * @since 17.0.0
+	 */
+	public function getValues(): array {
+		return $this->values;
+	}
+
+
+	/**
+	 * Add value to compare (string)
+	 *
+	 * @param string $value
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function addValue(string $value): ISearchRequestSimpleQuery {
+		$this->values[] = $value;
+
+		return $this;
+	}
+
+	/**
+	 * Add value to compare (int)
+	 *
+	 * @param int $value
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function addValueInt(int $value): ISearchRequestSimpleQuery {
+		$this->values[] = $value;
+
+		return $this;
+	}
+
+	/**
+	 * Add value to compare (array)
+	 *
+	 * @param array $value
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function addValueArray(array $value): ISearchRequestSimpleQuery {
+		$this->values[] = $value;
+
+		return $this;
+	}
+
+	/**
+	 * Add value to compare (bool)
+	 *
+	 * @param bool $value
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function addValueBool(bool $value): ISearchRequestSimpleQuery {
+		$this->values[] = $value;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return array|mixed
+	 * @since 17.0.0
+	 */
+	public function jsonSerialize() {
+		return [
+			'type'   => $this->getType(),
+			'field'  => $this->getField(),
+			'values' => $this->getValues()
+		];
+	}
+
+}
diff --git a/lib/public/FullTextSearch/Model/ISearchRequest.php b/lib/public/FullTextSearch/Model/ISearchRequest.php
index 073b4805f6..c7e9691301 100644
--- a/lib/public/FullTextSearch/Model/ISearchRequest.php
+++ b/lib/public/FullTextSearch/Model/ISearchRequest.php
@@ -322,5 +322,25 @@ interface ISearchRequest {
 	public function getFields(): array;
 
 
+
+	/**
+	 * Add a MUST search on an extra field
+	 *
+	 * @param ISearchRequestSimpleQuery $query
+	 *
+	 * @return ISearchRequest
+	 * @since 17.0.0
+	 */
+	public function addSimpleQuery(ISearchRequestSimpleQuery $query): ISearchRequest;
+
+
+	/**
+	 * Get the list of queries on extra field.
+	 *
+	 * @return ISearchRequestSimpleQuery[]
+	 * @since 17.0.0
+	 */
+	public function getSimpleQueries(): array;
+
 }
 
diff --git a/lib/public/FullTextSearch/Model/ISearchRequestSimpleQuery.php b/lib/public/FullTextSearch/Model/ISearchRequestSimpleQuery.php
new file mode 100644
index 0000000000..fb390f8fff
--- /dev/null
+++ b/lib/public/FullTextSearch/Model/ISearchRequestSimpleQuery.php
@@ -0,0 +1,137 @@
+<?php
+declare(strict_types=1);
+
+
+/**
+ * FullTextSearch - Full text search framework for Nextcloud
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2018
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+namespace OCP\FullTextSearch\Model;
+
+
+/**
+ * Interface ISearchRequestSimpleQuery
+ *
+ * Add a Query during a Search Request...
+ * - on a specific field,
+ * - using a specific value,
+ * - with a specific comparison
+ *
+ * @since 17.0.0
+ *
+ * @package OCP\FullTextSearch\Model
+ */
+interface ISearchRequestSimpleQuery {
+
+
+	const COMPARE_TYPE_TEXT = 1;
+	const COMPARE_TYPE_KEYWORD = 2;
+	const COMPARE_TYPE_INT_EQ = 3;
+	const COMPARE_TYPE_INT_GTE = 4;
+	const COMPARE_TYPE_INT_GT = 5;
+	const COMPARE_TYPE_INT_LTE = 6;
+	const COMPARE_TYPE_INT_LT = 7;
+	const COMPARE_TYPE_BOOL = 8;
+	const COMPARE_TYPE_ARRAY = 9;
+
+
+	/**
+	 * Get the compare type of the query
+	 *
+	 * @return int
+	 * @since 17.0.0
+	 */
+	public function getType(): int;
+
+
+	/**
+	 * Get the field to apply query
+	 *
+	 * @return string
+	 * @since 17.0.0
+	 */
+	public function getField(): string;
+
+	/**
+	 * Set the field to apply query
+	 *
+	 * @param string $field
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function setField(string $field): ISearchRequestSimpleQuery;
+
+
+	/**
+	 * Get the all values to compare
+	 *
+	 * @return array
+	 * @since 17.0.0
+	 */
+	public function getValues(): array;
+
+	/**
+	 * Add value to compare (string)
+	 *
+	 * @param string $value
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function addValue(string $value): ISearchRequestSimpleQuery;
+
+	/**
+	 * Add value to compare (int)
+	 *
+	 * @param int $value
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function addValueInt(int $value): ISearchRequestSimpleQuery;
+
+	/**
+	 * Add value to compare (array)
+	 *
+	 * @param array $value
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function addValueArray(array $value): ISearchRequestSimpleQuery;
+
+	/**
+	 * Add value to compare (bool)
+	 *
+	 * @param bool $value
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function addValueBool(bool $value): ISearchRequestSimpleQuery;
+
+}
+