Files: Extend search to also cover tags

fixes #326

Author: marcelklehr

apps/files/lib/Search/FilesSearchProvider.php

@@ -29,6 +29,7 @@
 
 namespace OCA\Files\Search;
 
+use OC\Files\Search\SearchBinaryOperator;
 use OC\Files\Search\SearchComparison;
 use OC\Files\Search\SearchOrder;
 use OC\Files\Search\SearchQuery;
@@ -103,7 +104,11 @@ public function getOrder(string $route, array $routeParameters): int {
 	public function search(IUser $user, ISearchQuery $query): SearchResult {
 		$userFolder = $this->rootFolder->getUserFolder($user->getUID());
 		$fileQuery = new SearchQuery(
-			new SearchComparison(ISearchComparison::COMPARE_LIKE, 'name', '%' . $query->getTerm() . '%'),
+			new SearchBinaryOperator(SearchBinaryOperator::OPERATOR_OR, [
+				new SearchComparison(ISearchComparison::COMPARE_LIKE, 'name', '%' . $query->getTerm() . '%'),
+				new SearchComparison(ISearchComparison::COMPARE_LIKE, 'tagname', '%' . $query->getTerm() . '%'),
+				new SearchComparison(ISearchComparison::COMPARE_LIKE, 'systemtag', '%' . $query->getTerm() . '%'),
+			]),
 			$query->getLimit(),
 			(int)$query->getCursor(),
 			$query->getSortOrder() === ISearchQuery::SORT_DATE_DESC ? [

lib/private/Files/Cache/Cache.php

@@ -855,6 +855,10 @@ public function searchQuery(ISearchQuery $searchQuery) {
 					$builder->expr()->eq('tagmap.type', 'tag.type'),
 					$builder->expr()->eq('tagmap.categoryid', 'tag.id')
 				))
+				->innerJoin('file', 'systemtag_object_mapping', 'systemtagmap', $builder->expr()->eq('file.fileid', 'systemtagmap.objectid'))
+				->innerJoin('systemtagmap', 'systemtag', 'systemtag', $builder->expr()->eq('systemtag.id', 'systemtagmap.systemtagid'))
+				->andWhere($builder->expr()->eq('systemtag.visibility', $builder->createNamedParameter(true)))
+				->andWhere($builder->expr()->eq('systemtagmap.objecttype', $builder->createNamedParameter('files')))
 				->andWhere($builder->expr()->eq('tag.type', $builder->createNamedParameter('files')))
 				->andWhere($builder->expr()->eq('tag.uid', $builder->createNamedParameter($user->getUID())));
 		}

lib/private/Files/Cache/CacheQueryBuilder.php

@@ -47,7 +47,7 @@ public function __construct(IDBConnection $connection, SystemConfig $systemConfi
 
 	public function selectFileCache(string $alias = null) {
 		$name = $alias ? $alias : 'filecache';
-		$this->select("$name.fileid", 'storage', 'path', 'path_hash', "$name.parent", 'name', 'mimetype', 'mimepart', 'size', 'mtime',
+		$this->select("$name.fileid", 'storage', 'path', 'path_hash', "$name.parent", "$name.name", 'mimetype', 'mimepart', 'size', 'mtime',
 			'storage_mtime', 'encrypted', 'etag', 'permissions', 'checksum', 'metadata_etag', 'creation_time', 'upload_time')
 			->from('filecache', $name)
 			->leftJoin($name, 'filecache_extended', 'fe', $this->expr()->eq("$name.fileid", 'fe.fileid'));

lib/private/Files/Cache/QuerySearchHelper.php

@@ -81,7 +81,7 @@ public function shouldJoinTags(ISearchOperator $operator) {
 				return $shouldJoin || $this->shouldJoinTags($operator);
 			}, false);
 		} elseif ($operator instanceof ISearchComparison) {
-			return $operator->getField() === 'tagname' || $operator->getField() === 'favorite';
+			return $operator->getField() === 'tagname' || $operator->getField() === 'favorite' || $operator->getField() === 'systemtag';
 		}
 		return false;
 	}
@@ -162,8 +162,12 @@ private function getOperatorFieldAndValue(ISearchComparison $operator) {
 		} elseif ($field === 'favorite') {
 			$field = 'tag.category';
 			$value = self::TAG_FAVORITE;
+		} elseif ($field === 'name') {
+			$field = 'file.name';
 		} elseif ($field === 'tagname') {
 			$field = 'tag.category';
+		} elseif ($field === 'systemtag') {
+			$field = 'systemtag.name';
 		} elseif ($field === 'fileid') {
 			$field = 'file.fileid';
 		} elseif ($field === 'path' && $type === ISearchComparison::COMPARE_EQUAL) {
@@ -181,6 +185,7 @@ private function validateComparison(ISearchComparison $operator) {
 			'path' => 'string',
 			'size' => 'integer',
 			'tagname' => 'string',
+			'systemtag' => 'string',
 			'favorite' => 'boolean',
 			'fileid' => 'integer'
 		];
@@ -191,6 +196,7 @@ private function validateComparison(ISearchComparison $operator) {
 			'path' => ['eq', 'like'],
 			'size' => ['eq', 'gt', 'lt', 'gte', 'lte'],
 			'tagname' => ['eq', 'like'],
+			'systemtag' => ['eq', 'like'],
 			'favorite' => ['eq'],
 			'fileid' => ['eq']
 		];