refactor(dbal): Adjust types of some strings

lib/private/DB/Schema/Index.php

@@ -30,7 +30,9 @@ public function getWrappedIndex(): DBALIndex {
 
 	#[\Override]
 	public function getName(): string {
-		return $this->index->getName();
+		/** @var non-empty-string $name */
+		$name = $this->index->getName();
+		return $name;
 	}
 
 	#[\Override]

lib/private/DB/Schema/Table.php

@@ -256,6 +256,11 @@ public function getIndexes(): array {
 		));
 	}
 
+	#[\Override]
+	public function getIndex(string $name): IIndex {
+		return new Index($this->table->getIndex($name));
+	}
+
 	#[\Override]
 	public function getForeignKeys(): array {
 		return array_values(array_map(

lib/public/AppFramework/Db/SnowflakeAwareEntity.php

@@ -9,7 +9,7 @@
 namespace OCP\AppFramework\Db;
 
 use OCP\AppFramework\Attribute\Consumable;
-use OCP\DB\Types;
+use OCP\DB\Schema\ColumnType;
 use OCP\Server;
 use OCP\Snowflake\ISnowflakeDecoder;
 use OCP\Snowflake\ISnowflakeGenerator;
@@ -24,8 +24,8 @@
 abstract class SnowflakeAwareEntity extends Entity {
 	protected ?Snowflake $snowflake = null;
 
-	/** @psalm-param $_fieldTypes array<string, Types::*> */
-	protected array $_fieldTypes = ['id' => Types::STRING];
+	/** @psalm-param $_fieldTypes array<string, ColumnType> */
+	protected array $_fieldTypes = ['id' => ColumnType::String];
 
 	/**
 	 * @since 33.0.0

lib/public/DB/Schema/IIndex.php

@@ -21,6 +21,7 @@ interface IIndex {
 	/**
 	 * Returns the name of this index.
 	 *
+	 * @return non-empty-string
 	 * @since 35.0.0
 	 */
 	public function getName(): string;

lib/public/DB/Schema/ITable.php

@@ -31,7 +31,7 @@ public function getName(): string;
 	 * Sets the Primary Key.
 	 *
 	 * @param list<non-empty-string> $columnNames
-	 * @param string|false $indexName
+	 * @param non-empty-string|false $indexName
 	 *
 	 * @throws SchemaException
 	 * @since 35.0.0
@@ -40,6 +40,7 @@ public function setPrimaryKey(array $columnNames, string|false $indexName = fals
 
 	/**
 	 * @param list<non-empty-lowercase-string> $columnNames
+	 * @param ?non-empty-string $indexName
 	 * @param list<non-empty-lowercase-string> $flags
 	 * @param array<non-empty-lowercase-string, mixed> $options
 	 *
@@ -79,7 +80,7 @@ public function getPrimaryKey(): ?IIndex;
 	/**
 	 * Drops an index from this table.
 	 *
-	 * @param non-empty-lowercase-string $name The index name.
+	 * @param non-empty-string $name The index name.
 	 *
 	 * @throws SchemaException If the index does not exist.
 	 * @since 35.0.0
@@ -89,14 +90,14 @@ public function dropIndex(string $name): self;
 	/**
 	 * Returns whether this table has an index with the given name.
 	 *
-	 * @param non-empty-lowercase-string $name The index name.
+	 * @param non-empty-string $name The index name.
 	 * @since 35.0.0
 	 */
 	public function hasIndex(string $name): bool;
 
 	/**
 	 * @param list<string> $columnNames
-	 * @param string|null $indexName
+	 * @param non-empty-string|null $indexName
 	 * @param array<string, mixed> $options
 	 *
 	 * @throws SchemaException
@@ -107,9 +108,9 @@ public function addUniqueIndex(array $columnNames, ?string $indexName = null, ar
 	/**
 	 * Renames an index.
 	 *
-	 * @param non-empty-lowercase-string $oldName The name of the index to rename from.
-	 * @param non-empty-lowercase-string|null $newName The name of the index to rename to.
-	 *                                                 If null is given, the index name will be auto-generated.
+	 * @param non-empty-string $oldName The name of the index to rename from.
+	 * @param non-empty-string|null $newName The name of the index to rename to.
+	 *                                       If null is given, the index name will be auto-generated.
 	 *
 	 * @return self This table instance.
 	 *
@@ -200,6 +201,15 @@ public function getColumns(): array;
 	 */
 	public function getIndexes(): array;
 
+	/**
+	 * Returns a specific index by name of this table.
+	 *
+	 * @param non-empty-string $name The index name.
+	 * @return IIndex
+	 * @since 35.0.0
+	 */
+	public function getIndex(string $name): IIndex;
+
 	/**
 	 * Adds a foreign key constraint.
 	 *