resolve convos

Author: PhilippSchmelter

CHANGELOG.md

@@ -25,6 +25,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Change spotless to use googleJavaFormat('1.28.0') [#1409](https://github.com/ie3-institute/PowerSystemDataModel/issues/1409)
 - Change `TimeSeries` to no longer extend `UniqueEntity` [#1441](https://github.com/ie3-institute/PowerSystemDataModel/issues/1441)
 - Refactor CSV handling into shared file-based infrastructure. [#1450](https://github.com/ie3-institute/PowerSystemDataModel/issues/1445)
+
 ## [8.1.0] - 2025-07-25
 
 ### Added

src/main/java/edu/ie3/datamodel/io/connectors/FileConnector.java

@@ -15,15 +15,17 @@
 public abstract class FileConnector implements DataConnector {
 
   protected final Path baseDirectory;
-  private final Function<String, InputStream> inputStreamBuilder;
+
+  /** Optional factory for custom input streams; may be {@code null} to use the default handling. */
+  private final Function<String, InputStream> customInputStream;
 
   protected FileConnector(Path baseDirectory) {
     this(baseDirectory, null);
   }
 
-  protected FileConnector(Path baseDirectory, Function<String, InputStream> inputStreamBuilder) {
+  protected FileConnector(Path baseDirectory, Function<String, InputStream> customInputStream) {
     this.baseDirectory = baseDirectory;
-    this.inputStreamBuilder = inputStreamBuilder;
+    this.customInputStream = customInputStream;
   }
 
   /** Returns the base directory backing this connector. */
@@ -37,8 +39,8 @@ public Path getBaseDirectory() {
    */
   protected InputStream openInputStream(Path filePath) throws FileNotFoundException {
     Path fullPath = resolveFilePath(filePath);
-    if (inputStreamBuilder != null) {
-      return inputStreamBuilder.apply(fullPath.toString());
+    if (customInputStream != null) {
+      return customInputStream.apply(fullPath.toString());
     }
     return new FileInputStream(fullPath.toFile());
   }

src/test/groovy/edu/ie3/datamodel/io/source/csv/FileTimeSeriesMetaInformationSourceIT.groovy

@@ -3,12 +3,13 @@
  * Institute of Energy Systems, Energy Efficiency and Energy Economics,
  * Research group Distribution grid planning and operation
  */
-package edu.ie3.datamodel.io.source.csv
+package edu.ie3.datamodel.io.source.file
 
 import edu.ie3.datamodel.io.file.FileType
 import edu.ie3.datamodel.io.naming.FileNamingStrategy
 import edu.ie3.datamodel.io.naming.timeseries.ColumnScheme
 import edu.ie3.datamodel.io.naming.timeseries.FileIndividualTimeSeriesMetaInformation
+import edu.ie3.datamodel.io.source.csv.CsvTestDataMeta
 import edu.ie3.datamodel.io.source.file.FileTimeSeriesMetaInformationSource
 import spock.lang.Shared
 import spock.lang.Specification
@@ -54,6 +55,7 @@ class FileTimeSeriesMetaInformationSourceIT extends Specification implements Csv
 
     then:
     result.present
+    result.get().fileType == FileType.CSV
     result.get().columnScheme.scheme == columnScheme
 
     where: