diff --git a/core/src/main/java/org/polypheny/db/adapter/DataSource.java b/core/src/main/java/org/polypheny/db/adapter/DataSource.java
index 5b3196fc25..9933b8c192 100644
--- a/core/src/main/java/org/polypheny/db/adapter/DataSource.java
+++ b/core/src/main/java/org/polypheny/db/adapter/DataSource.java
@@ -18,8 +18,6 @@
 
 import com.google.gson.JsonObject;
 import com.google.gson.JsonSerializer;
-import java.util.HashSet;
-import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import lombok.Getter;
@@ -38,7 +36,7 @@ public abstract class DataSource<S extends AdapterCatalog> extends Adapter<S> im
     protected DataSource( final long adapterId, final String uniqueName, final Map<String, String> settings, final DeployMode mode, boolean dataReadOnly, S catalog, Set<DataModel> supportedModels ) {
         super( adapterId, uniqueName, settings, mode, catalog );
         this.dataReadOnly = dataReadOnly;
-        this.supportedDataModels = Set.copyOf(supportedModels);
+        this.supportedDataModels = Set.copyOf( supportedModels );
         informationPage.setLabel( "Sources" );
 
     }
diff --git a/core/src/main/java/org/polypheny/db/catalog/impl/allocation/PolyAllocRelCatalog.java b/core/src/main/java/org/polypheny/db/catalog/impl/allocation/PolyAllocRelCatalog.java
index a5d94b524b..08314b476c 100644
--- a/core/src/main/java/org/polypheny/db/catalog/impl/allocation/PolyAllocRelCatalog.java
+++ b/core/src/main/java/org/polypheny/db/catalog/impl/allocation/PolyAllocRelCatalog.java
@@ -206,7 +206,6 @@ public void addPartitionProperty( long tableId, PartitionProperty partitionPrope
     }
 
 
-
     @Override
     public void updatePartition( long partitionId, Long partitionGroupId ) {
 
@@ -229,6 +228,7 @@ public void deleteAllocation( long allocId ) {
         change();
     }
 
+
     @Override
     public AllocationPlacement addPlacement( long logicalEntityId, long namespaceId, long adapterId ) {
         long id = idBuilder.getNewPlacementId();
diff --git a/core/src/main/java/org/polypheny/db/catalog/impl/logical/RelationalCatalog.java b/core/src/main/java/org/polypheny/db/catalog/impl/logical/RelationalCatalog.java
index 83143fa04a..348bb46e4f 100644
--- a/core/src/main/java/org/polypheny/db/catalog/impl/logical/RelationalCatalog.java
+++ b/core/src/main/java/org/polypheny/db/catalog/impl/logical/RelationalCatalog.java
@@ -84,6 +84,7 @@ public class RelationalCatalog implements PolySerializable, LogicalRelationalCat
 
     public Map<Long, AlgNode> nodes;
 
+
     @Serialize
     public Map<Long, LogicalIndex> indexes;