Fix bug with lost projected relationship type name

Co-Authored-By: Paul Horn <paul.horn@neotechnology.com>

Author: jjaderberg

core/src/main/java/org/neo4j/graphalgo/RelationshipProjectionMapping.java

@@ -33,9 +33,13 @@ static RelationshipProjectionMapping all() {
     }
 
     static RelationshipProjectionMapping all(Orientation orientation) {
+        return all("", orientation);
+    }
+
+    static RelationshipProjectionMapping all(String projectedType, Orientation orientation) {
         return ImmutableRelationshipProjectionMapping.builder()
             .typeName("")
-            .relationshipType(RelationshipType.of(""))
+            .relationshipType(RelationshipType.of(projectedType))
             .orientation(orientation)
             .typeId(ANY_RELATIONSHIP_TYPE)
             .exists(true)

core/src/main/java/org/neo4j/graphalgo/core/GraphDimensionsReader.java

@@ -89,7 +89,9 @@ public GraphDimensions apply(KernelTransaction transaction) throws RuntimeExcept
                 Orientation orientation = relationshipProjection.orientation();
 
                 RelationshipProjectionMapping mapping = relationshipProjection.projectAll()
-                    ? RelationshipProjectionMapping.all(orientation)
+                    ? RelationshipType.ALL_RELATIONSHIPS.equals(relationshipType)
+                        ? RelationshipProjectionMapping.all(orientation)
+                        : RelationshipProjectionMapping.all(relationshipType.name(), orientation)
                     : RelationshipProjectionMapping.of(
                         relationshipType,
                         typeName,

proc/catalog/src/test/java/org/neo4j/graphalgo/catalog/GraphCreateProcTest.java

@@ -133,6 +133,15 @@ void tearDown() {
         GraphStoreCatalog.removeAllLoadedGraphs();
     }
 
+    @Test
+    void shouldLoadNamedAllRelationshipsProjection() {
+        String createQuery = "CALL gds.graph.create('test', '*', {test: {type: '*'}})";
+        runQuery(createQuery);
+        String algoQuery = "CALL gds.testProc.test('test', {relationshipTypes: ['test'], writeProperty: 'foo'})";
+        // Test that the query doesn't throw an exception
+        runQuery(algoQuery);
+    }
+
     @Test
     void failWhenNotFindingGraph() {
         String query1 = "CALL gds.testProc.test('nope', {writeProperty: 'p'})";