1 package de.dlr.shepard.neo4Core.dao;
2
3 import de.dlr.shepard.neo4Core.entities.FileReference;
4 import de.dlr.shepard.util.Constants;
5 import de.dlr.shepard.util.CypherQueryHelper;
6 import jakarta.enterprise.context.RequestScoped;
7 import java.util.Collections;
8 import java.util.List;
9 import java.util.stream.StreamSupport;
10
11 @RequestScoped
12 public class FileReferenceDAO extends VersionableEntityDAO<FileReference> {
13
14 public List<FileReference> findByDataObjectNeo4jId(long dataObjectId) {
15 String query =
16 String.format(
17 "MATCH (d:DataObject)-[hr:has_reference]->%s WHERE ID(d)=%d ",
18 CypherQueryHelper.getObjectPart("r", "FileReference", false),
19 dataObjectId
20 ) +
21 CypherQueryHelper.getReturnPart("r");
22
23 var queryResult = findByQuery(query, Collections.emptyMap());
24
25 List<FileReference> result = StreamSupport.stream(queryResult.spliterator(), false)
26 .filter(r -> r.getDataObject() != null)
27 .filter(r -> r.getDataObject().getId().equals(dataObjectId))
28 .toList();
29
30 return result;
31 }
32
33 public List<FileReference> findByDataObjectShepardId(long dataObjectShepardId) {
34 String query =
35 String.format(
36 "MATCH (d:DataObject)-[hr:has_reference]->%s WHERE d." + Constants.SHEPARD_ID + "=%d ",
37 CypherQueryHelper.getObjectPart("r", "FileReference", false),
38 dataObjectShepardId
39 ) +
40 CypherQueryHelper.getReturnPart("r");
41 var queryResult = findByQuery(query, Collections.emptyMap());
42
43 List<FileReference> result = StreamSupport.stream(queryResult.spliterator(), false)
44 .filter(r -> r.getDataObject() != null)
45 .filter(r -> r.getDataObject().getShepardId().equals(dataObjectShepardId))
46 .toList();
47
48 return result;
49 }
50
51 @Override
52 public Class<FileReference> getEntityType() {
53 return FileReference.class;
54 }
55 }