春季數據Neo4j未填充RelationshipEntity

我正在創建它們之間的實體和RelationshipEntitys。我將RelationshipEntitys放置在一個實體中，然後保存實體。這也會自動保存RelationshipEntity。春季數據Neo4j未填充RelationshipEntity

我知道關係已經保存，因爲我可以分別檢索實體和RelationshipEntity。但是，當我檢索開始或結束實體時，它的關係集是空的。

我已經試過迫使渴望，但沒有喜悅。
任何人都可以看到我在這裏做錯了嗎？

我的實體...

@NodeEntity 
public class Thing { 

public Thing() { 
    super(); 
} 

@GraphId 
private Long nodeId; 

private Long uuid; // unique across domains 

@Fetch 
@RelatedToVia(type="some default type", direction = Direction.BOTH) 
Set<ThingRelationship> relationships = new HashSet<ThingRelationship>(); 

@Fetch 
private Set<Property<?>> properties; 

public ThingRelationship relatedTo(Thing thing, String relationshipType){ 
    ThingRelationship thingRelationship = new ThingRelationship(this, thing, relationshipType); 
    relationships.add(thingRelationship); 
    return thingRelationship; 
} 

public Set<ThingRelationship> getRelationships() { 
    return relationships; 
} 

... 
}

我RelationshipEntity ...

@RelationshipEntity 
public class ThingRelationship { 

public ThingRelationship() { 
    super(); 
} 

//incremental neo4j set ID 
@GraphId Long nodeId; 

//Start and end nodes 
@StartNode Thing startThing; 
@EndNode Thing endThing; 

//Relationship Type 
@org.springframework.data.neo4j.annotation.RelationshipType 
String relationship; 

public ThingRelationship(Thing startThing, Thing endThing, String relationship) { 
    super(); 
    this.startThing = startThing; 
    this.endThing = endThing; 
    this.relationship = relationship; 
}

，最後我的測試......（對最終斷言失敗）

@Test 
@Rollback(false) 
public void testAddRelationship(){ 


    Thing thingA = new Thing(); 
    template.save(thingA); 
    Thing retrievedThingA = template.findOne(thingA.getNodeId(), Thing.class); //returns a thing OK 
    assertNotNull(retrievedThingA); 

    Thing thingB = new Thing(); 
    template.save(thingB); 
    Thing retrievedThingB = template.findOne(thingB.getNodeId(), Thing.class); //returns a thing OK 
    assertNotNull(retrievedThingB); 

    //Relationship 
    ThingRelationship thingRelationship = thingB.relatedTo(thingA, "REALLY_REALLY_LIKES"); 
    template.save(thingRelationship); 

    ThingRelationship thingRelationshipRetrieved = template.findOne(thingRelationship.getNodeId(), ThingRelationship.class); 
    assertEquals(thingB.getNodeId(), thingRelationshipRetrieved.getStartThing().getNodeId()); 
    assertEquals(thingA.getNodeId(), thingRelationshipRetrieved.getEndThing().getNodeId()); 

    Thing retrievedThingFinal = template.findOne(thingB.getNodeId(), Thing.class); 
    template.fetch(retrievedThingFinal.relationships); 
    assertEquals(1, retrievedThingFinal.getRelationships().size()); //FAILS HERE 

}

的最終斷言與「預期1但是找到0」失敗:( 如果返回的實體沒有關係E因爲我急於提取而出現的實體？

來源

2013-08-28 Rob McFeely

的問題是與下面的線

@RelatedToVia(type="some default type", direction = Direction.BOTH) 
Set<ThingRelationship> relationships = new HashSet<ThingRelationship>();

改變這種下面的作品。

@RelatedToVia(type="REALLY_REALLY_LIKES", direction = Direction.BOTH) 
Set<ThingRelationship> relationships = new HashSet<ThingRelationship>();

不確定爲什麼它不起作用，如果您使用的是動態關係。

來源

2013-08-28 22:17:03

你是對的謝謝。不幸的是這給我帶來了另一個問題。我不想有一個默認類型（或者我希望能夠像我一樣嘗試改變它），因爲我希望動態設置該集合中的每個關係。沒有這個我覺得Spring Data Neo4j是相當有限的。任何人有任何想法的工作？ –

春季數據Neo4j未填充RelationshipEntity

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