我有一個簡單的關係測試，我試圖運行使用Rest API創(chuàng)建一個獨特的節(jié)點(java-rest-binding)https://github.com/neo4j/java-rest-binding但不幸的是我被困在某些東西上，這裏是細節(jié)：(非唯一的節(jié)點和關係工作完全正常，與這一點，它沒有，很有可能我做的東西幼稚(原諒我缺乏的Neo4j的知識)getOrCreate for java-rest-api neo4j失敗

final UserModel userModel = new UserModel();

final HashMap uModelAttributes = new HashMap(0);

uModelAttributes.put("name", "AnirudhVyas");

userModel.setAttributes(uModelAttributes);

final HashSet buyHistory = new HashSet();

final Action buyAction = new Action();

final ProductModel productModel = new ProductModel();

final HashMap attributes = new HashMap(0);

attributes.put("name", "mercedes benz ");

attributes.put("make", "mercedes benz");

attributes.put("model", "sls 550");

attributes.put("year", "2014");

productModel.setAttributes(attributes);

buyAction.setProduct(productModel);

buyHistory.add(buyAction);

userModel.setBuyHistory(buyHistory);

System.out.println("Before");

new UserModelDAO().createCompleteTree(userModel);

System.out.println("Completed >>>

，如果我。使用此道：

final RestNode root = api.getOrCreateNode(api.index().forNodes("users", MapUtil.stringMap(IndexManager.PROVIDER, "lucene", "type", "fulltext")), "name", m

.getAttributes().get("name"), m.getAttributes());

api.getOrCreateNode(api.index().forNodes("products", MapUtil.stringMap(IndexManager.PROVIDER, "lucene", "type", "fulltext")), "name", buyAction.getProduct().getAttributes().get("name"), buyAction.getProduct().getAttributes()), RelationshipTypes.BOUGHT);

這基本上失敗：

java.lang.RuntimeException: Error retrieving or creating node for key name and value AnirudhVyas with index users

at org.neo4j.rest.graphdb.ExecutingRestAPI.getOrCreateNode(ExecutingRestAPI.java:448)

at org.neo4j.rest.graphdb.RestAPIFacade.getOrCreateNode(RestAPIFacade.java:223)

at xxxx.xxxx.xxxx.graph.UserModelCreateTasteKeyNeo4JBatchCallback.recordBatch(UserModelCreateTasteKeyNeo4JBatchCallback.java:61)

總結

以上是生活随笔為你收集整理的java版本的getorcreate,getOrCreate for java-rest-api neo4j失敗的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。