Question

我有嵌套集合，我添加“数据”然后预先“数据”我添加自己的“标签”。我发现“数据”与“标签”的foreach一起放松。我想添加我手动从集合外部导入信息的人。

我在Cypher查询语句下面执行：我模仿了： Cypher Import Statement 和 Cypher Unwind 我通过enter link description here检查了我的json并且它已经过验证。

{  "statements": [ {  "statement": " WITH {  "categories":  [ {"dataid" : "11" , "dataname" : "data1" , "datalanguage" : "en" , "datatype" : "type1" ,"content" : "content1" , "tags" : [{"myid" : "11" , "tagid" : 10 , "tagname" : "tag1" }] } , {"dataid" : "22" , "dataname" : "data2" , "datalanguage" : "en" , "datatype" : "type2" ,"content" : "content2" , "tags" : [{"myid" : "22" , "tagid" : 20 , "tagname" : "tag2" }] } ] } AS document  UNWIND document.categories AS category  MERGE (dt:Data {name: category.dataname}) ON CREATE SET dt.id = category.dataid , dt.type = category.datatype , dt.language = category.datalanguage , dt.content = category.datacontent   MERGE (p:Person { name : 'Mahsa' , lastname : 'Mahsa' } ) ON CREATE SET p.id =1 MERGE (p)-[r:owner]->(dt)  FOREACH (mytag IN category.tags |  MERGE (t:Tag {name: mytag.tagname}) ON CREATE SET t.id = mytag.tagid  MERGE (dt)-[r2:tagged { Freq : 12 ]->(t) )" } ] }

但它返回结果:(我多次检查“意外的字符”但我找不到）

{"results":[],"errors":[{"code":"**Neo.ClientError.Request.InvalidFormat**","message":"**Unable to deserialize request: Unexpected character ('c' (code 99)): was expecting comma to separate OBJECT entries**\n at [Source: HttpInputOverHTTP@132e16b; line: 1, column: 48]"}]}

我将嵌套集合设为：

string dataCollection2 = "{  \"categories\":  [ {\"dataid\" : \"11\" , \"dataname\" : \"data1\" , \"datalanguage\" : \"en\" , \"datatype\" : \"type1\" ," +
            "\"content\" : \"content1\" , \"tags\" : [{\"myid\" : \"11\" , \"tagid\" : 10 , \"tagname\" : \"tag1\" }] }" +
            " , {\"dataid\" : \"22\" , \"dataname\" : \"data2\" , \"datalanguage\" : \"en\" , \"datatype\" : \"type2\" ," +
            "\"content\" : \"content2\" , \"tags\" : [{\"myid\" : \"22\" , \"tagid\" : 20 , \"tagname\" : \"tag2\" }] } ] }";
var obj1 = JValue.Parse(@"'" + dataCollection2 + "'");

我将我的json导入http://jsonlint,com，我得到了验证：

 {
"categories": [
    {
        "dataid": 11,
        "dataname": "data1",
        "datalanguage": "en",
        "datatype": "type1",
        "content": "content1",
        "tags": [
            {
                "myid": 11,
                "tagid": 10,
                "tagname": "tag1"
            }
        ]
    },
    {
        "dataid": 22,
        "dataname": "data2",
        "datalanguage": "en",
        "datatype": "type2",
        "content": "content2",
        "tags": [
            {
                "myid": 22,
                "tagid": 20,
                "tagname": "tag2"
            }
        ]
    }
]}

Answer 1

您传递给REST API的字符串的基本问题是您没有传递合法的Cypher查询。 Cypher属性“maps”看起来有点像JSON，不是JSON。

在您的情况下，重要的区别是属性名称不能用双引号分隔。只有字符串属性值可以用双引号分隔。

因此，categories，dataId，dataName等不得用双引号括起来。

在查询结尾附近也有拼写错误。 [r2:tagged { Freq : 12 ]应为[r2:tagged { Freq : 12} ]。

Answer 2

用于将嵌套集合添加到neo4j：

首先：为了正确输入neo4j作为参数我必须删除＆＃34; { ＆＃34;类别＆＃34;：[]}＆＃34;从json的第一个和最后一个开始。

其次：我应该将此json作为参数添加到语句

中

第三：我必须使用两个＆＃34; UNWIND和WITH＆＃34; （而不是使用foreach）将父级或子级的每一行与集合分开。

＆＃34; FOREACH＆＃34;类似于＆＃34; UNWIND和WITH＆＃34;。我的最终收藏和查询是：

<强>收集：

{"id" : 1, "name" : "Data1", "language" : "en", "tags": {"id" : 11, "name": "tag 11" } } ,  {"id" : 2, "name": "Data2" , "tags": [ {"id" : 33, "name": "tag 33"} ,  {"id" : 44, "name": "tag44"} ] }

<强>查询：

{  "statements": [ {  "statement": " UNWIND { datas } AS data  MERGE (p:Person { name : 'God' , lastname : 'God' } ) ON CREATE SET p.id =2 MERGE (d:Data {name: data.name}) ON CREATE SET d.id = data.id  , d.language = data.language   MERGE (p)-[r:owner]->(d)  WITH  d, data.tags AS mytags  UNWIND mytags AS mytag  MERGE (t:Tag {name: mytag.name}) ON CREATE SET t.id = mytag.id  MERGE (d)-[r2:tagged { Freq : 12 } ]->(t) " , "parameters":  { "datas" : [{"id" : 1, "name" : "Data1", "language" : "en", "tags": {"id" : 11, "name": "tag 11" } } ,  {"id" : 2, "name": "Data2" , "tags": [ {"id" : 33, "name": "tag 33"} ,  {"id" : 44, "name": "tag44"} ] }]  }  } ] }

Neo4j Cypher：通过获取错误导入嵌套集合：无法反序列化请求：意外的字符代码99

2 个答案: