Question

我正在尝试从mongodb集合中检索json数据，并将其创建为neo4j中的标签。我正在使用mongo REST API从mongodb检索json。我紧跟link text的威廉·里昂（William Lyon）讲了“使用MongoDB和Neo4j的多语言持久性”。

问题是我无法加载所有数据。以下是json数据的格式。

> db.cves.findOne()
{
        "_id" : ObjectId("5a37226550eb46004dea39b0"),
        "vulnerable_configuration_cpe_2_2" : [
                "cpe:/o:bsdi:bsd_os:3.1",
                "cpe:/o:freebsd:freebsd:1.0",
                "cpe:/o:freebsd:freebsd:1.1",
                "cpe:/o:freebsd:freebsd:1.1.5.1",
                "cpe:/o:freebsd:freebsd:1.2",
                "cpe:/o:freebsd:freebsd:2.0",
                "cpe:/o:freebsd:freebsd:2.0.1",
                "cpe:/o:freebsd:freebsd:2.0.5",
                "cpe:/o:freebsd:freebsd:2.1.5",
                "cpe:/o:freebsd:freebsd:2.1.6",
                "cpe:/o:freebsd:freebsd:2.1.6.1",
                "cpe:/o:freebsd:freebsd:2.1.7",
                "cpe:/o:freebsd:freebsd:2.1.7.1",
                "cpe:/o:freebsd:freebsd:2.2",
                "cpe:/o:freebsd:freebsd:2.2.2",
                "cpe:/o:freebsd:freebsd:2.2.3",
                "cpe:/o:freebsd:freebsd:2.2.4",
                "cpe:/o:freebsd:freebsd:2.2.5",
                "cpe:/o:freebsd:freebsd:2.2.6",
                "cpe:/o:freebsd:freebsd:2.2.8",
                "cpe:/o:freebsd:freebsd:3.0",
                "cpe:/o:openbsd:openbsd:2.3",
                "cpe:/o:openbsd:openbsd:2.4"
        ],
        "impact" : {
                "integrity" : "NONE",
                "availability" : "PARTIAL",
                "confidentiality" : "NONE"
        },
        "vulnerable_configuration" : [
                "cpe:2.3:o:bsdi:bsd_os:3.1",
                "cpe:2.3:o:freebsd:freebsd:1.0",
                "cpe:2.3:o:freebsd:freebsd:1.1",
                "cpe:2.3:o:freebsd:freebsd:1.1.5.1",
                "cpe:2.3:o:freebsd:freebsd:1.2",
                "cpe:2.3:o:freebsd:freebsd:2.0",
                "cpe:2.3:o:freebsd:freebsd:2.0.1",
                "cpe:2.3:o:freebsd:freebsd:2.0.5",
                "cpe:2.3:o:freebsd:freebsd:2.1.5",
                "cpe:2.3:o:freebsd:freebsd:2.1.6",
                "cpe:2.3:o:freebsd:freebsd:2.1.6.1",
                "cpe:2.3:o:freebsd:freebsd:2.1.7",
                "cpe:2.3:o:freebsd:freebsd:2.1.7.1",
                "cpe:2.3:o:freebsd:freebsd:2.2",
                "cpe:2.3:o:freebsd:freebsd:2.2.2",
                "cpe:2.3:o:freebsd:freebsd:2.2.3",
                "cpe:2.3:o:freebsd:freebsd:2.2.4",
                "cpe:2.3:o:freebsd:freebsd:2.2.5",
                "cpe:2.3:o:freebsd:freebsd:2.2.6",
                "cpe:2.3:o:freebsd:freebsd:2.2.8",
                "cpe:2.3:o:freebsd:freebsd:3.0",
                "cpe:2.3:o:openbsd:openbsd:2.3",
                "cpe:2.3:o:openbsd:openbsd:2.4"
        ],
        "cvss" : 5,
        "references" : [
                "http://www.openbsd.org/errata23.html#tcpfix"
        ],
        "Modified" : ISODate("2010-12-16T00:00:00Z"),
        "summary" : "ip_input.c in BSD-derived TCP/IP implementations allows remote attackers to cause a denial of service (crash or hang) via crafted packets.",
        "cwe" : "CWE-20",
        "Published" : ISODate("1999-12-30T00:00:00Z"),
        "cvss-time" : ISODate("2004-01-01T00:00:00Z"),
        "access" : {
                "vector" : "NETWORK",
                "authentication" : "NONE",
                "complexity" : "LOW"
        },
        "id" : "CVE-1999-0001"
}
>

以下查询工作正常

//Load CPE collection from CVEDB of mongodb as CVE Label
CALL apoc.load.json('http://127.0.0.1:28017/cvedb/cves/') YIELD value
UNWIND value.rows as cveData
MERGE (c:CVE{_id:cveData._id['$oid']})
ON Create set c.id=cveData.id, c.cvss = cveData.cvss

输出：

Added 1000 labels, created 1000 nodes, set 2970 properties, completed after 462 ms.

问题：

> db.cves.count();
99022

集合中有99022个记录，为什么在我的密码查询中仅创建1000个节点而不创建99022个节点？

谢谢

Answer 1

仅创建1000个节点的一些可能原因：

MERGE将不会创建新节点。所以也许您已经有一些匹配的节点。
如果多个CVE具有相同的cveData._id['$oid']值，那么其中的一个CVE中最多个将创建一个新节点。

但是，如果创建1000个节点，我不知道为什么仅设置2970个属性。鉴于您的Cypher代码，我希望可以设置3000个属性。

Answer 2

您能提供：

CALL apoc.load.json('http://127.0.0.1:28017/cvedb/cves/') YIELD value
RETURN count(*);

CALL apoc.load.json('http://127.0.0.1:28017/cvedb/cves/') YIELD value
UNWIND value.rows as cveData
RETURN count(*);


CALL apoc.load.json('http://127.0.0.1:28017/cvedb/cves/') YIELD value
UNWIND value.rows as cveData
RETURN count(distinct cveData._id['$oid']);

也

CALL apoc.load.json('http://127.0.0.1:28017/cvedb/cves/') YIELD value
UNWIND value.rows as cveData
RETURN cveData._id LIMIT 1;

使用“ apoc.load.json”将json加载到Neo4j中：数据检索不完整

2 个答案: