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在下面的查询（我从网上找到的一个我修改）。我正在使用APOC创建14个节点，并且我将会是12个边（连接两行中的每个节点）。即如果你有14个节点，然后分成两列，每列7个项目，你只需要6条线路将它们连接在一起。Neo4J Cypher查询创建比预期更多的链接
无论如何，代码使用APOC来读取JSON文件，并且它正在按照预期创建节点。但我得到了79个边缘。必须有一些关于CYPHER或UNWIND我不明白。
您可以清楚地看到，在JSON文件中，管道阵列中只有12个对象。
CALL apoc.load.json("file:///G:/wwwroot/DataFlow/graph.json") YIELD value AS row
WITH row, row.graph.nodes AS nodes
UNWIND nodes AS node
CALL apoc.create.node(node.labels, node.properties) YIELD node AS n
WITH row
UNWIND row.graph.pipes AS rel
MATCH (a) WHERE a.key = rel.start
MATCH (b) WHERE b.key = rel.end
CALL apoc.create.relationship(a, rel.type, rel.properties, b) YIELD rel AS r
RETURN *
{
"graph" : {
"nodes" : [{
"id" : "HW.SCIM",
"labels" : [
"Actor"
],
"properties" : {
"key" : "HW.SCIM",
"partition" : "Hardware",
"CSC" : "HW",
"name" : "SCIM",
"rate" : 10,
"caption" : "SCIM"
}
}, {
"id" : "HW.GPS",
"labels" : [
"Actor"
],
"properties" : {
"key" : "HW.GPS",
"partition" : "Hardware",
"CSC" : "HW",
"name" : "GPS",
"rate" : 50,
"caption" : "GPS"
}
}, {
"id" : "HW.SCIM-Channel",
"labels" : [
"Channel"
],
"properties" : {
"key" : "HW.SCIM-Channel",
"wordLength" : 300,
"channelType" : "Partition",
"timeStamp" : "",
"writer" : ""
}
}, {
"id" : "HW.GPS-Channel",
"labels" : [
"Channel"
],
"properties" : {
"key" : "HW.GPS-Channel",
"wordLength" : 200,
"channelType" : "Partition",
"timeStamp" : "",
"writer" : ""
}
}, {
"id" : "Platform.SCIM",
"labels" : [
"Actor"
],
"properties" : {
"key" : "Platform.SCIM",
"partition" : "Platform",
"CSC" : "Platform",
"name" : "SCIM",
"rate" : 10,
"caption" : "Platform SCIM"
}
}, {
"id" : "Platform.GPS",
"labels" : [
"Actor"
],
"properties" : {
"key" : "Platform.GPS",
"partition" : "Platform",
"CSC" : "Platform",
"name" : "GPS",
"rate" : 50,
"caption" : "Platform GPS"
}
}, {
"id" : "Platform.SCIM-Channel",
"labels" : [
"Channel"
],
"properties" : {
"key" : "Platform.SCIM-Channel",
"wordLength" : 300,
"channelType" : "Partition",
"timeStamp" : "",
"writer" : ""
}
}, {
"id" : "Platform.GPS-Channel",
"labels" : [
"Channel"
],
"properties" : {
"key" : "Platform.GPS-Channel",
"wordLength" : 200,
"channelType" : "Partition",
"timeStamp" : "",
"writer" : ""
}
}, {
"id" : "ALFSW.SCIM",
"labels" : [
"Actor"
],
"properties" : {
"key" : "ALFSW.SCIM",
"partition" : "Application",
"CSC" : "Application",
"name" : "SCIM",
"rate" : 10,
"caption" : "App SCIM"
}
}, {
"id" : "ALFSW.GPS",
"labels" : [
"Actor"
],
"properties" : {
"key" : "ALFSW.GPS",
"partition" : "Application",
"CSC" : "Application",
"name" : "GPS",
"rate" : 50,
"caption" : "App GPS"
}
}, {
"id" : "ALFSW.SCIM-Channel",
"labels" : [
"Channel"
],
"properties" : {
"key" : "ALFSW.SCIM-Channel",
"wordLength" : 300,
"channelType" : "Partition",
"timeStamp" : "",
"writer" : ""
}
}, {
"id" : "ALFSW.GPS-Channel",
"labels" : [
"Channel"
],
"properties" : {
"key" : "ALFSW.GPS-Channel",
"wordLength" : 200,
"channelType" : "Partition",
"timeStamp" : "",
"writer" : ""
}
}, {
"id" : "GNC.SCIM",
"labels" : [
"Actor"
],
"properties" : {
"key" : "GNC.SCIM",
"partition" : "GNC",
"CSC" : "MediumRate",
"name" : "SCIM",
"rate" : 10,
"caption" : "GNC Medium Rate"
}
}, {
"id" : "GNC.GPS",
"labels" : [
"Actor"
],
"properties" : {
"key" : "GNC.GPS",
"partition" : "GNC",
"CSC" : "HighRate",
"name" : "GPS",
"rate" : 50,
"caption" : "GNC High Rate"
}
}
],
"pipes" : [{
"type" : "Pipe",
"start" : "HW.SCIM",
"end" : "HW.SCIM-Channel",
"properties" : {
"flow" : "OUT"
}
}, {
"type" : "Pipe",
"start" : "HW.GPS",
"end" : "HW.GPS-Channel",
"properties" : {
"flow" : "OUT"
}
}, {
"type" : "Pipe",
"start" : "Platform.SCIM",
"end" : "HW.SCIM-Channel",
"properties" : {
"flow" : "IN"
}
}, {
"type" : "Pipe",
"start" : "Platform.GPS",
"end" : "HW.GPS-Channel",
"properties" : {
"flow" : "IN"
}
}, {
"type" : "Pipe",
"start" : "Platform.SCIM",
"end" : "Platform.SCIM-Channel",
"properties" : {
"flow" : "OUT"
}
}, {
"type" : "Pipe",
"start" : "Platform.GPS",
"end" : "Platform.GPS-Channel",
"properties" : {
"flow" : "OUT"
}
}, {
"type" : "Pipe",
"start" : "ALFSW.SCIM",
"end" : "Platform.SCIM-Channel",
"properties" : {
"flow" : "IN"
}
}, {
"type" : "Pipe",
"start" : "ALFSW.GPS",
"end" : "Platform.GPS-Channel",
"properties" : {
"flow" : "IN"
}
}, {
"type" : "Pipe",
"start" : "ALFSW.SCIM",
"end" : "ALFSW.SCIM-Channel",
"properties" : {
"flow" : "OUT"
}
}, {
"type" : "Pipe",
"start" : "ALFSW.GPS",
"end" : "ALFSW.GPS-Channel",
"properties" : {
"flow" : "OUT"
}
}, {
"type" : "Pipe",
"start" : "GNC.SCIM",
"end" : "ALFSW.SCIM-Channel",
"properties" : {
"flow" : "IN"
}
}, {
"type" : "Pipe",
"start" : "GNC.GPS",
"end" : "ALFSW.GPS-Channel",
"properties" : {
"flow" : "IN"
}
}
]
}
}
仅供参考：WITH中的表达式必须使用别名（使用AS）（第4行，第11列（偏移量：190）） “WITH row，count（*）” –
我想我明白这一点，但让我看看我是否理解你的意见重申他们的方式，我听到他们： 1.通过添加计数（*）你实际上是做一个独特的和结束放松，如下所示：http://stackoverflow.com/questions/30744331/end-unwind-statement-in-a-cypher-query –
2 ，你建议在Actor和Pipe标签中添加一个Label，使它们都是：Actor：Node和：Pipe：Node，这会自动为key属性添加一个索引，还是需要添加？ –