Import a JSON with conditions

Neo4j Graph Platform Import / Export
1

Hello there, I'm trying to import a JSON with some conditions. The JSON file is a little complex, let's see why I'm saying this.

This is the file content.

{
"categories": [
{
"name": "Index Crime",
"sub_categories": [
{
"code": "01A",
"description": "Homicide 1st & 2nd Degree"
}
]
},
{
"name": "Non-Index Crime",
"sub_categories": "none"
},
]
}

As you can see, there is a sub-category that's an object composed by two values, and the other sub-category has the value none.
I want to import the first one as a node with the value 01A, and the other one, I don't want to create any node.
Is this possible, or do you see any other solution?

Thank you.

2

Hi

Small issue with your JSON, so I removed one comma

{
	"categories": [{
			"name": "Index Crime",
			"sub_categories": [{
				"code": "01A",
				"description": "Homicide 1st & 2nd Degree"
			}]
		},
		{
			"name": "Non-Index Crime",
			"sub_categories": "none"
		}
	]
}

You can use apoc.map.clean to clean your data from null-place holders
http://neo4j-contrib.github.io/neo4j-apoc-procedures/3.5/utilities/map-functions/

WITH '14289.json' as filename
CALL apoc.load.json(filename) YIELD value AS v
UNWIND v.categories as categories
WITH apoc.map.clean(categories,[], ['none']) as categories
UNWIND categories.sub_categories as subcategory
RETURN categories.name as category, subcategory.code

Table
Text
Code
╒═════════════╤══════════════════╕
│"category"   │"subcategory.code"│
╞═════════════╪══════════════════╡
│"Index Crime"│"01A"             │
└─────────────┴──────────────────┘
3

Thank you Paul for your help!!