Jolt Spec for nested arrays - json

Question

I have a Array of Arrays which have to be transformed using Jolt as shown below
Input:
{
"ticket_fields": [
{
"url": "/api/v2/ticket_fields/1.json",
"id": 1,
"type": "subject",
"title": "Subject",
"raw_title": "Subject",
"description": "",
"active": true,
"required": false,
"regexp_for_validation": null,
"removable": false,
"agent_description": null,
"creator_user_id": -1,
"creator_app_name": null
},
{
"url": "/api/v2/ticket_fields/2.json",
"id": 2,
"type": "status",
"title": "Status",
"raw_title": "Status",
"description": "Request status",
"raw_description": "Request status",
"position": 3,
"active": true,
"required": false,
"regexp_for_validation": null,
"removable": false,
"system_field_options": [
{
"name": "Open",
"value": "open"
},
{
"name": "Pending",
"value": "pending"
},
{
"name": "On-hold",
"value": "hold"
},
{
"name": "Solved",
"value": "solved"
}
],
"creator_user_id": -1,
"creator_app_name": null
},
{
"url": "/api/v2/ticket_fields/3.json",
"id": 3,
"type": "tagger",
"title": "Test",
"raw_title": "Test",
"description": "",
"raw_description": "",
"active": true,
"required": false,
"regexp_for_validation": null,
"removable": true,
"agent_description": null,
"custom_field_options": [
{
"id": 1,
"name": "Option1",
"value": "Option1",
"default": false
},
{
"id": 2,
"name": "Option2",
"value": "Option2",
"default": false
},
{
"id": 3,
"name": "Option3",
"value": "Option3",
"default": false
}
],
"creator_user_id": 332,
"creator_app_name": null
}
]
}
Jolt Spec:
[
{
"operation": "shift",
"spec": {
"ticket_fields": {
"*": {
"id": "field_list[&1].crm_field_identifier",
"title": "field_list[&1].name",
"required": "field_list[&1].required",
"description": "field_list[&1].description",
"creator_user_id": {
"-1": {
"#(2,type)": [
"field_list[&3].target_property",
"field_list[&3].ui_property"
],
"#false": "field_list[&3].is_custom_field",
"system_field_options": {
"*": {
"$": "field_list[&5].options[&1].name",
"#": "field_list[&5].options[&1].value"
}
}
},
"*": {
"#(2,id)": "field_list[&3].target_property",
"#(2,type)": "field_list[&3].ui_property",
"#true": "field_list[&3].is_custom_field",
"custom_field_options": {
"*": {
"$": "field_list[&5].options[&1].name",
"#": "field_list[&5].options[&1].value"
}
}
}
},
"regexp_for_validation": "field_list[&1].validation_rules.ui_regex"
}
}
}
}
]
Current O/p:
{
"field_list": [
{
"crm_field_identifier": 1,
"name": "Subject",
"required": false,
"description": "",
"target_property": "subject",
"ui_property": "subject",
"is_custom_field": "false",
"validation_rules": {
"ui_regex": null
}
},
{
"crm_field_identifier": 2,
"name": "Status",
"required": false,
"description": "Request status",
"target_property": "status",
"ui_property": "status",
"is_custom_field": "false",
"validation_rules": {
"ui_regex": null
}
},
{
"crm_field_identifier": 3,
"name": "Test",
"required": false,
"description": "",
"target_property": 3,
"ui_property": "tagger",
"is_custom_field": "true",
"validation_rules": {
"ui_regex": null
}
}
]
}
Expected O/P
{
"field_list": [
{
"crm_field_identifier": 1,
"name": "Subject",
"required": false,
"description": "",
"target_property": "subject",
"ui_property": "subject",
"is_custom_field": "false",
"validation_rules": {
"ui_regex": null
},
"options": null
},
{
"crm_field_identifier": 2,
"name": "Status",
"required": false,
"description": "Request status",
"target_property": "status",
"ui_property": "status",
"is_custom_field": "false",
"validation_rules": {
"ui_regex": null
},
"options": [
{
"name": "Open",
"value": "open"
},
{
"name": "Pending",
"value": "pending"
},
{
"name": "On-hold",
"value": "hold"
},
{
"name": "Solved",
"value": "solved"
}
]
},
{
"crm_field_identifier": 3,
"name": "Test",
"required": false,
"description": "",
"target_property": 3,
"ui_property": "tagger",
"is_custom_field": "true",
"validation_rules": {
"ui_regex": null
},
"options": [
{
"name": "Option1",
"value": "Option1"
},
{
"name": "Option2",
"value": "Option2"
},
{
"name": "Option3",
"value": "Option3"
}
]
}
]
}
Though there are conditional rules to map either "system_field_options" or "custom_field_options" to field_list.options in O/P they are not being populated. Any help as to why this didnt work and working solution is appreciated

Answer 1

You can use this shift transformation spec
[
{
"operation": "shift",
"spec": {
"ticket_fields": {
"*": {
"id": "field_list[&1].crm_field_identifier",
"title": "field_list[&1].name",
"required|description": "field_list[&1].&",
"regexp_for_validation": "field_list[&1].validation_rules.ui_regex",
"#false": "field_list[&3].is_custom_field",
"*_field_*": {
"*": {
"name|value": "field_list[&3].&(2,2).[&1].&" // restrict only to two attributes
}
}
}
}
}
}
]
In your case, should need to replace the tags
"system_field_options" with "#(2,system_field_options)" and
"custom_field_options" with "#(2,custom_field_options)"
in order to able to reach their original level.