The Open Data Model api is available at %base_url%/opendatamodel where %base_url% is the base Data Hub API url (api.opinum.com for Opinum SAAS Data Hub).

Here is the way to use some of the API samples (/sample/{sampleKind}) using the API

1. Store the schema

Schema:

type Query { 
    VariableGroups : [VARIABLE_GROUP]
    SourceGroups : [SOURCE_GROUP]
}

type VARIABLE_GROUP {
   Key: String
   Type: String
   AllVariables: [DataHubVariable] @traverse_relation(Type: GROUP_MEMBER Depth: 5) 
   GroupVariables: [DataHubVariable] @direct_relation(Type: GROUP_MEMBER) 
   SubGroups: [VARIABLE_GROUP] @direct_relation(Type: GROUP_OF)
}
type SOURCE_GROUP {
   Key: String
   Type: String
   AllSources: [DataHubSource] @traverse_relation(Depth: 5) 
   GroupSources: [DataHubSource] @direct_relation(Type: GROUP_MEMBER) 
   SubGroups: [SOURCE_GROUP] @direct_relation(Type: GROUP_OF)
}

PUT the schema as the default one through /storage/schema/default

2. Create nodes and relations

Mutation:

mutation {
    CreateNodesAndRelations(
        Nodes: [
			{ 
            KeyProperty: ""Key"", 
            KeyValue: ""Custom variables1"",
            NodeType: ""VARIABLE_GROUP"" ,
            Properties : [ {Name : ""Type"",Value: ""Custom1""}]}
        ],
        Relations: [
			{
            SourceNode : {
                KeyProperty: ""Key"", 
                KeyValue: ""Custom variables1"", 
                NodeType: ""VARIABLE_GROUP""},
            DestinationNodes: {
                NodeSelector : ""PARENT(DataHubSource,Id) = 10 AND Name LIKE 'test'"", 
                NodeType: ""DataHubVariable"" },
            RelationType : ""GROUP_MEMBER"",
            Properties : [ { Name : ""FromDate"", Value : ""2021-01-01""}, { Name : ""ToDate"", Value : ""2022-12-31""}]
        }]
) { NumberOfNodes NumberOfRelations}}

Apply the mutation through /mutation

4. Query the nodes

query {VariableGroups { Key }}
query {VariableGroups { Key GroupVariables {Id Name}} }
query {VariableGroups @where(Node: ""Type = 'Custom1'"") { Key GroupVariables {Id Name}} }
query {VariableGroups @where(Node: ""Key = 'Custom variables1'"") { Key GroupVariables {Id Name }} }
query {VariableGroups @where(Node: ""Type = 'Custom1' AND Key = 'Custom variables1'"") { Key GroupVariables {Id Name }} }
query {VariableGroups @where(Node: ""Type = 'Custom1'"") { Key GroupVariables @where(Node: ""Id = 100"") {Id Name}} }
query {VariableGroups @where(Node: ""Type = 'Custom1'"") { Key GroupVariables @where(Node: ""Id = 101"") {Id Name}} }

Run query through /query