Children

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Children is a field on the Entity root type that represents the entity's associated child records. Children is an array of type Entity, and is specified by passing a char type ID parameter.

{
    entity(id: 10, charTypeId: 4) {
       children(charTypeId: 3) {
            items {
                 id
                 title
                 template {
                      templateId
                 }
            }
       }   
    }
}

The Children field is especially powerful because it allows you to traverse a record's hierarchy. You can include multiple Children fields for each entity to represent different char types, and each Children Entity can have its own Children field. These Children fields can be chained together to traverse an entire records hierarchy.

In the below example, we retrieve a Deal record, it's child Table records, and the Catalog records that are associated to each of those Table records.

{
    entity(id: 10, charTypeId: 4) {
        children(charTypeId: 5) {
            items {
                id
                title
                template {
                    templateId
                }
                children(charTypeId: 1) {
                    items {
                        id
                        title
                        template {
                            templateId
                        }
                    }
                }
            }
        }    
    }
}

Response:

{
    "data": {
        "entity": {
            "children": {
                "items": [
                    {
                        "id": 500,
                        "title": "Table 1",
                        "template": {
                            "templateId": 1
                        }
                        "children": {
                            "items": [
                                {
                                    "id": 100,
                                    "title": "Catalog 1",
                                    "template": {
                                        "templateId": 1
                                    }
                                },
                                {
                                    "id": 101,
                                    "title": "Catalog 2",
                                    "template": {
                                        "templateId": 2
                                    }
                                }
                            ]
                        }
                    },
                    {
                        "id": 501,
                        "title": "Table 2",
                        "template": {
                            "templateId": 2
                        }
                        "children": {
                            "items": []
                        }
                    }
                ]
            }
        }
    }
}

Aliasing

When including multiple Children fields, in order to keep track of what a certain Children field represents, you can add an Alias. Adding an alias to a field will rename the response Children field with the desire alias name.

In the below example, the alias rights has been added to the Children field where char type ID = 3, and the alias tables has been added to the Children field where char type ID = 5. You can see in the response that these two fields have been replaced with their respective aliases.

{
    entity(id: 10, charTypeId: 4) {
       rights: children(charTypeId: 3) {
            items {
                 id
                 title
                 template {
                      templateId
                 }
            }
       } 
       tables: children(charTypeId: 5) {
            items {
                 id
                 title
                 template {
                      templateId
                 }
            }
       }    
    }
}

Response:

Paging

To limit response sizes, the Children field utilizes paging. To page through the children records, use the skip and take parameters:

The default page size is 50.

There are also additional fields in the request that help to identify the total number of Children records (totalCount), if a previous page exists (hasPreviousPage), and if a next page exists (hasNextPage). hasPreviousPage and hasNextPage are nested in a pageInfo object on the Children object:

Response:

{
    "data": {
        "entity": {
            "id": 10,
            "title": "Deal 1",
            "template": {
                "templateId": 1
            },
            "rights": {
                "totalCount": 24,
                "pageInfo": {
                    "hasPreviousPage": true,
                    "hasNextPage": true
                },
                "items": [
                    {
                        "id": 100,
                        "template": {
                            "templateId": 1
                        },
                        "title": "Rights 1"
                    },
                    {
                        "id": 101,
                        "template": {
                            "templateId": 2
                        },
                        "title": "Rights 2"
                    }
                ]
            }
        }
    }
}

Using these fields and parameters, you can page through the Children in subsequent requests, using logic similar to:

if (pageInfo.hasNextPage)

skip = skip + take

Filtering

Children can be filtered by using a special parameter object called where:

{
    entity(id: 10, charTypeId: 4) {
       rights: children(charTypeId: 3, where: {templateId: {eq: 1}}) {
            items {
                 id
                 title
                 template {
                      templateId
                 }
            }
       }  
    }
}

All of the following Entity fields can be filtered on in the Children collection:

  • title

  • templateId

  • statusId

  • createdBy

  • createdDate

  • lastUpdatedBy

  • lastUpdatedDate

  • statusUpdatedBy

  • statusUpdatedDate

String Filtering

String fields (title) can be filtered using the following operators:

Comparable Filtering

Field types of bool, int, and DateTime such as templateId, statusId, createdBy, createdDate, lastUpdatedBy, lastUpdatedDate, statusUpdatedBy, statusUpdatedDate can be filtered using the following operators:

and / or Filtering

All of the above operators can be combined using the and & or operators:

Sorting

To sort the records in the response by a specific field, specify an order parameter:

{
    entity(id: 10, charTypeId: 4) {
       rights: children(charTypeId: 3, order: [{ lastUpdatedDate: DESC }]) {
            items {
                 id
                 title
                 template {
                      templateId
                 }
            }
       }  
    }
}

You can sort by the following fields:

  • id

  • title

  • createdBy

  • createdDate

  • lastUpdatedBy

  • lastUpdatedDate

  • statusUpdatedBy

  • statusUpdatedDate

You can sort each of the fields above either ascending using ASC or descending using DESC.

You can also sort on a field and then by another field:

{
    entity(id: 10, charTypeId: 4) {
       rights: children(charTypeId: 3, order: [{ lastUpdatedDate: DESC }, { id: ASC }]) {
            items {
                 id
                 title
                 template {
                      templateId
                 }
            }
       }  
    }
}

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