Version: 0.1.0

NodeTypes

NodeTypes are schema definitions that specify the structure, validation rules, and behavior of nodes. They're like classes in object-oriented programming—defining properties, constraints, and inheritance relationships for your content.

What is a NodeType?

A NodeType defines:

Property schema: Required and optional fields with data types
Validation rules: Constraints, patterns, and default values
Metadata flags: Versioning, publishing, and indexing behavior
Inheritance: Extend other NodeTypes (object-oriented style)
Composition: Mix in archetypes (trait-based style)
Allowed children: Hierarchical content restrictions

Example NodeType definition:

name: blog:Article
properties:
  title:
    type: string
    required: true
    maxLength: 200
  slug:
    type: string
    required: true
    pattern: "^[a-z0-9-]+$"
  author:
    type: string
    required: true
  body:
    type: richtext
  published:
    type: boolean
    default: false
  publishedAt:
    type: datetime
  tags:
    type: array
    items:
      type: string
versionable: true
indexable: true

Creating NodeTypes

NodeTypes are managed via the HTTP API or Admin Console, not SQL. They are stored in the raisin:system workspace.

Using the Admin Console

Navigate to your repository → NodeTypes
Click Create NodeType
Define the schema visually or in YAML/JSON

Using the HTTP API

curl -X POST http://localhost:8080/api/management/myrepo/main/nodetypes \
  -H "Content-Type: application/json" \
  -d '{
    "node_type": {
      "name": "blog:Article",
      "properties": {
        "title": {"type": "string", "required": true},
        "body": {"type": "richtext"},
        "published": {"type": "boolean", "default": false}
      },
      "versionable": true,
      "indexable": true
    },
    "commit": {
      "message": "Create blog:Article NodeType",
      "actor": "admin"
    }
  }'

Once defined, nodes can use this NodeType:

-- Create a node with this NodeType
INSERT INTO default (path, node_type, properties) VALUES (
  '/content/blog/my-post',
  'blog:Article',
  '{
    "title": "My First Post",
    "body": "<p>Content here...</p>",
    "published": false
  }'
);

RaisinDB validates the properties against the schema automatically.

Property Types

Primitive Types

Type	Description	Example
`string`	Text field	`"Hello World"`
`number`	Integer or float	`42`, `3.14`
`boolean`	True/false	`true`, `false`
`datetime`	ISO 8601 timestamp	`"2024-01-15T10:30:00Z"`
`date`	Date only	`"2024-01-15"`
`time`	Time only	`"14:30:00"`

Complex Types

Type	Description	Example
`richtext`	HTML content	`"<p>Rich <strong>text</strong></p>"`
`json`	Arbitrary JSON	`{"key": "value"}`
`array`	List of items	`["tag1", "tag2"]`
`object`	Nested object	`{"address": {"city": "NYC"}}`

Reference Types

Type	Description	Example
`reference`	Link to another node (path)	`"/content/authors/jane"`
`media`	Media file reference	`"/media/images/header.jpg"`

Specialized Types

Type	Description	Example
`email`	Email address	`"user@example.com"`
`url`	Web URL	`"https://example.com"`
`uuid`	UUID identifier	`"550e8400-e29b-41d4-a716-446655440000"`
`geo`	Geospatial coordinates	`{"lat": 40.7128, "lng": -74.0060}`

Property Constraints

Required Fields

title:
  type: string
  required: true

Default Values

published:
  type: boolean
  default: false
createdDate:
  type: datetime
  default: "NOW()"

String Constraints

title:
  type: string
  minLength: 10
  maxLength: 200
  pattern: "^[A-Z].*"
slug:
  type: string
  pattern: "^[a-z0-9-]+$"

Number Constraints

age:
  type: number
  minimum: 0
  maximum: 120
price:
  type: number
  minimum: 0
  multipleOf: 0.01

Array Constraints

tags:
  type: array
  items:
    type: string
  minItems: 1
  maxItems: 10
  uniqueItems: true

Enum Values

status:
  type: string
  enum: [draft, review, published, archived]
priority:
  type: number
  enum: [1, 2, 3, 4, 5]

Inheritance with Extend

NodeTypes can extend other NodeTypes (single inheritance):

Base NodeType:

name: content:BaseContent
properties:
  title:
    type: string
    required: true
  description:
    type: string
  created:
    type: datetime
    default: "NOW()"

Extended NodeType:

name: blog:Article
extends: content:BaseContent
properties:
  body:
    type: richtext
    required: true
  author:
    type: string
    required: true
  published:
    type: boolean
    default: false

blog:Article inherits all properties from content:BaseContent and adds its own.

Composition with Mixins

Use archetypes as mixins for trait-based composition:

Archetypes (reusable property sets):

name: Publishable
properties:
  published:
    type: boolean
  publishedAt:
    type: datetime

NodeType with mixins:

name: blog:Article
mixins:
  - Publishable
  - Taggable
  - Authorable
properties:
  title:
    type: string
    required: true
  body:
    type: richtext

The NodeType gets all properties from all mixins plus its own properties.

Learn more: Archetypes

Metadata Flags

Control node behavior with metadata flags:

Versionable

versionable: true

When enabled:

Every change creates a new revision with HLC timestamp
Full revision history is maintained
Time-travel queries are supported
Nodes can be rolled back

Indexable

indexable: true

When enabled:

Nodes are included in full-text search indexes
Automatically indexed on creation/update
Searchable with FULLTEXT_SEARCH() function

Auditable

auditable: true

When enabled:

All changes logged to audit table
Includes user, timestamp, operation
For compliance and security requirements

Hierarchical Constraints

Control which NodeTypes can be children of others:

name: content:Folder
allowed_children:
  - blog:Article
  - content:Folder
properties:
  name:
    type: string
    required: true

RaisinDB enforces these constraints when creating nodes.

Querying NodeTypes

List NodeTypes via the API:

# List all NodeTypes
curl http://localhost:8080/api/management/myrepo/main/nodetypes

# Get a specific NodeType
curl http://localhost:8080/api/management/myrepo/main/nodetypes/blog:Article

# Get resolved NodeType (with inherited properties)
curl http://localhost:8080/api/management/myrepo/main/nodetypes/blog:Article/resolved

Or query the system workspace:

-- Query NodeTypes from the system workspace
SELECT path, properties->>'name' AS name
FROM "raisin:system"
WHERE node_type = 'raisin:NodeType';

Updating NodeTypes

Update via the HTTP API:

curl -X PUT http://localhost:8080/api/management/myrepo/main/nodetypes/blog:Article \
  -H "Content-Type: application/json" \
  -d '{
    "node_type": {
      "name": "blog:Article",
      "properties": {
        "title": {"type": "string", "required": true},
        "body": {"type": "richtext"},
        "published": {"type": "boolean", "default": false},
        "featured": {"type": "boolean", "default": false}
      },
      "versionable": true
    },
    "commit": {
      "message": "Add featured field to Article",
      "actor": "admin"
    }
  }'

Warning: Schema changes affect existing nodes. RaisinDB validates all nodes against the new schema.

Validation Errors

When creating or updating nodes, RaisinDB validates against the schema:

-- Missing required field
INSERT INTO default (path, node_type, properties) VALUES (
  '/content/blog/bad',
  'blog:Article',
  '{"body": "Content only"}'
);
-- Error: Required property 'title' is missing

-- Wrong type
INSERT INTO default (path, node_type, properties) VALUES (
  '/content/blog/bad',
  'blog:Article',
  '{"title": 123, "body": "Content"}'
);
-- Error: Property 'title' must be type 'string', got 'number'

-- Pattern violation
INSERT INTO default (path, node_type, properties) VALUES (
  '/content/blog/bad',
  'blog:Article',
  '{"title": "Title", "slug": "Invalid Slug!"}'
);
-- Error: Property 'slug' does not match pattern '^[a-z0-9-]+$'

Common Patterns

Content Types

name: blog:Article
properties:
  title:
    type: string
    required: true
  slug:
    type: string
    required: true
    pattern: "^[a-z0-9-]+$"
  body:
    type: richtext
  excerpt:
    type: string
    maxLength: 500
  author:
    type: reference
  category:
    type: reference
  tags:
    type: array
    items:
      type: string
  featuredImage:
    type: media
  published:
    type: boolean
  publishedAt:
    type: datetime
versionable: true
indexable: true

E-commerce Types

name: ecommerce:Product
properties:
  name:
    type: string
    required: true
  sku:
    type: string
    required: true
    pattern: "^[A-Z0-9-]+$"
  description:
    type: richtext
  price:
    type: number
    minimum: 0
    multipleOf: 0.01
  salePrice:
    type: number
    minimum: 0
  inventory:
    type: number
    minimum: 0
  images:
    type: array
    items:
      type: media
  category:
    type: reference
  published:
    type: boolean
versionable: true
indexable: true

User Profile Types

name: user:Profile
properties:
  username:
    type: string
    required: true
    pattern: "^[a-z0-9_]+$"
  email:
    type: email
    required: true
  displayName:
    type: string
  bio:
    type: string
    maxLength: 500
  avatar:
    type: media
  location:
    type: geo
  socialLinks:
    type: object
  preferences:
    type: json
versionable: false
auditable: true

Best Practices

Use namespaces: Prefix NodeType names with a namespace (e.g., blog:, ecommerce:)
Define constraints: Use required, pattern, min/max for data integrity
Enable versioning selectively: Only for content that needs audit trails
Use archetypes for shared properties: DRY principle with mixins
Index strategically: Only index fields you query frequently
Document your schemas: Use clear property names
Version your NodeTypes: Track schema changes in version control

Next Steps

Nodes - Create and query typed content
Archetypes - Build reusable property templates
Elements - Define UI components for forms
Data Modeling Guide - Build complex content models

What is a NodeType?​

Creating NodeTypes​

Using the Admin Console​

Using the HTTP API​

Property Types​

Primitive Types​

Complex Types​

Reference Types​

Specialized Types​

Property Constraints​

Required Fields​

Default Values​

String Constraints​

Number Constraints​

Array Constraints​

Enum Values​

Inheritance with Extend​

Composition with Mixins​

Metadata Flags​

Versionable​

Indexable​

Auditable​

Hierarchical Constraints​

Querying NodeTypes​

Updating NodeTypes​

Validation Errors​

Common Patterns​

Content Types​

E-commerce Types​

User Profile Types​

Best Practices​

Next Steps​

What is a NodeType?

Creating NodeTypes

Using the Admin Console

Using the HTTP API

Property Types

Primitive Types

Complex Types

Reference Types

Specialized Types

Property Constraints

Required Fields

Default Values

String Constraints

Number Constraints

Array Constraints

Enum Values

Inheritance with Extend

Composition with Mixins

Metadata Flags

Versionable

Indexable

Auditable

Hierarchical Constraints

Querying NodeTypes

Updating NodeTypes

Validation Errors

Common Patterns

Content Types

E-commerce Types

User Profile Types

Best Practices

Next Steps