| --- |
| name: Soft Reference |
| route: /SoftReference |
| menu: Documentation |
| submenu: Misc |
| --- |
| |
| import themen from 'theme/styles/styled-colors'; |
| import * as theme from 'react-syntax-highlighter/dist/esm/styles/hljs'; |
| import SyntaxHighlighter from 'react-syntax-highlighter'; |
| |
| # Entity Attribute Option: SoftReference |
| |
| #### Background |
| |
| Entity attributes are specified using attribute definitions. An attributes' persistence strategy is determined by based on their type. |
| |
| Primitive types are persisted as properties within the vertex of their parent. |
| |
| Non-primitive attributes get a vertex of their own and edge is created between the parent the child to establish ownership. |
| |
| Attribute with _isSoftReference_ option set to _true_, is non-primitive attribute that gets treatment of a primitive attribute. |
| |
| #### Specification |
| |
| Below is an example of using the new attribute option. |
| |
| <SyntaxHighlighter wrapLines={true} language="json" style={theme.dark}> |
| {`"attributeDefs": [ |
| { |
| "name": "replicatedFrom", |
| "typeName": "array<AtlasServer>", |
| "cardinality": "SET", |
| "isIndexable": false, |
| "isOptional": true, |
| "isUnique": false, |
| "options": { |
| "isSoftReference": "true" |
| } |
| },...]`} |
| </SyntaxHighlighter> |
