Learning > presentation > hierarchies > Root Node Rule

RootNodeRule

Based on RootNodeRule interface.

Root node rules are used to define nodes that are displayed at the root hierarchy level.

Attributes

Name	Required?	Type	Default	Meaning
Placement attributes
`priority`	No	`number`	`1000`	Defines the order in which presentation rules are evaluated.
`condition`	No	ECExpression	`""`	Defines a condition for the rule, which needs to be met in order to execute it.
`requiredSchemas`	No	`RequiredSchemaSpecification[]`	`[]`	Specifications that define schema requirements for the rule to take effect.
`onlyIfNotHandled`	No	`boolean`	`false`	Should this rule be ignored if there is already an existing rule with a higher priority.
`stopFurtherProcessing`	No	`boolean`	`false`	Stop processing rules that have lower priority. Used in cases when recursion suppression is needed. Note: If this flag is set, `specifications` and `subConditions` are not processed.
Branch content attributes
`autoExpand`	No	`boolean`	`false`	Automatically expand nodes created by this rule.
`specifications`	No	`ChildNodeSpecification[]`	`[]`	Specifications that define what content the rule returns.
`customizationRules`	No	`CustomizationRule[]`	`[]`	Customization rules that are applied for the content returned by this rule.
`subConditions`	No	`SubCondition[]`	`[]`	Specifies child node rules which are only used when specific condition is satisfied

Example

{
  "ruleType": "RootNodes",
  "priority": 999,
  "requiredSchemas": [{ "name": "BisCore", "minVersion": "1.0.1" }],
  "stopFurtherProcessing": true,
  "autoExpand": true,
  "specifications": [],
  "customizationRules": []
}

Last Updated: 12 June, 2024