TemplateRootMappingRule (MPS.Core (JetBrains MPS 2019.1.0))

All Superinterfaces:

TemplateRule, TemplateRuleForConcept, TemplateRuleWithCondition

All Known Implementing Classes:

MapRootRuleBase, TemplateRootMappingRuleInterpreted
```
public interface TemplateRootMappingRule
extends TemplateRuleWithCondition, TemplateRuleForConcept
```
Rule for an input node (not necessarily model root) to get transformed into a new root node(s) Evgeny Gryaznov, 10/27/10

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Collection<SNode>`	`apply(TemplateContext context)`	Try to apply rule in the given context
`boolean`	`keepSourceRoot()`

Methods inherited from interface jetbrains.mps.generator.runtime.TemplateRule
getRuleNode

Methods inherited from interface jetbrains.mps.generator.runtime.TemplateRuleForConcept
applyToInheritors, getApplicableConcept

Methods inherited from interface jetbrains.mps.generator.runtime.TemplateRuleWithCondition
isApplicable

- Method Detail
  - apply
```
@Nullable
Collection<SNode> apply(@NotNull
                        TemplateContext context)
                 throws GenerationException
```
    Try to apply rule in the given context
    
    Parameters:
    
    context - execution context
    
    Returns:
    
    null if this rule could not process input, collection of new root nodes otherwise
    
    Throws:
    
    GenerationException - report a failure/cancellation. Note, DismissTopMappingRuleException nor AbandonRuleInputException are not expected to come from this rule
    
    Since:
    
    3.3
  - keepSourceRoot
```
boolean keepSourceRoot()
```