# Interface ComponentSelectionRules

public interface ComponentSelectionRules
Represents a container for component selection rules. Rules can be applied as part of the resolutionStrategy of a configuration and individual components can be explicitly accepted or rejected by rule. Components that are neither accepted or rejected will be subject to the default version matching strategies.

        configurations {
            conf {
                resolutionStrategy {
                    componentSelection {
                        all { ComponentSelection selection ->
                            if (selection.candidate.module == 'someModule' && selection.candidate.version == '1.1') {
                                selection.reject("bad version '1.1' for 'someModule'")
                            }
                        }
                        all { ComponentSelection selection ->
                            if (selection.candidate.module == 'someModule' && selection.getDescriptor(IvyModuleDescriptor)?.branch == 'testing') {
                                if (selection.metadata == null || selection.metadata.status != 'milestone') {
                                    selection.reject("only use milestones for someModule:testing")
                                }
                            }
                        }
                        withModule("org.sample:api") { ComponentSelection selection ->
                            if (selection.candidate.version == "1.1") {
                                selection.reject("known bad version")
                            }
                        }
                    }
                }
            }
        }

- ## Method Summary

  Modifier and Type
  Method
  Description
  `ComponentSelectionRules`
  `all(Closure<?> closure)`
  Adds a component selection rule that will apply to all resolved components.
  `ComponentSelectionRules`
  `all(Object ruleSource)`
  Deprecated.
  use `all(Action)` instead.
  `ComponentSelectionRules`
  `all(Action<? super ComponentSelection> selectionAction)`
  Adds a simple component selection rule that will apply to all resolved components.
  `ComponentSelectionRules`
  `withModule(Object id, Closure<?> closure)`
  Adds a component selection rule that will apply to the specified module.
  `ComponentSelectionRules`
  `withModule(Object id, Object ruleSource)`
  Deprecated.
  use `withModule(Object,Action)` instead.
  `ComponentSelectionRules`
  `withModule(Object id, Action<? super ComponentSelection> selectionAction)`
  Adds a component selection rule that will apply to the specified module.

- ## Method Details

  - ### all

    ComponentSelectionRules all(Action<? super ComponentSelection> selectionAction)
    Adds a simple component selection rule that will apply to all resolved components. Each rule will receive a `ComponentSelection` object as an argument.
    Parameters:
      `selectionAction` - the Action that implements a rule to be applied
    Returns:
      this

  - ### all

    ComponentSelectionRules all(@DelegatesTo(ComponentSelection.class) Closure<?> closure)
    Adds a component selection rule that will apply to all resolved components. Each rule will receive a `ComponentSelection` object as an argument.
    Parameters:
      `closure` - the Closure that implements a rule to be applied
    Returns:
      this

  - ### all

    @Deprecated ComponentSelectionRules all(Object ruleSource)
    Deprecated.
    use `all(Action)` instead.
    Adds a rule-source backed component selection rule that will apply to all resolved components. The ruleSource provides the rule as exactly one rule method annotated with `Mutate`. This rule method:
    - must return void.
    - must have `ComponentSelection` as its parameter.
    Parameters:
      `ruleSource` - an instance providing a rule implementation
    Returns:
      this

  - ### withModule

    ComponentSelectionRules withModule(Object id, Action<? super ComponentSelection> selectionAction)
    Adds a component selection rule that will apply to the specified module. Each rule will receive a `ComponentSelection` object as an argument.
    Parameters:
      `id` - the module to apply this rule to in "group:module" format or as a `ModuleIdentifier`
      `selectionAction` - the Action that implements a rule to be applied
    Returns:
      this

  - ### withModule

    ComponentSelectionRules withModule(Object id, @DelegatesTo(ComponentSelection.class) Closure<?> closure)
    Adds a component selection rule that will apply to the specified module. Each rule will receive a `ComponentSelection` object as an argument.
    Parameters:
      `id` - the module to apply this rule to in "group:module" format or as a `ModuleIdentifier`
      `closure` - the Closure that implements a rule to be applied
    Returns:
      this

  - ### withModule

    @Deprecated ComponentSelectionRules withModule(Object id, Object ruleSource)
    Deprecated.
    use `withModule(Object,Action)` instead.
    Adds a rule-source backed component selection rule that will apply to the specified module. The ruleSource provides the rule as exactly one rule method annotated with `Mutate`. This rule method:
    - must return void.
    - must have `ComponentSelection` as its parameter.
    Parameters:
      `id` - the module to apply this rule to in "group:module" format or as a `ModuleIdentifier`
      `ruleSource` - an instance providing a rule implementation
    Returns:
      this