Package org.apache.tapestry5.internal.services

## Interface ComponentDependencyRegistry

- All Known Implementing Classes:
    `ComponentDependencyRegistryImpl`

      public interface ComponentDependencyRegistry

  Internal service that registers direct dependencies between components (including components, pages and base classes). Even though methods receive `ComponentPageElement` parameters, dependencies are tracked using their fully qualified classs names.
  Since:
    5.8.3

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Interface | Description
    --- | --- | ---
    `static class` | `ComponentDependencyRegistry.DependencyType` | Enum class defining the types of dependency components, pages and mixins can have among them.

  - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `static java.lang.String` | `FILENAME` | Name of the file where the dependency information is stored between webapp runs.

  - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `clear()` | Clears all dependency information.
    `void` | `clear​(java.lang.String className)` | Clears all dependency information for a given component.
    `void` | `clear​(ComponentPageElement componentPageElement)` | Clears all dependency information for a given component.
    `boolean` | `contains​(java.lang.String className)` | Tells whether this registry already contans a given class name.
    `void` | `disableInvalidations()` | Tells this service to ignore invalidations in this thread.
    `void` | `enableInvalidations()` | Tells this service to stop ignoring invalidations in this thread.
    `java.util.Set<java.lang.String>` | `getClassNames()` | Returns the set of all class names in the registry.
    `java.util.Set<java.lang.String>` | `getDependencies​(java.lang.String className, ComponentDependencyRegistry.DependencyType type)` | Returns the fully qualified names of the direct dependencies of a given component and a given dependency type.
    `java.util.Set<java.lang.String>` | `getDependents​(java.lang.String className)` | Returns the fully qualified names of the direct dependencies of a given component.
    `java.util.Set<java.lang.String>` | `getRootClasses()` | Returns the set of all root classes (i.e.
    `boolean` | `isStoredDependencyInformationPresent()` | Returns whether stored dependency information is present.
    `void` | `listen​(InvalidationEventHub invalidationEventHub)` | Signs up this registry to invalidation events from a given hub.
    `void` | `register​(java.lang.Class<?> clasz)` | Register all the dependencies of a given class.
    `void` | `register​(ComponentPageElement componentPageElement)` | Register all the dependencies of a given component.
    `void` | `register​(PlasticField plasticField, MutableComponentModel componentModel)` | Register a dependency of a component class with another through annotations such as `InjectPage`, `InjectComponent` and `Component`.
    `void` | `writeFile()` | Writes the current component dependency data to a file so it can be reused in a new run later.

- - ### Field Detail

    - #### FILENAME

          static final java.lang.String FILENAME

      Name of the file where the dependency information is stored between webapp runs.
      See Also:
        Constant Field Values

  - ### Method Detail

    - #### register

          void register​(java.lang.Class<?> clasz)

      Register all the dependencies of a given class.

    - #### register

          void register​(ComponentPageElement componentPageElement)

      Register all the dependencies of a given component.

    - #### register

          void register​(PlasticField plasticField,
                        MutableComponentModel componentModel)

      Register a dependency of a component class with another through annotations such as `InjectPage`, `InjectComponent` and `Component`.

    - #### clear

          void clear​(java.lang.String className)

      Clears all dependency information for a given component.

    - #### clear

          void clear​(ComponentPageElement componentPageElement)

      Clears all dependency information for a given component.

    - #### clear

          void clear()

      Clears all dependency information.

    - #### getDependents

          java.util.Set<java.lang.String> getDependents​(java.lang.String className)

      Returns the fully qualified names of the direct dependencies of a given component.

    - #### getDependencies

          java.util.Set<java.lang.String> getDependencies​(java.lang.String className,
                                                          ComponentDependencyRegistry.DependencyType type)

      Returns the fully qualified names of the direct dependencies of a given component and a given dependency type.
      See Also:
        `ComponentDependencyRegistry.DependencyType`

    - #### listen

          void listen​(InvalidationEventHub invalidationEventHub)

      Signs up this registry to invalidation events from a given hub.

    - #### writeFile

          void writeFile()

      Writes the current component dependency data to a file so it can be reused in a new run later.
      See Also:
        `FILENAME`

    - #### contains

          boolean contains​(java.lang.String className)

      Tells whether this registry already contans a given class name.

    - #### getClassNames

          java.util.Set<java.lang.String> getClassNames()

      Returns the set of all class names in the registry.

    - #### getRootClasses

          java.util.Set<java.lang.String> getRootClasses()

      Returns the set of all root classes (i.e. ones with no dependencies).

    - #### isStoredDependencyInformationPresent

          boolean isStoredDependencyInformationPresent()

      Returns whether stored dependency information is present.

    - #### disableInvalidations

          void disableInvalidations()

      Tells this service to ignore invalidations in this thread.

    - #### enableInvalidations

          void enableInvalidations()

      Tells this service to stop ignoring invalidations in this thread.