## Uses of Interface
org.apache.tapestry5.NullFieldStrategy

- Packages that use NullFieldStrategy
  Package | Description
  --- | ---
  org.apache.tapestry5 | Root package for Tapestry, containing common interfaces and data types used throughout the framework.
  org.apache.tapestry5.internal | [INTERNAL USE ONLY] internal support classes; API subject to change.
  org.apache.tapestry5.internal.services | [INTERNAL USE ONLY] internal service classes; API subject to change
  org.apache.tapestry5.modules |
  org.apache.tapestry5.services | Core services
  org.apache.tapestry5.test | Support for testing Tapestry pages

- - ### Uses of NullFieldStrategy in org.apache.tapestry5

    Methods in org.apache.tapestry5 with parameters of type NullFieldStrategy
    Modifier and Type | Method | Description
    --- | --- | ---
    `Object` | FieldValidationSupport.`parseClient​(String clientValue, ComponentResources componentResources, FieldTranslator<Object> translator, NullFieldStrategy nullFieldStrategy)` | A wrapper around `Translator.parseClient(Field, String, String)`.
    `String` | FieldValidationSupport.`toClient​(Object value, ComponentResources componentResources, FieldTranslator<Object> translator, NullFieldStrategy nullFieldStrategy)` | A wrapper around `Translator.toClient(Object)` that first fires a "toclient" event on the component to see if it can perform the conversion.

  - ### Uses of NullFieldStrategy in org.apache.tapestry5.internal

    Classes in org.apache.tapestry5.internal that implement NullFieldStrategy
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `DefaultNullFieldStrategy` | Default strategy, which is to do nothing: null values stay null.
    `class` | `ZeroNullFieldStrategy` | Treats nulls to or from the client as if they were 0's.

  - ### Uses of NullFieldStrategy in org.apache.tapestry5.internal.services

    Methods in org.apache.tapestry5.internal.services that return NullFieldStrategy
    Modifier and Type | Method | Description
    --- | --- | ---
    `NullFieldStrategy` | NullFieldStrategySourceImpl.`get​(String name)` |

    Methods in org.apache.tapestry5.internal.services with parameters of type NullFieldStrategy
    Modifier and Type | Method | Description
    --- | --- | ---
    `Object` | FieldValidationSupportImpl.`parseClient​(String clientValue, ComponentResources componentResources, FieldTranslator<Object> translator, NullFieldStrategy nullFieldStrategy)` |
    `String` | FieldValidationSupportImpl.`toClient​(Object value, ComponentResources componentResources, FieldTranslator<Object> translator, NullFieldStrategy nullFieldStrategy)` |

    Constructor parameters in org.apache.tapestry5.internal.services with type arguments of type NullFieldStrategy
    Constructor | Description
    --- | ---
    `NullFieldStrategySourceImpl​(Map<String,​NullFieldStrategy> configuration)` |

  - ### Uses of NullFieldStrategy in org.apache.tapestry5.modules

    Method parameters in org.apache.tapestry5.modules with type arguments of type NullFieldStrategy
    Modifier and Type | Method | Description
    --- | --- | ---
    `static void` | TapestryModule.`contributeNullFieldStrategySource​(MappedConfiguration<String,​NullFieldStrategy> configuration)` | Contributes strategies accessible via the `NullFieldStrategySource` service.

  - ### Uses of NullFieldStrategy in org.apache.tapestry5.services

    Methods in org.apache.tapestry5.services that return NullFieldStrategy
    Modifier and Type | Method | Description
    --- | --- | ---
    `NullFieldStrategy` | NullFieldStrategySource.`get​(String name)` | Returns the instance based on the name.

  - ### Uses of NullFieldStrategy in org.apache.tapestry5.test

    Methods in org.apache.tapestry5.test that return NullFieldStrategy
    Modifier and Type | Method | Description
    --- | --- | ---
    `protected NullFieldStrategy` | TapestryTestCase.`mockNullFieldStrategy()` |