BindingConstants (Tapestry API

java.lang.Object
- org.apache.tapestry5.BindingConstants

```
public class BindingConstants
extends Object
```
Constants for the built-in binding prefixes. These are often used with the Parameter.defaultPrefix() annotation attribute.

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`ASSET` References a localized asset.
`static String`	`BLOCK` References a named block within the template.
`static String`	`COMPONENT` A reference to a component within the container's template, by local component id.
`static String`	`CONTEXT` Binding factory for context assets specifically.
`static String`	`LITERAL` Binding expression prefix used for literal strings.
`static String`	`MESSAGE` A reference to a localized message from the component's message catalog (including message keys inherited from the application global message catalog).
`static String`	`NULLFIELDSTRATEGY` A way of selecting a named `NullFieldStrategy` contributed to `NullFieldStrategySource`.
`static String`	`PROP` Binding expression prefix used to bind to a property of the component.
`static String`	`SYMBOL` References a value of a symbol.
`static String`	`TRANSLATE` References a named `Translator` contributed to the `TranslatorSource` service.
`static String`	`VALIDATE` References (and configures) one ore more named `Validator`s contributed to the `FieldValidatorSource` service.
`static String`	`VAR` Allows for temporary storage of information during the render only (may not currently be used during form submission processing).

Constructor Summary

Constructors
Constructor and Description

BindingConstants()

Constructors
Constructor and Description
`BindingConstants()`

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - LITERAL
```
public static final String LITERAL
```
    Binding expression prefix used for literal strings.
    
    See Also:
    Constant Field Values
  - PROP
```
public static final String PROP
```
    Binding expression prefix used to bind to a property of the component. When Parameter.defaultPrefix() is not specified, the default is PROP.
    
    See Also:
    Constant Field Values
  - NULLFIELDSTRATEGY
```
public static final String NULLFIELDSTRATEGY
```
    A way of selecting a named NullFieldStrategy contributed to NullFieldStrategySource.
    
    See Also:
    Constant Field Values
  - COMPONENT
```
public static final String COMPONENT
```
    A reference to a component within the container's template, by local component id.
    
    See Also:
    Constant Field Values
  - MESSAGE
```
public static final String MESSAGE
```
    A reference to a localized message from the component's message catalog (including message keys inherited from the application global message catalog).
    
    See Also:
    Constant Field Values
  - VALIDATE
```
public static final String VALIDATE
```
    References (and configures) one ore more named Validators contributed to the FieldValidatorSource service.
    
    See Also:
    FieldValidatorSource, Constant Field Values
  - TRANSLATE
```
public static final String TRANSLATE
```
    References a named Translator contributed to the TranslatorSource service. The binding is of type FieldTranslator.
    
    See Also:
    Constant Field Values
  - BLOCK
```
public static final String BLOCK
```
    References a named block within the template.
    
    See Also:
    Constant Field Values
  - ASSET
```
public static final String ASSET
```
    References a localized asset. The asset will be relative to the component's class file, unless a prefix (typically, "context:") is used on the expression. Typically, this is used for classpath assets relative to the component class, and CONTEXT is used for context assets.
    
    See Also:
    Asset, AssetSource, Constant Field Values
  - VAR
```
public static final String VAR
```
    Allows for temporary storage of information during the render only (may not currently be used during form submission processing). This is often used to store the current object iterated over by a Loop component.
    
    See Also:
    Constant Field Values
  - CONTEXT
```
public static final String CONTEXT
```
    Binding factory for context assets specifically. The expression is the path from the root of the web application.
    
    Since:
    
    5.1.0.0
    
    See Also:
    Constant Field Values
  - SYMBOL
```
public static final String SYMBOL
```
    References a value of a symbol.
    
    Since:
    
    5.2.0
    
    See Also:
    Constant Field Values
- Constructor Detail
  - BindingConstants
```
public BindingConstants()
```

Class BindingConstants

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

LITERAL

PROP

NULLFIELDSTRATEGY

COMPONENT

MESSAGE

VALIDATE

TRANSLATE

BLOCK

ASSET

VAR

CONTEXT

SYMBOL

Constructor Detail

BindingConstants