Element

com.google.inject.spi

Interface Element

All Known Subinterfaces:

Binding<T>, ConstructorBinding<T>, ConvertedConstantBinding<T>, ExposedBinding<T>, InstanceBinding<T>, LinkedKeyBinding<T>, PrivateElements, ProviderBinding<T>, ProviderInstanceBinding<T>, ProviderKeyBinding<T>, UntargettedBinding<T>

All Known Implementing Classes:

BindingImpl, DisableCircularProxiesOption, ExposedBindingImpl, InjectionRequest, InterceptorBinding, LinkedBindingImpl, MembersInjectorLookup, Message, ModuleAnnotatedMethodScannerBinding, PrivateElementsImpl, ProviderLookup, ProvisionListenerBinding, RequireAtInjectOnConstructorsOption, RequireExactBindingAnnotationsOption, RequireExplicitBindingsOption, ScopeBinding, StaticInjectionRequest, TypeConverterBinding, TypeListenerBinding
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public interface Element
```
A core component of a module or injector.
The elements of a module can be inspected, validated and rewritten. Use Elements.getElements() to read the elements from a module, and Elements.getModule() to rewrite them. This can be used for static analysis and generation of Guice modules.

The elements of an injector can be inspected and exercised. Use Injector.getBindings() to reflect on Guice injectors.

Since:

2.0

Method Summary

All Methods

Instance Methods

Abstract Methods
Modifier and Type	Method and Description
`<T> T`	`acceptVisitor(ElementVisitor<T> visitor)` Accepts an element visitor.
`void`	`applyTo(Binder binder)` Writes this module element to the given binder (optional operation).
`Object`	`getSource()` Returns an arbitrary object containing information about the "place" where this element was configured.

- Method Detail
  - getSource
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Object getSource()
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    Returns an arbitrary object containing information about the "place" where this element was configured. Used by Guice in the production of descriptive error messages.
    Tools might specially handle types they know about; StackTraceElement is a good example. Tools should simply call toString() on the source object if the type is unfamiliar.
  - acceptVisitor
```
<T> T acceptVisitor(ElementVisitor<T> visitor)
```
    Accepts an element visitor. Invokes the visitor method specific to this element's type.
    
    Parameters:
    
    visitor - to call back on
  - applyTo
```
void applyTo(Binder binder)
```
    Writes this module element to the given binder (optional operation).
    
    Parameters:
    
    binder - to apply configuration element to
    
    Throws:
    
    UnsupportedOperationException - if the applyTo method is not supported by this element.