com.google.inject.spi

public Interface Element

Known Direct Subinterfaces: com.google.inject.spi.PrivateElements, com.google.inject.Binding
Known Direct Implementers: com.google.inject.spi.InjectionRequest, com.google.inject.spi.InterceptorBinding, com.google.inject.spi.MembersInjectorLookup, com.google.inject.spi.Message, com.google.inject.spi.ModuleAnnotatedMethodScannerBinding, com.google.inject.spi.ProviderLookup, com.google.inject.spi.ProvisionListenerBinding, com.google.inject.spi.RequireAtInjectOnConstructorsOption, com.google.inject.spi.RequireExactBindingAnnotationsOption, com.google.inject.spi.RequireExplicitBindingsOption, com.google.inject.spi.ScopeBinding, com.google.inject.spi.StaticInjectionRequest, com.google.inject.spi.TypeConverterBinding, com.google.inject.spi.TypeListenerBinding, com.google.inject.spi.DisableCircularProxiesOption
Imports: com.google.inject.Binder

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.

Authors: [email protected] (Jesse Wilson), [email protected] (Bob Lee)
Since: 2.0

Method Summary

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

Method Detail

acceptVisitor	back to summary
public <T> T acceptVisitor(ElementVisitor<T> visitor) Accepts an element visitor. Invokes the visitor method specific to this element's type. Parameters visitor:ElementVisitor<T> to call back on

acceptVisitor

back to summary

public <T> T acceptVisitor(ElementVisitor<T> visitor)

Accepts an element visitor. Invokes the visitor method specific to this element's type.

Parameters

visitor:ElementVisitor<T>: to call back on

applyTo back to summary

applyTo	back to summary
public void applyTo(Binder binder) Writes this module element to the given binder (optional operation). Parameters binder:Binder to apply configuration element to Exceptions UnsupportedOperationException: if the `applyTo` method is not supported by this element.

public void applyTo(Binder binder)

Writes this module element to the given binder (optional operation).

Parameters

binder:Binder: to apply configuration element to

Exceptions

UnsupportedOperationException:: if the applyTo method is not supported by this element.

getSource back to summary

getSource	back to summary
public Object getSource() 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.

public Object getSource()

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.