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public interface Parameter
This class provides control over the arguments that will be passed to a constructor. It can be used for finer control over what arguments are passed to a particular constructor.
a method on the
{@link MutablePicoContainer} interface which allows passing in of an array of {@linkplain Parameter Parameters}.
,
an implementation of this interface that allows you to specify the key
used for resolving the parameter.
,
an implementation of this interface that allows you to specify a constant
that will be used for resolving the parameter.
Method Summary | |
---|---|
void |
accept(PicoVisitor visitor)
Accepts a visitor for this Parameter. |
boolean |
isResolvable(PicoContainer container,
ComponentAdapter adapter,
java.lang.Class expectedType)
Check if the Parameter can statisfy the expected type using the container. |
java.lang.Object |
resolveInstance(PicoContainer container,
ComponentAdapter adapter,
java.lang.Class expectedType)
Retrieve the object from the Parameter that statisfies the expected type. |
void |
verify(PicoContainer container,
ComponentAdapter adapter,
java.lang.Class expectedType)
Verify that the Parameter can statisfied the expected type using the container |
Method Detail |
---|
java.lang.Object resolveInstance(PicoContainer container, ComponentAdapter adapter, java.lang.Class expectedType)
container
- the container from which dependencies are resolved.adapter
- the ComponentAdapter
that is asking for the instanceexpectedType
- the type that the returned instance needs to match.
null
if no suitable instance can be found.
PicoInitializationException
- if a referenced component could not be instantiated.boolean isResolvable(PicoContainer container, ComponentAdapter adapter, java.lang.Class expectedType)
container
- the container from which dependencies are resolved.adapter
- the ComponentAdapter
that is asking for the instanceexpectedType
- the required type
true
if the component parameter can be resolved.void verify(PicoContainer container, ComponentAdapter adapter, java.lang.Class expectedType)
container
- the container from which dependencies are resolved.adapter
- the ComponentAdapter
that is asking for the verificationexpectedType
- the required type
PicoIntrospectionException
- if parameter and its dependencies cannot be resolvedvoid accept(PicoVisitor visitor)
ComponentAdapter
, that
cascades the visitor also down to all its Parameters.
visitor
- the visitor.
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