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java.lang.Objectorg.picocontainer.defaults.ConstantParameter
public class ConstantParameter
A ConstantParameter should be used to pass in "constant" arguments to constructors. This
includes String
s,Integer
s or any other object that is not registered in
the container.
Field Summary | |
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private java.lang.Object |
value
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Constructor Summary | |
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ConstantParameter(java.lang.Object value)
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Method Summary | |
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void |
accept(PicoVisitor visitor)
Visit the current Parameter . |
private boolean |
checkPrimitive(java.lang.Class expectedType)
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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 |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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private final java.lang.Object value
Constructor Detail |
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public ConstantParameter(java.lang.Object value)
Method Detail |
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public java.lang.Object resolveInstance(PicoContainer container, ComponentAdapter adapter, java.lang.Class expectedType)
Parameter
resolveInstance
in interface Parameter
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.public boolean isResolvable(PicoContainer container, ComponentAdapter adapter, java.lang.Class expectedType)
Parameter
isResolvable
in interface Parameter
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.public void verify(PicoContainer container, ComponentAdapter adapter, java.lang.Class expectedType) throws PicoException
verify
in interface Parameter
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 resolved
PicoException
Parameter.verify(org.picocontainer.PicoContainer,
org.picocontainer.ComponentAdapter, java.lang.Class)
public void accept(PicoVisitor visitor)
Parameter
.
accept
in interface Parameter
visitor
- the visitor.Parameter.accept(org.picocontainer.PicoVisitor)
private boolean checkPrimitive(java.lang.Class expectedType)
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