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| package org.picocontainer.defaults; |
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| import org.picocontainer.ComponentAdapter; |
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| import org.picocontainer.PicoInitializationException; |
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| import org.picocontainer.PicoIntrospectionException; |
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| import org.picocontainer.PicoContainer; |
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| public class CachingComponentAdapter extends DecoratingComponentAdapter { |
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| private ObjectReference instanceReference; |
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1134
| public CachingComponentAdapter(ComponentAdapter delegate) {
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| this(delegate, new SimpleReference());
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| } |
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| public CachingComponentAdapter(ComponentAdapter delegate, ObjectReference instanceReference) {
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| super(delegate);
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| this.instanceReference = instanceReference;
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| } |
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| public Object getComponentInstance(PicoContainer container)
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| throws PicoInitializationException, PicoIntrospectionException, AssignabilityRegistrationException, NotConcreteRegistrationException { |
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| if (instanceReference.get() == null) {
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| instanceReference.set(super.getComponentInstance(container));
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| } |
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| return instanceReference.get();
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| } |
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| } |