Package org.elasticsearch.action
Class NotifyOnceListener<Response>
java.lang.Object
org.elasticsearch.action.NotifyOnceListener<Response>
- All Implemented Interfaces:
ActionListener<Response>
- Direct Known Subclasses:
StepListener
public abstract class NotifyOnceListener<Response> extends java.lang.Object implements ActionListener<Response>
A listener that ensures that only one of onResponse or onFailure is called. And the method
the is called is only called once. Subclasses should implement notification logic with
innerOnResponse and innerOnFailure.
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Nested Class Summary
Nested classes/interfaces inherited from interface org.elasticsearch.action.ActionListener
ActionListener.Delegating<Response,DelegateResponse>, ActionListener.DelegatingActionListener<T>, ActionListener.DelegatingFailureActionListener<T,R>, ActionListener.MappedActionListener<Response,MappedResponse>, ActionListener.RunAfterActionListener<T>, ActionListener.RunBeforeActionListener<T>
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Constructor Summary
Constructors Constructor Description NotifyOnceListener()
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Method Summary
Modifier and Type Method Description protected abstract void
innerOnFailure(java.lang.Exception e)
protected abstract void
innerOnResponse(Response response)
void
onFailure(java.lang.Exception e)
A failure caused by an exception at some phase of the task.void
onResponse(Response response)
Handle action response.Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.elasticsearch.action.ActionListener
delegateFailure, delegateResponse, map
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Constructor Details
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NotifyOnceListener
public NotifyOnceListener()
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Method Details
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innerOnResponse
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innerOnFailure
protected abstract void innerOnFailure(java.lang.Exception e) -
onResponse
Description copied from interface:ActionListener
Handle action response. This response may constitute a failure or a success but it is up to the listener to make that decision.- Specified by:
onResponse
in interfaceActionListener<Response>
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onFailure
public final void onFailure(java.lang.Exception e)Description copied from interface:ActionListener
A failure caused by an exception at some phase of the task.- Specified by:
onFailure
in interfaceActionListener<Response>
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