Package org.elasticsearch.action.support
Class GroupedActionListener<T>
- java.lang.Object
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- org.elasticsearch.action.support.GroupedActionListener<T>
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- All Implemented Interfaces:
ActionListener<T>
public final class GroupedActionListener<T> extends java.lang.Object implements ActionListener<T>
An action listener that delegates its results to another listener once it has received N results (either successes or failures). This allows synchronous tasks to be forked off in a loop with the same listener and respond to a higher level listener once all tasks responded.
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Constructor Summary
Constructors Constructor Description GroupedActionListener(ActionListener<java.util.Collection<T>> delegate, int groupSize)
Creates a new listener
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Method Summary
Modifier and Type Method Description void
onFailure(java.lang.Exception e)
A failure caused by an exception at some phase of the task.void
onResponse(T element)
Handle action response.
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Constructor Detail
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GroupedActionListener
public GroupedActionListener(ActionListener<java.util.Collection<T>> delegate, int groupSize)
Creates a new listener- Parameters:
delegate
- the delegate listenergroupSize
- the group size
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Method Detail
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onResponse
public void onResponse(T element)
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<T>
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onFailure
public 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<T>
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