com.mapr.ojai.store.impl

Class CollectingDocumentListener

java.lang.Object

com.mapr.ojai.store.impl.CollectingDocumentListener

All Implemented Interfaces:

org.ojai.DocumentListener

public class CollectingDocumentListener
extends java.lang.Object
implements org.ojai.DocumentListener

DocumentListener that collects a set of documents and releases a semaphore when the entire result set has been received. The use of a semaphore allows the user to wait until the result set has arrived. In order to catch errors, be sure to override failed(Exception), and then call super.failed() in order to release the semaphore. Because this materializes the whole result set, don't use it for anything other than very small result sets.

Constructor Summary

Constructors

Constructor and Description
CollectingDocumentListener(java.util.List<org.ojai.Document> docList, java.util.concurrent.Semaphore doneSem) Constructor.

Method Summary

Modifier and Type	Method and Description
boolean	documentArrived(org.ojai.Document doc)
void	eos()
void	failed(java.lang.Exception ex)
java.lang.Exception	getException()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CollectingDocumentListener

public CollectingDocumentListener(java.util.List<org.ojai.Document> docList,
                                  java.util.concurrent.Semaphore doneSem)

Constructor.

Parameters:

docList - the list to add documents to

doneSem - the semaphore to release when the result set is complete or when an error occurs

Method Detail

getException

public java.lang.Exception getException()

documentArrived

public boolean documentArrived(org.ojai.Document doc)

Specified by:

documentArrived in interface org.ojai.DocumentListener

eos

public void eos()

Specified by:

eos in interface org.ojai.DocumentListener

failed

public void failed(java.lang.Exception ex)

Specified by:

failed in interface org.ojai.DocumentListener