com.mapr.ojai.store.impl

Class UnionDocumentStream

java.lang.Object

com.mapr.ojai.store.impl.AbstractDocumentStream

com.mapr.ojai.store.impl.QueryDocumentStream

com.mapr.ojai.store.impl.UnionDocumentStream

All Implemented Interfaces:

com.mapr.db.impl.OjaiQueryProperties, java.lang.AutoCloseable, java.lang.Iterable<org.ojai.Document>, org.ojai.DocumentStream

public class UnionDocumentStream
extends QueryDocumentStream

DocumentStream that will return results, one after the other, from a series of DocumentStreams returned by a DocumentStreamFactory.

Nested Class Summary

Nested classes/interfaces inherited from interface com.mapr.db.impl.OjaiQueryProperties

com.mapr.db.impl.OjaiQueryProperties.QueryPath

Field Summary

Fields inherited from class com.mapr.ojai.store.impl.AbstractDocumentStream

isUsed

Constructor Summary

Constructors

Constructor and Description
UnionDocumentStream(DocumentStreamFactory streamFactory) Constructor.

Method Summary

Modifier and Type	Method and Description
protected void	cancelQuery() Perform whatever steps the derived class requires for canceling.
java.lang.String	getIndexUsed()
void	getQueryPlan(java.util.List<java.util.Map<java.lang.String,java.lang.Object>> planList)
java.util.Iterator<org.ojai.Document>	iterator()

Methods inherited from class com.mapr.ojai.store.impl.QueryDocumentStream

closeDerived, getQueryPath, getQueryPlan, submitQuery

Methods inherited from class com.mapr.ojai.store.impl.AbstractDocumentStream

checkState, close, documentReaders, isCanceled, isClosed, streamTo

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

UnionDocumentStream

public UnionDocumentStream(DocumentStreamFactory streamFactory)

Constructor.

Parameters:

executorService - an executor service this can use for asynchronous operations

streamFactory - the stream factory to use; this should return null when there are no more DocumentStreams to source from

Method Detail

iterator

public java.util.Iterator<org.ojai.Document> iterator()

cancelQuery

protected void cancelQuery()

Description copied from class: AbstractDocumentStream

Perform whatever steps the derived class requires for canceling.

Overrides:

cancelQuery in class AbstractDocumentStream

getIndexUsed

public java.lang.String getIndexUsed()

Specified by:

getIndexUsed in interface com.mapr.db.impl.OjaiQueryProperties

Overrides:

getIndexUsed in class QueryDocumentStream

getQueryPlan

public void getQueryPlan(java.util.List<java.util.Map<java.lang.String,java.lang.Object>> planList)

Specified by:

getQueryPlan in interface com.mapr.db.impl.OjaiQueryProperties

Specified by:

getQueryPlan in class QueryDocumentStream