Package org.apache.druid.client

Class JsonParserIterator<T>

java.lang.Object

org.apache.druid.client.JsonParserIterator<T>

All Implemented Interfaces:

Closeable, AutoCloseable, Iterator<T>, CloseableIterator<T>

public class JsonParserIterator<T>
extends Object
implements CloseableIterator<T>

Constructor Summary

Constructors

Constructor	Description
JsonParserIterator(com.fasterxml.jackson.databind.JavaType typeRef, Future<InputStream> future, com.fasterxml.jackson.databind.ObjectMapper objectMapper)	Bypasses Jackson serialization to prevent materialization of results from the future in memory at once.
JsonParserIterator(com.fasterxml.jackson.databind.JavaType typeRef, Future<InputStream> future, String url, Query<T> query, String host, com.fasterxml.jackson.databind.ObjectMapper objectMapper)

Method Summary

Modifier and Type	Method	Description
void	close()
boolean	hasNext()
T	next()
void	remove()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.java.util.common.parsers.CloseableIterator

flatMap, map

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Details

JsonParserIterator

public JsonParserIterator(com.fasterxml.jackson.databind.JavaType typeRef,
 Future<InputStream> future,
 String url,
 @Nullable
 Query<T> query,
 String host,
 com.fasterxml.jackson.databind.ObjectMapper objectMapper)

JsonParserIterator

public JsonParserIterator(com.fasterxml.jackson.databind.JavaType typeRef,
 Future<InputStream> future,
 com.fasterxml.jackson.databind.ObjectMapper objectMapper)

Bypasses Jackson serialization to prevent materialization of results from the future in memory at once. A shortened version of JsonParserIterator(JavaType, Future, String, Query, String, ObjectMapper) where the URL and host parameters, used solely for logging/errors, are not known.

Method Details

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T>

next

public T next()

Specified by:

next in interface Iterator<T>

remove

public void remove()

Specified by:

remove in interface Iterator<T>

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException