Package org.apache.cassandra.analytics.reader.common

Class IndexIterator<ReaderType extends org.apache.cassandra.spark.reader.common.IIndexReader>

java.lang.Object

org.apache.cassandra.analytics.reader.common.IndexIterator<ReaderType>

Type Parameters:

ReaderType -

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.util.function.Consumer<org.apache.cassandra.spark.reader.IndexEntry>, org.apache.cassandra.spark.reader.IndexConsumer, org.apache.cassandra.spark.reader.StreamScanner<org.apache.cassandra.spark.reader.IndexEntry>

public class IndexIterator<ReaderType extends org.apache.cassandra.spark.reader.common.IIndexReader>
extends java.lang.Object
implements org.apache.cassandra.spark.reader.StreamScanner<org.apache.cassandra.spark.reader.IndexEntry>, org.apache.cassandra.spark.reader.IndexConsumer

Iterator for reading through IndexEntries for multiple Index.db files.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	IndexIterator.IndexReaderOpener<ReaderType extends org.apache.cassandra.spark.reader.common.IIndexReader>

Constructor Summary

Constructors

Constructor	Description
IndexIterator(org.apache.cassandra.spark.data.SSTablesSupplier ssTables, org.apache.cassandra.analytics.stats.Stats stats, IndexIterator.IndexReaderOpener<ReaderType> supplier)

Method Summary

Modifier and Type	Method	Description
void	accept(org.apache.cassandra.spark.reader.IndexEntry wrapper)
void	advanceToNextColumn()
void	close()
org.apache.cassandra.spark.reader.IndexEntry	data()
boolean	hasMoreColumns()
protected boolean	hasPendingItems()
protected boolean	isRunning()
protected boolean	maybeFail()
boolean	next()
protected boolean	noFailures()
void	onFailure(java.lang.Throwable t)
void	onFinished(long runtimeNanos)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Consumer

andThen

Constructor Detail

IndexIterator

public IndexIterator(@NotNull
                     org.apache.cassandra.spark.data.SSTablesSupplier ssTables,
                     @NotNull
                     org.apache.cassandra.analytics.stats.Stats stats,
                     @NotNull
                     IndexIterator.IndexReaderOpener<ReaderType> supplier)

Method Detail

accept

public void accept(org.apache.cassandra.spark.reader.IndexEntry wrapper)

Specified by:

accept in interface java.util.function.Consumer<ReaderType extends org.apache.cassandra.spark.reader.common.IIndexReader>

data

public org.apache.cassandra.spark.reader.IndexEntry data()

Specified by:

data in interface org.apache.cassandra.spark.reader.StreamScanner<ReaderType extends org.apache.cassandra.spark.reader.common.IIndexReader>

next

public boolean next()
             throws java.io.IOException

Specified by:

next in interface org.apache.cassandra.spark.reader.StreamScanner<ReaderType extends org.apache.cassandra.spark.reader.common.IIndexReader>

Throws:

java.io.IOException

isRunning

protected boolean isRunning()

hasPendingItems

protected boolean hasPendingItems()

noFailures

protected boolean noFailures()

maybeFail

protected boolean maybeFail()

hasMoreColumns

public boolean hasMoreColumns()

Specified by:

hasMoreColumns in interface org.apache.cassandra.spark.reader.StreamScanner<ReaderType extends org.apache.cassandra.spark.reader.common.IIndexReader>

advanceToNextColumn

public void advanceToNextColumn()

Specified by:

advanceToNextColumn in interface org.apache.cassandra.spark.reader.StreamScanner<ReaderType extends org.apache.cassandra.spark.reader.common.IIndexReader>

close

public void close()

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

onFailure

public void onFailure(java.lang.Throwable t)

Specified by:

onFailure in interface org.apache.cassandra.spark.reader.IndexConsumer

onFinished

public void onFinished(long runtimeNanos)

Specified by:

onFinished in interface org.apache.cassandra.spark.reader.IndexConsumer