org.apache.cassandra.db.rows

Class WrappingRowIterator

java.lang.Object

com.google.common.collect.UnmodifiableIterator<Row>

org.apache.cassandra.db.rows.WrappingRowIterator

All Implemented Interfaces:

java.lang.AutoCloseable, java.util.Iterator<Row>, RowIterator

Direct Known Subclasses:

CountingRowIterator

public abstract class WrappingRowIterator
extends com.google.common.collect.UnmodifiableIterator<Row>
implements RowIterator

Abstract class to make writing atom iterators that wrap another iterator easier. By default, the wrapping iterator simply delegate every call to the wrapped iterator so concrete implementations will override some of the methods.

Field Summary

Fields

Modifier and Type	Field and Description
protected RowIterator	wrapped

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	WrappingRowIterator(RowIterator wrapped)

Method Summary

Modifier and Type	Method and Description
void	close()
PartitionColumns	columns() A subset of the columns for the (static and regular) rows returned by this iterator.
boolean	hasNext()
boolean	isReverseOrder() Whether or not the rows returned by this iterator are in reversed clustering order.
CFMetaData	metadata() The metadata for the table this iterator on.
Row	next()
DecoratedKey	partitionKey() The partition key of the partition this in an iterator over.
Row	staticRow() The static part corresponding to this partition (this can be an empty row).

Methods inherited from class com.google.common.collect.UnmodifiableIterator

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.cassandra.db.rows.RowIterator

isEmpty

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Field Detail

wrapped

protected final RowIterator wrapped

Constructor Detail

WrappingRowIterator

protected WrappingRowIterator(RowIterator wrapped)

Method Detail

metadata

public CFMetaData metadata()

Description copied from interface: RowIterator

The metadata for the table this iterator on.

Specified by:

metadata in interface RowIterator

isReverseOrder

public boolean isReverseOrder()

Description copied from interface: RowIterator

Whether or not the rows returned by this iterator are in reversed clustering order.

Specified by:

isReverseOrder in interface RowIterator

columns

public PartitionColumns columns()

Description copied from interface: RowIterator

A subset of the columns for the (static and regular) rows returned by this iterator. Every row returned by this iterator must guarantee that it has only those columns.

Specified by:

columns in interface RowIterator

partitionKey

public DecoratedKey partitionKey()

Description copied from interface: RowIterator

The partition key of the partition this in an iterator over.

Specified by:

partitionKey in interface RowIterator

staticRow

public Row staticRow()

Description copied from interface: RowIterator

The static part corresponding to this partition (this can be an empty row).

Specified by:

staticRow in interface RowIterator

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<Row>

next

public Row next()

Specified by:

next in interface java.util.Iterator<Row>

close

public void close()

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface RowIterator