org.apache.cassandra.db.transform

Class BaseRows<R extends Unfiltered,I extends BaseRowIterator<? extends Unfiltered>>

java.lang.Object

org.apache.cassandra.db.transform.BaseRows<R,I>

All Implemented Interfaces:

java.lang.AutoCloseable, java.util.Iterator<R>, BaseRowIterator<R>, CloseableIterator<R>

Direct Known Subclasses:

FilteredRows

public abstract class BaseRows<R extends Unfiltered,I extends BaseRowIterator<? extends Unfiltered>>
extends java.lang.Object
implements BaseRowIterator<R>

Constructor Summary

Constructors

Constructor and Description
BaseRows(I input)

Method Summary

Modifier and Type	Method and Description
protected Unfiltered	applyOne(Unfiltered value, Transformation transformation) apply the relevant method from the transformation to the value.
void	close()
PartitionColumns	columns() A subset of the columns for the (static and regular) rows returned by this iterator.
protected boolean	hasMoreContents()
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.
O	next()
DecoratedKey	partitionKey() The partition key of the partition this in an iterator over.
protected java.lang.Throwable	runOnClose(int length) run the corresponding runOnClose method for the first length transformations.
Row	staticRow() The static part corresponding to this partition (this can be an empty row but cannot be null).

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.BaseRowIterator

isEmpty

Methods inherited from interface org.apache.cassandra.utils.CloseableIterator

close

Methods inherited from interface java.util.Iterator

forEachRemaining, next, remove

Constructor Detail

BaseRows

public BaseRows(I input)

Method Detail

metadata

public CFMetaData metadata()

Description copied from interface: BaseRowIterator

The metadata for the table this iterator on.

Specified by:

metadata in interface BaseRowIterator<R extends Unfiltered>

isReverseOrder

public boolean isReverseOrder()

Description copied from interface: BaseRowIterator

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

Specified by:

isReverseOrder in interface BaseRowIterator<R extends Unfiltered>

columns

public PartitionColumns columns()

Description copied from interface: BaseRowIterator

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 BaseRowIterator<R extends Unfiltered>

partitionKey

public DecoratedKey partitionKey()

Description copied from interface: BaseRowIterator

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

Specified by:

partitionKey in interface BaseRowIterator<R extends Unfiltered>

staticRow

public Row staticRow()

Description copied from interface: BaseRowIterator

The static part corresponding to this partition (this can be an empty row but cannot be null).

Specified by:

staticRow in interface BaseRowIterator<R extends Unfiltered>

runOnClose

protected java.lang.Throwable runOnClose(int length)

run the corresponding runOnClose method for the first length transformations. used in hasMoreContents to close the methods preceding the MoreContents

applyOne

protected Unfiltered applyOne(Unfiltered value,
                              Transformation transformation)

apply the relevant method from the transformation to the value. used in hasMoreContents to apply the functions that follow the MoreContents

hasNext

public final boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<R extends Unfiltered>

close

public final void close()

Specified by:

close in interface java.lang.AutoCloseable

next

public final O next()

Specified by:

next in interface java.util.Iterator<O extends V>

hasMoreContents

protected final boolean hasMoreContents()