Package org.apache.cassandra.index.sai.disk

Class SSTableRowIdKeyRangeIterator

java.lang.Object

org.apache.cassandra.utils.AbstractGuavaIterator<PrimaryKey>

org.apache.cassandra.index.sai.iterators.KeyRangeIterator

org.apache.cassandra.index.sai.disk.SSTableRowIdKeyRangeIterator

All Implemented Interfaces:

com.google.common.collect.PeekingIterator<PrimaryKey>, java.io.Closeable, java.lang.AutoCloseable, java.util.Iterator<PrimaryKey>

@NotThreadSafe
public class SSTableRowIdKeyRangeIterator
extends KeyRangeIterator

From sstable row id range iterator to primary key range iterator

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.cassandra.index.sai.iterators.KeyRangeIterator

KeyRangeIterator.Builder

Nested classes/interfaces inherited from class org.apache.cassandra.utils.AbstractGuavaIterator

AbstractGuavaIterator.State

Field Summary

Fields inherited from class org.apache.cassandra.utils.AbstractGuavaIterator

next

Method Summary

Modifier and Type	Method	Description
void	close()
protected PrimaryKey	computeNext()	Returns the next element.
static KeyRangeIterator	create(PrimaryKeyMap primaryKeyMap, QueryContext queryContext, PostingList postingList)
protected void	performSkipTo(PrimaryKey nextKey)	Skip to nextKey.

Methods inherited from class org.apache.cassandra.index.sai.iterators.KeyRangeIterator

empty, getCount, getCurrent, getMaximum, getMinimum, nullSafeMax, nullSafeMin, skipTo, tryToComputeNext

Methods inherited from class org.apache.cassandra.utils.AbstractGuavaIterator

endOfData, hasNext, next, peek, remove

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Method Detail

create

public static KeyRangeIterator create(PrimaryKeyMap primaryKeyMap,
                                      QueryContext queryContext,
                                      PostingList postingList)

performSkipTo

protected void performSkipTo(PrimaryKey nextKey)

Description copied from class: KeyRangeIterator

Skip to nextKey. That is, implementations should set up the iterator state such that calling computeNext() will return nextKey if present, or the first one after it if not present.

Specified by:

performSkipTo in class KeyRangeIterator

computeNext

protected PrimaryKey computeNext()

Description copied from class: AbstractGuavaIterator

Returns the next element. Note: the implementation must call AbstractGuavaIterator.endOfData() when there are no elements left in the iteration. Failure to do so could result in an infinite loop.

The initial invocation of AbstractGuavaIterator.hasNext() or AbstractGuavaIterator.next() calls this method, as does the first invocation of hasNext or next following each successful call to next. Once the implementation either invokes endOfData or throws an exception, computeNext is guaranteed to never be called again.

If this method throws an exception, it will propagate outward to the hasNext or next invocation that invoked this method. Any further attempts to use the iterator will result in an IllegalStateException.

The implementation of this method may not invoke the hasNext, next, or AbstractGuavaIterator.peek() methods on this instance; if it does, an IllegalStateException will result.

Specified by:

computeNext in class AbstractGuavaIterator<PrimaryKey>

Returns:

the next element if there was one. If endOfData was called during execution, the return value will be ignored.

close

public void close()