org.apache.ignite.internal.processors.query.h2.twostep

Class GridMergeIndex

java.lang.Object

BaseIndex

org.apache.ignite.internal.processors.query.h2.twostep.GridMergeIndex

Direct Known Subclasses:

GridMergeIndexSorted, GridMergeIndexUnsorted

public abstract class GridMergeIndex
extends BaseIndex

Merge index.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	GridMergeIndex.FetchingCursor Fetching cursor.
protected static interface	GridMergeIndex.Pollable<E> Pollable.

Field Summary

Fields

Modifier and Type	Field and Description
protected Comparator<SearchRow>	firstRowCmp
protected Comparator<SearchRow>	lastRowCmp

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GridMergeIndex(GridKernalContext ctx)
	GridMergeIndex(GridKernalContext ctx, GridMergeTable tbl, String name, IndexType type, IndexColumn[] cols)

Method Summary

Modifier and Type	Method and Description
void	add(Session ses, Row row)
void	addPage(GridResultPage page)
protected abstract void	addPage0(GridResultPage page)
protected static int	binarySearchRow(List<Row> rows, SearchRow searchRow, Comparator<SearchRow> cmp, boolean checkLast)
boolean	canGetFirstOrLast()
protected void	checkBounds(Row lastEvictedRow, SearchRow first, SearchRow last)
void	checkRename()
void	close(Session ses)
protected GridResultPage	createDummyLastPage(GridResultPage lastPage)
void	fail(CacheException e)
void	fail(UUID nodeId, CacheException e)
abstract boolean	fetchedAll()
Cursor	find(Session ses, SearchRow first, SearchRow last)
protected abstract Cursor	findAllFetched(List<Row> fetched, SearchRow first, SearchRow last)
Cursor	findFirstOrLast(Session ses, boolean first)
protected abstract Cursor	findInStream(SearchRow first, SearchRow last)
long	getDiskSpaceUsed()
long	getRowCount(Session ses)
long	getRowCountApproximation()
boolean	hasSource(UUID nodeId)
boolean	needRebuild()
protected Iterator<Value[]>	pollNextIterator(GridMergeIndex.Pollable<GridResultPage> queue, Iterator<Value[]> iter)
void	remove(Session ses)
void	remove(Session ses, Row row)
void	setPageSize(int pageSize)
void	setSources(Collection<ClusterNode> nodes, int segmentsCnt) Set source nodes.
Set<UUID>	sources()
void	truncate(Session ses)

Methods inherited from class java.lang.Object

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

Field Detail

firstRowCmp

protected final Comparator<SearchRow> firstRowCmp

lastRowCmp

protected final Comparator<SearchRow> lastRowCmp

Constructor Detail

GridMergeIndex

public GridMergeIndex(GridKernalContext ctx,
                      GridMergeTable tbl,
                      String name,
                      IndexType type,
                      IndexColumn[] cols)

Parameters:

ctx - Context.

tbl - Table.

name - Index name.

type - Type.

cols - Columns.

GridMergeIndex

protected GridMergeIndex(GridKernalContext ctx)

Parameters:

ctx - Context.

Method Detail

sources

public Set<UUID> sources()

Returns:

Return source nodes for this merge index.

hasSource

public boolean hasSource(UUID nodeId)

Parameters:

nodeId - Node ID.

Returns:

true If this index needs data from the given source node.

getRowCount

public long getRowCount(Session ses)

getRowCountApproximation

public long getRowCountApproximation()

setSources

public void setSources(Collection<ClusterNode> nodes,
                       int segmentsCnt)

Set source nodes.

Parameters:

nodes - Nodes.

segmentsCnt - Index segments per table.

setPageSize

public void setPageSize(int pageSize)

Parameters:

pageSize - Page size.

pollNextIterator

protected final Iterator<Value[]> pollNextIterator(GridMergeIndex.Pollable<GridResultPage> queue,
                                                   Iterator<Value[]> iter)

Parameters:

queue - Queue to poll.

iter - Current iterator.

Returns:

The same or new iterator.

fail

public void fail(CacheException e)

Parameters:

e - Error.

fail

public void fail(UUID nodeId,
                 CacheException e)

Parameters:

nodeId - Node ID.

e - Exception.

addPage

public final void addPage(GridResultPage page)

Parameters:

page - Page.

createDummyLastPage

protected final GridResultPage createDummyLastPage(GridResultPage lastPage)

Parameters:

lastPage - Real last page.

Returns:

Created dummy page.

addPage0

protected abstract void addPage0(GridResultPage page)

Parameters:

page - Page.

find

public final Cursor find(Session ses,
                         SearchRow first,
                         SearchRow last)

fetchedAll

public abstract boolean fetchedAll()

Returns:

true If we have fetched all the remote rows into a fetched list.

checkBounds

protected void checkBounds(Row lastEvictedRow,
                           SearchRow first,
                           SearchRow last)

Parameters:

lastEvictedRow - Last evicted fetched row.

first - Lower bound.

last - Upper bound.

findInStream

protected abstract Cursor findInStream(SearchRow first,
                                       SearchRow last)

Parameters:

first - Lower bound.

last - Upper bound.

Returns:

Cursor. Usually it must be GridMergeIndex.FetchingCursor instance.

findAllFetched

protected abstract Cursor findAllFetched(List<Row> fetched,
                                         SearchRow first,
                                         SearchRow last)

Parameters:

fetched - Fetched rows.

first - Lower bound.

last - Upper bound.

Returns:

Cursor.

checkRename

public void checkRename()

close

public void close(Session ses)

add

public void add(Session ses,
                Row row)

remove

public void remove(Session ses,
                   Row row)

remove

public void remove(Session ses)

truncate

public void truncate(Session ses)

canGetFirstOrLast

public boolean canGetFirstOrLast()

findFirstOrLast

public Cursor findFirstOrLast(Session ses,
                              boolean first)

needRebuild

public boolean needRebuild()

getDiskSpaceUsed

public long getDiskSpaceUsed()

binarySearchRow

protected static int binarySearchRow(List<Row> rows,
                                     SearchRow searchRow,
                                     Comparator<SearchRow> cmp,
                                     boolean checkLast)

Parameters:

rows - Sorted rows list.

searchRow - Search row.

cmp - Comparator.

checkLast - If we need to optimistically check the last row right away.

Returns:

Insertion point for the search row.