Package com.illumon.iris.db.v2.utils

Class IndexShiftDataExpander

java.lang.Object

com.illumon.iris.db.v2.utils.IndexShiftDataExpander

All Implemented Interfaces:

SafeCloseable, AutoCloseable

public class IndexShiftDataExpander
extends Object
implements SafeCloseable

Expands ShiftAwareListener.onUpdate(ShiftAwareListener.Update)'s Update into a backward compatible ARM (added, removed, modified) by expanding keyspace shifts. Using this is almost always less efficient than using the Update directly.

Field Summary

Fields

Modifier and Type	Field	Description
static IndexShiftDataExpander	EMPTY	Immutable, re-usable IndexShiftDataExpander for an empty set of changes.

Constructor Summary

Constructors

Constructor	Description
IndexShiftDataExpander(ShiftAwareListener.Update update, Index sourceIndex)	Generates the backwards compatible ARM from an ARMS update.

Method Summary

Modifier and Type	Method	Description
void	close()
Index	getAdded()	Fetch the resulting index of added values.
Index	getModified()	Fetch the resulting index of modified values.
Index	getRemoved()	Fetch the resulting index of removed values.
void	validate(Index sourceIndex)	Perform backwards compatible validation checks.

Methods inherited from class java.lang.Object

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

Field Details

EMPTY

public static IndexShiftDataExpander EMPTY

Immutable, re-usable IndexShiftDataExpander for an empty set of changes.

Constructor Details

IndexShiftDataExpander

public IndexShiftDataExpander(ShiftAwareListener.Update update,
 Index sourceIndex)

Generates the backwards compatible ARM from an ARMS update.

Parameters:

update - The usptream update.

Method Details

getAdded

public Index getAdded()

Fetch the resulting index of added values.

Returns:

added index

getRemoved

public Index getRemoved()

Fetch the resulting index of removed values.

Returns:

removed index

getModified

public Index getModified()

Fetch the resulting index of modified values.

Returns:

modified index

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface SafeCloseable

validate

public void validate(Index sourceIndex)

Perform backwards compatible validation checks.

Parameters:

sourceIndex - the underlying index that apply to added/removed/modified