Package com.apple.foundationdb.record

Class ScanProperties

java.lang.Object

com.apple.foundationdb.record.ScanProperties

@API(UNSTABLE)
public class ScanProperties
extends Object

A group of properties that pertain to a single scan. Among these properties is an ExecuteProperties, which holds the properties that pertain to an entire execution.

Field Summary

Fields

Modifier and Type	Field	Description
static final ScanProperties	FORWARD_SCAN
static final ScanProperties	REVERSE_SCAN

Constructor Summary

Constructors

Constructor	Description
ScanProperties(ExecuteProperties executeProperties)	Creates scan properties.
ScanProperties(ExecuteProperties executeProperties, boolean reverse)	Creates scan properties.
ScanProperties(ExecuteProperties executeProperties, boolean reverse, CursorStreamingMode cursorStreamingMode)	Creates scan properties.

Method Summary

Modifier and Type	Method	Description
CursorStreamingMode	getCursorStreamingMode()	Get cursor streaming mode.
ExecuteProperties	getExecuteProperties()	Get execute properties for this scan properties.
boolean	isReverse()	Get direction of scans.
ScanProperties	setReverse(boolean reverse)	Change direction of scans.
ScanProperties	setStreamingMode(CursorStreamingMode cursorStreamingMode)	Set cursor streaming mode.
String	toString()
ScanProperties	with(Function<ExecuteProperties,ExecuteProperties> modifier)	Change execute properties.

Methods inherited from class java.lang.Object

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

Field Details

FORWARD_SCAN

public static final ScanProperties FORWARD_SCAN

REVERSE_SCAN

public static final ScanProperties REVERSE_SCAN

Constructor Details

ScanProperties

public ScanProperties(@Nonnull
 ExecuteProperties executeProperties)

Creates scan properties.

Parameters:

executeProperties - the execution properties (such as isolation level and row limit) associated with this scan

ScanProperties

public ScanProperties(@Nonnull
 ExecuteProperties executeProperties,
 boolean reverse)

Creates scan properties.

Parameters:

executeProperties - the execution properties (such as isolation level and row limit) associated with this scan

reverse - if true, the scan direction will be reversed

ScanProperties

public ScanProperties(@Nonnull
 ExecuteProperties executeProperties,
 boolean reverse,
 @Nonnull
 CursorStreamingMode cursorStreamingMode)

Creates scan properties.

Parameters:

executeProperties - the execution properties (such as isolation level and row limit) associated with this scan

reverse - if true, the scan direction will be reversed

cursorStreamingMode - streaming mode to use if opening an FDB cursor

Method Details

isReverse

public boolean isReverse()

Get direction of scans.

Returns:

true if scan is in reverse order

getExecuteProperties

@Nonnull
public ExecuteProperties getExecuteProperties()

Get execute properties for this scan properties.

Returns:

execute properties for this scan properties.

with

@Nonnull
public ScanProperties with(@Nonnull
 Function<ExecuteProperties,ExecuteProperties> modifier)

Change execute properties.

Parameters:

modifier - a function to produce a new execute properties from the current one

Returns:

a new scan properties with updated execute properties

setReverse

@Nonnull
public ScanProperties setReverse(boolean reverse)

Change direction of scans.

Parameters:

reverse - true if scan is in reverse order

Returns:

a new scan properties with given direction

getCursorStreamingMode

@Nonnull
public CursorStreamingMode getCursorStreamingMode()

Get cursor streaming mode.

Returns:

cursor streaming mode

setStreamingMode

@Nonnull
public ScanProperties setStreamingMode(@Nonnull
 CursorStreamingMode cursorStreamingMode)

Set cursor streaming mode.

Parameters:

cursorStreamingMode - cursor streaming mode to set

Returns:

a new scan properties with given streaming mode

toString

public String toString()

Overrides:

toString in class Object