com.apple.foundationdb.record

Class KeyRange

java.lang.Object

com.apple.foundationdb.record.KeyRange

@API(value=MAINTAINED)
public class KeyRange
extends Object

A range within a subspace specified by two byte value endpoints.

Constructor Summary

Constructors

Constructor and Description
KeyRange(byte[] lowKey, byte[] highKey) Creates a key range.
KeyRange(byte[] lowKey, EndpointType lowEndpoint, byte[] highKey, EndpointType highEndpoint) Creates a key range.

Method Summary

Modifier and Type	Method and Description
EndpointType	getHighEndpoint()
byte[]	getHighKey() Returns the upper boundary of the range to be scanned.
EndpointType	getLowEndpoint()
byte[]	getLowKey() Returns the lower boundary of the range to be scanned.

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyRange

public KeyRange(@Nonnull
                byte[] lowKey,
                @Nonnull
                EndpointType lowEndpoint,
                @Nonnull
                byte[] highKey,
                @Nonnull
                EndpointType highEndpoint)

Creates a key range.

Parameters:

lowKey - the starting key in the range. Note that a direct reference to this key is retained, so care must be taken not to modify its contents

lowEndpoint - how the low endpoint is to be treated

highKey - the ending key in the range. Note that a direct reference to this key is retained, so care must be taken not to modify its contents

highEndpoint - how the high endpoint is to be treated

KeyRange

public KeyRange(@Nonnull
                byte[] lowKey,
                @Nonnull
                byte[] highKey)

Creates a key range.

Parameters:

lowKey - the starting key of the range, inclusive

highKey - the ending key of the range, exclusive

Method Detail

getLowKey

@Nonnull
public byte[] getLowKey()

Returns the lower boundary of the range to be scanned. How this starting key is to be interpreted in relation to a scan (e.g., inclusive or exclusive) is determined by the low endpoint value (getLowEndpoint(). The value returned by this method should be treated as immutable and must not be modified by the caller.

Returns:

the low key of the range to be scanned

getLowEndpoint

@Nonnull
public EndpointType getLowEndpoint()

Returns:

how the lower boundary key of the range is to be interpreted by the scan (e.g. inclusive or exclusive)

getHighKey

@Nonnull
public byte[] getHighKey()

Returns the upper boundary of the range to be scanned. How this key is to be interpreted in relation to a scan (e.g., inclusive or exclusive) is determined by the high endpoint value (getHighEndpoint(). The value returned by this method should be treated as immutable and must not be modified by the caller.

Returns:

the high key of the range to be scanned

getHighEndpoint

@Nonnull
public EndpointType getHighEndpoint()

Returns:

how the upper boundary key of the range is to be interpreted by the scan (e.g. inclusive or exclusive)