org.apache.nifi.remote

Class StandardVersionNegotiator

java.lang.Object

org.apache.nifi.remote.StandardVersionNegotiator

All Implemented Interfaces:

VersionNegotiator

public class StandardVersionNegotiator
extends Object
implements VersionNegotiator

Field Summary

Fields

Modifier and Type	Field and Description
private int	curVersion
private List<Integer>	versions

Constructor Summary

Constructors

Constructor and Description
StandardVersionNegotiator(int... supportedVersions)

Method Summary

Modifier and Type	Method and Description
int	getPreferredVersion()
Integer	getPreferredVersion(int maxVersion) Gets the preferred version of this resource that is no greater than the given maxVersion.
List<Integer>	getSupportedVersions()
int	getVersion()
boolean	isVersionSupported(int version) Indicates whether or not the specified version is supported by this resource
void	setVersion(int version) Sets the version of this resource to the specified version.

Methods inherited from class java.lang.Object

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

Field Detail

versions

private final List<Integer> versions

curVersion

private int curVersion

Constructor Detail

StandardVersionNegotiator

public StandardVersionNegotiator(int... supportedVersions)

Method Detail

getVersion

public int getVersion()

Specified by:

getVersion in interface VersionNegotiator

Returns:

the currently configured Version of this resource

setVersion

public void setVersion(int version)
                throws IllegalArgumentException

Description copied from interface: VersionNegotiator

Sets the version of this resource to the specified version. Only the lower byte of the version is relevant.

Specified by:

setVersion in interface VersionNegotiator

Parameters:

version - the version to set

Throws:

IllegalArgumentException - if the given Version is not supported by this resource, as is indicated by the VersionNegotiator.isVersionSupported(int) method

getPreferredVersion

public int getPreferredVersion()

Specified by:

getPreferredVersion in interface VersionNegotiator

Returns:

the Version of this resource that is preferred

getPreferredVersion

public Integer getPreferredVersion(int maxVersion)

Description copied from interface: VersionNegotiator

Gets the preferred version of this resource that is no greater than the given maxVersion. If no acceptable version exists that is less than maxVersion, then null is returned

Specified by:

getPreferredVersion in interface VersionNegotiator

Parameters:

maxVersion - the maximum version desired

Returns:

the preferred version if found; null otherwise

isVersionSupported

public boolean isVersionSupported(int version)

Description copied from interface: VersionNegotiator

Indicates whether or not the specified version is supported by this resource

Specified by:

isVersionSupported in interface VersionNegotiator

Parameters:

version - the version to test

Returns:

true if supported; false otherwise

getSupportedVersions

public List<Integer> getSupportedVersions()

Specified by:

getSupportedVersions in interface VersionNegotiator