EdgeHistoryLicense

java.lang.Object

com.inductiveautomation.historian.gateway.license.EdgeHistoryLicense

All Implemented Interfaces:: LicenseStateUpdateListener, EventListener

public class EdgeHistoryLicense extends Object implements LicenseStateUpdateListener

Method Summary

Modifier and Type

Method

Description

static EdgeHistoryLicense

create(GatewayContext context)

I prefer this static creation in order to avoid implying the adding of listeners in the constructor.

boolean

isActive()

static boolean

isActive(GatewayContext context)

Returns whether tag history is available and not demo expired.

boolean

isUnlimited()

static boolean

isUnlimited(GatewayContext context)

We allow unlimited local history with any kind of tag historian license installed.

void

licenseStateUpdated(LicenseStateUpdateEvent e)

The LicenseState for the module specified in the LicenseStateChangeEvent has been updated.

protected void

refreshState()

void

shutdown()

void

startup()

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details
- create
  
  public static EdgeHistoryLicense create(GatewayContext context)
  
  I prefer this static creation in order to avoid implying the adding of listeners in the constructor. That is, it balances shutdown()
- startup
  
  public void startup()
- shutdown
  
  public void shutdown()
- isActive
  
  public boolean isActive()
- isUnlimited
  
  public boolean isUnlimited()
- licenseStateUpdated
  
  public void licenseStateUpdated(LicenseStateUpdateEvent e)
  
  Description copied from interface: LicenseStateUpdateListener
  
  The LicenseState for the module specified in the LicenseStateChangeEvent has been updated. Module id of empty-string represents the license state for the Ignition platform itself.
  
  Specified by:
  
  licenseStateUpdated in interface LicenseStateUpdateListener
  
  Parameters:
  
  e - The LicenseStateUpdateEvent
- refreshState
  
  protected void refreshState()
- isActive
  
  public static boolean isActive(GatewayContext context)
  
  Returns whether tag history is available and not demo expired.
- isUnlimited
  
  public static boolean isUnlimited(GatewayContext context)
  
  We allow unlimited local history with any kind of tag historian license installed.