DatabaseStatusHandler 26.1.0 API

All Implemented Interfaces:
```
public interface DatabaseStatusHandler

                    
```
Database upgrade status handler.
Notifies the caller about the SDK's internal database upgrade lifecycle:
- onUpgradeWillStart: upgrade is about to begin
- onUpgrading: upgrade progress (0-100%)
- onUpgradeCompleted: upgrade finished (check error for success/failure)
Register via NCEngine.addDatabaseStatusHandler.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description

Constructor Summary

Constructors
Constructor	Description

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`Unit`	`onUpgradeWillStart(DatabaseUpgradeWillStartEvent event)`	Called when the database upgrade is about to start.
`Unit`	`onUpgrading(DatabaseUpgradingEvent event)`	Called during the database upgrade to report progress.
`Unit`	`onUpgradeCompleted(DatabaseUpgradeCompletedEvent event)`	Called when the database upgrade completes.

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

- Constructor Detail
- Method Detail
  - onUpgradeWillStart
```
 Unit onUpgradeWillStart(DatabaseUpgradeWillStartEvent event)
```
    Called when the database upgrade is about to start.
    
    Parameters:
    
    event - Database upgrade will start event
  - onUpgrading
```
 Unit onUpgrading(DatabaseUpgradingEvent event)
```
    Called during the database upgrade to report progress.
    
    Parameters:
    
    event - Database upgrading event containing progress (0~100)
  - onUpgradeCompleted
```
 Unit onUpgradeCompleted(DatabaseUpgradeCompletedEvent event)
```
    Called when the database upgrade completes.
    
    Parameters:
    
    event - Database upgrade completed event