RegisterBlockFetcher

All Implemented Interfaces:
```
public class RegisterBlockFetcher

                    
```
A RegisterBlockFetcher needs to have a Schema, a target RegisterBlock and a ModbusDevice

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public class`	`RegisterBlockFetcher.FetchBatch`
`public final class`	`RegisterBlockFetcher.MergedFetchBatch`	When doing fetch optimization we are sometimes combining the FetchBatches. This is the class to hold such a combination. This is needed to be able to handle the retry in case of a read error

Field Summary

Fields
Modifier and Type	Field	Description

Constructor Summary

Constructors
Constructor	Description
`RegisterBlockFetcher(SchemaDevice schemaDevice, ModbusDevice modbusDevice)`

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`final Unit`	`update(Field field)`	We force an immediate update of all registers needed for the provided field.
`final Unit`	`update(Long maxAge)`	Update all registers related to the needed fields to be updated with a maximum age of the provided milliseconds
`final Unit`	`update()`	Update all registers related to the needed fields to be updated with a maximum age of the provided milliseconds
`List<RegisterBlockFetcher.FetchBatch>`	`calculateFetchBatches(Long maxAge)`	Determine which sets of registers need to be retrieved again.

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

- Constructor Detail
  - RegisterBlockFetcher
```
RegisterBlockFetcher(SchemaDevice schemaDevice, ModbusDevice modbusDevice)
```
- Method Detail
  - update
```
 final Unit update(Field field)
```
    We force an immediate update of all registers needed for the provided field. No batching, buffering or any optimization is done.
    
    Parameters:
    
    field - The field that must be updated
  - update
```
@JvmOverloads() final Unit update(Long maxAge)
```
    Update all registers related to the needed fields to be updated with a maximum age of the provided milliseconds
    
    Parameters:
    
    maxAge - maximum age of the fields in milliseconds
  - update
```
@JvmOverloads() final Unit update()
```
    Update all registers related to the needed fields to be updated with a maximum age of the provided milliseconds
  - calculateFetchBatches
```
 List<RegisterBlockFetcher.FetchBatch> calculateFetchBatches(Long maxAge)
```
    Determine which sets of registers need to be retrieved again.
    
    Parameters:
    
    maxAge - The maximum age (in milliseconds) of the data for it to need an update.
    
    Returns:
    
    The list of address ranges that must be retrieved (Sorted by the start address)