Package nl.basjes.modbus.schema.fetcher

Class RegisterBlockFetcher

  • All Implemented Interfaces:
    
public class RegisterBlockFetcher

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

    • Constructor Detail

      • RegisterBlockFetcher

        RegisterBlockFetcher(SchemaDevice schemaDevice, ModbusDevice modbusDevice)

    • Method Detail

      • update

         final List<RegisterBlockFetcher.FetchBatch> 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
        Returns:

        A (possibly empty) list of all fetches that have been done (with duration and status)

      • update

        @JvmOverloads() final List<RegisterBlockFetcher.FetchBatch> 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
        Returns:

        A (possibly empty) list of all fetches that have been done (with duration and status)

      • update

        @JvmOverloads() final List<RegisterBlockFetcher.FetchBatch> update()

        Update all registers related to the needed fields to be updated with a maximum age of the provided milliseconds

        Returns:

        A (possibly empty) list of all fetches that have been done (with duration and status)

      • 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)