ValueConverter (Starjava TTOOLS API)

All Known Implementing Classes:: Iso8601Converter, Iso8601ToDecimalYear, Iso8601ToJulian, SexagesimalToDegrees

public interface ValueConverter

Defines a conversion from one data type to another.

Instances of this class should be thread-safe.

Since:: 24 Feb 2006
Author:: Mark Taylor

Method Summary

Modifier and Type

Method

Description

Object

convert(Object in)

Performs a conversion from the input type to the output type.

uk.ac.starlink.table.ValueInfo

getInputInfo()

Returns metadata describing the values on the input end of the conversion.

uk.ac.starlink.table.ValueInfo

getOutputInfo()

Returns metadata describing the values on the output end of the conversion.

Object

unconvert(Object out)

Performs a reverse conversion, from the output type to the input type.

Method Details
- getInputInfo
  
  uk.ac.starlink.table.ValueInfo getInputInfo()
  
  Returns metadata describing the values on the input end of the conversion.
  
  Returns:
  
  input info
- getOutputInfo
  
  uk.ac.starlink.table.ValueInfo getOutputInfo()
  
  Returns metadata describing the values on the output end of the conversion.
  
  Returns:
  
  output info
- convert
  
  Object convert(Object in)
  
  Performs a conversion from the input type to the output type. In general if the conversion cannot be done, a null value should be returned rather than throwing an unchecked exception.
  
  Parameters:
  
  in - object of input type
  
  Returns:
  
  corresponding object of output type
- unconvert
  
  Object unconvert(Object out)
  
  Performs a reverse conversion, from the output type to the input type. In general if the conversion cannot be done, a null value should be returned rather than throwing an unchecked exception.
  
  Parameters:
  
  out - object of output type
  
  Returns:
  
  corresponding object of input type