IndexMapper

All Known Implementing Classes:

AddressBasedIndexMapper
```
public interface IndexMapper
```
Interface for mapping indexes when the LayoutModel changes. In other words, if the mapping of layout indexes to some data model changes and you want the FieldPanel to continue to display the same model data on the screen, the IndexMapper can be used to convert old indexes to new indexes.

Field Summary

Fields
Modifier and Type Field Description

static IndexMapper IDENTITY_MAPPER

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.math.BigInteger`	`map(java.math.BigInteger value)`	Maps an index from one address mapping to another.

- Field Detail
  - IDENTITY_MAPPER
```
static final IndexMapper IDENTITY_MAPPER
```
- Method Detail
  - map
```
java.math.BigInteger map(java.math.BigInteger value)
```
    Maps an index from one address mapping to another. This method will return BigInteger.ZERO if there no mapping.
    
    Parameters:
    
    value - the index value to map from an old index map to a new index map
    
    Returns:
    
    the mapped index