ReverseLookup

All Known Implementing Classes:: ReverseLookup.Null, ReverseLookupListener

public interface ReverseLookup

For hierarchical table display, identify the row index key that corresponds to a given logical key.

Nested Class Summary

Nested Classes

Modifier and Type Interface Description

static class ReverseLookup.Null
A null implementation of a reverse lookup, suitable for a table without any key columns.
Field Summary

Fields

Modifier and Type Field Description

static ReverseLookup.Null NULL

Method Summary

Modifier and Type	Method	Description
`long`	`get(Object key)`	Gets the index value where key exists in the table, or the no-entry-value if it is not found in the table.
`String[]`	`getKeyColumns()`
`long`	`getNoEntryValue()`	Returns the value that will be returned from `get(java.lang.Object)` or if no entry exists for a given key.
`long`	`getPrev(Object key)`	Gets the index value where key previously in the table, or the no-entry-value if it is was not found in the table.

Field Details
- NULL
  
  static final ReverseLookup.Null NULL
Method Details
- get
  
  long get(Object key)
  
  Gets the index value where key exists in the table, or the no-entry-value if it is not found in the table.
  
  Parameters:
  
  key - a single object for a single column, or a SmartKey for multiple columns
  
  Returns:
  
  the row index where key exists in the table
- getPrev
  
  long getPrev(Object key)
  
  Gets the index value where key previously in the table, or the no-entry-value if it is was not found in the table.
  
  Parameters:
  
  key - a single object for a single column, or a SmartKey for multiple columns
  
  Returns:
  
  the row index where key previously existed in the table
- getNoEntryValue
  
  long getNoEntryValue()
  
  Returns the value that will be returned from get(java.lang.Object) or if no entry exists for a given key.
- getKeyColumns
  
  String[] getKeyColumns()
  
  Returns:
  
  the key columns this reverse lookup is indexed on