Package org.apache.lucene.facet.taxonomy.directory

# Class DirectoryTaxonomyWriter.DiskOrdinalMap

java.lang.Object
org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyWriter.DiskOrdinalMap

All Implemented Interfaces:
  `DirectoryTaxonomyWriter.OrdinalMap`

Enclosing class:
  `DirectoryTaxonomyWriter`

public static final class DirectoryTaxonomyWriter.DiskOrdinalMap extends Object implements DirectoryTaxonomyWriter.OrdinalMap
`DirectoryTaxonomyWriter.OrdinalMap` maintained on file system

## Constructor Summary

Constructors
Constructor
Description
`DiskOrdinalMap(Path mapFile)`
Sole constructor.

## Method Summary

Modifier and Type
Method
Description
`void`
`addDone()`
Call addDone() to say that all addMapping() have been done.
`void`
`addMapping(int origOrdinal, int newOrdinal)`
Record a mapping.
`int[]`
`getMap()`
Return the map from the taxonomy's original (consecutive) ordinals to the new taxonomy's ordinals.
`void`
`setSize(int taxonomySize)`
Set the size of the map.

### Methods inherited from class java.lang.Object

`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

## Constructor Details

### DiskOrdinalMap

public DiskOrdinalMap(Path mapFile) throws IOException
Sole constructor.

Throws:
  `IOException`

## Method Details

### addMapping

public void addMapping(int origOrdinal, int newOrdinal) throws IOException
Description copied from interface: `DirectoryTaxonomyWriter.OrdinalMap`
Record a mapping.

Specified by:
  `addMapping` in interface `DirectoryTaxonomyWriter.OrdinalMap`
Throws:
  `IOException`

### setSize

public void setSize(int taxonomySize) throws IOException
Description copied from interface: `DirectoryTaxonomyWriter.OrdinalMap`
Set the size of the map. This MUST be called before addMapping(). It is assumed (but not verified) that addMapping() will then be called exactly 'size' times, with different origOrdinals between 0 and size-1.

Specified by:
  `setSize` in interface `DirectoryTaxonomyWriter.OrdinalMap`
Throws:
  `IOException`

### addDone

public void addDone() throws IOException
Description copied from interface: `DirectoryTaxonomyWriter.OrdinalMap`
Call addDone() to say that all addMapping() have been done. In some implementations this might free some resources.

Specified by:
  `addDone` in interface `DirectoryTaxonomyWriter.OrdinalMap`
Throws:
  `IOException`

### getMap

public int[] getMap() throws IOException
Description copied from interface: `DirectoryTaxonomyWriter.OrdinalMap`
Return the map from the taxonomy's original (consecutive) ordinals to the new taxonomy's ordinals. If the map has to be read from disk and ordered appropriately, it is done when getMap() is called. getMap() should only be called once, and only when the map is actually needed. Calling it will also free all resources that the map might be holding (such as temporary disk space), other than the returned int[].

Specified by:
  `getMap` in interface `DirectoryTaxonomyWriter.OrdinalMap`
Throws:
  `IOException`