AbstractStreamConversionFilter (ELKI: Environment for DeveLoping KDD-Applications Supported by Index-Structures)

java.lang.Object
- elki.datasource.filter.AbstractStreamFilter
- - elki.datasource.filter.AbstractStreamConversionFilter<I,O>

Type Parameters:

I - Input object type

O - Input object type

All Implemented Interfaces:

elki.datasource.bundle.BundleStreamSource, elki.datasource.filter.ObjectFilter, elki.datasource.filter.StreamFilter

Direct Known Subclasses:

AbstractVectorStreamConversionFilter, MultivariateTimeSeriesFilter
```
public abstract class AbstractStreamConversionFilter<I,O>
extends AbstractStreamFilter
```
Abstract base class for simple conversion filters such as normalizations and projections.

Since:

0.5.0

Author:

Erich Schubert

Nested Class Summary
- Nested classes/interfaces inherited from interface elki.datasource.bundle.BundleStreamSource
  elki.datasource.bundle.BundleStreamSource.Event

Field Summary

Fields
Modifier and Type Field Description

(package private) int column
The column to filter.

(package private) elki.datasource.bundle.BundleMeta meta
The filtered meta.
- Fields inherited from class elki.datasource.filter.AbstractStreamFilter
  source

Constructor Summary

Constructors
Constructor Description

AbstractStreamConversionFilter()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`protected abstract elki.data.type.SimpleTypeInformation<? super O>`	`convertedType(elki.data.type.SimpleTypeInformation<I> in)`	Get the output type from the input type after conversion.
`java.lang.Object`	`data(int rnum)`
`protected abstract O`	`filterSingleObject(I obj)`	Normalize a single instance.
`protected abstract elki.data.type.TypeInformation`	`getInputTypeRestriction()`	Get the input type restriction used for negotiating the data query.
`elki.datasource.bundle.BundleMeta`	`getMeta()`
`elki.datasource.bundle.BundleStreamSource.Event`	`nextEvent()`

Methods inherited from class elki.datasource.filter.AbstractStreamFilter
asMultipleObjectsBundle, assignDBID, filter, hasDBIDs, init, toString

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - meta
```
elki.datasource.bundle.BundleMeta meta
```
    The filtered meta.
  - column
```
int column
```
    The column to filter.
- Constructor Detail
  - AbstractStreamConversionFilter
```
public AbstractStreamConversionFilter()
```
- Method Detail
  - getMeta
```
public elki.datasource.bundle.BundleMeta getMeta()
```
  - data
```
public java.lang.Object data(int rnum)
```
  - nextEvent
```
public elki.datasource.bundle.BundleStreamSource.Event nextEvent()
```
  - filterSingleObject
```
protected abstract O filterSingleObject(I obj)
```
    Normalize a single instance. You can implement this as UnsupportedOperationException if you override both public "normalize" functions!
    
    Parameters:
    
    obj - Database object to normalize
    
    Returns:
    
    Normalized database object
  - getInputTypeRestriction
```
protected abstract elki.data.type.TypeInformation getInputTypeRestriction()
```
    Get the input type restriction used for negotiating the data query.
    
    Returns:
    
    Type restriction
  - convertedType
```
protected abstract elki.data.type.SimpleTypeInformation<? super O> convertedType(elki.data.type.SimpleTypeInformation<I> in)
```
    Get the output type from the input type after conversion.
    
    Parameters:
    
    in - input type restriction
    
    Returns:
    
    output type restriction