org.apache.solr.handler.dataimport

Class Transformer

java.lang.Object

org.apache.solr.handler.dataimport.Transformer

Direct Known Subclasses:

ClobTransformer, DateFormatTransformer, HTMLStripTransformer, LogTransformer, NumberFormatTransformer, RegexTransformer, ScriptTransformer, TemplateTransformer

public abstract class Transformer
extends Object

Use this API to implement a custom transformer for any given entity

Implementations of this abstract class must provide a public no-args constructor.

Refer to http://wiki.apache.org/solr/DataImportHandler for more details.

This API is experimental and may change in the future.

Since:

solr 1.3

Version:

$Id: Transformer.java 1044562 2010-12-11 02:24:12Z koji $

Constructor Summary

Constructors

Constructor and Description
Transformer()

Method Summary

Methods

Modifier and Type	Method and Description
abstract Object	transformRow(Map<String,Object> row, Context context) The input is a row of data and the output has to be a new row.

Methods inherited from class java.lang.Object

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

Constructor Detail

Transformer

public Transformer()

Method Detail

transformRow

public abstract Object transformRow(Map<String,Object> row,
                  Context context)

The input is a row of data and the output has to be a new row.

Parameters:

context - The current context

row - A row of data

Returns:

The changed data. It must be a Map<String, Object> if it returns only one row or if there are multiple rows to be returned it must be a List<Map<String, Object>>