org.springframework.batch.item.file.transform
Class LineAggregatorItemTransformer

java.lang.Object
  org.springframework.batch.item.file.transform.LineAggregatorItemTransformer

All Implemented Interfaces:

ItemTransformer

public class LineAggregatorItemTransformer
extends Object
implements ItemTransformer

An ItemTransformer that expects a String[] as input and delegates to a LineAggregator.

Author:

Dave Syer

Constructor Summary

LineAggregatorItemTransformer()

Method Summary

protected FieldSet	createFieldSet(Object item) Extension point for subclasses.
void	setAggregator(LineAggregator aggregator) Public setter for the LineAggregator.
Object	transform(Object item) Assume the item is an array of String (no check is made) and delegate to the aggregator.

Methods inherited from class java.lang.Object

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

Constructor Detail

LineAggregatorItemTransformer

public LineAggregatorItemTransformer()

Method Detail

setAggregator

public void setAggregator(LineAggregator aggregator)

Public setter for the LineAggregator.

Parameters:

aggregator - the aggregator to set

transform

public Object transform(Object item)
                 throws Exception

Assume the item is an array of String (no check is made) and delegate to the aggregator.

Specified by:

transform in interface ItemTransformer

Throws:

Exception

See Also:

ItemTransformer.transform(java.lang.Object)

createFieldSet

protected FieldSet createFieldSet(Object item)
                           throws ConversionException

Extension point for subclasses. The default implementation just attempts to cast the item to String[] and creates a DefaultFieldSet from it.

Parameters:

item - an object (in this implementation of type String[]).

Returns:

a FieldSet representing the item

Throws:

ConversionException - if the field set cannot be created