IndexAggregator (NetarchiveSuite 7.1 API)

java.lang.Object
- dk.netarkivet.wayback.aggregator.IndexAggregator

```
public class IndexAggregator
extends Object
```
Encapsulates the functionality for sorting and merging index files. Uses the Unix sort cmd for optimized sorting and file merging. Operations in this class are synchronized to avoid multiple jobs running at the same time (by the same object at least).

Constructor Summary

Constructors
Constructor Description

IndexAggregator()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`mergeFiles(File[] files, File outputFile)`	Takes a list of sorted files and merges them.
`void`	`sortAndMergeFiles(File[] files, File outputFile)`	Generates a sorted CDX index file based on the set of unsorted CDX input files.

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

- Constructor Detail
  - IndexAggregator
```
public IndexAggregator()
```
- Method Detail
  - sortAndMergeFiles
```
public void sortAndMergeFiles(File[] files,
                              File outputFile)
```
    Generates a sorted CDX index file based on the set of unsorted CDX input files.
    The operation will not run on a folder which already has a process job running.
    
    Parameters:
    
    files - A list of the files to aggregate
    
    outputFile - Name of the output file. In case of a empty filesNames array no outputFiles will be generated
  - mergeFiles
```
public void mergeFiles(File[] files,
                       File outputFile)
```
    Takes a list of sorted files and merges them.
    
    Parameters:
    
    files - The files to merge.
    
    outputFile - The resulting file containing total sorted set of index lines found in all the provided index files