Elasticsearch put mapping

gistfile1.txt

String mapping = getMapFile(aliasName);

if(mapping != null)
{
	elasticClient.admin().indices().putMapping(new PutMappingRequest(indexName).source(getMapFile(aliasName)));
}

...

private String getMapFile(String aliasName)
{
	InputStream is = AliasingRebuildService.class.getResourceAsStream(String.format("/mappings/%s.json", aliasName));
	
	try
	{
		if(is == null)
		{
			return null;
		}
		
		return IOUtils.toString(is);	
	}
	catch(Exception e)
	{
		throw new RuntimeException(e);
	}
}