Spring based Camel Aggregator to read multiple files - spring

Question

Problem Statement
I have two files File1 and File2 which needs to be parsed using camel Bindy.
The data from File1 and File2 needs to be aggregated and then inserted into database.
what is the best way to define the agregator is there a can somebody provide a sample implementation
Here is what i want
<!--route1 -->
<route>
<from ref="file1Endpoint" />
<unmarshal ref="pojo1" />
</route>
<!--route2 -->
<route>
<from ref="file2Endpoint" />
<unmarshal ref="pojo2" />
</route>

Answer 1

Use the Content Enricher providing an Aggregation Strategy, something like the below:
#Component
MyAggregationStrategy implements AggregationStrategy {
public static final String PRE_ENRICH_KEY = "PRE_ENRICH_KEY";
//this is meant to be called *before* the actual enrich call
//to store the state before the enrichment
public void init(Exchange exchange) {
final String originalBody = exchange.getIn().getBody(String.class);
exchange.setProperty(PRE_ENRICH_KEY, originalBody);
}
#Override
public Exchange aggregate(Exchange original, Exchange enrichmentResponse) {
final String originalBody = original.getProperty(PRE_ENRICH_KEY, String.class);
//enrichmentResponse is the Exchange coming from the 2nd file endpoint
//the enricher returns
//your processing logic to merge the 2 happens here
String result = //..
original.getIn().setBody(result);
return original;
}
}
And finally the route will look something like:
#Component
public class MyRouteBuilder extends RouteBuilder {
#Autowired
private MyAggregationStrategy myAggregateStrategy;
#Override
public void configure() throws Exception {
from("fileEndpoint1")
.bean(myAggregateStrategy, "init")
.enrich("fileEndpoint2", myMerger);
//continue from here one to Bindy
}
//..
}