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From "Simone Tripodi (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SANDBOX-372) Make the org.apache.commons.graph.visit.GraphVisitHandler able to return objects
Date Mon, 30 Jan 2012 12:59:10 GMT
Make the org.apache.commons.graph.visit.GraphVisitHandler able to return objects
--------------------------------------------------------------------------------

                 Key: SANDBOX-372
                 URL: https://issues.apache.org/jira/browse/SANDBOX-372
             Project: Commons Sandbox
          Issue Type: Improvement
          Components: Graph
            Reporter: Simone Tripodi
            Assignee: Simone Tripodi


Graph visit could produce output objects, taking inspiration form DbUtil's [ResultSetHandler|http://commons.apache.org/dbutils/apidocs/org/apache/commons/dbutils/ResultSetHandler.html]
and AsyncHttpClient's [AsyncHandler|http://sonatype.github.com/async-http-client/apidocs/com/ning/http/client/AsyncHandler.html]
it would be possible invoke:

{code}
final List<V> visited = visit( inputGraph ).from( startVertex ).applyingDepthFirstSearch(
new MyHandler() );
{code}

just adding a callback method in {{GraphVisitHandler}}, something like:

{code}
public interface GraphVisitHandler<V extends Vertex, E extends Edge, G extends Graph<V,
E>, O>
{

    [...]

    O onCompleted();

}
{code}

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