QueryHandler

public interface QueryHandler

A callback interface to be implemented for handling of queries on storages or evals. See Session.declareStorage(String,StorageHandler) and Session.declareEval(String,QueryHandler).

Methods

handleQuery

public void handleQuery(String rname, String predicate, RepliesSender repliesSender)

The method that will be called on reception of query matching the stored/evaluated resource selection. The implementation must provide the data matching the resource rname by calling the RepliesSender.sendReplies(Resource[]) method with the data as argument. The RepliesSender.sendReplies(Resource[]) method MUST be called but accepts empty data array. This call can be made in the current Thread or in a different Thread.

Parameters:

• rname – the resource name of the queried data.
• predicate – a string provided by the querier refining the data to be provided.
• repliesSender – a RepliesSender on which the sendReplies() function MUST be called with the provided data as argument.