tim@132: package de.intevation.gnv.geobackend.base.query;
tim@132: 
sascha@886: import de.intevation.gnv.geobackend.base.Result;
tim@132: 
tim@132: import de.intevation.gnv.geobackend.base.query.exception.QueryException;
tim@132: 
sascha@886: import java.util.Collection;
sascha@886: 
tim@132: /**
tim@132:  * This Interface provides the Method to execute Queries
tim@132:  * against a Datastore eg. Databases
tim@132:  * @author Tim Englich <tim.englich@intevation.de>
tim@132:  *
tim@132:  */
tim@132: public interface QueryExecutor {
tim@132: 
tim@132: 
tim@132:     /**
tim@132:      * This Method executes the Query an returns the Result
tim@132:      * in an Collection.
tim@132:      * @param queryID the ID of the Query which should be used.
tim@132:      * @param filter the Filterarguments to limit the Data
tim@132:      * @return the fetched Values
tim@132:      * @throws QueryException
tim@132:      */
sascha@541:     Collection<Result> executeQuery(String queryID, String[] filter) throws QueryException;
sascha@541: 
sascha@541:     Collection<Result> cachedResults(String query);
sascha@541: 
sascha@541:     void cacheResults(String query, Collection<Result> results);
tim@132: }