ai.grakn.QueryExecutor Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of grakn-core Show documentation

There is a newer version: 1.4.3

/*
 * GRAKN.AI - THE KNOWLEDGE GRAPH
 * Copyright (C) 2018 Grakn Labs Ltd
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see .
 */

package ai.grakn;

import ai.grakn.graql.AggregateQuery;
import ai.grakn.graql.ComputeQuery;
import ai.grakn.graql.DefineQuery;
import ai.grakn.graql.DeleteQuery;
import ai.grakn.graql.GetQuery;
import ai.grakn.graql.InsertQuery;
import ai.grakn.graql.UndefineQuery;
import ai.grakn.graql.answer.Answer;
import ai.grakn.graql.answer.ConceptMap;
import ai.grakn.graql.answer.ConceptSet;

import java.util.stream.Stream;

/**
 * Interface for executing queries and getting a result. Examples of possible implementations are: running the query
 * against a tinkerpop graph, or sending the query to some server to execute via gRPC or a REST API.
 *
 * This class allows us to decouple query representation (in {@link ai.grakn.graql.Query}) from query execution
 * (here in {@link QueryExecutor}).
 */
public interface QueryExecutor {

    Stream run(DefineQuery query);

    Stream run(UndefineQuery query);

    Stream run(GetQuery query);

    Stream run(InsertQuery query);

    Stream run(DeleteQuery query);

     Stream run(AggregateQuery query);

     ComputeExecutor run(ComputeQuery query);
}