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/*
 *  ******************************************************************************
 *  *
 *  *
 *  * This program and the accompanying materials are made available under the
 *  * terms of the Apache License, Version 2.0 which is available at
 *  * https://www.apache.org/licenses/LICENSE-2.0.
 *  *
 *  *  See the NOTICE file distributed with this work for additional
 *  *  information regarding copyright ownership.
 *  * Unless required by applicable law or agreed to in writing, software
 *  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 *  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 *  * License for the specific language governing permissions and limitations
 *  * under the License.
 *  *
 *  * SPDX-License-Identifier: Apache-2.0
 *  *****************************************************************************
 */

package org.nd4j.autodiff.execution;

import org.nd4j.autodiff.execution.conf.ExecutorConfiguration;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.linalg.api.ndarray.INDArray;

import java.io.File;
import java.nio.ByteBuffer;
import java.util.Map;

public class BasicGraphExecutioner implements GraphExecutioner {
    /**
     * This method returns Type of this executioner
     *
     * @return
     */
    @Override
    public Type getExecutionerType() {
        return Type.LOCAL;
    }

    /**
     * This method executes given graph and returns results
     *
     * @param graph
     * @return
     */
    @Override
    public INDArray[] executeGraph(SameDiff graph, ExecutorConfiguration configuration) {
//        return new INDArray[]{graph.execAndEndResult()};
        throw new UnsupportedOperationException("Not yet reimplemented");
    }

    /**
     *
     * @param diff
     * @return
     */
    public ByteBuffer convertToFlatBuffers(SameDiff diff, ExecutorConfiguration configuration) {
        throw new UnsupportedOperationException();
    }


    /**
     * This method executes given graph and returns results
     *
     * PLEASE NOTE: Default configuration is used
     *
     * @param sd
     * @return
     */
    @Override
    public INDArray[] executeGraph(SameDiff sd) {
        return executeGraph(sd, new ExecutorConfiguration());
    }

    @Override
    public INDArray[] reuseGraph(SameDiff graph, Map inputs) {
        throw new UnsupportedOperationException();
    }

    /**
     * This method executes
     *
     * @param id
     * @param variables
     * @return
     */
    @Override
    public INDArray[] executeGraph(int id, SDVariable... variables) {
        // TODO: to be implemented
        throw new UnsupportedOperationException("Not implemented yet");
    }

    /**
     * This method stores given graph for future execution
     *
     * @param graph
     * @return
     */
    @Override
    public int registerGraph(SameDiff graph) {
        // TODO: to be implemented
        throw new UnsupportedOperationException("Not implemented yet");
    }

    @Override
    public INDArray[] importProto(File file) {
        // TODO: to be implemented
        throw new UnsupportedOperationException("Not implemented yet");
    }
}