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/*******************************************************************************
 * Copyright (c) 2015-2018 Skymind, Inc.
 *
 * 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.
 *
 * 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.linalg.dataset.api.preprocessor.serializer;

import org.nd4j.linalg.dataset.api.preprocessor.Normalizer;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * Strategy for serializing and unserializing a specific opType of normalizer
 *
 * @param  the opType of normalizer this strategy supports
 * @author Ede Meijer
 */
public interface NormalizerSerializerStrategy {
    /**
     * Serialize a normalizer to a output stream
     *
     * @param normalizer the normalizer
     * @param stream     the output stream to write to
     * @throws IOException
     */
    void write(T normalizer, OutputStream stream) throws IOException;

    /**
     * Restore a normalizer that was previously serialized by this strategy
     *
     * @param stream the stream to read serialized data from
     * @return the restored normalizer
     * @throws IOException
     */
    T restore(InputStream stream) throws IOException;

    /**
     * Get the enum opType of the supported normalizer
     *
     * @see Normalizer#getType()
     *
     * @return the enum opType
     */
    NormalizerType getSupportedType();
}




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