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/*-
 *  * Copyright 2016 Skymind, Inc.
 *  *
 *  *    Licensed under the Apache License, Version 2.0 (the "License");
 *  *    you may not use this file except in compliance with the License.
 *  *    You may obtain a copy of the License at
 *  *
 *  *        http://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.
 */

package org.datavec.api.transform.sequence;


import lombok.Data;
import lombok.EqualsAndHashCode;
import org.datavec.api.transform.metadata.ColumnMetaData;
import org.datavec.api.transform.schema.Schema;
import org.datavec.api.transform.schema.SequenceSchema;
import org.nd4j.shade.jackson.annotation.JsonIgnoreProperties;

import java.util.ArrayList;
import java.util.List;

/**
 * Split up the values in sequences to a set of individual values.

 * i.e., sequences are split up, such that each time step in the sequence is treated as a separate example
 *
 * @author Alex Black
 */
@Data
@EqualsAndHashCode(exclude = {"inputSchema"})
@JsonIgnoreProperties({"inputSchema"})
public class ConvertFromSequence {

    private SequenceSchema inputSchema;

    public ConvertFromSequence() {

    }

    public Schema transform(SequenceSchema schema) {
        List meta = new ArrayList<>(schema.getColumnMetaData());

        return new Schema(meta);
    }

    @Override
    public String toString() {
        return "ConvertFromSequence()";
    }

}