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PSS/E raw format data model
There is a newer version: 6.6.0
/**
 * Copyright (c) 2020, RTE (http://www.rte-france.com)
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 * SPDX-License-Identifier: MPL-2.0
 */
package com.powsybl.psse.model.pf.io;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.powsybl.commons.datasource.DataSource;
import com.powsybl.commons.datasource.ReadOnlyDataSource;
import com.powsybl.psse.model.PsseException;
import com.powsybl.psse.model.PsseVersion;
import com.powsybl.psse.model.io.Context;
import com.powsybl.psse.model.io.LegacyTextReader;
import com.powsybl.psse.model.pf.PsseCaseIdentification;
import com.powsybl.psse.model.pf.PssePowerFlowModel;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import static com.powsybl.psse.model.io.FileFormat.JSON;

/**
 * PSSE RAWX data common to all versions
 * Should be able to read the case identification to obtain the version (case identification "rev" attribute)
 *
 * @author Luma Zamarreño {@literal }
 * @author José Antonio Marqués {@literal }
 */
public class PowerFlowRawxDataAllVersions implements PowerFlowData {

    @Override
    public boolean isValidFile(ReadOnlyDataSource dataSource, String ext) throws IOException {
        try (BufferedReader bReader = new BufferedReader(new InputStreamReader(dataSource.newInputStream(null, ext)))) {
            Context context = new Context();
            context.setFileFormat(JSON);
            LegacyTextReader reader = new LegacyTextReader(bReader);
            PsseCaseIdentification caseIdentification = new CaseIdentificationData().readHead(reader, context);
            caseIdentification.validate();
            return true;
        }
    }

    @Override
    public PsseVersion readVersion(ReadOnlyDataSource dataSource, String ext) throws IOException {
        try (BufferedReader bReader = new BufferedReader(new InputStreamReader(dataSource.newInputStream(null, ext)))) {
            Context context = new Context();
            context.setFileFormat(JSON);
            LegacyTextReader reader = new LegacyTextReader(bReader);
            PsseCaseIdentification caseIdentification = new CaseIdentificationData().readHead(reader, context);
            return PsseVersion.fromRevision(caseIdentification.getRev());
        }
    }

    @Override
    public PssePowerFlowModel read(ReadOnlyDataSource dataSource, String ext, Context context) throws IOException {
        throw new PsseException("RawXDataCommon does not know how to read complete data file. Specific version instance is required");
    }

    @Override
    public void write(PssePowerFlowModel model, Context context, DataSource dataSource) throws IOException {
        throw new PsseException("RawXDataCommon does not know how to write complete data file. Specific version instance is required");
    }

    protected JsonNode networkNode(InputStream stream) throws IOException {
        return new ObjectMapper().readTree(stream).get("network");
    }
}