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Tarantool client for java

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package org.tarantool.jdbc;

import org.tarantool.SqlProtoUtils;

import java.util.Collections;
import java.util.List;

/**
 * Union wrapper for SQL query results as well as
 * SQL update results.
 */
public class SQLResultHolder {

    public static final int NO_UPDATE_COUNT = -1;

    private final List sqlMetadata;
    private final List> rows;
    private final int updateCount;
    private final List generatedIds;

    public SQLResultHolder(List sqlMetadata,
                           List> rows,
                           int updateCount,
                           List generatedIds) {
        this.sqlMetadata = sqlMetadata;
        this.rows = rows;
        this.updateCount = updateCount;
        this.generatedIds = generatedIds;
    }

    public static SQLResultHolder ofQuery(final List sqlMetadata,
                                          final List> rows) {
        return new SQLResultHolder(sqlMetadata, rows, NO_UPDATE_COUNT, Collections.emptyList());
    }

    public static SQLResultHolder ofEmptyQuery() {
        return ofQuery(Collections.emptyList(), Collections.emptyList());
    }

    public static SQLResultHolder ofUpdate(int updateCount, List generatedIds) {
        return new SQLResultHolder(null, null, updateCount, generatedIds);
    }

    public List getSqlMetadata() {
        return sqlMetadata;
    }

    public List> getRows() {
        return rows;
    }

    public int getUpdateCount() {
        return updateCount;
    }

    public List getGeneratedIds() {
        return generatedIds;
    }

    public boolean isQueryResult() {
        return sqlMetadata != null && rows != null;
    }

}