org.smigo.species.JdbcRuleDao.java Source code

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Here is the source code for org.smigo.species.JdbcRuleDao.java

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package org.smigo.species;

/*
 * #%L
 * Smigo
 * %%
 * Copyright (C) 2015 Christian Nilsson
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
 * #L%
 */

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.ResultSetExtractor;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Repository;

import javax.sql.DataSource;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Repository
class JdbcRuleDao implements RuleDao {
    private static final String SELECT = "SELECT * FROM rules";
    private static final String SELECT_IMPACTS = "SELECT * FROM rules_x_impacts";
    private JdbcTemplate jdbcTemplate;

    @Autowired
    public void setDataSource(DataSource dataSource) {
        this.jdbcTemplate = new JdbcTemplate(dataSource);
    }

    @Autowired
    private FamilyDao familyDao;

    @Override
    public List<Rule> getRules() {
        final Map<Integer, List<Integer>> impacts = getImpacts();
        return jdbcTemplate.query(SELECT, new RowMapper<Rule>() {
            @Override
            public Rule mapRow(ResultSet rs, int rowNum) throws SQLException {
                final int id = rs.getInt("id");
                final int host = rs.getInt("host");
                final int type = rs.getInt("type");
                final int causerSpecies = rs.getInt("causer"); //todo rename to causerspecies
                final int causerFamily = rs.getInt("causerfamily");
                final int gap = rs.getInt("gap"); //todo should return null if not set
                return Rule.create(id, host, type, causerSpecies, causerFamily, gap, impacts.get(id));
            }
        });
    }

    public Map<Integer, List<Integer>> getImpacts() {
        return jdbcTemplate.query(SELECT_IMPACTS, new ResultSetExtractor<Map<Integer, List<Integer>>>() {
            @Override
            public Map<Integer, List<Integer>> extractData(ResultSet rs) throws SQLException, DataAccessException {
                Map<Integer, List<Integer>> ret = new HashMap<Integer, List<Integer>>();
                while (rs.next()) {
                    final int ruleId = rs.getInt("rule_id");
                    final int impactId = rs.getInt("impact_id");
                    if (ret.get(ruleId) == null) {
                        ret.put(ruleId, new ArrayList<>());
                    }
                    ret.get(ruleId).add(impactId);
                }
                return ret;
            }
        });
    }
}