ru.org.linux.user.IgnoreListDao.java Source code

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Here is the source code for ru.org.linux.user.IgnoreListDao.java

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/*
 * Copyright 1998-2012 Linux.org.ru
 *    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 ru.org.linux.user;

import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSet.Builder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowCallbackHandler;
import org.springframework.stereotype.Repository;
import ru.org.linux.auth.AccessViolationException;

import javax.annotation.Nonnull;
import javax.sql.DataSource;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Set;

@Repository
public class IgnoreListDao {
    private static final String queryIgnoreList = "SELECT a.ignored FROM ignore_list a WHERE a.userid=?";
    private static final String queryIgnoreStat = "SELECT count(*) as inum FROM ignore_list JOIN users ON  ignore_list.userid = users.id WHERE ignored=? AND not blocked";

    private JdbcTemplate jdbcTemplate;

    @Autowired
    public void setDataSource(DataSource ds) {
        jdbcTemplate = new JdbcTemplate(ds);
    }

    public void addUser(User listOwner, User userToIgnore) throws AccessViolationException {
        if (userToIgnore.isModerator()) {
            throw new AccessViolationException("??  ");
        }

        jdbcTemplate.update("INSERT INTO ignore_list (userid,ignored) VALUES(?,?)", listOwner.getId(),
                userToIgnore.getId());
    }

    public void remove(User listOwner, User userToIgnore) {
        jdbcTemplate.update("DELETE FROM ignore_list WHERE userid=? AND ignored=?", listOwner.getId(),
                userToIgnore.getId());
    }

    /**
     *  ?? 
     * @param user   
     * @return ?? 
     */
    @Nonnull
    public Set<Integer> get(@Nonnull User user) {
        final Builder<Integer> builder = ImmutableSet.builder();
        jdbcTemplate.query(queryIgnoreList, new RowCallbackHandler() {
            @Override
            public void processRow(ResultSet resultSet) throws SQLException {
                builder.add(resultSet.getInt("ignored"));
            }
        }, user.getId());
        return builder.build();
    }

    public int getIgnoreStat(User ignoredUser) {
        return jdbcTemplate.queryForInt(queryIgnoreStat, ignoredUser.getId());
    }
}