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package it.inaf.ia2.gms.persistence;
import it.inaf.ia2.gms.persistence.model.NewGroup;
import java.sql.PreparedStatement;
import java.sql.Types;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Component;
@Component
public class GroupsDAO {
private final JdbcTemplate jdbcTemplate;
@Autowired
public GroupsDAO(DataSource dataSource) {
jdbcTemplate = new JdbcTemplate(dataSource);
}
public NewGroup createGroup(NewGroup group) {
String sql = "INSERT INTO gms_group (id, name, path) VALUES (?, ?, ?)";
jdbcTemplate.update(conn -> {
PreparedStatement ps = conn.prepareStatement(sql);
ps.setString(1, group.getId());
ps.setString(2, group.getName());
ps.setObject(3, group.getPath(), Types.OTHER);
return ps;
});
return group;
}
public void deleteGroupById(String groupId) {
String sql = "DELETE FROM gms_group WHERE id = ?";
jdbcTemplate.update(sql, groupId);
}
public List<NewGroup> listSubGroups(String path) {
String sql = "SELECT id, name, path from gms_group WHERE path ~ ? ORDER BY name";
return jdbcTemplate.query(conn -> {
PreparedStatement ps = conn.prepareStatement(sql);
ps.setObject(1, getSubGroupsPath(path), Types.OTHER);
return ps;
}, resultSet -> {
List<NewGroup> groups = new ArrayList<>();
while (resultSet.next()) {
NewGroup group = new NewGroup();
group.setId(resultSet.getString("id"));
group.setName(resultSet.getString("name"));
group.setPath(resultSet.getString("path"));
groups.add(group);
}
return groups;
});
}
private String getSubGroupsPath(String path) {
if (!path.isEmpty()) {
path += ".";
}
path += "*{1}";
return path;
}
public Map<String, Boolean> getHasChildrenMap(Set<String> groupIds) {
String sql = "SELECT g.id, COUNT(s.*) > 0 AS has_children \n"
+ "FROM gms_group g\n"
+ "LEFT JOIN gms_group s ON s.path <@ g.path AND s.path <> g.path\n"
+ "WHERE g.id IN("
+ String.join(",", groupIds.stream().map(g -> "?").collect(Collectors.toList()))
+ ") GROUP BY g.id";
return jdbcTemplate.query(conn -> {
PreparedStatement ps = conn.prepareStatement(sql);
int i = 0;
for (String groupId : groupIds) {
ps.setString(++i, groupId);
}
return ps;
}, resultSet -> {
Map<String, Boolean> map = new HashMap<>();
while (resultSet.next()) {
map.put(resultSet.getString("id"), resultSet.getBoolean("has_children"));
}
return map;
});
}
}