http://jdbi.org/: jdbi PostgreSQL specific features 
/*
 * 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 org.jdbi.v3.postgres;

import java.sql.ResultSet;
import java.sql.SQLException;

import org.jdbi.v3.core.mapper.ColumnMapper;
import org.jdbi.v3.core.statement.StatementContext;
import org.postgresql.util.PGobject;


Postgres column mapper for @MacAddr String. 
/**
 * Postgres column mapper for {@code @MacAddr String}.
 */
@MacAddr
class MacAddrColumnMapper implements ColumnMapper<String> {
    @Override
    @SuppressWarnings("unchecked")
    public String map(ResultSet r, int columnNumber, StatementContext ctx) throws SQLException {
        PGobject obj = (PGobject) r.getObject(columnNumber);
        return obj.getValue();
    }
}