com.webstersmalley.tv.db.TableDumper Maven / Gradle / Ivy
/*
* Copyright 2013 Webster Smalley
*
* 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 com.webstersmalley.tv.db;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import javax.sql.DataSource;
import java.sql.ResultSet;
import java.sql.SQLException;
/**
* Created by: Matthew Smalley
* Date: 15/07/12
*/
@Service("tableDumper")
public class TableDumper {
private static final class TableDumperRowMapper implements RowMapper {
public String mapRow(ResultSet rs, int rowNum) throws SQLException {
StringBuilder sb = new StringBuilder();
if (rowNum == 0) {
for (int i = 1; i <= rs.getMetaData().getColumnCount(); i++) {
sb.append(rs.getMetaData().getColumnName(i)).append("\t");
}
sb.append("\n");
}
for (int i = 1; i <= rs.getMetaData().getColumnCount(); i++) {
sb.append(rs.getString(i)).append("\t");
}
return sb.toString();
}
}
private JdbcTemplate jdbcTemplate;
@Resource(name = "dataSource")
public void setDataSource(DataSource dataSource) {
this.jdbcTemplate = new JdbcTemplate(dataSource);
}
public void dumpTable(String sql) {
for (String line : jdbcTemplate.query(sql, new TableDumperRowMapper())) {
System.out.println(line);
}
}
}