DbPropertySourceDelegate.java

/*
 * Copyright 2014 MOSPA(Ministry of Security and Public Administration).

 *
 * 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 egovframework.rte.fdl.property.db;

import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.sql.DataSource;

import org.springframework.jdbc.core.JdbcTemplate;

/**
 * DB기반의 PropertySource를 저장하는 클래스
 * @author yjLee
 *
 */
public class DbPropertySourceDelegate {

	public static final String PROPERTY_SOURCE_KEY = "PKEY";
	public static final String PROPERTY_SOURCE_VALUE = "PVALUE";

	private Map<String, Object> properties = new HashMap<String, Object>();

	private JdbcTemplate jdbcTemplate;

	private String sql;

	public DbPropertySourceDelegate(DataSource dataSource, String sql) {
		this.jdbcTemplate = new JdbcTemplate(dataSource);
		this.sql = sql;

		initProperties();
	}

	public void initProperties() {
		List<Map<String, Object>> result = jdbcTemplate.queryForList(sql);
		if (result != null) {
			for (int inx = 0; inx < result.size(); inx++) {
				Map<String, Object> property = result.get(inx);
				if (property != null) {
					Iterator<String> iterator = property.keySet().iterator();
					String pKey = null;
					String pValue = null;

					while (iterator.hasNext()) {
						String key = (String) iterator.next();
						String data = (String) property.get(key);

						if (PROPERTY_SOURCE_KEY.equals(key)) {
							pKey = data;
						} else if (PROPERTY_SOURCE_VALUE.equals(key)) {
							pValue = data;
						}
					}
					properties.put(pKey, pValue);
				}
			}
		}
	}

	public Object getProperty(String key) {
		return this.properties.get((String) key);
	}
}