/**
* Copyright (c) 2005-2012 springside.org.cn
*
* Licensed under the Apache License, Version 2.0 (the "License");
*/
package com.github.dactiv.common.unit;
import java.io.IOException;
import java.io.InputStream;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import javax.sql.DataSource;
import org.dbunit.DatabaseUnitException;
import org.dbunit.database.IDatabaseConnection;
import org.dbunit.dataset.IDataSet;
import org.dbunit.dataset.xml.FlatXmlDataSetBuilder;
import org.dbunit.ext.h2.H2Connection;
import org.dbunit.operation.DatabaseOperation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.ResourceLoader;
import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
/**
* 基于DBUnit初始化测试数据到H2数据库的工具类.
*
* @author calvin
*/
public abstract class Fixtures {
private static Logger logger = LoggerFactory.getLogger(Fixtures.class);
private static ResourceLoader resourceLoader = new DefaultResourceLoader();
/**
* 插入XML文件中的数据到H2数据库.
*
* @param xmlFilePaths 符合Spring Resource路径格式的文件路径列表.
*/
public static void loadData(DataSource h2DataSource, String... xmlFilePaths) throws Exception {
execute(DatabaseOperation.INSERT, h2DataSource, xmlFilePaths);
}
/**
* 先删除XML数据文件中涉及的表的数据, 再插入XML文件中的数据到H2数据库.
*
* 在更新全部表时速度没有reloadAllTable快且容易产生锁死, 适合只更新小部分表的数据的情况.
*
* @param xmlFilePaths 符合Spring Resource路径格式的文件路径列表.
*/
public static void reloadData(DataSource h2DataSource, String... xmlFilePaths) throws Exception {
execute(DatabaseOperation.CLEAN_INSERT, h2DataSource, xmlFilePaths);
}
/**
* 先删除数据库中所有表的数据, 再插入XML文件中的数据到H2数据库.
*
* @param xmlFilePaths 符合Spring Resource路径格式的文件路径列表.
*/
public static void reloadAllTable(DataSource h2DataSource, String... xmlFilePaths) throws Exception {
deleteAllTable(h2DataSource);
loadData(h2DataSource, xmlFilePaths);
}
/**
* 在H2数据库中删除XML文件中涉及的表的数据.
*
* @param xmlFilePaths 符合Spring Resource路径格式的文件路径列表.
*/
public static void deleteData(DataSource h2DataSource, String... xmlFilePaths) throws Exception {
execute(DatabaseOperation.DELETE_ALL, h2DataSource, xmlFilePaths);
}
/**
* 对XML文件中的数据在H2数据库中执行Operation.
*
* @param xmlFilePaths 符合Spring Resource路径格式的文件列表.
*/
private static void execute(DatabaseOperation operation, DataSource dataSource, String... xmlFilePaths)
throws DatabaseUnitException, SQLException {
//注意这里HardCode了使用H2的Connetion
IDatabaseConnection connection = new H2Connection(dataSource.getConnection(), null);
for (String xmlPath : xmlFilePaths) {
try {
InputStream input = resourceLoader.getResource(xmlPath).getInputStream();
IDataSet dataSet = new FlatXmlDataSetBuilder().setColumnSensing(true).build(input);
operation.execute(connection, dataSet);
} catch (IOException e) {
logger.warn(xmlPath + " file not found", e);
}finally{
connection.close();
}
}
}
/**
* 删除所有的表,excludeTables除外.在删除期间disable外键检查.
* @throws SQLException
*/
public static void deleteAllTable(DataSource h2DataSource, String... excludeTables) throws SQLException {
List<String> tableNames = new ArrayList<String>();
try {
ResultSet rs = h2DataSource.getConnection().getMetaData()
.getTables(null, null, null, new String[] { "TABLE" });
while (rs.next()) {
String tableName = rs.getString("TABLE_NAME");
if (Arrays.binarySearch(excludeTables, tableName) < 0) {
tableNames.add(tableName);
}
}
deleteTable(h2DataSource, tableNames.toArray(new String[tableNames.size()]));
} catch (SQLException e) {
throw e;
}
}
/**
* 删除指定的表, 在删除期间disable外键的检查.
*/
public static void deleteTable(DataSource h2DataSource, String... tableNames) {
NamedParameterJdbcTemplate template = new NamedParameterJdbcTemplate(h2DataSource);
template.update("SET REFERENTIAL_INTEGRITY FALSE",new HashMap<String, Object>());
for (String tableName : tableNames) {
template.update("DELETE FROM " + tableName,new HashMap<String, Object>());
}
template.update("SET REFERENTIAL_INTEGRITY TRUE",new HashMap<String, Object>());
}
}