public static void GetDataSource(CompositeTag dataSourceTag)
{
foreach (CompositeTag childConfig in dataSourceTag.SubTags)
{
DataSourceConfig dsConfig = new DataSourceConfig();
String id = childConfig.TryGetAttributeValueAt("id");
dsConfig.dataSourceName = id;
dsConfig.url = GetTagValue(childConfig, "connectionString");
dsConfig.dialectClass = GetTagValue(childConfig, "dialectClass");
dsConfig.providerName = GetTagValue(childConfig, "providerName");
String tempValue = null;
tempValue = GetTagValue(childConfig, "minSize");
if (tempValue != null)
{
dsConfig.minSize = Convert.ToInt32(tempValue);
}
tempValue = GetTagValue(childConfig, "maxSize");
if (tempValue != null)
{
dsConfig.maxSize = Convert.ToInt32(tempValue);
}
tempValue = GetTagValue(childConfig, "timeOut");
if (tempValue != null)
{
dsConfig.timeOut = Convert.ToInt32(tempValue);
}
tempValue = GetTagValue(childConfig, "usePool");
if (tempValue != null)
{
dsConfig.pooled = Convert.ToBoolean(tempValue);
}
if (DataSourceList.ContainsKey(id))
{
DataSourceList[id] = dsConfig;
}
else
{
DataSourceList.Add(id, dsConfig);
}
}
}
/// <summary>
/// Create DBHelper
/// </summary>
/// <param name="dsName"></param>
/// <param name="dsConfig"></param>
static void CreateDBHelper(string dsName, DataSourceConfig dsConfig)
{
if (string.IsNullOrEmpty(dsConfig.dialectClass))
{
throw new ArgumentNullException("配置文件错误：请检查[dsConfig]配置");
}
try
{
string[] classNameArray = dsConfig.dialectClass.Split(new char[] { ':', '-' });
string className = classNameArray[1];
string assemblyName = classNameArray[0];
Type type = null;
type = Assembly.Load(assemblyName).GetType(className, true);
IDBHelper instance = Activator.CreateInstance(type, dsConfig.Parameters) as IDBHelper;
DBHelperCache.Add(dsName, instance);
}
catch (ArgumentNullException)
{
throw new Exception("DBHelper添加失败：数据源名[dsName]不能为空");
}
catch (ArgumentException)
{
throw new Exception("DBHelper添加失败：已存在同名的数据源");
}
}
/// <summary>
/// Init DataSource List;
/// Init DBHelper Cache
/// </summary>
/// <param name="xnl"></param>
/// <returns></returns>
private static Dictionary<string, DataSourceConfig> InitDS(XmlNodeList xnl)
{
System.Collections.Generic.Dictionary<string, DataSourceConfig> dsTable = new Dictionary<string, DataSourceConfig>();
try
{
foreach (XmlNode xl in xnl)
{
DataSourceConfig dsConfig = new DataSourceConfig();
string dsName = xl.Attributes["name"].Value;
string dialect = xl.Attributes["dialect"].Value;
dsConfig.dataSourceName = dsName;
dsConfig.dialectClass = dialect;
XmlNodeList parmNodeList = xl.SelectNodes("parm");
int i = 0;
object[] parmList = new object[parmNodeList.Count];
foreach (XmlNode parmNode in parmNodeList)
{
//参数个数要与构造函数对应 否则要进行转换
string id = parmNode.Attributes["id"].Value;
string value = parmNode.Attributes["value"].Value;
parmList[i] = value;
i++;
}
dsConfig.Parameters = parmList;
dsTable.Add(dsName, dsConfig);
//添加到DBHelperCache
string[] classNameArray = dsConfig.dialectClass.Split(new char[] { ':', '-' });
string className = classNameArray[1];
string assemblyName = classNameArray[0];
Type type = null;
if (string.IsNullOrEmpty(dsConfig.dialectClass))
{
throw new ArgumentNullException("配置文件错误：请检查Dialect配置");
}
try
{
type = Assembly.Load(assemblyName).GetType(className, true);
IDBHelper instance = Activator.CreateInstance(type, dsConfig.Parameters) as IDBHelper;
DBHelperCache.Add(dsName, instance);
}
catch (Exception)
{
//如果Assembly.Load失败，不做处理
}
}
}
catch (Exception ex)
{
throw new DBConfigException(ex);
}
return dsTable;
}
private void button1_Click(object sender, EventArgs e)
{
XmlDocument xmlDoc = new XmlDocument();
try
{
xmlDoc.Load(AppDomain.CurrentDomain.BaseDirectory + "DBHelper.config");
}
catch
{
throw new DBFileNotFoundException();
}
System.Collections.Generic.Dictionary<string, DataSourceConfig> dsTable = new Dictionary<string, DataSourceConfig>();
XmlNodeList xnl = xmlDoc.DocumentElement.SelectNodes("DataSource");
try
{
foreach (XmlNode xl in xnl)
{
DataSourceConfig dsConfig = new DataSourceConfig();
string dsName = xl.Attributes["name"].Value;
string dialect = xl.Attributes["dialect"].Value;
dsConfig.dataSourceName = dsName;
dsConfig.dialectClass = dialect;
XmlNodeList parmNodeList = xl.SelectNodes("parm");
int i = 0;
object[] parmList = new object[parmNodeList.Count];
foreach (XmlNode parmNode in parmNodeList)
{
//参数个数要与构造函数对应 否则要进行转换
string id = parmNode.Attributes["id"].Value;
string value = parmNode.Attributes["value"].Value;
parmList[i] = value;
i++;
}
dsConfig.Parameters = parmList;
dsTable.Add(dsName, dsConfig);
}
}
catch (Exception ex)
{
throw new DBConfigException(ex);
}
}
