internal SqlSection(string sql, DbProvider dbProvider, DbTrans dbTran)
{
this.dbProvider = dbProvider;
this.dbTran = dbTran;
this.dbCommand = dbProvider.CreateSqlCommand(sql);
}
internal DbBatch(DbProvider dbProvider, DbTrans dbTran)
{
this.dbProvider = dbProvider;
this.dbTrans = dbTran;
this.useBatch = false;
}
internal ProcSection(string procName, DbProvider dbProvider, DbTrans dbTran)
{
this.dbProvider = dbProvider;
this.dbTran = dbTran;
this.dbCommand = dbProvider.CreateProcCommand(procName);
}
/// <summary>
/// Creates the db provider.
/// </summary>
/// <param name="assemblyName">Name of the assembly.</param>
/// <param name="className">Name of the class.</param>
/// <param name="connectionString">The conn STR.</param>
/// <returns>The db provider.</returns>
public static DbProvider CreateDbProvider(string assemblyName, string className, string connectionString)
{
//Check.Require(!string.IsNullOrEmpty(className), "className could not be null.");
if (connectionString.ToLower().Contains("microsoft.jet.oledb") || connectionString.ToLower().Contains(".db3"))
{
if (connectionString.ToLower().IndexOf("data source") < 0)
{
throw new MySoftException("ConnectionString的格式有错误，请查证！");
}
string mdbPath = connectionString.Substring(connectionString.ToLower().IndexOf("data source") + "data source".Length + 1).TrimStart(' ', '=');
if (mdbPath.ToLower().StartsWith("|datadirectory|"))
{
mdbPath = AppDomain.CurrentDomain.BaseDirectory.TrimEnd('\\') + "\\App_Data" + mdbPath.Substring("|datadirectory|".Length);
}
else if (connectionString.StartsWith("./") || connectionString.EndsWith(".\\"))
{
connectionString = connectionString.Replace("/", "\\").Replace(".\\", AppDomain.CurrentDomain.BaseDirectory.TrimEnd('\\') + "\\");
}
connectionString = connectionString.Substring(0, connectionString.ToLower().IndexOf("data source")) + "Data Source=" + mdbPath;
}
//如果是~则表示当前目录
if (connectionString.Contains("~/") || connectionString.Contains("~\\"))
{
connectionString = connectionString.Replace("/", "\\").Replace("~\\", AppDomain.CurrentDomain.BaseDirectory.TrimEnd('\\') + "\\");
}
//by default, using sqlserver db provider
if (string.IsNullOrEmpty(className))
{
className = typeof(SqlServer.SqlServerProvider).ToString();
}
else if (className.ToLower().IndexOf("System.Data.SqlClient".ToLower()) >= 0 || className.ToLower().Trim() == "sql" || className.ToLower().Trim() == "sqlserver")
{
className = typeof(SqlServer.SqlServerProvider).ToString();
}
else if (className.ToLower().Trim() == "sql9" || className.ToLower().Trim() == "sqlserver9" || className.ToLower().Trim() == "sqlserver2005" || className.ToLower().Trim() == "sql2005")
{
className = typeof(SqlServer9.SqlServer9Provider).ToString();
}
System.Reflection.Assembly ass;
if (string.IsNullOrEmpty(assemblyName))
{
ass = typeof(DbProvider).Assembly;
}
else
{
ass = System.Reflection.Assembly.Load(assemblyName);
}
string cacheKey = string.Format("{0}_{1}_{2}", assemblyName, className, connectionString);
if (providerCache.ContainsKey(cacheKey))
{
return(providerCache[cacheKey]);
}
else
{
DbProvider retProvider = ass.CreateInstance(className, false, System.Reflection.BindingFlags.Default, null, new object[] { connectionString }, null, null) as DbProvider;
if (retProvider != null)
{
providerCache[cacheKey] = retProvider;
}
return(retProvider);
}
}
/// <summary>
/// 设置指定驱动Session会话为默认会话
/// </summary>
/// <param name="dbProvider"></param>
public static void SetDefault(DbProvider dbProvider)
{
Default = new DbSession(dbProvider);
}
internal TopSection(string topString, FromSection <T> fromSection, DbProvider dbProvider, DbTrans dbTran, Field pagingField, int topSize)
: base(fromSection, dbProvider, dbTran, pagingField)
{
this.topString = topString;
this.topSize = topSize;
}
private void InitSession(DbProvider dbProvider)
{
this.dbProvider = dbProvider;
this.dbTrans = new DbTrans(dbProvider, false);
}
/// <summary>
/// 设置新的驱动
/// </summary>
/// <param name="dbProvider"></param>
public void SetProvider(DbProvider dbProvider)
{
InitSession(dbProvider);
}
internal QuerySection(FromSection <T> fromSection, DbProvider dbProvider, DbTrans dbTran)
{
this.fromSection = fromSection;
this.dbProvider = dbProvider;
this.dbTran = dbTran;
}
internal void SetDbProvider(DbProvider dbProvider, DbTrans dbTran)
{
this.dbProvider = dbProvider;
this.dbTran = dbTran;
}
internal TopQuery(QuerySection <T> query, DbProvider dbProvider, DbTrans dbTran, int topSize)
: base(query.FromSection, dbProvider, dbTran)
{
this.query = query;
this.topSize = topSize;
}
internal FromSection(DbProvider dbProvider, DbTrans dbTran, Table table, string aliasName)
{
InitForm(table, aliasName);
this.query = new QuerySection <T>(this, dbProvider, dbTran);
}
private void InitSession(DbProvider dbProvider)
{
this.dbProvider = dbProvider;
this.dbProvider.SetEventHandler(Decrypt);
this.dbProvider.DataCache = new DataCache();
this.dbTrans = new DbTrans(dbProvider, false);
#region 加载缓存配置
try
{
object cacheConfig = ConfigurationManager.GetSection("cacheConfig");
if (cacheConfig != null)
{
CacheConfigurationSection config = (CacheConfigurationSection)cacheConfig;
IDictionary <string, CacheConfigInfo> configMap = new Dictionary <string, CacheConfigInfo>();
//获取缓存配制
foreach (string key in config.CacheEntities.AllKeys)
{
if (key.Contains("."))
{
string[] splittedKey = key.Split('.');
if (splittedKey[0] == this.dbProvider.ConnectName)
{
int expireSeconds = CacheConfigurationSection.DEFAULT_EXPIRE_SECONDS;
try
{
expireSeconds = int.Parse(config.CacheEntities[key].Value);
}
catch { }
string entityName = splittedKey[1].Trim();
CacheConfigInfo cacheInfo = new CacheConfigInfo();
cacheInfo.EntityName = entityName;
cacheInfo.ExpireSeconds = expireSeconds;
configMap.Add(entityName, cacheInfo);
}
}
}
//检测缓存依赖关系
foreach (string key in config.CacheRelations.AllKeys)
{
if (key.Contains("."))
{
string[] splittedKey = key.Split('.');
if (splittedKey[0] == this.dbProvider.ConnectName)
{
string cacheKey = config.CacheRelations[key].Value;
string entityName = splittedKey[1].ToLower().Trim();
string[] relationKeys = cacheKey.Split(',');
if (configMap.ContainsKey(entityName))
{
CacheConfigInfo cache = configMap[entityName];
foreach (string relationKey in relationKeys)
{
if (!cache.RelationList.Contains(relationKey))
{
cache.RelationList.Add(relationKey);
}
}
configMap[entityName] = cache;
}
}
}
}
this.dbProvider.CacheConfigSection = config;
this.dbProvider.CacheConfigMap = configMap;
}
}
catch
{
throw new MySoftException("CacheConfig配置加载失败！");
}
#endregion
}
