public TableInfo(string name, string type, string description, DBInfo parent)
{
this.Name = name;
this.Type = type;
this.Description = description;
this.Parent = parent;
}
/// <summary>
/// 获取(并缓存)数据库的“表、视图、存储过程”名称列表。
/// </summary>
public static DBInfo GetSchema(string conn)
{
ConnBean cb = ConnBean.Create(conn);
if (cb != null)
{
int hash = cb.GetHashCode();
if (!_DBScheams.ContainsKey(hash))
{
lock (o)
{
if (!_DBScheams.ContainsKey(hash))
{
DBInfo dbSchema = GetSchemaDic(cb.ConnName);
if (dbSchema != null && (dbSchema.Tables.Count > 0 || dbSchema.Views.Count > 0 || dbSchema.Procs.Count > 0))
{
_DBScheams.Add(hash, dbSchema);
}
return(dbSchema);
}
}
}
if (_DBScheams.ContainsKey(hash))
{
return(_DBScheams[hash]);
}
}
return(null);
}
private static DBInfo GetSchemaDic(string conn)
{
DBInfo info = new DBInfo();
using (DalBase dal = DalCreate.CreateDal(conn))
{
info.ConnName = dal.ConnObj.Master.ConnName;
info.ConnString = dal.ConnObj.Master.ConnString;
info.DataBaseName = dal.DataBaseName;
info.DataBaseType = dal.DataBaseType;
info.DataBaseVersion = dal.Version;
Dictionary <string, string> tables = dal.GetTables();
if (tables != null && tables.Count > 0)
{
Dictionary <int, TableInfo> dic = new Dictionary <int, TableInfo>();
foreach (KeyValuePair <string, string> item in tables)
{
int hash = TableInfo.GetHashCode(item.Key);
if (!dic.ContainsKey(hash))
{
dic.Add(hash, new TableInfo(item.Key, "U", item.Value, info));
}
}
info.Tables = dic;
}
Dictionary <string, string> views = dal.GetViews();
if (views != null && views.Count > 0)
{
Dictionary <int, TableInfo> dic = new Dictionary <int, TableInfo>();
foreach (KeyValuePair <string, string> item in views)
{
int hash = TableInfo.GetHashCode(item.Key);
if (!dic.ContainsKey(hash))
{
dic.Add(hash, new TableInfo(item.Key, "V", item.Value, info));
}
}
info.Views = dic;
}
Dictionary <string, string> procs = dal.GetProcs();
if (procs != null && procs.Count > 0)
{
Dictionary <int, TableInfo> dic = new Dictionary <int, TableInfo>();
foreach (KeyValuePair <string, string> item in procs)
{
int hash = TableInfo.GetHashCode(item.Key);
if (!dic.ContainsKey(hash))
{
dic.Add(hash, new TableInfo(item.Key, "P", item.Value, info));
}
}
info.Procs = dic;
}
}
return(info);
}
/// <summary>
/// 是否存在指定的表名、视图名、存储过程名
/// </summary>
/// <param name="newName"></param>
/// <param name="conn"></param>
/// <returns></returns>
public static bool Exists(string name, string type, string conn)
{
string newName = name;
string newConn = GetConn(newName, out newName, conn);
if (string.IsNullOrEmpty(conn) || (name.Contains("..") && newConn.StartsWith(name.Split('.')[0])))//已指定链接，则不切换链接
{
conn = newConn;
}
//if (DBSchema.DBScheams.Count == 0 && !string.IsNullOrEmpty(conn))
//{
// DBSchema.GetSchema(conn);
//}
if (!string.IsNullOrEmpty(newName))// && DBSchema.DBScheams.Count > 0
{
string tableHash = TableInfo.GetHashKey(newName);
if (!string.IsNullOrEmpty(conn))
{
string dbHash = ConnBean.GetHashKey(conn);
if (DBSchema.DBScheams.ContainsKey(dbHash))
{
TableInfo info = DBSchema.DBScheams[dbHash].GetTableInfo(tableHash, type);
if (info != null)
{
return(true);
}
}
else
{
DBInfo dbInfo = DBSchema.GetSchema(conn, false);
if (dbInfo != null)
{
TableInfo info = dbInfo.GetTableInfo(tableHash, type);
if (info != null)
{
return(true);
}
}
}
}
else
{
foreach (KeyValuePair <string, DBInfo> item in DBSchema.DBScheams)
{
TableInfo info = item.Value.GetTableInfo(tableHash, type);
if (info != null)
{
return(true);
}
}
}
}
return(false);
}
/// <summary>
/// 获得数据库表相关信息
/// </summary>
/// <param name="conn">指定时优先寻找。</param>
/// <param name="name">表名</param>
/// <returns></returns>
public static TableInfo GetTableInfoByName(string name, string conn)
{
if (!string.IsNullOrEmpty(name))
{
name = SqlFormat.NotKeyword(name);
string tableHash = TableInfo.GetHashKey(name);
if (!string.IsNullOrEmpty(conn))
{
string dbHash = ConnBean.GetHashKey(conn);
if (DBSchema.DBScheams.Count > 0 && DBSchema.DBScheams.ContainsKey(dbHash))
{
TableInfo info = DBSchema.DBScheams[dbHash].GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
else
{
DBInfo dbInfo = DBSchema.GetSchema(conn, false);
if (dbInfo != null)
{
TableInfo info = dbInfo.GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
}
}
else
{
DBInfo dbInfo = DBSchema.GetSchema(AppConfig.DB.DefaultConn, false);//优先取默认链接
if (dbInfo != null)
{
TableInfo info = dbInfo.GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
}
foreach (KeyValuePair <string, DBInfo> item in DBSchema.DBScheams)
{
TableInfo info = item.Value.GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
}
return(null);
}
/// <summary>
/// 是否存在指定的表名、视图名、存储过程名
/// </summary>
/// <param name="name"></param>
/// <param name="conn"></param>
/// <returns></returns>
public static bool Exists(string name, string type, string conn)
{
conn = GetConn(name, out name, conn);
if (DBSchema.DBScheams.Count == 0 && !string.IsNullOrEmpty(conn))
{
DBSchema.GetSchema(conn);
}
if (!string.IsNullOrEmpty(name) && DBSchema.DBScheams.Count > 0)
{
int tableHash = TableInfo.GetHashCode(name);
if (!string.IsNullOrEmpty(conn))
{
int dbHash = ConnBean.GetHashCode(conn);
if (DBSchema.DBScheams.ContainsKey(dbHash))
{
TableInfo info = DBSchema.DBScheams[dbHash].GetTableInfo(tableHash, type);
if (info != null)
{
return(true);
}
}
else
{
DBInfo dbInfo = DBSchema.GetSchema(conn);
if (dbInfo != null)
{
TableInfo info = dbInfo.GetTableInfo(tableHash, type);
if (info != null)
{
return(true);
}
}
}
}
else
{
foreach (KeyValuePair <int, DBInfo> item in DBSchema.DBScheams)
{
TableInfo info = item.Value.GetTableInfo(tableHash, type);
if (info != null)
{
return(true);
}
}
}
}
return(false);
}
/// <summary>
/// 获取(并缓存)数据库的“表、视图、存储过程”名称列表。
/// </summary>
public static DBInfo GetSchema(string conn, bool isOuterLocking)
{
ConnBean cb = ConnBean.Create(conn);
if (cb != null)
{
string hash = cb.GetHashKey();
if (!_DBScheams.ContainsKey(hash))
{
if (!isOuterLocking && _DBScheamsTemp.ContainsKey(hash))
{
return(_DBScheamsTemp[hash]);
}
lock (o)
{
if (!_DBScheams.ContainsKey(hash))
{
DBInfo dbSchema = GetSchemaDic(cb.ConnName);
if (dbSchema != null && (dbSchema.Tables.Count > 0 || dbSchema.Views.Count > 0 || dbSchema.Procs.Count > 0))
{
if (isOuterLocking)//外部有lock，外部不会产生foreach代码时。
{
if (!_DBScheams.ContainsKey(hash))
{
_DBScheams.Add(hash, dbSchema);
}
}
else
{
if (!_DBScheamsTemp.ContainsKey(hash))
{
_DBScheamsTemp.Add(hash, dbSchema);
}
}
}
return(dbSchema);
}
}
}
if (_DBScheams.ContainsKey(hash))
{
return(_DBScheams[hash]);
}
}
return(null);
}
private static DBInfo GetSchemaDic(string conn)
{
DalBase dal = DalCreate.CreateDal(conn);
DBInfo info = new DBInfo();
info.ConnName = dal.ConnObj.Master.ConnName;
info.ConnString = dal.ConnObj.Master.ConnString;
info.DataBaseName = dal.DataBase;
Dictionary <string, string> tables = TableSchema.GetTables(conn);
if (tables != null && tables.Count > 0)
{
Dictionary <int, TableInfo> dic = new Dictionary <int, TableInfo>();
foreach (KeyValuePair <string, string> item in tables)
{
dic.Add(TableSchema.GetTableHash(item.Key), new TableInfo(item.Key, "U", item.Value, info));
}
info.Tables = dic;
}
Dictionary <string, string> views = TableSchema.GetViews(conn);
if (views != null && views.Count > 0)
{
Dictionary <int, TableInfo> dic = new Dictionary <int, TableInfo>();
foreach (KeyValuePair <string, string> item in views)
{
dic.Add(TableSchema.GetTableHash(item.Key), new TableInfo(item.Key, "V", item.Value, info));
}
info.Views = dic;
}
Dictionary <string, string> procs = TableSchema.GetProcs(conn);
if (procs != null && procs.Count > 0)
{
Dictionary <int, TableInfo> dic = new Dictionary <int, TableInfo>();
foreach (KeyValuePair <string, string> item in procs)
{
dic.Add(TableSchema.GetTableHash(item.Key), new TableInfo(item.Key, "P", item.Value, info));
}
info.Procs = dic;
}
return(info);
}
/// <summary>
/// 获得数据库表相关信息
/// </summary>
/// <param name="conn">指定时优先寻找。</param>
/// <param name="name">表名</param>
/// <returns></returns>
public static TableInfo GetTableInfoByName(string name, string conn)
{
if (!string.IsNullOrEmpty(name))
{
name = SqlFormat.NotKeyword(name);
int tableHash = TableInfo.GetHashCode(name);
if (!string.IsNullOrEmpty(conn))
{
int dbHash = ConnBean.GetHashCode(conn);
if (DBSchema.DBScheams.Count > 0 && DBSchema.DBScheams.ContainsKey(dbHash))
{
TableInfo info = DBSchema.DBScheams[dbHash].GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
else
{
DBInfo dbInfo = DBSchema.GetSchema(conn);
if (dbInfo != null)
{
TableInfo info = dbInfo.GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
}
}
foreach (KeyValuePair <int, DBInfo> item in DBSchema.DBScheams)
{
TableInfo info = item.Value.GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
}
return(null);
}
/// <summary>
/// 获取数据库的“表、视图、存储过程”名称列表。
/// </summary>
public static DBInfo GetSchema(string conn)
{
ConnBean cb = ConnBean.Create(conn);
int hash = cb.GetHashCode();
if (!_DBScheams.ContainsKey(hash))
{
lock (o)
{
if (!_DBScheams.ContainsKey(hash))
{
DBInfo dbSchema = GetSchemaDic(cb.ConnString);
if (dbSchema != null)
{
_DBScheams.Add(hash, dbSchema);
}
return(dbSchema);
}
}
}
return(null);
}
