Exemplo n.º 1
0
        public DelayTable GetTable(string strDatabaseName, string strTableName)
        {
            if (this.m_lock.TryEnterWriteLock(this.m_nLockTimeout) == false)
            {
                throw new ApplicationException("为 DelayTableCollection 加写锁时失败。Timeout=" + this.m_nLockTimeout.ToString());
            }
            try
            {
                string     strName = strDatabaseName + "." + strTableName;
                DelayTable table   = (DelayTable)name_table[strName];
                if (table == null)
                {
                    table = new DelayTable();
                    table.DatabaseName  = strDatabaseName;
                    table.TableName     = strTableName;
                    name_table[strName] = table;
                }

                return(table);
            }
            finally
            {
                this.m_lock.ExitWriteLock();
            }
        }
Exemplo n.º 2
0
        public List <DelayTable> GetTables(string strDatabaseName)
        {
            if (this.m_lock.TryEnterReadLock(this.m_nLockTimeout) == false)
            {
                throw new ApplicationException("为 DelayTableCollection 加读锁时失败。Timeout=" + this.m_nLockTimeout.ToString());
            }
            try
            {
                List <DelayTable> results = new List <DelayTable>();
                foreach (string key in this.name_table.Keys)
                {
                    DelayTable table = (DelayTable)name_table[key];
                    if (table.DatabaseName == strDatabaseName)
                    {
                        results.Add(table);
                    }
                }

                return(results);
            }
            finally
            {
                this.m_lock.ExitReadLock();
            }
        }
Exemplo n.º 3
0
 public void Remove(DelayTable table)
 {
     if (this.m_lock.TryEnterWriteLock(this.m_nLockTimeout) == false)
         throw new ApplicationException("为 DelayTableCollection 加写锁时失败。Timeout=" + this.m_nLockTimeout.ToString());
     try
     {
         foreach (string key in this.name_table.Keys)
         {
             DelayTable current = (DelayTable)name_table[key];
             if (current == table)
             {
                 this.name_table.Remove(key);
                 return;
             }
         }
     }
     finally
     {
         this.m_lock.ExitWriteLock();
     }
 }
Exemplo n.º 4
0
 public void Remove(DelayTable table)
 {
     if (this.m_lock.TryEnterWriteLock(this.m_nLockTimeout) == false)
     {
         throw new ApplicationException("为 DelayTableCollection 加写锁时失败。Timeout=" + this.m_nLockTimeout.ToString());
     }
     try
     {
         foreach (string key in this.name_table.Keys)
         {
             DelayTable current = (DelayTable)name_table[key];
             if (current == table)
             {
                 this.name_table.Remove(key);
                 return;
             }
         }
     }
     finally
     {
         this.m_lock.ExitWriteLock();
     }
 }
Exemplo n.º 5
0
 public void Free()
 {
     if (this.m_lock.TryEnterWriteLock(this.m_nLockTimeout) == false)
     {
         throw new ApplicationException("为 DelayTableCollection 加写锁时失败。Timeout=" + this.m_nLockTimeout.ToString());
     }
     try
     {
         foreach (string key in this.name_table.Keys)
         {
             DelayTable table = (DelayTable)this.name_table[key];
             if (table != null)
             {
                 table.Free();
             }
         }
         this.name_table.Clear();
     }
     finally
     {
         this.m_lock.ExitWriteLock();
     }
 }
Exemplo n.º 6
0
        public DelayTable GetTable(string strDatabaseName, string strTableName)
        {
            if (this.m_lock.TryEnterWriteLock(this.m_nLockTimeout) == false)
                throw new ApplicationException("为 DelayTableCollection 加写锁时失败。Timeout=" + this.m_nLockTimeout.ToString());
            try
            {
                string strName = strDatabaseName + "." + strTableName;
                DelayTable table = (DelayTable)name_table[strName];
                if (table == null)
                {
                    table = new DelayTable();
                    table.DatabaseName = strDatabaseName;
                    table.TableName = strTableName;
                    name_table[strName] = table;
                }

                return table;
            }
            finally
            {
                this.m_lock.ExitWriteLock();
            }
        }
Exemplo n.º 7
0
        // return:
        //      -1  出错
        //      0   成功
        public int Write(
            string strDatabaseName,
            KeyCollection keys,
            delegate_getfilename getfilename,
            out string strError)
        {
            strError = "";

            // 确保 keys 里面的事项是排序过的。如果没有排序,本函数也能工作,只是效率略低
            DelayTable    table     = null;
            KeyCollection part_keys = new KeyCollection();

            foreach (KeyItem item in keys)
            {
                if (table == null)
                {
                    table = GetTable(strDatabaseName, item.SqlTableName);
                    if (string.IsNullOrEmpty(table.FileName) == true)
                    {
                        string strFilename = getfilename(strDatabaseName, item.SqlTableName);
                        int    nRet        = table.Create(strFilename, out strError);
                        if (nRet == -1)
                        {
                            return(-1);
                        }
                    }
                }
                else
                {
                    if (table.TableName != item.SqlTableName)
                    {
                        if (part_keys.Count > 0)
                        {
                            table.Write(part_keys);
                            part_keys.Clear();
                        }

                        table = GetTable(strDatabaseName, item.SqlTableName);
                        if (string.IsNullOrEmpty(table.FileName) == true)
                        {
                            string strFilename = getfilename(strDatabaseName, item.SqlTableName);
                            int    nRet        = table.Create(strFilename, out strError);
                            if (nRet == -1)
                            {
                                return(-1);
                            }
                        }
                    }
                }

                part_keys.Add(item);
            }

            if (part_keys.Count > 0)
            {
                Debug.Assert(table != null, "");
                table.Write(part_keys);
                part_keys.Clear();
            }

            return(0);
        }