using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using FireBirdUtil.SqlHelpers;

namespace WeighBusiness.BO.CreateTables
{
	public abstract class CreateTable
	{
		string _SqlAfterCreateTable;
		public string SqlAfterCreateTable { private get { return _SqlAfterCreateTable; } set { _SqlAfterCreateTable = value; } }
		CreateTableHelper _CTH;
		public CreateTable(string database, string tableName)
		{
#if DEBUG
			if (string.IsNullOrEmpty(database) || string.IsNullOrEmpty(tableName))
				throw new ArgumentException("构造函数的参数不能为空");
#endif
			_CTH = new CreateTableHelper(database, tableName);
			AddFields(_CTH);
		}

		public abstract void AddFields(CreateTableHelper cth);

		public bool Create()
		{
			string errorMessage;
			return Create(out errorMessage);
		}

		public bool Create(out string errorMessage)
		{
			errorMessage = string.Empty;
			try {
				_CTH.CreateTableIfNotExist(_SqlAfterCreateTable);
				return true;
			} catch (Exception ex) {
				errorMessage = ex.ToString();
				return false;
			}
		}
	}
}