public void SetTables(params IDataTable[] tables)
{
var set = new NegativeSetting();
set.CheckOnly = DAL.NegativeCheckOnly;
set.NoDelete = DAL.NegativeNoDelete;
OnSetTables(tables, set);
}
private void CheckAllTables(IDataTable[] tables, NegativeSetting setting)
{
// 数据库表进入字典
var dic = new Dictionary <String, IDataTable>(StringComparer.OrdinalIgnoreCase);
var dbtables = OnGetTables(new HashSet <String>(tables.Select(t => t.TableName), StringComparer.OrdinalIgnoreCase));
if (dbtables != null && dbtables.Count > 0)
{
foreach (var item in dbtables)
{
dic.Add(item.TableName, item);
}
}
foreach (var item in tables)
{
try
{
// 判断指定表是否存在于数据库中，以决定是创建表还是修改表
IDataTable dbtable = null;
if (dic.TryGetValue(item.TableName, out dbtable))
{
CheckTable(item, dbtable, setting);
}
else
{
CheckTable(item, null, setting);
}
}
catch (Exception ex)
{
WriteLog(ex.ToString());
}
}
}
public void SetTables(params IDataTable[] tables)
{
var set = new NegativeSetting();
set.CheckOnly = DAL.NegativeCheckOnly;
set.NoDelete = DAL.NegativeNoDelete;
OnSetTables(tables, set);
}
protected override string CheckColumnsChange(IDataTable entitytable, IDataTable dbtable, NegativeSetting setting)
{
foreach (var item in entitytable.Columns)
{
// 自增字段必须是主键
if (item.Identity && !item.PrimaryKey)
{
// 取消所有主键
item.Table.Columns.ForEach(dc => dc.PrimaryKey = false);
// 自增字段作为主键
item.PrimaryKey = true;
break;
}
}
//String sql = base.CheckColumnsChange(entitytable, dbtable, onlySql);
// 把onlySql设为true，让基类只产生语句而不执行
var set = new NegativeSetting();
set.CheckOnly = true;
set.NoDelete = setting.NoDelete;
var sql = base.CheckColumnsChange(entitytable, dbtable, set);
if (String.IsNullOrEmpty(sql))
{
return(sql);
}
sql = ReBuildTable(entitytable, dbtable);
if (String.IsNullOrEmpty(sql) || setting.CheckOnly)
{
return(sql);
}
Boolean flag = true;
// 如果设定不允许删
if (setting.NoDelete)
{
// 看看有没有数据库里面有而实体库里没有的
foreach (var item in dbtable.Columns)
{
var dc = entitytable.GetColumn(item.Name);
if (dc == null)
{
flag = false;
break;
}
}
}
if (flag)
{
Database.CreateSession().Execute(sql);
}
return(sql);
}
/// <summary>在当前连接上检查指定数据表的架构</summary>
/// <param name="set"></param>
/// <param name="tables"></param>
public void SetTables(NegativeSetting set, params IDataTable[] tables)
{
if (set == null)
{
set = new NegativeSetting();
set.CheckOnly = Setting.Current.Negative.CheckOnly;
set.NoDelete = Setting.Current.Negative.NoDelete;
}
Db.CreateMetaData().SetTables(set, tables);
}
/// <summary>在当前连接上检查指定数据表的架构</summary>
/// <param name="tables"></param>
public void SetTables(params IDataTable[] tables)
{
var set = new NegativeSetting();
set.CheckOnly = DAL.NegativeCheckOnly;
set.NoDelete = DAL.NegativeNoDelete;
//if (set.CheckOnly && DAL.Debug) WriteLog("XCode.Negative.CheckOnly设置为True，只是检查不对数据库进行操作");
//if (set.NoDelete && DAL.Debug) WriteLog("XCode.Negative.NoDelete设置为True，不会删除数据表多余字段");
Db.CreateMetaData().SetTables(set, tables);
}
/// <summary>在当前连接上检查指定数据表的架构</summary>
/// <param name="set"></param>
/// <param name="tables"></param>
public void SetTables(NegativeSetting set, params IDataTable[] tables)
{
if (set == null)
{
set = new NegativeSetting();
set.CheckOnly = Setting.Current.Negative.CheckOnly;
set.NoDelete = Setting.Current.Negative.NoDelete;
}
//if (set.CheckOnly && DAL.Debug) WriteLog("XCode.Negative.CheckOnly设置为True，只是检查不对数据库进行操作");
//if (set.NoDelete && DAL.Debug) WriteLog("XCode.Negative.NoDelete设置为True，不会删除数据表多余字段");
Db.CreateMetaData().SetTables(set, tables);
}
private void CheckDatabase(NegativeSetting setting)
{
if (hasCheckedDatabase)
{
return;
}
hasCheckedDatabase = true;
//数据库检查
Boolean dbExist = true;
try
{
dbExist = (Boolean)SetSchema(DDLSchema.DatabaseExist, null);
}
catch
{
// 如果异常，默认认为数据库存在
dbExist = true;
}
if (!dbExist)
{
if (!setting.CheckOnly)
{
WriteLog("创建数据库：{0}", ConnName);
SetSchema(DDLSchema.CreateDatabase, null, null);
}
else
{
var sql = GetSchemaSQL(DDLSchema.CreateDatabase, null, null);
if (String.IsNullOrEmpty(sql))
{
WriteLog("请为连接{0}创建数据库！", ConnName);
}
else
{
WriteLog("请为连接{0}创建数据库，使用以下语句：{1}", ConnName, Environment.NewLine + sql);
}
}
}
}
///// <summary>设置表模型，检查数据表是否匹配表模型，反向工程</summary>
///// <param name="tables"></param>
//[EditorBrowsable(EditorBrowsableState.Never)]
//[Obsolete("请改用多参数版本！")]
//public void SetTables(params IDataTable[] tables)
//{
// //var set = new NegativeSetting();
// //set.CheckOnly = DAL.NegativeCheckOnly;
// //set.NoDelete = DAL.NegativeNoDelete;
// var set = Setting.Current.Negative;
// OnSetTables(tables, set);
//}
/// <summary>设置表模型，检查数据表是否匹配表模型，反向工程</summary>
/// <param name="setting">设置</param>
/// <param name="tables"></param>
public void SetTables(NegativeSetting setting, params IDataTable[] tables)
{
OnSetTables(tables, setting);
}
/// <summary>检查字段改变。某些数据库（如SQLite）没有添删改字段的DDL语法，可重载该方法，使用重建表方法ReBuildTable</summary>
/// <param name="entitytable"></param>
/// <param name="dbtable"></param>
/// <param name="setting"></param>
/// <returns></returns>
protected virtual String CheckColumnsChange(IDataTable entitytable, IDataTable dbtable, NegativeSetting setting)
{
#region 准备工作
var onlySql = setting.CheckOnly;
var sql = String.Empty;
var sb = new StringBuilder();
var entitydic = new Dictionary <String, IDataColumn>(StringComparer.OrdinalIgnoreCase);
if (entitytable.Columns != null)
{
foreach (var item in entitytable.Columns)
{
if (entitydic.ContainsKey(item.ColumnName.ToLower()))
{
WriteLog("《" + entitytable.Name + "》实体中存在重复列名，请检查《" + entitytable.TableName + "》表《" + item.Name + "》属性的ColumnName配置（目前配置为：" + item.ColumnName + "）。");
continue;
}
entitydic.Add(item.ColumnName.ToLower(), item);
}
}
var dbdic = new Dictionary <String, IDataColumn>(StringComparer.OrdinalIgnoreCase);
if (dbtable.Columns != null)
{
foreach (var item in dbtable.Columns)
{
dbdic.Add(item.ColumnName.ToLower(), item);
}
}
#endregion
#region 新增列
foreach (IDataColumn item in entitytable.Columns)
{
if (!dbdic.ContainsKey(item.ColumnName.ToLower()))
{
//AddColumn(sb, item, onlySql);
PerformSchema(sb, onlySql, DDLSchema.AddColumn, item);
if (!String.IsNullOrEmpty(item.Description))
{
PerformSchema(sb, onlySql, DDLSchema.AddColumnDescription, item);
}
//! 以下已经不需要了，目前只有SQLite会采用重建表的方式添加删除字段。如果这里提前添加了字段，重建表的时候，会导致失败。
//// 这里必须给dbtable加加上当前列，否则下面如果刚好有删除列的话，会导致增加列成功，然后删除列重建表的时候没有新加的列
//dbtable.Columns.Add(item.Clone(dbtable));
}
}
#endregion
#region 除列
var sbDelete = new StringBuilder();
for (int i = dbtable.Columns.Count - 1; i >= 0; i--)
{
var item = dbtable.Columns[i];
if (!entitydic.ContainsKey(item.ColumnName.ToLower()))
{
if (!String.IsNullOrEmpty(item.Description))
{
PerformSchema(sb, onlySql, DDLSchema.DropColumnDescription, item);
}
PerformSchema(sbDelete, setting.NoDelete, DDLSchema.DropColumn, item);
}
}
if (sbDelete.Length > 0)
{
if (setting.NoDelete)
{
//不许删除列，显示日志
WriteLog("数据表中发现有多余字段，请手工执行以下语句删除：" + Environment.NewLine + sbDelete.ToString());
}
else
{
if (sb.Length > 0)
{
sb.AppendLine(";");
}
sb.Append(sbDelete.ToString());
}
}
#endregion
#region 修改列
// 开发时的实体数据库
var entityDb = DbFactory.Create(entitytable.DbType);
foreach (var item in entitytable.Columns)
{
IDataColumn dbf = null;
if (!dbdic.TryGetValue(item.ColumnName, out dbf))
{
continue;
}
if (IsColumnTypeChanged(item, dbf))
{
WriteLog("字段{0}.{1}类型需要由{2}改变为{3}", entitytable.Name, item.Name, dbf.DataType, item.DataType);
PerformSchema(sb, onlySql, DDLSchema.AlterColumn, item, dbf);
}
if (IsColumnChanged(item, dbf, entityDb))
{
PerformSchema(sb, onlySql, DDLSchema.AlterColumn, item, dbf);
}
if (IsColumnDefaultChanged(item, dbf, entityDb))
{
ChangeColmnDefault(sb, onlySql, item, dbf, entityDb);
}
if (item.Description + "" != dbf.Description + "")
{
// 先删除旧注释
//if (!String.IsNullOrEmpty(dbf.Description)) DropColumnDescription(sb, dbf, onlySql);
//if (!String.IsNullOrEmpty(dbf.Description)) PerformSchema(sb, onlySql, DDLSchema.DropColumnDescription, dbf);
if (dbf.Description != null)
{
PerformSchema(sb, onlySql, DDLSchema.DropColumnDescription, dbf);
}
// 加上新注释
if (!String.IsNullOrEmpty(item.Description))
{
PerformSchema(sb, onlySql, DDLSchema.AddColumnDescription, item);
}
}
}
#endregion
return(sb.ToString());
}
protected virtual void CheckTable(IDataTable entitytable, IDataTable dbtable, NegativeSetting setting)
{
//Boolean onlySql = DAL.NegativeCheckOnly;
if (dbtable == null)
{
// 没有字段的表不创建
if (entitytable.Columns.Count < 1)
{
return;
}
#region 创建表
WriteLog("创建表：{0}({1})", entitytable.TableName, entitytable.Description);
var sb = new StringBuilder();
// 建表，如果不是onlySql，执行时DAL会输出SQL日志
CreateTable(sb, entitytable, setting.CheckOnly);
// 仅获取语句
//if (onlySql) WriteLog("XCode.Negative.Enable没有设置为True，请手工创建表：" + entitytable.Name + Environment.NewLine + sb.ToString());
if (setting.CheckOnly)
{
WriteLog("只检查不对数据库进行操作,请手工创建表：" + entitytable.TableName + Environment.NewLine + sb.ToString());
}
#endregion
}
else
{
#region 修改表
String sql = CheckColumnsChange(entitytable, dbtable, setting);
if (!String.IsNullOrEmpty(sql))
{
sql += ";";
}
sql += CheckTableDescriptionAndIndex(entitytable, dbtable, setting.CheckOnly);
if (!String.IsNullOrEmpty(sql) && setting.CheckOnly)
{
WriteLog("只检查不对数据库进行操作,请手工使用以下语句修改表：" + Environment.NewLine + sql);
}
#endregion
}
}
/// <summary>已重载。因为内存数据库无法检测到架构，不知道表是否已存在，所以需要自己维护</summary>
/// <param name="entitytable"></param>
/// <param name="dbtable"></param>
/// <param name="setting"></param>
protected override void CheckTable(IDataTable entitytable, IDataTable dbtable, NegativeSetting setting)
{
if (dbtable == null && (Database as SQLite).IsMemoryDatabase)
{
if (memoryTables.Any(t => t.TableName.EqualIgnoreCase(entitytable.TableName))) return;
memoryTables.Add(entitytable);
}
base.CheckTable(entitytable, dbtable, setting);
}
private void CheckAllTables(IDataTable[] tables, NegativeSetting setting)
{
// 数据库表进入字典
var dic = new Dictionary<String, IDataTable>(StringComparer.OrdinalIgnoreCase);
var dbtables = OnGetTables(new HashSet<String>(tables.Select(t => t.TableName), StringComparer.OrdinalIgnoreCase));
if (dbtables != null && dbtables.Count > 0)
{
foreach (var item in dbtables)
{
dic.Add(item.TableName, item);
}
}
foreach (var item in tables)
{
try
{
// 判断指定表是否存在于数据库中，以决定是创建表还是修改表
IDataTable dbtable = null;
if (dic.TryGetValue(item.TableName, out dbtable))
CheckTable(item, dbtable, setting);
else
CheckTable(item, null, setting);
}
catch (Exception ex)
{
WriteLog(ex.ToString());
}
}
}
protected override string CheckColumnsChange(IDataTable entitytable, IDataTable dbtable, NegativeSetting setting)
{
foreach (var item in entitytable.Columns)
{
// 自增字段必须是主键
if (item.Identity && !item.PrimaryKey)
{
// 取消所有主键
item.Table.Columns.ForEach(dc => dc.PrimaryKey = false);
// 自增字段作为主键
item.PrimaryKey = true;
break;
}
}
//String sql = base.CheckColumnsChange(entitytable, dbtable, onlySql);
// 把onlySql设为true，让基类只产生语句而不执行
var set = new NegativeSetting();
set.CheckOnly = true;
set.NoDelete = setting.NoDelete;
var sql = base.CheckColumnsChange(entitytable, dbtable, set);
if (String.IsNullOrEmpty(sql))
{
return(sql);
}
// 只有修改字段、删除字段需要重建表
if (!sql.Contains("Alter Column") && !sql.Contains("Drop Column"))
{
if (!setting.CheckOnly)
{
Database.CreateSession().Execute(sql);
}
return(sql);
}
var sql2 = sql;
sql = ReBuildTable(entitytable, dbtable);
if (String.IsNullOrEmpty(sql) || setting.CheckOnly)
{
return(sql);
}
// 输出日志，说明重建表的理由
WriteLog("SQLite需要重建表，因无法执行：{0}", sql2);
Boolean flag = true;
// 如果设定不允许删
if (setting.NoDelete)
{
// 看看有没有数据库里面有而实体库里没有的
foreach (var item in dbtable.Columns)
{
var dc = entitytable.GetColumn(item.ColumnName);
if (dc == null)
{
flag = false;
break;
}
}
}
if (flag)
{
Database.CreateSession().Execute(sql);
}
return(sql);
}
protected override string CheckColumnsChange(IDataTable entitytable, IDataTable dbtable, NegativeSetting setting)
{
foreach (var item in entitytable.Columns)
{
// 自增字段必须是主键
if (item.Identity && !item.PrimaryKey)
{
// 取消所有主键
item.Table.Columns.ForEach(dc => dc.PrimaryKey = false);
// 自增字段作为主键
item.PrimaryKey = true;
break;
}
}
//String sql = base.CheckColumnsChange(entitytable, dbtable, onlySql);
// 把onlySql设为true，让基类只产生语句而不执行
var set = new NegativeSetting();
set.CheckOnly = true;
set.NoDelete = setting.NoDelete;
var sql = base.CheckColumnsChange(entitytable, dbtable, set);
if (String.IsNullOrEmpty(sql)) return sql;
// 只有修改字段、删除字段需要重建表
if (!sql.Contains("Alter Column") && !sql.Contains("Drop Column"))
{
if (!setting.CheckOnly) Database.CreateSession().Execute(sql);
return sql;
}
var sql2 = sql;
sql = ReBuildTable(entitytable, dbtable);
if (String.IsNullOrEmpty(sql) || setting.CheckOnly) return sql;
// 输出日志，说明重建表的理由
WriteLog("SQLite需要重建表，因无法执行：{0}", sql2);
Boolean flag = true;
// 如果设定不允许删
if (setting.NoDelete)
{
// 看看有没有数据库里面有而实体库里没有的
foreach (var item in dbtable.Columns)
{
var dc = entitytable.GetColumn(item.ColumnName);
if (dc == null)
{
flag = false;
break;
}
}
}
if (flag) Database.CreateSession().Execute(sql);
return sql;
}
private void CheckDatabase(NegativeSetting setting)
{
if (hasCheckedDatabase) return;
hasCheckedDatabase = true;
//数据库检查
Boolean dbExist = true;
try
{
dbExist = (Boolean)SetSchema(DDLSchema.DatabaseExist, null);
}
catch
{
// 如果异常，默认认为数据库存在
dbExist = true;
}
if (!dbExist)
{
if (!setting.CheckOnly)
{
WriteLog("创建数据库：{0}", ConnName);
SetSchema(DDLSchema.CreateDatabase, null, null);
}
else
{
var sql = GetSchemaSQL(DDLSchema.CreateDatabase, null, null);
if (String.IsNullOrEmpty(sql))
WriteLog("请为连接{0}创建数据库！", ConnName);
else
WriteLog("请为连接{0}创建数据库，使用以下语句：{1}", ConnName, Environment.NewLine + sql);
}
}
}
protected virtual void OnSetTables(IDataTable[] tables, NegativeSetting setting)
{
CheckDatabase(setting);
CheckAllTables(tables, setting);
}
///// <summary>设置表模型，检查数据表是否匹配表模型，反向工程</summary>
///// <param name="tables"></param>
//[EditorBrowsable(EditorBrowsableState.Never)]
//[Obsolete("请改用多参数版本！")]
//public void SetTables(params IDataTable[] tables)
//{
// //var set = new NegativeSetting();
// //set.CheckOnly = DAL.NegativeCheckOnly;
// //set.NoDelete = DAL.NegativeNoDelete;
// var set = Setting.Current.Negative;
// OnSetTables(tables, set);
//}
/// <summary>设置表模型，检查数据表是否匹配表模型，反向工程</summary>
/// <param name="setting">设置</param>
/// <param name="tables"></param>
public void SetTables(NegativeSetting setting, params IDataTable[] tables)
{
OnSetTables(tables, setting);
}
/// <summary>检查字段改变。某些数据库（如SQLite）没有添删改字段的DDL语法，可重载该方法，使用重建表方法ReBuildTable</summary>
/// <param name="entitytable"></param>
/// <param name="dbtable"></param>
/// <param name="setting"></param>
/// <returns></returns>
protected virtual String CheckColumnsChange(IDataTable entitytable, IDataTable dbtable, NegativeSetting setting)
{
#region 准备工作
var onlySql = setting.CheckOnly;
var sql = String.Empty;
var sb = new StringBuilder();
var entitydic = new Dictionary<String, IDataColumn>(StringComparer.OrdinalIgnoreCase);
if (entitytable.Columns != null)
{
foreach (var item in entitytable.Columns)
{
if (entitydic.ContainsKey(item.ColumnName.ToLower()))
{
WriteLog("《" + entitytable.Name + "》实体中存在重复列名，请检查《" + entitytable.TableName + "》表《" + item.Name + "》属性的ColumnName配置（目前配置为：" + item.ColumnName + "）。");
continue;
}
entitydic.Add(item.ColumnName.ToLower(), item);
}
}
var dbdic = new Dictionary<String, IDataColumn>(StringComparer.OrdinalIgnoreCase);
if (dbtable.Columns != null)
{
foreach (var item in dbtable.Columns)
{
dbdic.Add(item.ColumnName.ToLower(), item);
}
}
#endregion
#region 新增列
foreach (IDataColumn item in entitytable.Columns)
{
if (!dbdic.ContainsKey(item.ColumnName.ToLower()))
{
//AddColumn(sb, item, onlySql);
PerformSchema(sb, onlySql, DDLSchema.AddColumn, item);
if (!String.IsNullOrEmpty(item.Description)) PerformSchema(sb, onlySql, DDLSchema.AddColumnDescription, item);
//! 以下已经不需要了，目前只有SQLite会采用重建表的方式添加删除字段。如果这里提前添加了字段，重建表的时候，会导致失败。
//// 这里必须给dbtable加加上当前列，否则下面如果刚好有删除列的话，会导致增加列成功，然后删除列重建表的时候没有新加的列
//dbtable.Columns.Add(item.Clone(dbtable));
}
}
#endregion
#region 删除列
var sbDelete = new StringBuilder();
for (int i = dbtable.Columns.Count - 1; i >= 0; i--)
{
var item = dbtable.Columns[i];
if (!entitydic.ContainsKey(item.ColumnName.ToLower()))
{
if (!String.IsNullOrEmpty(item.Description)) PerformSchema(sb, onlySql, DDLSchema.DropColumnDescription, item);
PerformSchema(sbDelete, setting.NoDelete, DDLSchema.DropColumn, item);
}
}
if (sbDelete.Length > 0)
{
if (setting.NoDelete)
{
//不许删除列，显示日志
WriteLog("数据表中发现有多余字段，请手工执行以下语句删除：" + Environment.NewLine + sbDelete.ToString());
}
else
{
if (sb.Length > 0) sb.AppendLine(";");
sb.Append(sbDelete.ToString());
}
}
#endregion
#region 修改列
// 开发时的实体数据库
var entityDb = DbFactory.Create(entitytable.DbType);
foreach (var item in entitytable.Columns)
{
IDataColumn dbf = null;
if (!dbdic.TryGetValue(item.ColumnName, out dbf)) continue;
if (IsColumnTypeChanged(item, dbf))
{
WriteLog("字段{0}.{1}类型需要由{2}改变为{3}", entitytable.Name, item.Name, dbf.DataType, item.DataType);
PerformSchema(sb, onlySql, DDLSchema.AlterColumn, item, dbf);
}
if (IsColumnChanged(item, dbf, entityDb)) PerformSchema(sb, onlySql, DDLSchema.AlterColumn, item, dbf);
if (IsColumnDefaultChanged(item, dbf, entityDb)) ChangeColmnDefault(sb, onlySql, item, dbf, entityDb);
if (item.Description + "" != dbf.Description + "")
{
// 先删除旧注释
//if (!String.IsNullOrEmpty(dbf.Description)) DropColumnDescription(sb, dbf, onlySql);
//if (!String.IsNullOrEmpty(dbf.Description)) PerformSchema(sb, onlySql, DDLSchema.DropColumnDescription, dbf);
if (dbf.Description != null) PerformSchema(sb, onlySql, DDLSchema.DropColumnDescription, dbf);
// 加上新注释
if (!String.IsNullOrEmpty(item.Description)) PerformSchema(sb, onlySql, DDLSchema.AddColumnDescription, item);
}
}
#endregion
return sb.ToString();
}
protected virtual void CheckTable(IDataTable entitytable, IDataTable dbtable, NegativeSetting setting)
{
//Boolean onlySql = DAL.NegativeCheckOnly;
if (dbtable == null)
{
// 没有字段的表不创建
if (entitytable.Columns.Count < 1) return;
#region 创建表
WriteLog("创建表：{0}({1})", entitytable.TableName, entitytable.Description);
var sb = new StringBuilder();
// 建表，如果不是onlySql，执行时DAL会输出SQL日志
CreateTable(sb, entitytable, setting.CheckOnly);
// 仅获取语句
//if (onlySql) WriteLog("XCode.Negative.Enable没有设置为True，请手工创建表：" + entitytable.Name + Environment.NewLine + sb.ToString());
if (setting.CheckOnly) WriteLog("只检查不对数据库进行操作,请手工创建表：" + entitytable.TableName + Environment.NewLine + sb.ToString());
#endregion
}
else
{
#region 修改表
String sql = CheckColumnsChange(entitytable, dbtable, setting);
if (!String.IsNullOrEmpty(sql)) sql += ";";
sql += CheckTableDescriptionAndIndex(entitytable, dbtable, setting.CheckOnly);
if (!String.IsNullOrEmpty(sql) && setting.CheckOnly)
{
WriteLog("只检查不对数据库进行操作,请手工使用以下语句修改表：" + Environment.NewLine + sql);
}
#endregion
}
}
protected virtual void OnSetTables(IDataTable[] tables, NegativeSetting setting)
{
CheckDatabase(setting);
CheckAllTables(tables, setting);
}
/// <summary>已重载。因为内存数据库无法检测到架构，不知道表是否已存在，所以需要自己维护</summary>
/// <param name="entitytable"></param>
/// <param name="dbtable"></param>
/// <param name="setting"></param>
protected override void CheckTable(IDataTable entitytable, IDataTable dbtable, NegativeSetting setting)
{
if (dbtable == null && (Database as SQLite).IsMemoryDatabase)
{
if (memoryTables.Any(t => t.TableName.EqualIgnoreCase(entitytable.TableName)))
{
return;
}
memoryTables.Add(entitytable);
}
base.CheckTable(entitytable, dbtable, setting);
}
/// <summary>在当前连接上检查指定数据表的架构</summary>
/// <param name="set"></param>
/// <param name="tables"></param>
public void SetTables(NegativeSetting set, params IDataTable[] tables)
{
if (set == null)
{
set = new NegativeSetting();
set.CheckOnly = Setting.Current.Negative.CheckOnly;
set.NoDelete = Setting.Current.Negative.NoDelete;
}
//if (set.CheckOnly && DAL.Debug) WriteLog("XCode.Negative.CheckOnly设置为True，只是检查不对数据库进行操作");
//if (set.NoDelete && DAL.Debug) WriteLog("XCode.Negative.NoDelete设置为True，不会删除数据表多余字段");
Db.CreateMetaData().SetTables(set, tables);
}
/// <summary>�ڵ�ǰ�����ϼ��ָ�����ݱ�ļܹ�</summary>
/// <param name="tables"></param>
public void SetTables(params IDataTable[] tables)
{
var set = new NegativeSetting();
set.CheckOnly = DAL.NegativeCheckOnly;
set.NoDelete = DAL.NegativeNoDelete;
//if (set.CheckOnly && DAL.Debug) WriteLog("XCode.Negative.CheckOnly����ΪTrue��ֻ�Ǽ�鲻�����ݿ���в���");
//if (set.NoDelete && DAL.Debug) WriteLog("XCode.Negative.NoDelete����ΪTrue������ɾ�����ݱ�����ֶ�");
Db.CreateMetaData().SetTables(set, tables);
}
private void btnCreateDb_Click(object sender, EventArgs e)
{
if (cbConn.SelectedItem == null) return;
var dal = DAL.Create("" + cbConn.SelectedItem);
if (dal == null) return;
try
{
var md = dal.Db.CreateMetaData();
var set = new NegativeSetting();
set.CheckOnly = false;
set.NoDelete = false;
md.SetTables(set, Tables.ToArray());
MessageBox.Show("成功建立" + Tables.Count + "张数据表！", this.Text);
}
catch (Exception ex)
{
MessageBox.Show("建表失败！" + Environment.NewLine + ex.Message, this.Text);
}
}
