/// <summary>
/// 创建数据表语句片段。
/// </summary>
/// <param name="context">生成上下文。</param>
/// <returns>语句片段。</returns>
protected virtual SqlFragment GenerateForMaintenanceCreateTable(GenerateContext context)
{
var operate = (DbCreateTableOperate)context.Data.Operate;
var metadata = context.Metadata.Table(context.Data.Operate.ClrType);
if (operate.Type == EOperateType.CreateTable)
{
var name = context.ConvertName(operate.Name);
return(new CreateTableFragment(context, metadata, name));
}
else
{
var members = metadata.InheritSets.SelectMany(a => a.Members).Concat(metadata.Members);
INameFragment name = null;
if (operate.Type == EOperateType.CreateTempTable)
{
name = new TempTableNameFragment(context, operate.Name.Name);
return(new CreateTempTableFragment(context, members, name)
{
IsVariable = false
});
}
else
{
name = new VariableFragment(context, operate.Name.Name);
return(new CreateTempTableFragment(context, members, name)
{
IsVariable = true
});
}
}
}
/// <summary>Skips over any modifiers found in the given code fragment, returning the first non-modifier fragment found.</summary>
/// <param name="fragment">The place to start from.</param>
/// <returns>The first non-modifier fragment found. May be the given fragment if it is not a modifier.</returns>
public static CodeFragment Skip(CodeFragment fragment)
{
if (fragment == null || fragment.GetType() != typeof(VariableFragment))
{
return(fragment);
}
VariableFragment vfragment = (VariableFragment)fragment;
if (vfragment.Value == "private")
{
if (fragment.NextChild == null)
{
vfragment.Error("Error: 'private' is an access modifier and it must be followed by something. (e.g. private var i..)");
}
return(Skip(fragment.NextChild));
}
return(fragment);
}
