protected virtual Expression VisitDelete(DbDeleteExpression delete)
{
DbTableExpression table = (DbTableExpression)Visit(delete.Table);
Expression where = Visit(delete.Where);
return(UpdateDelete(delete, table, where));
}
protected DbDeleteExpression UpdateDelete(DbDeleteExpression delete,
DbTableExpression table, Expression where)
{
if (table != delete.Table || where != delete.Where)
{
return(new DbDeleteExpression(table, where));
}
return(delete);
}
protected DbDeleteExpression UpdateDelete(DbDeleteExpression delete,
DbTableExpression table, Expression where)
{
if (table != delete.Table || where != delete.Where)
return new DbDeleteExpression(table, where);
return delete;
}
protected virtual Expression VisitDelete(DbDeleteExpression delete)
{
DbTableExpression table = (DbTableExpression)Visit(delete.Table);
Expression where = Visit(delete.Where);
return UpdateDelete(delete, table, where);
}
protected virtual bool CompareDelete(DbDeleteExpression x, DbDeleteExpression y)
{
return(Compare(x.Table, y.Table) && Compare(x.Where, y.Where));
}
protected override Expression VisitDelete(DbDeleteExpression delete)
{
return(this.BuildExecuteCommand(delete));
}
protected override Expression VisitDelete(DbDeleteExpression delete)
{
this.Write("DELETE FROM ");
bool saveHideTable = this.HideTableAliases;
bool saveHideColumn = this.HideColumnAliases;
this.HideTableAliases = true;
this.HideColumnAliases = true;
this.VisitSource(delete.Table);
if (delete.Where != null)
{
this.WriteLine(Indentation.Same);
this.Write("WHERE ");
this.Visit(delete.Where);
}
this.HideTableAliases = saveHideTable;
this.HideColumnAliases = saveHideColumn;
return delete;
}
protected virtual bool CompareDelete(DbDeleteExpression x, DbDeleteExpression y)
{
return Compare(x.Table, y.Table) && Compare(x.Where, y.Where);
}