public DbInsertExpression(DbTableExpression table,
IEnumerable<DbColumnAssignment> assignments)
: base(DbExpressionType.Insert, typeof(int))
{
_table = table;
_assignments = assignments.AsReadOnly();
}
protected virtual Expression VisitDelete(DbDeleteExpression delete)
{
DbTableExpression table = (DbTableExpression)Visit(delete.Table);
Expression where = Visit(delete.Where);
return(UpdateDelete(delete, table, where));
}
public DbInsertExpression(DbTableExpression table,
IEnumerable <DbColumnAssignment> assignments)
: base(DbExpressionType.Insert, typeof(int))
{
_table = table;
_assignments = assignments.AsReadOnly();
}
protected override Expression VisitTable(DbTableExpression table)
{
DbTableAlias newAlias = new DbTableAlias();
this.map[table.Alias] = newAlias;
return(new DbTableExpression(newAlias, table.Type, table.Name));
}
public DbUpdateExpression(DbTableExpression table,
Expression where, IEnumerable<DbColumnAssignment> assignments)
: base(DbExpressionType.Update, typeof(int))
{
_table = table;
_where = where;
_assignments = assignments.AsReadOnly();
}
public DbUpdateExpression(DbTableExpression table,
Expression where, IEnumerable <DbColumnAssignment> assignments)
: base(DbExpressionType.Update, typeof(int))
{
_table = table;
_where = where;
_assignments = assignments.AsReadOnly();
}
protected virtual Expression VisitInsert(DbInsertExpression insert)
{
DbTableExpression table = (DbTableExpression)Visit(insert.Table);
ReadOnlyCollection <DbColumnAssignment> assignments =
VisitColumnAssignments(insert.Assignments);
return(UpdateInsert(insert, table, assignments));
}
protected DbInsertExpression UpdateInsert(DbInsertExpression insert,
DbTableExpression table, IEnumerable <DbColumnAssignment> assignments)
{
if (table != insert.Table || assignments != insert.Assignments)
{
return(new DbInsertExpression(table, assignments));
}
return(insert);
}
protected virtual Expression VisitUpdate(DbUpdateExpression update)
{
DbTableExpression table = (DbTableExpression)Visit(update.Table);
Expression where = Visit(update.Where);
ReadOnlyCollection <DbColumnAssignment> assignments =
VisitColumnAssignments(update.Assignments);
return(UpdateUpdate(update, table, where, assignments));
}
protected DbDeleteExpression UpdateDelete(DbDeleteExpression delete,
DbTableExpression table, Expression where)
{
if (table != delete.Table || where != delete.Where)
{
return(new DbDeleteExpression(table, where));
}
return(delete);
}
protected DbUpdateExpression UpdateUpdate(DbUpdateExpression update,
DbTableExpression table, Expression where, IEnumerable <DbColumnAssignment> assignments)
{
if (table != update.Table || where != update.Where ||
assignments != update.Assignments)
{
return(new DbUpdateExpression(table, where, assignments));
}
return(update);
}
protected DbDeleteExpression UpdateDelete(DbDeleteExpression delete,
DbTableExpression table, Expression where)
{
if (table != delete.Table || where != delete.Where)
return new DbDeleteExpression(table, where);
return delete;
}
protected DbUpdateExpression UpdateUpdate(DbUpdateExpression update,
DbTableExpression table, Expression where, IEnumerable<DbColumnAssignment> assignments)
{
if (table != update.Table || where != update.Where ||
assignments != update.Assignments)
return new DbUpdateExpression(table, where, assignments);
return update;
}
protected DbInsertExpression UpdateInsert(DbInsertExpression insert,
DbTableExpression table, IEnumerable<DbColumnAssignment> assignments)
{
if (table != insert.Table || assignments != insert.Assignments)
return new DbInsertExpression(table, assignments);
return insert;
}
protected virtual bool CompareTable(DbTableExpression a, DbTableExpression b)
{
return(a.Name == b.Name);
}
public DbDeleteExpression(DbTableExpression table, Expression where)
: base(DbExpressionType.Delete, typeof(int))
{
_table = table;
_where = where;
}
public DbDeleteExpression(DbTableExpression table, Expression where)
: base(DbExpressionType.Delete, typeof(int))
{
_table = table;
_where = where;
}
protected override Expression VisitTable(DbTableExpression table)
{
this.aliases.Add(table.Alias);
return(table);
}
protected virtual Expression VisitTable(DbTableExpression table)
{
return table;
}
protected virtual bool CompareTable(DbTableExpression a, DbTableExpression b)
{
return (a.Name == b.Name);
}
protected override Expression VisitTable(DbTableExpression table)
{
this.aliases.Add(table.Alias);
return table;
}
protected override Expression VisitTable(DbTableExpression table)
{
DbTableAlias newAlias = new DbTableAlias();
this.map[table.Alias] = newAlias;
return new DbTableExpression(newAlias, table.Type, table.Name);
}
protected virtual Expression VisitTable(DbTableExpression table)
{
return(table);
}
