SelectExpression.cpp
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1 /* Copyright (C) 2008 National Institute For Space Research (INPE) - Brazil.
2 
3  This file is part of the TerraLib - a Framework for building GIS enabled applications.
4 
5  TerraLib is free software: you can redistribute it and/or modify
6  it under the terms of the GNU Lesser General Public License as published by
7  the Free Software Foundation, either version 3 of the License,
8  or (at your option) any later version.
9 
10  TerraLib is distributed in the hope that it will be useful,
11  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  GNU Lesser General Public License for more details.
14 
15  You should have received a copy of the GNU Lesser General Public License
16  along with TerraLib. See COPYING. If not, write to
17  TerraLib Team at <terralib-team@terralib.org>.
18  */
19 
20 /*!
21  \file terralib/dataaccess/query/SelectExpression.cpp
22 
23  \brief A Select can be used as a source of information in another query.
24 */
25 
26 // TerraLib
27 #include "Select.h"
28 #include "SelectExpression.h"
29 
31  : m_select(s)
32 {
33 }
34 
36  : m_select(static_cast<Select*>(s.clone()))
37 {
38 }
39 
41 
42 {
43  m_select.reset(rhs.m_select.get() ? static_cast<Select*>(rhs.m_select->clone()) : nullptr);
44 }
45 
47 {
48  if(this != &rhs)
49  m_select.reset(rhs.m_select.get() ? static_cast<Select*>(rhs.m_select->clone()) : nullptr);
50 
51  return *this;
52 }
53 
55 {
56  return new SelectExpression(*this);
57 }
58 
60 {
61  return m_select.get();
62 }
63 
65 {
66  m_select.reset(s);
67 }
TE_DEFINE_VISITABLE SelectExpression(Select *s)
Constructor.
std::unique_ptr< Select > m_select
The associated SelectExpression.
This is an abstract class that models a query expression.
SelectExpression & operator=(const SelectExpression &rhs)
A Select models a query to be used when retrieving data from a data source.
Expression * clone() const
It creates a new copy of this Expression.
A Select models a query to be used when retrieving data from a DataSource.
Definition: Select.h:65
Select * getSelect() const
It returns the associated select expression.
A Select can be used as a source of information in another query.
void setSelect(Select *s)
It sets the real SelectExpression associated to this object.
A Select can be used as a source of information in another query.