JoinCondition.h
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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/JoinCondition.h
22 
23  \brief A condition to be used in a Join clause.
24 */
25 
26 #ifndef __TERRALIB_DATAACCESS_INTERNAL_JOINCONDITION_H
27 #define __TERRALIB_DATAACCESS_INTERNAL_JOINCONDITION_H
28 
29 // TerraLib
30 #include "../../common/BaseVisitable.h"
31 #include "QueryVisitor.h"
32 
33 namespace te
34 {
35  namespace da
36  {
37  /*!
38  \class JoinCondition
39 
40  \brief A condition to be used in a Join clause.
41 
42  \sa Join, JoinConditionNatural, JoinConditionOn, JoinConditionUsing
43  */
45  {
46  public:
47 
49 
50  /*! \brief Default constructor. */
52 
53  /*! \brief Virtual destructor. */
54  virtual ~JoinCondition() {}
55 
56  /*! \brief It creates a new copy of this JoinCondition. */
57  virtual JoinCondition* clone() const = 0;
58  };
59 
60  /*! \brief For use with boost conteiners. */
62  {
63  return a.clone();
64  }
65 
66  } // end namespace da
67 } // end namespace te
68 
69 #endif // __TERRALIB_DATAACCESS_INTERNAL_JOINCONDITION_H
70 
virtual JoinCondition * clone() const =0
It creates a new copy of this JoinCondition.
The root of all hierarchies that can be visited.
Definition: BaseVisitable.h:53
TE_DEFINE_VISITABLE JoinCondition()
Default constructor.
Definition: JoinCondition.h:51
A visitor interface for the Query hierarchy.
URI C++ Library.
A condition to be used in a Join clause.
Definition: JoinCondition.h:44
virtual ~JoinCondition()
Virtual destructor.
Definition: JoinCondition.h:54
#define TE_DEFINE_VISITABLE
Definition: BaseVisitable.h:75
Expression * new_clone(const Expression &a)
For use with boost conteiners.
Definition: Expression.h:64
#define TEDATAACCESSEXPORT
You can use this macro in order to export/import classes and functions from this module.
Definition: Config.h:97