ROL
ROL_SampledVector.hpp
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43 
44 
45 #ifndef ROL_SAMPLEDVECTOR_H
46 #define ROL_SAMPLEDVECTOR_H
47 
48 namespace ROL {
49 
50 template <class Real>
52 private:
53  // Storage
54  std::map<std::vector<Real>, int> indices_;
55  std::vector<bool> flags_;
56  std::vector<ROL::Ptr<Vector<Real> > > vectors_;
57  int maxIndex_;
58 
59  // Update flags
60  bool updated_;
61 
62  void reset(const bool flag = true) {
63  if ( flag ) {
64  typename std::map<std::vector<Real>, int>::iterator it;
65  for (it = indices_.begin(); it != indices_.end(); ++it) {
66  flags_[it->second] = false;
67  }
68  }
69  }
70 
71 public:
75  : maxIndex_(0), updated_(false) {
76  indices_.clear();
77  flags_.clear();
78  vectors_.clear();
79  }
80 
83  void update(const bool flag = true) {
84  updated_ = flag;
85  reset(flag);
86  }
87 
90  bool get(Vector<Real> &x,
91  const std::vector<Real> &param) {
92  int count = indices_.count(param);
93  bool flag = false;
94  int index = maxIndex_;
95  if (count) {
96  typename std::map<std::vector<Real>, int>::iterator it
97  = indices_.find(param);
98  index = it->second;
99  flag = flags_[index];
100  if (flag) {
101  x.set(*vectors_[index]);
102  }
103  }
104  else {
105  indices_.insert(
106  std::pair<std::vector<Real>, int>(param, index));
107  flags_.push_back(false);
108  vectors_.push_back(x.clone());
109  maxIndex_++;
110  }
111  return flag;
112  }
113 
116  void set(const Vector<Real> &x,
117  const std::vector<Real> &param) {
118  int count = indices_.count(param);
119  int index = maxIndex_;
120  if (count) {
121  typename std::map<std::vector<Real>, int>::iterator it
122  = indices_.find(param);
123  index = it->second;
124  flags_[index] = true;
125  vectors_[index]->set(x);
126  }
127  else {
128  indices_.insert(
129  std::pair<std::vector<Real>, int>(param, index));
130  flags_.push_back(true);
131  vectors_.push_back(x.clone());
132  vectors_[index]->set(x);
133  maxIndex_++;
134  }
135  }
136 }; // class SampledVector
137 
138 } // namespace ROL
139 
140 #endif
virtual ROL::Ptr< Vector > clone() const =0
Clone to make a new (uninitialized) vector.
void reset(const bool flag=true)
std::vector< ROL::Ptr< Vector< Real > > > vectors_
Defines the linear algebra or vector space interface.
Definition: ROL_Vector.hpp:80
SampledVector(void)
Constructor.
std::vector< bool > flags_
void set(const Vector< Real > &x, const std::vector< Real > &param)
Set vector corresponding to input parameter.
std::map< std::vector< Real >, int > indices_
void update(const bool flag=true)
Update for SampledVector storage.