1 | #ifndef ASAPACCELERATOR_H |
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2 | #define ASAPACCELERATOR_H |
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3 | // |
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4 | // C++ Interface: CustomTableExprNode |
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5 | // |
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6 | // Description: |
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7 | // Various utilities for speed. |
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8 | // |
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9 | // Author: Kohji Nakamura <k.nakamura@nao.ac.jp>, (C) 2012 |
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10 | // |
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11 | // Copyright: See COPYING file that comes with this distribution |
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12 | // |
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13 | // |
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14 | |
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15 | #include <casa/Utilities/Assert.h> |
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16 | #include <tables/Tables/ExprNode.h> |
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17 | #include <tables/Tables/ScalarColumn.h> |
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18 | |
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19 | namespace asap { |
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20 | |
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21 | using namespace casa; |
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22 | |
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23 | class TableExprPredicate { |
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24 | public: |
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25 | virtual ~TableExprPredicate() {} |
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26 | virtual Bool match(Table const& table, const TableExprId& id) = 0; |
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27 | }; |
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28 | |
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29 | class CustomTableExprNodeRep :public TableExprNodeRep { |
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30 | TableExprPredicate & pred_; |
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31 | public: |
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32 | CustomTableExprNodeRep(const Table &table, |
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33 | TableExprPredicate & pred) |
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34 | :TableExprNodeRep(TableExprNodeRep::NTBool, |
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35 | TableExprNodeRep::VTScalar, |
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36 | TableExprNodeRep::OtUndef, |
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37 | table), |
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38 | pred_(pred) {} |
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39 | virtual ~CustomTableExprNodeRep() {} |
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40 | virtual Bool getBool(const TableExprId& id) { |
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41 | return pred_.match(table(), id); |
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42 | } |
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43 | }; |
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44 | |
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45 | class CustomTableExprNode: public TableExprNode { |
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46 | public: |
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47 | CustomTableExprNode(CustomTableExprNodeRep &nodeRep) |
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48 | : TableExprNode(&nodeRep) { |
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49 | } |
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50 | virtual ~CustomTableExprNode() { |
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51 | } |
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52 | }; |
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53 | |
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54 | template<typename T, size_t N> |
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55 | class SingleTypeEqPredicate: public TableExprPredicate { |
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56 | Table const & table; |
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57 | ROScalarColumn<T> *cols[N]; |
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58 | T const *values; |
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59 | public: |
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60 | SingleTypeEqPredicate(Table const &table_, |
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61 | char const*const colNames[], |
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62 | T const values_[]): |
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63 | table(table_), values(values_) { |
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64 | for (size_t i = 0; i < N; i++) { |
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65 | cols[i] = new ROScalarColumn<T>(table, colNames[i]); |
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66 | } |
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67 | } |
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68 | virtual ~SingleTypeEqPredicate() { |
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69 | for (size_t i = 0; i < N; i++) { |
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70 | delete cols[i]; |
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71 | } |
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72 | } |
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73 | virtual Bool match(Table const& table, const TableExprId& id) { |
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74 | DebugAssert(&table == &this->table, AipsError); |
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75 | for (size_t i = 0; i < N; i++) { |
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76 | T v; |
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77 | cols[i]->get(id.rownr(), v); |
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78 | if (v != values[i]) { |
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79 | return false; |
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80 | } |
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81 | } |
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82 | return true; |
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83 | } |
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84 | }; |
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85 | |
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86 | } // asap |
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87 | |
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88 | #endif // ASAPACCELERATOR_H |
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