[2458] | 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 <tables/Tables/ExprNode.h> |
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| 16 | #include <tables/Tables/ScalarColumn.h> |
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| 17 | |
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| 18 | namespace asap { |
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| 19 | |
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| 20 | using namespace casa; |
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| 21 | |
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| 22 | class CustomTableExprNodeRep :public TableExprNodeRep { |
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| 23 | public: |
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| 24 | CustomTableExprNodeRep(const Table &table) |
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| 25 | :TableExprNodeRep(TableExprNodeRep::NTBool, |
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| 26 | TableExprNodeRep::VTScalar, |
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| 27 | TableExprNodeRep::OtUndef, |
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| 28 | table) {} |
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| 29 | }; |
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| 30 | |
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| 31 | class TableExprPredicate { |
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| 32 | public: |
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| 33 | virtual ~TableExprPredicate() {} |
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| 34 | virtual Bool match(Table const& table, const TableExprId& id) const = 0; |
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| 35 | }; |
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| 36 | |
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| 37 | class CustomTableExprNode: public TableExprNode { |
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| 38 | CustomTableExprNodeRep const nodeRep; |
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| 39 | TableExprPredicate const & pred_; |
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| 40 | public: |
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| 41 | CustomTableExprNode(Table const &table, TableExprPredicate const &pred) |
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| 42 | : TableExprNode(), nodeRep(table), pred_(pred) { |
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| 43 | } |
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| 44 | virtual ~CustomTableExprNode() { |
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| 45 | } |
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| 46 | const TableExprNodeRep* getNodeRep() const { |
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| 47 | return &nodeRep; |
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| 48 | } |
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| 49 | void get(const TableExprId& id, Bool& value) const { |
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| 50 | value = pred_.match(nodeRep.table(), id); |
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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) const { |
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| 74 | for (size_t i = 0; i < N; i++) { |
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| 75 | T v; |
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| 76 | cols[i]->get(id.rownr(), v); |
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| 77 | if (v != values[i]) { |
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| 78 | return false; |
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| 79 | } |
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| 80 | } |
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| 81 | return true; |
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| 82 | } |
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| 83 | }; |
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| 84 | |
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| 85 | } // asap |
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| 86 | |
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| 87 | #endif // ASAPACCELERATOR_H |
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