patch 4.0
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@ -16,32 +16,41 @@
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#include "lib/string/ob_string.h"
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#include "sql/engine/expr/ob_expr_regexp_context.h"
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namespace oceanbase {
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namespace sql {
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class ObExprRegexpCount : public ObFuncExprOperator {
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namespace oceanbase
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{
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namespace sql
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{
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class ObExprRegexpCount : public ObFuncExprOperator
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{
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public:
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explicit ObExprRegexpCount(common::ObIAllocator& alloc);
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explicit ObExprRegexpCount(common::ObIAllocator &alloc);
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virtual ~ObExprRegexpCount();
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virtual int calc_result_typeN(
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ObExprResType& type, ObExprResType* types, int64_t param_num, common::ObExprTypeCtx& type_ctx) const override;
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virtual int calc_resultN(
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common::ObObj& result, const common::ObObj* objs, int64_t param_num, common::ObExprCtx& expr_ctx) const override;
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virtual int calc_result_typeN(ObExprResType &type,
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ObExprResType *types,
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int64_t param_num,
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common::ObExprTypeCtx &type_ctx) const;
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virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const override;
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virtual bool need_rt_ctx() const override { return true; }
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virtual int cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
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static int eval_regexp_count(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
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static int get_regexp_flags(
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const common::ObCollationType calc_cs_type, const common::ObString& match_param, int& flags, int& multi_flag);
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static int eval_regexp_count(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
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static int get_regexp_flags(const common::ObCollationType calc_cs_type,
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const common::ObString &match_param,
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int &flags,
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int &multi_flag);
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private:
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static int calc(int64_t& ret_count, const common::ObString& text, const common::ObString& pattern, int64_t position,
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const common::ObCollationType calc_cs_type, const common::ObString& match_param, int64_t subexpr,
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bool has_null_argument, ObExprRegexContext* regexp_ptr, common::ObExprStringBuf& string_buf);
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static int calc(int64_t &ret_count, const common::ObString &text,
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const common::ObString &pattern, int64_t position,
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const common::ObCollationType calc_cs_type,
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const common::ObString &match_param, int64_t subexpr, bool has_null_argument,
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bool reusable, ObExprRegexContext *regexp_ptr,
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common::ObExprStringBuf &string_buf,
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common::ObIAllocator &exec_ctx_alloc);
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private:
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DISALLOW_COPY_AND_ASSIGN(ObExprRegexpCount);
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};
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} // namespace sql
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} // namespace oceanbase
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}
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}
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#endif /* OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_REGEXP_SUBSTR_ */
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