[FEAT MERGE] GIS

src/sql/engine/expr/ob_expr_st_srid.h

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+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ * This file contains implementation for st_srid.
+ */
+
+#ifndef OCEANBASE_SQL_OB_EXPR_ST_SRID_
+#define OCEANBASE_SQL_OB_EXPR_ST_SRID_
+
+#include "sql/engine/expr/ob_expr_operator.h"
+
+
+namespace oceanbase
+{
+namespace sql
+{
+class ObExprSTSRID : public ObFuncExprOperator
+{
+public:
+  explicit ObExprSTSRID(common::ObIAllocator &alloc);
+  explicit ObExprSTSRID(common::ObIAllocator &alloc, ObExprOperatorType type,
+                        const char *name, int32_t param_num, int32_t dimension);
+  virtual ~ObExprSTSRID();
+  virtual int calc_result_typeN(ObExprResType& type,
+                                ObExprResType* types,
+                                int64_t param_num,
+                                common::ObExprTypeCtx& type_ctx)
+                                const override;
+  static int eval_st_srid(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res);
+  static int eval_st_srid_common(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res, const char *func_name);
+  virtual int cg_expr(ObExprCGCtx &expr_cg_ctx,
+                      const ObRawExpr &raw_expr,
+                      ObExpr &rt_expr) const override;
+private:
+  DISALLOW_COPY_AND_ASSIGN(ObExprSTSRID);
+};
+
+} // sql
+} // oceanbase
+#endif // OCEANBASE_SQL_OB_EXPR_ST_SRID_