init push

src/sql/engine/expr/ob_expr_bool.cpp

@@ -0,0 +1,155 @@
+/**
+ * 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.
+ */
+
+#define USING_LOG_PREFIX SQL_ENG
+
+#include "sql/engine/expr/ob_expr_bool.h"
+
+namespace oceanbase {
+namespace sql {
+
+using namespace oceanbase::common;
+
+ObExprBool::ObExprBool(ObIAllocator& alloc) : ObLogicalExprOperator(alloc, T_OP_BOOL, N_BOOL, 1, NOT_ROW_DIMENSION)
+{}
+
+ObExprBool::~ObExprBool()
+{}
+
+int ObExprBool::calc_result_type1(ObExprResType& type, ObExprResType& type1, ObExprTypeCtx& type_ctx) const
+{
+  int ret = OB_SUCCESS;
+  UNUSED(type_ctx);
+  if (!lib::is_mysql_mode()) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("bool expr is only for mysql mode", K(ret));
+  } else if (ob_is_numeric_type(type1.get_type())) {
+    type1.set_calc_meta(type1.get_obj_meta());
+    type1.set_calc_accuracy(type1.get_accuracy());
+  } else {
+    const ObObjType& calc_type = ObDoubleType;
+    type1.set_calc_type(calc_type);
+    const ObAccuracy& calc_acc = ObAccuracy::DDL_DEFAULT_ACCURACY2[0][calc_type];
+    type1.set_calc_accuracy(calc_acc);
+  }
+  const ObAccuracy& res_acc = ObAccuracy::DDL_DEFAULT_ACCURACY2[0][ObInt32Type];
+  type.set_type(ObInt32Type);
+  type.set_accuracy(res_acc);
+  ObExprOperator::calc_result_flag1(type, type1);
+  type_ctx.set_cast_mode(type_ctx.get_cast_mode() | CM_NO_RANGE_CHECK);
+  return ret;
+}
+
+#define CHECK_IS_TRUE_FUNC_NAME(type) \
+  int calc_bool_expr_for_##type(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res_datum)
+
+#define EVAL_ARG()                                      \
+  int ret = OB_SUCCESS;                                 \
+  ObDatum* child_datum = NULL;                          \
+  if (OB_FAIL(expr.args_[0]->eval(ctx, child_datum))) { \
+    LOG_WARN("eval arg 0 failed", K(ret));              \
+  } else if (child_datum->is_null()) {                  \
+    res_datum.set_null();                               \
+  } else
+
+CHECK_IS_TRUE_FUNC_NAME(integer_type)
+{
+  EVAL_ARG()
+  {
+    int32_t res = (0 == child_datum->get_int()) ? 0 : 1;
+    res_datum.set_int32(res);
+  }
+  return ret;
+}
+
+CHECK_IS_TRUE_FUNC_NAME(float_type)
+{
+  EVAL_ARG()
+  {
+    int32_t res = (0 == child_datum->get_float()) ? 0 : 1;
+    res_datum.set_int32(res);
+  }
+  return ret;
+}
+
+CHECK_IS_TRUE_FUNC_NAME(double_type)
+{
+  EVAL_ARG()
+  {
+    int32_t res = (0 == child_datum->get_double()) ? 0 : 1;
+    res_datum.set_int32(res);
+  }
+  return ret;
+}
+
+CHECK_IS_TRUE_FUNC_NAME(other_type)
+{
+  EVAL_ARG()
+  {
+    int32_t res = child_datum->get_number().is_zero() ? 0 : 1;
+    res_datum.set_int32(res);
+  }
+  return ret;
+}
+
+int ObExprBool::cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const
+{
+  int ret = OB_SUCCESS;
+  OB_ASSERT(false == lib::is_oracle_mode());
+  UNUSED(expr_cg_ctx);
+  UNUSED(raw_expr);
+  if (OB_UNLIKELY(1 != rt_expr.arg_cnt_) || OB_ISNULL(rt_expr.args_)) {
+    ret = OB_INVALID_ARGUMENT;
+    LOG_WARN("arg cnt is invalid or args_ is NULL", K(ret), K(rt_expr));
+  } else {
+    const ObDatumMeta child_res_meta = rt_expr.args_[0]->datum_meta_;
+    switch (child_res_meta.type_) {
+      case ObTinyIntType:
+      case ObSmallIntType:
+      case ObMediumIntType:
+      case ObInt32Type:
+      case ObIntType:
+      case ObUTinyIntType:
+      case ObUSmallIntType:
+      case ObUMediumIntType:
+      case ObUInt32Type:
+      case ObUInt64Type:
+      case ObBitType: {
+        rt_expr.eval_func_ = calc_bool_expr_for_integer_type;
+        break;
+      }
+      case ObFloatType:
+      case ObUFloatType: {
+        rt_expr.eval_func_ = calc_bool_expr_for_float_type;
+        break;
+      }
+      case ObDoubleType:
+      case ObUDoubleType: {
+        rt_expr.eval_func_ = calc_bool_expr_for_double_type;
+        break;
+      }
+      case ObMaxType: {
+        ret = OB_ERR_UNEXPECTED;
+        LOG_WARN("bool expr got unexpected type", K(ret), K(child_res_meta));
+        break;
+      }
+      default: {
+        rt_expr.eval_func_ = calc_bool_expr_for_other_type;
+        break;
+      }
+    }
+  }
+  return ret;
+}
+
+}  // namespace sql
+}  // namespace oceanbase