init push

2021-05-31 22:56:52 +08:00
commit cea7de1475
7020 changed files with 5689869 additions and 0 deletions
--- a/src/sql/engine/expr/ob_expr_vsize.cpp
+++ b/src/sql/engine/expr/ob_expr_vsize.cpp
@ -0,0 +1,104 @@
+/**
+ * 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_vsize.h"
+#include "sql/engine/expr/ob_expr_util.h"
+#include "sql/parser/ob_item_type.h"
+#include "share/object/ob_obj_cast.h"
+
+using namespace oceanbase::common;
+using namespace oceanbase::sql;
+
+namespace oceanbase {
+namespace sql {}
+}  // namespace oceanbase
+
+ObExprVsize::ObExprVsize(ObIAllocator& alloc)
+    : ObFuncExprOperator(alloc, T_FUN_SYS_VSIZE, N_VSIZE, 1, NOT_ROW_DIMENSION)
+{}
+
+ObExprVsize::~ObExprVsize()
+{}
+
+bool ObExprVsize::is_blob_type(const ObObj& input) const
+{
+  return input.meta_.is_clob() || input.meta_.is_blob() || input.meta_.is_lob();
+}
+
+int ObExprVsize::calc_result_type1(ObExprResType& type, ObExprResType& type1, common::ObExprTypeCtx& type_ctx) const
+{
+  UNUSED(type1);
+  UNUSED(type_ctx);
+  int ret = OB_SUCCESS;
+  if (OB_UNLIKELY(type1.is_lob())) {
+    // consistent to oracle error code;
+    ret = OB_ERR_INVALID_TYPE_FOR_OP;
+    LOG_WARN("inconsistent datatypes.", K(ret));
+  } else {
+    type.set_number();
+    type.set_scale(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObNumberType].scale_);
+    type.set_precision(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObNumberType].precision_);
+    type.set_calc_type(common::ObNumberType);
+  }
+  return ret;
+}
+
+int ObExprVsize::calc_result1(ObObj& result, const ObObj& input, ObExprCtx& expr_ctx) const
+{
+  int ret = OB_SUCCESS;
+  if (OB_UNLIKELY(NULL == expr_ctx.calc_buf_)) {
+    ret = OB_NOT_INIT;
+    LOG_WARN("varchar buffer not init", K(ret));
+  } else if (OB_UNLIKELY(input.is_null())) {
+    result.set_null();
+  } else {
+    number::ObNumber vsize;
+    ret = vsize.from(input.get_data_length(), *(expr_ctx.calc_buf_));
+    if (OB_FAIL(ret)) {
+      LOG_WARN("generator vsize result failed.", K(ret));
+    } else {
+      result.set_number(vsize);
+    }
+  }
+  return ret;
+}
+
+int ObExprVsize::calc_vsize_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res)
+{
+  int ret = OB_SUCCESS;
+  ObDatum* arg = NULL;
+  if (OB_FAIL(expr.eval_param_value(ctx, arg))) {
+    LOG_WARN("eval arg failed", K(ret));
+  } else if (arg->is_null()) {
+    res.set_null();
+  } else {
+    number::ObNumber res_nmb;
+    ObNumStackOnceAlloc res_alloc;
+    ret = res_nmb.from(static_cast<uint64_t>(arg->len_), res_alloc);
+    if (OB_FAIL(ret)) {
+      LOG_WARN("generator vsize result failed.", K(ret));
+    } else {
+      res.set_number(res_nmb);
+    }
+  }
+  return ret;
+}
+
+int ObExprVsize::cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const
+{
+  int ret = OB_SUCCESS;
+  UNUSED(expr_cg_ctx);
+  UNUSED(raw_expr);
+  rt_expr.eval_func_ = calc_vsize_expr;
+  return ret;
+}