support json type

2022-02-08 14:58:13 +08:00
parent 4b25bac8d0
commit e5f59ea074
241 changed files with 46116 additions and 749 deletions
--- a/src/sql/engine/expr/ob_expr_json_depth.cpp
+++ b/src/sql/engine/expr/ob_expr_json_depth.cpp
@ -0,0 +1,131 @@
+/**
+ * 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 json_depth.
+#define USING_LOG_PREFIX SQL_ENG
+#include "ob_expr_json_func_helper.h"
+#include "ob_expr_json_depth.h"
+
+using namespace oceanbase::common;
+using namespace oceanbase::sql;
+
+namespace oceanbase
+{
+namespace sql
+{
+ObExprJsonDepth::ObExprJsonDepth(ObIAllocator &alloc)
+    : ObFuncExprOperator(alloc, T_FUN_SYS_JSON_DEPTH, N_JSON_DEPTH, 1, NOT_ROW_DIMENSION)
+{
+}
+
+ObExprJsonDepth::~ObExprJsonDepth()
+{
+}
+
+int ObExprJsonDepth::calc_result_type1(ObExprResType &type,
+                                       ObExprResType &type1,
+                                       common::ObExprTypeCtx &type_ctx) const
+{
+  UNUSED(type_ctx); 
+  INIT_SUCC(ret);
+  type.set_int32();
+  type.set_scale(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObIntType].scale_);
+  type.set_precision(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObIntType].precision_);
+
+  if (OB_FAIL(ObJsonExprHelper::is_valid_for_json(type1, 1, N_JSON_DEPTH))) {
+    LOG_WARN("wrong type for json doc.", K(ret), K(type1.get_type()));
+  }
+  
+  return ret;
+}
+
+// for old sql engine
+int ObExprJsonDepth::calc_result1(common::ObObj &result,
+                                  const common::ObObj &arg,
+                                  common::ObExprCtx &expr_ctx) const
+{
+  INIT_SUCC(ret);
+  bool is_null_result = false;
+  ObIJsonBase *json_doc = NULL;
+
+  ObIAllocator *allocator = expr_ctx.calc_buf_;
+  if (OB_ISNULL(allocator)) {
+    ret = OB_NOT_INIT;
+    LOG_WARN("allocator not init", K(ret));
+  } else {
+    if (arg.is_null() || arg.get_type() == ObNullType) {
+      is_null_result = true;
+    } else if (OB_FAIL(ObJsonExprHelper::get_json_doc(&arg, allocator, 0,
+                                                      json_doc, is_null_result))) {
+      LOG_WARN("get_json_doc failed", K(ret));
+    } else {
+      // do nothing
+    }
+  }
+
+  // set result
+  if (OB_FAIL(ret)) {
+    LOG_WARN("json_depth failed", K(ret));
+  } else if (is_null_result) {
+    result.set_null();
+  } else {
+    result.set_int32(json_doc->depth());
+  }
+
+  return ret;
+}
+
+int ObExprJsonDepth::eval_json_depth(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res)
+{
+  // get json doc
+  INIT_SUCC(ret);
+  ObDatum *json_datum = NULL;
+  ObExpr *json_arg = expr.args_[0];
+  ObObjType val_type = json_arg->datum_meta_.type_;
+  ObIJsonBase *json_doc = NULL;
+  bool is_null_result = false;
+
+  common::ObArenaAllocator &temp_allocator = ctx.get_reset_tmp_alloc();
+  if (OB_FAIL(json_arg->eval(ctx, json_datum))) {
+    LOG_WARN("eval json arg failed", K(ret));
+  } else if (val_type == ObNullType || json_datum->is_null()) {
+    is_null_result = true;
+  } else if (OB_FAIL(ObJsonExprHelper::get_json_doc(expr, ctx, temp_allocator, 0,
+                                                    json_doc, is_null_result))) {
+    LOG_WARN("get_json_doc failed", K(ret));
+  } else {
+    // do nothing
+  }
+
+  // set result
+  if (OB_FAIL(ret)) {
+    LOG_WARN("json_depth failed", K(ret));
+  } else if (is_null_result) {
+    res.set_null();
+  } else {
+    res.set_int32(json_doc->depth());
+  }
+
+  return ret;
+}
+
+int ObExprJsonDepth::cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr, ObExpr &rt_expr) const
+{
+  UNUSED(expr_cg_ctx);
+  UNUSED(raw_expr);
+  rt_expr.eval_func_ = eval_json_depth;
+  return OB_SUCCESS;
+}
+
+
+}
+}