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src/sql/engine/expr/ob_expr_ip2int.cpp

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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.
+ */
+
+#define USING_LOG_PREFIX SQL_ENG
+#include <string.h>
+#include "sql/parser/ob_item_type.h"
+#include "sql/engine/expr/ob_expr_ip2int.h"
+//#include "sql/engine/expr/ob_expr_promotion_util.h"
+#include "share/object/ob_obj_cast.h"
+
+using namespace oceanbase::common;
+using namespace oceanbase::sql;
+
+namespace oceanbase {
+namespace sql {
+
+ObExprIp2int::ObExprIp2int(ObIAllocator& alloc)
+    : ObFuncExprOperator(alloc, T_FUN_SYS_IP2INT, N_IP2INT, 1, NOT_ROW_DIMENSION)
+{}
+
+ObExprIp2int::~ObExprIp2int()
+{}
+
+int ObExprIp2int::calc(ObObj& result, const ObObj& text, ObExprCtx& expr_ctx)
+{
+  int ret = OB_SUCCESS;
+  if (text.is_null()) {
+    result.set_null();
+  } else {
+    TYPE_CHECK(text, ObVarcharType);
+    ObString m_text = text.get_string();
+    if (OB_FAIL(ip2int(result, m_text))) {
+      LOG_WARN("fail to convert ip to int", K(ret), K(m_text));
+    }
+  }
+  UNUSED(expr_ctx);
+  return ret;
+}
+
+int ObExprIp2int::calc_result1(ObObj& result, const ObObj& text, ObExprCtx& expr_ctx) const
+{
+  int ret = OB_SUCCESS;
+  if (OB_ISNULL(expr_ctx.calc_buf_)) {
+    ret = OB_NOT_INIT;
+    LOG_WARN("varchar buffer not init", K(ret));
+  } else if (OB_FAIL(calc(result, text, expr_ctx))) {
+    LOG_WARN("fail to calc", K(ret), K(text));
+  } else {
+  }
+  return ret;
+}
+
+template <typename T>
+int ObExprIp2int::ip2int(T& result, const ObString& text)
+{
+  int ret = OB_SUCCESS;
+  char buf[16];
+  if (text.length() > 15) {
+    LOG_WARN("ip format invalid", K(text));
+    result.set_null();
+  } else {
+    MEMCPY(buf, text.ptr(), text.length());
+    int len = text.length();
+    buf[len] = '\0';
+    int cnt = 0;
+    for (int i = 0; OB_SUCC(ret) && i < len; ++i) {
+      if (text.ptr()[i] == '.') {
+        cnt++;
+      } else {
+      }
+    }
+    if (OB_FAIL(ret)) {
+    } else if (cnt != 3) {
+      LOG_WARN("ip format invalid", K(cnt));
+      result.set_null();
+    } else {
+      struct in_addr addr;
+      int err = inet_aton(buf, &addr);
+      if (0 != err) {
+        result.set_int(ntohl(addr.s_addr));
+      } else {
+        LOG_WARN("ip format invalid", K(err), K(buf));
+        result.set_null();
+      }
+    }
+  }
+  return ret;
+}
+
+int ObExprIp2int::cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const
+{
+  UNUSED(op_cg_ctx);
+  UNUSED(raw_expr);
+  int ret = OB_SUCCESS;
+  if (rt_expr.arg_cnt_ != 1) {
+    ret = OB_INVALID_ARGUMENT;
+    LOG_WARN("ip2int expr should have one param", K(ret), K(rt_expr.arg_cnt_));
+  } else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0])) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("children of ip2int expr is null", K(ret), K(rt_expr.args_));
+  } else {
+    CK(ObVarcharType == rt_expr.args_[0]->datum_meta_.type_);
+    rt_expr.eval_func_ = ObExprIp2int::ip2int_varchar;
+  }
+  return ret;
+}
+
+int ObExprIp2int::ip2int_varchar(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum)
+{
+  int ret = OB_SUCCESS;
+  if (OB_FAIL(expr.eval_param_value(ctx))) {
+    LOG_WARN("ip2int expr eval param value failed", K(ret));
+  } else {
+    ObDatum& text = expr.locate_param_datum(ctx, 0);
+    if (text.is_null()) {
+      expr_datum.set_null();
+    } else {
+      ObString m_text = text.get_string();
+      if (OB_FAIL(ip2int(expr_datum, m_text))) {
+        LOG_WARN("fail to convert ip to int", K(ret), K(m_text));
+      }
+    }
+  }
+  return ret;
+}
+
+}  // namespace sql
+}  // namespace oceanbase