Update error code.

Author: LinZhihao-723

components/core/src/clp/ffi/ir_stream/search/QueryHandlerErrorCode.cpp

@@ -0,0 +1,21 @@
+#include "QueryHandlerErrorCode.hpp"
+
+#include <ystdlib/error_handling/ErrorCode.hpp>
+
+using clp::ffi::ir_stream::search::QueryHandlerErrorCodeEnum;
+using QueryHandlerErrorCategory = ystdlib::error_handling::ErrorCategory<QueryHandlerErrorCodeEnum>;
+
+template <>
+auto QueryHandlerErrorCategory::name() const noexcept -> char const* {
+    return "clp::ffi::ir_stream::search::QueryHandlerError";
+}
+
+template <>
+auto QueryHandlerErrorCategory::message(QueryHandlerErrorCodeEnum error_enum) const -> std::string {
+    switch (error_enum) {
+        case QueryHandlerErrorCodeEnum::MethodNotImplemented:
+            return "The requested method is not implemented.";
+        default:
+            return "Unknown error code enum.";
+    }
+}

components/core/src/clp/ffi/ir_stream/search/QueryHandlerErrorCode.hpp

@@ -0,0 +1,23 @@
+#ifndef CLP_FFI_IR_STREAM_SEARCH_QUERYHANDLERERRORCODE_HPP
+#define CLP_FFI_IR_STREAM_SEARCH_QUERYHANDLERERRORCODE_HPP
+
+#include <cstdint>
+
+#include <ystdlib/error_handling/ErrorCode.hpp>
+
+namespace clp::ffi::ir_stream::search {
+/**
+ * This enum class represents all possible error codes related to query handler.
+ */
+enum class QueryHandlerErrorCodeEnum : uint8_t {
+    MethodNotImplemented,
+};
+
+using QueryHandlerErrorCode = ystdlib::error_handling::ErrorCode<QueryHandlerErrorCodeEnum>;
+}  // namespace clp::ffi::ir_stream::search
+
+YSTDLIB_ERROR_HANDLING_MARK_AS_ERROR_CODE_ENUM(
+        clp::ffi::ir_stream::search::QueryHandlerErrorCodeEnum
+);
+
+#endif  // CLP_FFI_IR_STREAM_SEARCH_QUERYHANDLERERRORCODE_HPP