[refactor](table) Refactor table and file reader

.gitignore

@@ -153,3 +153,4 @@ compile_commands.json
 .github
 
 .worktrees/
+.worktree_initialized

be/src/core/data_type_serde/data_type_datetimev2_serde.cpp

@@ -28,6 +28,7 @@
 #include "core/data_type/data_type_decimal.h"
 #include "core/data_type/data_type_number.h"
 #include "core/data_type/primitive_type.h"
+#include "core/data_type_serde/decoded_column_view.h"
 #include "core/types.h"
 #include "core/value/vdatetime_value.h"
 #include "exprs/function/cast/cast_to_datetimev2_impl.hpp"
@@ -43,6 +44,95 @@ enum {
 namespace doris {
 static const int64_t micro_to_nano_second = 1000;
 
+namespace {
+
+#pragma pack(1)
+struct DecodedInt96Timestamp {
+    int64_t nanos_of_day;
+    int32_t julian_day;
+
+    int64_t to_timestamp_micros() const {
+        static constexpr int32_t JULIAN_EPOCH_OFFSET_DAYS = 2440588;
+        static constexpr int64_t MICROS_IN_DAY = 86400000000;
+        static constexpr int64_t NANOS_PER_MICROSECOND = 1000;
+        return (julian_day - JULIAN_EPOCH_OFFSET_DAYS) * MICROS_IN_DAY +
+               nanos_of_day / NANOS_PER_MICROSECOND;
+    }
+};
+#pragma pack()
+static_assert(sizeof(DecodedInt96Timestamp) == 12);
+
+Status append_datetimev2_from_epoch_micros(ColumnDateTimeV2::Container& data,
+                                           int64_t timestamp_micros) {
+    static constexpr int64_t MICROS_PER_SECOND = 1000000;
+    static constexpr int64_t MICROS_PER_MINUTE = MICROS_PER_SECOND * 60;
+    static constexpr int64_t MICROS_PER_HOUR = MICROS_PER_MINUTE * 60;
+    static constexpr int64_t MICROS_PER_DAY = MICROS_PER_HOUR * 24;
+    static const int64_t EPOCH_DAYNR = calc_daynr(1970, 1, 1);
+
+    int64_t days_since_epoch = timestamp_micros / MICROS_PER_DAY;
+    int64_t micros_of_day = timestamp_micros % MICROS_PER_DAY;
+    if (micros_of_day < 0) {
+        micros_of_day += MICROS_PER_DAY;
+        --days_since_epoch;
+    }
+
+    const int64_t daynr = EPOCH_DAYNR + days_since_epoch;
+    if (daynr <= 0) {
+        return Status::DataQualityError(
+                "Decoded DATETIMEV2 timestamp is out of range: micros={}, daynr={}",
+                timestamp_micros, daynr);
+    }
+
+    DateV2Value<DateTimeV2ValueType> datetime_value;
+    if (!datetime_value.get_date_from_daynr(static_cast<uint64_t>(daynr))) {
+        return Status::DataQualityError(
+                "Decoded DATETIMEV2 timestamp is out of range: micros={}, daynr={}",
+                timestamp_micros, daynr);
+    }
+
+    const auto hour = static_cast<uint8_t>(micros_of_day / MICROS_PER_HOUR);
+    micros_of_day %= MICROS_PER_HOUR;
+    const auto minute = static_cast<uint8_t>(micros_of_day / MICROS_PER_MINUTE);
+    micros_of_day %= MICROS_PER_MINUTE;
+    const auto second = static_cast<uint16_t>(micros_of_day / MICROS_PER_SECOND);
+    const auto microsecond = static_cast<uint32_t>(micros_of_day % MICROS_PER_SECOND);
+    datetime_value.unchecked_set_time(datetime_value.year(), datetime_value.month(),
+                                      datetime_value.day(), hour, minute, second, microsecond);
+    data.push_back(datetime_value);
+    return Status::OK();
+}
+
+void append_datetimev2_from_utc_epoch_micros(ColumnDateTimeV2::Container& data,
+                                             int64_t timestamp_micros,
+                                             const cctz::time_zone& timezone) {
+    static constexpr int64_t MICROS_PER_SECOND = 1000000;
+
+    int64_t epoch_seconds = timestamp_micros / MICROS_PER_SECOND;
+    int64_t micros_of_second = timestamp_micros % MICROS_PER_SECOND;
+    if (micros_of_second < 0) {
+        micros_of_second += MICROS_PER_SECOND;
+        --epoch_seconds;
+    }
+
+    DateV2Value<DateTimeV2ValueType> datetime_value;
+    datetime_value.from_unixtime(epoch_seconds, timezone);
+    datetime_value.set_microsecond(static_cast<uint32_t>(micros_of_second));
+    data.push_back(datetime_value);
+}
+
+int64_t decoded_timestamp_micros(const DecodedColumnView& view, int64_t value) {
+    if (view.time_unit == DecodedTimeUnit::MILLIS) {
+        return value * 1000;
+    }
+    if (view.time_unit == DecodedTimeUnit::NANOS) {
+        return value / 1000;
+    }
+    return value;
+}
+
+} // namespace
+
 // NOLINTBEGIN(readability-function-size)
 // NOLINTBEGIN(readability-function-cognitive-complexity)
 Status DataTypeDateTimeV2SerDe::from_string_batch(const ColumnString& col_str,
@@ -451,6 +541,64 @@ Status DataTypeDateTimeV2SerDe::read_column_from_arrow(IColumn& column,
     return Status::OK();
 }
 
+Status DataTypeDateTimeV2SerDe::read_column_from_decoded_values(
+        IColumn& column, const DecodedColumnView& view) const {
+    if (view.value_kind != DecodedValueKind::INT64 && view.value_kind != DecodedValueKind::INT96) {
+        return decoded_column_view_handle_conversion_failure(
+                column, view,
+                Status::NotSupported("DATETIMEV2 decoded reader expects INT64 or INT96 source"));
+    }
+    if (view.values == nullptr && decoded_column_view_has_non_null_value(view)) {
+        return Status::Corruption("Decoded value buffer is null for {}", column.get_name());
+    }
+    auto& data = assert_cast<ColumnDateTimeV2&>(column).get_data();
+    const auto old_size = data.size();
+    if (view.value_kind == DecodedValueKind::INT96) {
+        const auto* values = reinterpret_cast<const DecodedInt96Timestamp*>(view.values);
+        for (int64_t row = 0; row < view.row_count; ++row) {
+            if (decoded_column_view_row_is_null(view, row)) {
+                data.push_back(DateV2Value<DateTimeV2ValueType>());
+                continue;
+            }
+            auto st = append_datetimev2_from_epoch_micros(data, values[row].to_timestamp_micros());
+            if (!st.ok()) {
+                if (decoded_column_view_can_null_on_conversion_failure(view)) {
+                    decoded_column_view_insert_null_on_conversion_failure(column, view, row);
+                    continue;
+                }
+                data.resize(old_size);
+                return st;
+            }
+        }
+        return Status::OK();
+    }
+
+    const auto* values = reinterpret_cast<const int64_t*>(view.values);
+    static const auto utc_timezone = cctz::utc_time_zone();
+    const auto& timezone = view.timezone == nullptr ? utc_timezone : *view.timezone;
+    for (int64_t row = 0; row < view.row_count; ++row) {
+        if (decoded_column_view_row_is_null(view, row)) {
+            data.push_back(DateV2Value<DateTimeV2ValueType>());
+            continue;
+        }
+        const int64_t timestamp_micros = decoded_timestamp_micros(view, values[row]);
+        if (view.timestamp_is_adjusted_to_utc) {
+            append_datetimev2_from_utc_epoch_micros(data, timestamp_micros, timezone);
+        } else {
+            auto st = append_datetimev2_from_epoch_micros(data, timestamp_micros);
+            if (!st.ok()) {
+                if (decoded_column_view_can_null_on_conversion_failure(view)) {
+                    decoded_column_view_insert_null_on_conversion_failure(column, view, row);
+                    continue;
+                }
+                data.resize(old_size);
+                return st;
+            }
+        }
+    }
+    return Status::OK();
+}
+
 Status DataTypeDateTimeV2SerDe::write_column_to_mysql_binary(const IColumn& column,
                                                              MysqlRowBinaryBuffer& result,
                                                              int64_t row_idx, bool col_const,

be/src/core/data_type_serde/data_type_datetimev2_serde.h

@@ -88,6 +88,8 @@ class DataTypeDateTimeV2SerDe : public DataTypeNumberSerDe<PrimitiveType::TYPE_D
                                  const cctz::time_zone& ctz) const override;
     Status read_column_from_arrow(IColumn& column, const arrow::Array* arrow_array, int64_t start,
                                   int64_t end, const cctz::time_zone& ctz) const override;
+    Status read_column_from_decoded_values(IColumn& column,
+                                           const DecodedColumnView& view) const override;
 
     Status write_column_to_mysql_binary(const IColumn& column, MysqlRowBinaryBuffer& row_buffer,
                                         int64_t row_idx, bool col_const,

be/src/core/data_type_serde/data_type_datev2_serde.cpp

@@ -27,6 +27,7 @@
 #include "core/data_type/data_type_decimal.h"
 #include "core/data_type/data_type_number.h"
 #include "core/data_type/define_primitive_type.h"
+#include "core/data_type_serde/decoded_column_view.h"
 #include "core/types.h"
 #include "core/value/vdatetime_value.h"
 #include "exprs/function/cast/cast_to_datev2_impl.hpp"
@@ -125,6 +126,29 @@ Status DataTypeDateV2SerDe::read_column_from_arrow(IColumn& column, const arrow:
     return Status::OK();
 }
 
+Status DataTypeDateV2SerDe::read_column_from_decoded_values(IColumn& column,
+                                                            const DecodedColumnView& view) const {
+    if (view.value_kind != DecodedValueKind::INT32) {
+        return decoded_column_view_handle_conversion_failure(
+                column, view, Status::NotSupported("DATEV2 decoded reader expects INT32 source"));
+    }
+    if (view.values == nullptr && decoded_column_view_has_non_null_value(view)) {
+        return Status::Corruption("Decoded value buffer is null for {}", column.get_name());
+    }
+    auto& data = assert_cast<ColumnDateV2&>(column).get_data();
+    const auto* values = reinterpret_cast<const int32_t*>(view.values);
+    for (int64_t row = 0; row < view.row_count; ++row) {
+        if (decoded_column_view_row_is_null(view, row)) {
+            data.push_back(DateV2Value<DateV2ValueType>());
+            continue;
+        }
+        DateV2Value<DateV2ValueType> date_v2;
+        date_v2.get_date_from_daynr(values[row] + date_threshold);
+        data.push_back(date_v2);
+    }
+    return Status::OK();
+}
+
 Status DataTypeDateV2SerDe::write_column_to_mysql_binary(const IColumn& column,
                                                          MysqlRowBinaryBuffer& result,
                                                          int64_t row_idx, bool col_const,

be/src/core/data_type_serde/data_type_datev2_serde.h

@@ -86,6 +86,8 @@ class DataTypeDateV2SerDe : public DataTypeNumberSerDe<PrimitiveType::TYPE_DATEV
                                  const cctz::time_zone& ctz) const override;
     Status read_column_from_arrow(IColumn& column, const arrow::Array* arrow_array, int64_t start,
                                   int64_t end, const cctz::time_zone& ctz) const override;
+    Status read_column_from_decoded_values(IColumn& column,
+                                           const DecodedColumnView& view) const override;
     Status write_column_to_mysql_binary(const IColumn& column, MysqlRowBinaryBuffer& row_buffer,
                                         int64_t row_idx, bool col_const,
                                         const FormatOptions& options) const override;