feat: add manifest evaluator

src/iceberg/CMakeLists.txt

@@ -27,6 +27,7 @@ set(ICEBERG_SOURCES
     expression/expressions.cc
     expression/inclusive_metrics_evaluator.cc
     expression/literal.cc
+    expression/manifest_evaluator.cc
     expression/predicate.cc
     expression/rewrite_not.cc
     expression/strict_metrics_evaluator.cc

src/iceberg/expression/manifest_evaluator.cc

@@ -0,0 +1,384 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include "iceberg/expression/manifest_evaluator.h"
+
+#include "iceberg/expression/binder.h"
+#include "iceberg/expression/expression_visitor.h"
+#include "iceberg/expression/rewrite_not.h"
+#include "iceberg/manifest/manifest_list.h"
+#include "iceberg/row/struct_like.h"
+#include "iceberg/schema.h"
+#include "iceberg/util/macros.h"
+
+namespace iceberg {
+
+namespace {
+constexpr bool kRowsMightMatch = true;
+constexpr bool kRowCannotMatch = false;
+constexpr int32_t kInPredicateLimit = 200;
+}  // namespace
+
+class ManifestEvalVisitor : public BoundVisitor<bool> {
+ public:
+  explicit ManifestEvalVisitor(const ManifestFile& manifest)
+      : stats_(manifest.partitions) {}
+
+  Result<bool> AlwaysTrue() override { return kRowsMightMatch; }
+
+  Result<bool> AlwaysFalse() override { return kRowCannotMatch; }
+
+  Result<bool> Not(bool child_result) override { return !child_result; }
+
+  Result<bool> And(bool left_result, bool right_result) override {
+    return left_result && right_result;
+  }
+
+  Result<bool> Or(bool left_result, bool right_result) override {
+    return left_result || right_result;
+  }
+
+  Result<bool> IsNull(const std::shared_ptr<Bound>& expr) override {
+    // no need to check whether the field is required because binding evaluates that case
+    // if the column has no null values, the expression cannot match
+    const auto& ref = expr->reference();
+    ICEBERG_ASSIGN_OR_RAISE(auto pos, GetPosition(*ref));
+    if (!stats_.at(pos).contains_null) {
+      return kRowCannotMatch;
+    }
+
+    return kRowsMightMatch;
+  }
+
+  Result<bool> NotNull(const std::shared_ptr<Bound>& expr) override {
+    const auto& ref = expr->reference();
+    ICEBERG_ASSIGN_OR_RAISE(auto pos, GetPosition(*ref));
+    if (AllValuesAreNull(stats_.at(pos), ref->type()->type_id())) {
+      return kRowCannotMatch;
+    }
+
+    return kRowsMightMatch;
+  }
+
+  Result<bool> IsNaN(const std::shared_ptr<Bound>& expr) override {
+    const auto& ref = expr->reference();
+    ICEBERG_ASSIGN_OR_RAISE(auto pos, GetPosition(*ref));
+    if (stats_.at(pos).contains_nan.has_value() && !stats_.at(pos).contains_nan.value()) {
+      return kRowCannotMatch;
+    }
+    if (AllValuesAreNull(stats_.at(pos), ref->type()->type_id())) {
+      return kRowCannotMatch;
+    }
+
+    return kRowsMightMatch;
+  }
+
+  Result<bool> NotNaN(const std::shared_ptr<Bound>& expr) override {
+    const auto& ref = expr->reference();
+    ICEBERG_ASSIGN_OR_RAISE(auto pos, GetPosition(*ref));
+    const auto& summary = stats_.at(pos);
+    // if containsNaN is true, containsNull is false and lowerBound is null, all values
+    // are NaN
+    if (summary.contains_nan.has_value() && summary.contains_nan.value() &&
+        !summary.contains_null && !summary.lower_bound.has_value()) {
+      return kRowCannotMatch;
+    }
+
+    return kRowsMightMatch;
+  }
+
+  Result<bool> Lt(const std::shared_ptr<Bound>& expr, const Literal& lit) override {
+    const auto& ref = expr->reference();
+    ICEBERG_ASSIGN_OR_RAISE(auto pos, GetPosition(*ref));
+    const auto& summary = stats_.at(pos);
+    if (!summary.lower_bound.has_value()) {
+      return kRowCannotMatch;  // values are all null
+    }
+    ICEBERG_ASSIGN_OR_RAISE(
+        auto lower, DeserializeBoundLiteral(summary.lower_bound.value(), ref->type()));
+    if (lower >= lit) {
+      return kRowCannotMatch;
+    }
+    return kRowsMightMatch;
+  }
+
+  Result<bool> LtEq(const std::shared_ptr<Bound>& expr, const Literal& lit) override {
+    const auto& ref = expr->reference();
+    ICEBERG_ASSIGN_OR_RAISE(auto pos, GetPosition(*ref));
+    const auto& summary = stats_.at(pos);
+    if (!summary.lower_bound.has_value()) {
+      return kRowCannotMatch;  // values are all null
+    }
+    ICEBERG_ASSIGN_OR_RAISE(
+        auto lower, DeserializeBoundLiteral(summary.lower_bound.value(), ref->type()));
+    if (lower > lit) {
+      return kRowCannotMatch;
+    }
+    return kRowsMightMatch;
+  }
+
+  Result<bool> Gt(const std::shared_ptr<Bound>& expr, const Literal& lit) override {
+    const auto& ref = expr->reference();
+    ICEBERG_ASSIGN_OR_RAISE(auto pos, GetPosition(*ref));
+    const auto& summary = stats_.at(pos);
+    if (!summary.upper_bound.has_value()) {
+      return kRowCannotMatch;  // values are all null
+    }
+    ICEBERG_ASSIGN_OR_RAISE(
+        auto upper, DeserializeBoundLiteral(summary.upper_bound.value(), ref->type()));
+    if (upper <= lit) {
+      return kRowCannotMatch;
+    }
+    return kRowsMightMatch;
+  }
+
+  Result<bool> GtEq(const std::shared_ptr<Bound>& expr, const Literal& lit) override {
+    const auto& ref = expr->reference();
+    ICEBERG_ASSIGN_OR_RAISE(auto pos, GetPosition(*ref));
+    const auto& summary = stats_.at(pos);
+    if (!summary.upper_bound.has_value()) {
+      return kRowCannotMatch;  // values are all null
+    }
+    ICEBERG_ASSIGN_OR_RAISE(
+        auto upper,
+        DeserializeBoundLiteral(summary.upper_bound.value(), expr->reference()->type()));
+    if (upper < lit) {
+      return kRowCannotMatch;
+    }
+    return kRowsMightMatch;
+  }
+
+  Result<bool> Eq(const std::shared_ptr<Bound>& expr, const Literal& lit) override {
+    const auto& ref = expr->reference();
+    ICEBERG_ASSIGN_OR_RAISE(auto pos, GetPosition(*ref));
+    const auto& summary = stats_.at(pos);
+    if (!summary.lower_bound.has_value() || !summary.upper_bound.has_value()) {
+      return kRowCannotMatch;  // values are all null and literal cannot contain null
+    }
+    ICEBERG_ASSIGN_OR_RAISE(
+        auto lower, DeserializeBoundLiteral(summary.lower_bound.value(), ref->type()));
+    if (lower > lit) {
+      return kRowCannotMatch;
+    }
+
+    ICEBERG_ASSIGN_OR_RAISE(
+        auto upper, DeserializeBoundLiteral(summary.upper_bound.value(), ref->type()));
+    if (upper < lit) {
+      return kRowCannotMatch;
+    }
+
+    return kRowsMightMatch;
+  }
+
+  Result<bool> NotEq(const std::shared_ptr<Bound>& expr, const Literal& lit) override {
+    // because the bounds are not necessarily a min or max value, this cannot be answered
+    // using them. notEq(col, X) with (X, Y) doesn't guarantee that X is a value in col.
+    return kRowsMightMatch;
+  }
+
+  Result<bool> In(const std::shared_ptr<Bound>& expr,
+                  const BoundSetPredicate::LiteralSet& literal_set) override {
+    const auto& ref = expr->reference();
+    ICEBERG_ASSIGN_OR_RAISE(auto pos, GetPosition(*ref));
+    const auto& summary = stats_.at(pos);
+    if (!summary.lower_bound.has_value() || !summary.upper_bound.has_value()) {
+      // values are all null and literalSet cannot contain null.
+      return kRowCannotMatch;
+    }
+    if (literal_set.size() > kInPredicateLimit) {
+      // skip evaluating the predicate if the number of values is too big
+      return kRowsMightMatch;
+    }
+
+    ICEBERG_ASSIGN_OR_RAISE(
+        auto lower, DeserializeBoundLiteral(summary.lower_bound.value(), ref->type()));
+    ICEBERG_ASSIGN_OR_RAISE(
+        auto upper, DeserializeBoundLiteral(summary.upper_bound.value(), ref->type()));
+
+    if (std::ranges::all_of(literal_set, [&](const Literal& lit) {
+          return lit < lower || lit > upper;
+        })) {
+      // if all values are less than lower bound or greater than upper bound,
+      // rows cannot match.
+      return kRowCannotMatch;
+    }
+    return kRowsMightMatch;
+  }
+
+  Result<bool> NotIn(const std::shared_ptr<Bound>& expr,
+                     const BoundSetPredicate::LiteralSet& literal_set) override {
+    // because the bounds are not necessarily a min or max value, this cannot be answered
+    // using them. notIn(col, {X, ...}) with (X, Y) doesn't guarantee that X is a value in
+    // col.
+    return kRowsMightMatch;
+  }
+
+  Result<bool> StartsWith(const std::shared_ptr<Bound>& expr,
+                          const Literal& lit) override {
+    const auto& ref = expr->reference();
+    ICEBERG_ASSIGN_OR_RAISE(auto pos, GetPosition(*ref));
+    const auto& summary = stats_.at(pos);
+    if (!summary.lower_bound.has_value() || !summary.upper_bound.has_value()) {
+      return kRowCannotMatch;
+    }
+    if (lit.type()->type_id() != TypeId::kString) {
+      return InvalidExpression("Invalid literal: not a string, cannot use StartsWith");
+    }
+    const auto& prefix = std::get<std::string>(lit.value());
+    ICEBERG_ASSIGN_OR_RAISE(
+        auto lower, DeserializeBoundLiteral(summary.lower_bound.value(), ref->type()));
+    ICEBERG_ASSIGN_OR_RAISE(
+        auto upper, DeserializeBoundLiteral(summary.upper_bound.value(), ref->type()));
+    const auto& lower_bound = std::get<std::string>(lower.value());
+    const auto& upper_bound = std::get<std::string>(upper.value());
+    // truncate lower bound so that its length in bytes is not greater than the length of
+    // prefix
+    size_t length = std::min(prefix.size(), lower_bound.size());
+    if (lower_bound.substr(0, length) > prefix) {
+      return kRowCannotMatch;
+    }
+    length = std::min(prefix.size(), upper_bound.size());
+    if (upper_bound.substr(0, length) < prefix) {
+      return kRowCannotMatch;
+    }
+    return kRowsMightMatch;
+  }
+
+  Result<bool> NotStartsWith(const std::shared_ptr<Bound>& expr,
+                             const Literal& lit) override {
+    const auto& ref = expr->reference();
+    ICEBERG_ASSIGN_OR_RAISE(auto pos, GetPosition(*ref));
+    const auto& summary = stats_.at(pos);
+    if (summary.contains_null || !summary.lower_bound.has_value() ||
+        !summary.upper_bound.has_value()) {
+      return kRowsMightMatch;
+    }
+    if (lit.type()->type_id() != TypeId::kString) {
+      return InvalidExpression("Invalid literal: not a string, cannot use notStartsWith");
+    }
+    // notStartsWith will match unless all values must start with the prefix. This happens
+    // when the lower and upper bounds both start with the prefix.
+    const auto& prefix = std::get<std::string>(lit.value());
+    ICEBERG_ASSIGN_OR_RAISE(
+        auto lower, DeserializeBoundLiteral(summary.lower_bound.value(), ref->type()));
+    ICEBERG_ASSIGN_OR_RAISE(
+        auto upper, DeserializeBoundLiteral(summary.upper_bound.value(), ref->type()));
+    const auto& lower_bound = std::get<std::string>(lower.value());
+    const auto& upper_bound = std::get<std::string>(upper.value());
+
+    // if lower is shorter than the prefix, it can't start with the prefix
+    if (lower_bound.size() < prefix.size()) {
+      return kRowsMightMatch;
+    }
+    if (lower_bound.starts_with(prefix)) {
+      // the lower bound starts with the prefix; check the upper bound
+      // if upper is shorter than the prefix, it can't start with the prefix
+      if (upper_bound.size() < prefix.size()) {
+        return kRowsMightMatch;
+      }
+      // truncate upper bound so that its length in bytes is not greater than the length
+      // of prefix
+      if (upper_bound.starts_with(prefix)) {
+        return kRowCannotMatch;
+      }
+    }
+    return kRowsMightMatch;
+  }
+
+ private:
+  Result<size_t> GetPosition(const BoundReference& ref) const {
+    const auto& accessor = ref.accessor();
+    const auto& position_path = accessor.position_path();
+    if (position_path.empty()) {
+      return InvalidArgument("Invalid accessor: empty position path.");
+    }
+    // nested accessors are not supported for partition fields
+    if (position_path.size() > 1) {
+      return InvalidArgument("Cannot convert nested accessor to position");
+    }
+    auto pos = position_path.at(0);
+    if (pos >= stats_.size()) {
+      return InvalidArgument("Position {} is out of partition field range {}", pos,
+                             stats_.size());
+    }
+    return pos;
+  }
+
+  bool AllValuesAreNull(const PartitionFieldSummary& summary, TypeId typeId) {
+    // containsNull encodes whether at least one partition value is null,
+    // lowerBound is null if all partition values are null
+    bool allNull = summary.contains_null && !summary.lower_bound.has_value();
+
+    if (allNull && (typeId == TypeId::kDouble || typeId == TypeId::kFloat)) {
+      // floating point types may include NaN values, which we check separately.
+      // In case bounds don't include NaN value, containsNaN needs to be checked against.
+      allNull = summary.contains_nan.has_value() && !summary.contains_nan.value();
+    }
+    return allNull;
+  }
+
+  Result<Literal> DeserializeBoundLiteral(const std::vector<uint8_t>& bound,
+                                          const std::shared_ptr<Type>& type) const {
+    if (!type->is_primitive()) {
+      return NotSupported("Bounds of non-primitive partition fields are not supported.");
+    }
+    return Literal::Deserialize(
+        bound, std::move(internal::checked_pointer_cast<PrimitiveType>(type)));
+  }
+
+ private:
+  const std::vector<PartitionFieldSummary>& stats_;
+};
+
+ManifestEvaluator::ManifestEvaluator(std::shared_ptr<Expression> expr)
+    : expr_(std::move(expr)) {}
+
+ManifestEvaluator::~ManifestEvaluator() = default;
+
+Result<std::unique_ptr<ManifestEvaluator>> ManifestEvaluator::MakeRowFilter(
+    [[maybe_unused]] std::shared_ptr<Expression> expr,
+    [[maybe_unused]] const std::shared_ptr<PartitionSpec>& spec,
+    [[maybe_unused]] const Schema& schema, [[maybe_unused]] bool case_sensitive) {
+  // TODO(xiao.dong) we need a projection util to project row filter to the partition col
+  return NotImplemented("ManifestEvaluator::MakeRowFilter");
+}
+
+Result<std::unique_ptr<ManifestEvaluator>> ManifestEvaluator::MakePartitionFilter(
+    std::shared_ptr<Expression> expr, const std::shared_ptr<PartitionSpec>& spec,
+    const Schema& schema, bool case_sensitive) {
+  ICEBERG_ASSIGN_OR_RAISE(auto partition_type, spec->PartitionType(schema));
+  auto field_span = partition_type->fields();
+  std::vector<SchemaField> fields(field_span.begin(), field_span.end());
+  auto partition_schema = std::make_shared<Schema>(fields);
+  ICEBERG_ASSIGN_OR_RAISE(auto rewrite_expr, RewriteNot::Visit(std::move(expr)));
+  ICEBERG_ASSIGN_OR_RAISE(auto partition_expr,
+                          Binder::Bind(*partition_schema, rewrite_expr, case_sensitive));
+  return std::unique_ptr<ManifestEvaluator>(
+      new ManifestEvaluator(std::move(partition_expr)));
+}
+
+Result<bool> ManifestEvaluator::Evaluate(const ManifestFile& manifest) const {
+  if (manifest.partitions.empty()) {
+    return kRowsMightMatch;
+  }
+  ManifestEvalVisitor visitor(manifest);
+  return Visit<bool, ManifestEvalVisitor>(expr_, visitor);
+}
+
+}  // namespace iceberg