zhjwpku commented on code in PR #402: URL: https://github.com/apache/iceberg-cpp/pull/402#discussion_r2607120067
########## src/iceberg/expression/residual_evaluator.cc: ########## @@ -0,0 +1,565 @@ +/* + * 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/residual_evaluator.h" + +#include "iceberg/expression/binder.h" +#include "iceberg/expression/expression.h" +#include "iceberg/expression/expression_visitor.h" +#include "iceberg/expression/expressions.h" +#include "iceberg/expression/predicate.h" +#include "iceberg/partition_spec.h" +#include "iceberg/row/struct_like.h" +#include "iceberg/schema.h" +#include "iceberg/schema_internal.h" +#include "iceberg/transform.h" +#include "iceberg/util/checked_cast.h" +#include "iceberg/util/macros.h" + +namespace iceberg { + +class ResidualVisitor : public BoundVisitor<std::shared_ptr<Expression>> { + public: + ResidualVisitor(const std::shared_ptr<PartitionSpec>& spec, + const std::shared_ptr<Schema>& schema, const StructLike& partition_data, + bool case_sensitive) + : spec_(spec), + schema_(schema), + partition_data_(partition_data), + case_sensitive_(case_sensitive) { + ICEBERG_ASSIGN_OR_THROW(auto partition_type_, spec_->PartitionType(*schema)); + partition_schema_ = FromStructType(std::move(*partition_type_), std::nullopt); + } + + Result<std::shared_ptr<Expression>> AlwaysTrue() override { + return Expressions::AlwaysTrue(); + } + + Result<std::shared_ptr<Expression>> AlwaysFalse() override { + return Expressions::AlwaysFalse(); + } + + Result<std::shared_ptr<Expression>> Not( + const std::shared_ptr<Expression>& child_result) override { + return Expressions::Not(child_result); + } + + Result<std::shared_ptr<Expression>> And( + const std::shared_ptr<Expression>& left_result, + const std::shared_ptr<Expression>& right_result) override { + return Expressions::And(left_result, right_result); + } + + Result<std::shared_ptr<Expression>> Or( + const std::shared_ptr<Expression>& left_result, + const std::shared_ptr<Expression>& right_result) override { + return Expressions::Or(left_result, right_result); + } + + Result<std::shared_ptr<Expression>> IsNull( + const std::shared_ptr<Bound>& expr) override { + return IsNullImpl(expr); + } + + Result<std::shared_ptr<Expression>> NotNull( + const std::shared_ptr<Bound>& expr) override { + return NotNullImpl(expr); + } + + Result<std::shared_ptr<Expression>> IsNaN(const std::shared_ptr<Bound>& expr) override { + return IsNaNImpl(expr); + } + + Result<std::shared_ptr<Expression>> NotNaN( + const std::shared_ptr<Bound>& expr) override { + return NotNaNImpl(expr); + } + + Result<std::shared_ptr<Expression>> Lt(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return LtImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> LtEq(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return LtEqImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> Gt(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return GtImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> GtEq(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return GtEqImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> Eq(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return EqImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> NotEq(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return NotEqImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> StartsWith(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return StartsWithImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> NotStartsWith(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return NotStartsWithImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> In( + const std::shared_ptr<Bound>& expr, + const BoundSetPredicate::LiteralSet& literal_set) override { + return InImpl(expr, literal_set); + } + + Result<std::shared_ptr<Expression>> NotIn( + const std::shared_ptr<Bound>& expr, + const BoundSetPredicate::LiteralSet& literal_set) override { + return NotInImpl(expr, literal_set); + } + + Result<std::shared_ptr<Expression>> Predicate( + const std::shared_ptr<BoundPredicate>& pred) override; + + Result<std::shared_ptr<Expression>> Predicate( + const std::shared_ptr<UnboundPredicate>& pred) override { + ICEBERG_ASSIGN_OR_RAISE(auto bound_predicate, pred->Bind(*schema_, case_sensitive_)); + if (bound_predicate->is_bound_predicate()) { + ICEBERG_ASSIGN_OR_RAISE( + auto residual, + Predicate(std::dynamic_pointer_cast<BoundPredicate>(bound_predicate))); + if (residual->is_bound_predicate()) { + // replace inclusive original unbound predicate + return pred; + } + return residual; + } + // if binding didn't result in a Predicate, return the expression + return bound_predicate; + } + + private: + // Helper methods for bound predicates + Result<std::shared_ptr<Expression>> EvaluateBoundPredicate( + const std::shared_ptr<BoundPredicate>& pred); + + Result<std::shared_ptr<Expression>> IsNullImpl(const std::shared_ptr<Bound>& expr); + Result<std::shared_ptr<Expression>> NotNullImpl(const std::shared_ptr<Bound>& expr); + Result<std::shared_ptr<Expression>> IsNaNImpl(const std::shared_ptr<Bound>& expr); + Result<std::shared_ptr<Expression>> NotNaNImpl(const std::shared_ptr<Bound>& expr); + Result<std::shared_ptr<Expression>> LtImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> LtEqImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> GtImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> GtEqImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> EqImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> NotEqImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> InImpl( + const std::shared_ptr<Bound>& expr, + const BoundSetPredicate::LiteralSet& literal_set); + Result<std::shared_ptr<Expression>> NotInImpl( + const std::shared_ptr<Bound>& expr, + const BoundSetPredicate::LiteralSet& literal_set); + Result<std::shared_ptr<Expression>> StartsWithImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> NotStartsWithImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit); + + std::shared_ptr<PartitionSpec> spec_; + std::shared_ptr<Schema> schema_; + std::shared_ptr<Schema> partition_schema_; + const StructLike& partition_data_; + bool case_sensitive_; +}; + +Result<std::shared_ptr<Expression>> ResidualVisitor::IsNullImpl( + const std::shared_ptr<Bound>& expr) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value.IsNull()) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::NotNullImpl( + const std::shared_ptr<Bound>& expr) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value.IsNull()) { + return Expressions::AlwaysFalse(); + } + return Expressions::AlwaysTrue(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::IsNaNImpl( + const std::shared_ptr<Bound>& expr) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value.IsNaN()) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::NotNaNImpl( + const std::shared_ptr<Bound>& expr) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value.IsNaN()) { + return Expressions::AlwaysFalse(); + } + return Expressions::AlwaysTrue(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::LtImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value < lit) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::LtEqImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value <= lit) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::GtImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value > lit) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::GtEqImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value >= lit) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::EqImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value == lit) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::NotEqImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value != lit) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::InImpl( + const std::shared_ptr<Bound>& expr, + const BoundSetPredicate::LiteralSet& literal_set) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (literal_set.contains(value)) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::NotInImpl( + const std::shared_ptr<Bound>& expr, + const BoundSetPredicate::LiteralSet& literal_set) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (literal_set.contains(value)) { + return Expressions::AlwaysFalse(); + } + return Expressions::AlwaysTrue(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::StartsWithImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + + // Both value and literal should be strings + if (!std::holds_alternative<std::string>(value.value()) || + !std::holds_alternative<std::string>(lit.value())) { + return Expressions::AlwaysFalse(); + } + + const auto& str_value = std::get<std::string>(value.value()); + const auto& str_prefix = std::get<std::string>(lit.value()); + if (str_value.starts_with(str_prefix)) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::NotStartsWithImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + + // Both value and literal should be strings + if (!std::holds_alternative<std::string>(value.value()) || + !std::holds_alternative<std::string>(lit.value())) { + return Expressions::AlwaysTrue(); + } + + const auto& str_value = std::get<std::string>(value.value()); + const auto& str_prefix = std::get<std::string>(lit.value()); + if (str_value.starts_with(str_prefix)) { + return Expressions::AlwaysFalse(); + } + return Expressions::AlwaysTrue(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::EvaluateBoundPredicate( + const std::shared_ptr<BoundPredicate>& pred) { + ICEBERG_DCHECK(pred != nullptr, "BoundPredicate cannot be null"); + + switch (pred->kind()) { + case BoundPredicate::Kind::kUnary: { + switch (pred->op()) { + case Expression::Operation::kIsNull: + return IsNullImpl(pred->term()); + case Expression::Operation::kNotNull: + return NotNullImpl(pred->term()); + case Expression::Operation::kIsNan: + return IsNaNImpl(pred->term()); + case Expression::Operation::kNotNan: + return NotNaNImpl(pred->term()); + default: + return InvalidExpression("Invalid operation for BoundUnaryPredicate: {}", + ToString(pred->op())); + } + } + case BoundPredicate::Kind::kLiteral: { + const auto& literal_pred = + internal::checked_cast<const BoundLiteralPredicate&>(*pred); + switch (pred->op()) { + case Expression::Operation::kLt: + return LtImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kLtEq: + return LtEqImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kGt: + return GtImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kGtEq: + return GtEqImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kEq: + return EqImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kNotEq: + return NotEqImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kStartsWith: + return StartsWithImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kNotStartsWith: + return NotStartsWithImpl(pred->term(), literal_pred.literal()); + default: + return InvalidExpression("Invalid operation for BoundLiteralPredicate: {}", + ToString(pred->op())); + } + } + case BoundPredicate::Kind::kSet: { + const auto& set_pred = internal::checked_cast<const BoundSetPredicate&>(*pred); + switch (pred->op()) { + case Expression::Operation::kIn: + return InImpl(pred->term(), set_pred.literal_set()); + case Expression::Operation::kNotIn: + return NotInImpl(pred->term(), set_pred.literal_set()); + default: + return InvalidExpression("Invalid operation for BoundSetPredicate: {}", + ToString(pred->op())); + } + } + } + + return InvalidExpression("Unsupported bound predicate: {}", pred->ToString()); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::Predicate( + const std::shared_ptr<BoundPredicate>& pred) { + // Get the strict projection and inclusive projection of this predicate in partition + // data, then use them to determine whether to return the original predicate. The + // strict projection returns true iff the original predicate would have returned true, + // so the predicate can be eliminated if the strict projection evaluates to true. + // Similarly the inclusive projection returns false iff the original predicate would + // have returned false, so the predicate can also be eliminated if the inclusive + // projection evaluates to false. + + // Get the field ID from the predicate's reference + const auto& ref = pred->reference(); + int32_t field_id = ref->field().field_id(); + + // Find partition fields that match this source field ID + std::vector<const PartitionField*> matching_fields; Review Comment: Add, thanks for the reminder. ########## src/iceberg/expression/residual_evaluator.cc: ########## @@ -0,0 +1,565 @@ +/* + * 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/residual_evaluator.h" + +#include "iceberg/expression/binder.h" +#include "iceberg/expression/expression.h" +#include "iceberg/expression/expression_visitor.h" +#include "iceberg/expression/expressions.h" +#include "iceberg/expression/predicate.h" +#include "iceberg/partition_spec.h" +#include "iceberg/row/struct_like.h" +#include "iceberg/schema.h" +#include "iceberg/schema_internal.h" +#include "iceberg/transform.h" +#include "iceberg/util/checked_cast.h" +#include "iceberg/util/macros.h" + +namespace iceberg { + +class ResidualVisitor : public BoundVisitor<std::shared_ptr<Expression>> { + public: + ResidualVisitor(const std::shared_ptr<PartitionSpec>& spec, + const std::shared_ptr<Schema>& schema, const StructLike& partition_data, + bool case_sensitive) + : spec_(spec), + schema_(schema), + partition_data_(partition_data), + case_sensitive_(case_sensitive) { + ICEBERG_ASSIGN_OR_THROW(auto partition_type_, spec_->PartitionType(*schema)); + partition_schema_ = FromStructType(std::move(*partition_type_), std::nullopt); + } + + Result<std::shared_ptr<Expression>> AlwaysTrue() override { + return Expressions::AlwaysTrue(); + } + + Result<std::shared_ptr<Expression>> AlwaysFalse() override { + return Expressions::AlwaysFalse(); + } + + Result<std::shared_ptr<Expression>> Not( + const std::shared_ptr<Expression>& child_result) override { + return Expressions::Not(child_result); + } + + Result<std::shared_ptr<Expression>> And( + const std::shared_ptr<Expression>& left_result, + const std::shared_ptr<Expression>& right_result) override { + return Expressions::And(left_result, right_result); + } + + Result<std::shared_ptr<Expression>> Or( + const std::shared_ptr<Expression>& left_result, + const std::shared_ptr<Expression>& right_result) override { + return Expressions::Or(left_result, right_result); + } + + Result<std::shared_ptr<Expression>> IsNull( + const std::shared_ptr<Bound>& expr) override { + return IsNullImpl(expr); + } + + Result<std::shared_ptr<Expression>> NotNull( + const std::shared_ptr<Bound>& expr) override { + return NotNullImpl(expr); + } + + Result<std::shared_ptr<Expression>> IsNaN(const std::shared_ptr<Bound>& expr) override { + return IsNaNImpl(expr); + } + + Result<std::shared_ptr<Expression>> NotNaN( + const std::shared_ptr<Bound>& expr) override { + return NotNaNImpl(expr); + } + + Result<std::shared_ptr<Expression>> Lt(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return LtImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> LtEq(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return LtEqImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> Gt(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return GtImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> GtEq(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return GtEqImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> Eq(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return EqImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> NotEq(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return NotEqImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> StartsWith(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return StartsWithImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> NotStartsWith(const std::shared_ptr<Bound>& expr, + const Literal& lit) override { + return NotStartsWithImpl(expr, lit); + } + + Result<std::shared_ptr<Expression>> In( + const std::shared_ptr<Bound>& expr, + const BoundSetPredicate::LiteralSet& literal_set) override { + return InImpl(expr, literal_set); + } + + Result<std::shared_ptr<Expression>> NotIn( + const std::shared_ptr<Bound>& expr, + const BoundSetPredicate::LiteralSet& literal_set) override { + return NotInImpl(expr, literal_set); + } + + Result<std::shared_ptr<Expression>> Predicate( + const std::shared_ptr<BoundPredicate>& pred) override; + + Result<std::shared_ptr<Expression>> Predicate( + const std::shared_ptr<UnboundPredicate>& pred) override { + ICEBERG_ASSIGN_OR_RAISE(auto bound_predicate, pred->Bind(*schema_, case_sensitive_)); + if (bound_predicate->is_bound_predicate()) { + ICEBERG_ASSIGN_OR_RAISE( + auto residual, + Predicate(std::dynamic_pointer_cast<BoundPredicate>(bound_predicate))); + if (residual->is_bound_predicate()) { + // replace inclusive original unbound predicate + return pred; + } + return residual; + } + // if binding didn't result in a Predicate, return the expression + return bound_predicate; + } + + private: + // Helper methods for bound predicates + Result<std::shared_ptr<Expression>> EvaluateBoundPredicate( + const std::shared_ptr<BoundPredicate>& pred); + + Result<std::shared_ptr<Expression>> IsNullImpl(const std::shared_ptr<Bound>& expr); + Result<std::shared_ptr<Expression>> NotNullImpl(const std::shared_ptr<Bound>& expr); + Result<std::shared_ptr<Expression>> IsNaNImpl(const std::shared_ptr<Bound>& expr); + Result<std::shared_ptr<Expression>> NotNaNImpl(const std::shared_ptr<Bound>& expr); + Result<std::shared_ptr<Expression>> LtImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> LtEqImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> GtImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> GtEqImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> EqImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> NotEqImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> InImpl( + const std::shared_ptr<Bound>& expr, + const BoundSetPredicate::LiteralSet& literal_set); + Result<std::shared_ptr<Expression>> NotInImpl( + const std::shared_ptr<Bound>& expr, + const BoundSetPredicate::LiteralSet& literal_set); + Result<std::shared_ptr<Expression>> StartsWithImpl(const std::shared_ptr<Bound>& expr, + const Literal& lit); + Result<std::shared_ptr<Expression>> NotStartsWithImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit); + + std::shared_ptr<PartitionSpec> spec_; + std::shared_ptr<Schema> schema_; + std::shared_ptr<Schema> partition_schema_; + const StructLike& partition_data_; + bool case_sensitive_; +}; + +Result<std::shared_ptr<Expression>> ResidualVisitor::IsNullImpl( + const std::shared_ptr<Bound>& expr) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value.IsNull()) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::NotNullImpl( + const std::shared_ptr<Bound>& expr) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value.IsNull()) { + return Expressions::AlwaysFalse(); + } + return Expressions::AlwaysTrue(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::IsNaNImpl( + const std::shared_ptr<Bound>& expr) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value.IsNaN()) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::NotNaNImpl( + const std::shared_ptr<Bound>& expr) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value.IsNaN()) { + return Expressions::AlwaysFalse(); + } + return Expressions::AlwaysTrue(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::LtImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value < lit) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::LtEqImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value <= lit) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::GtImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value > lit) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::GtEqImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value >= lit) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::EqImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value == lit) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::NotEqImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (value != lit) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::InImpl( + const std::shared_ptr<Bound>& expr, + const BoundSetPredicate::LiteralSet& literal_set) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (literal_set.contains(value)) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::NotInImpl( + const std::shared_ptr<Bound>& expr, + const BoundSetPredicate::LiteralSet& literal_set) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + if (literal_set.contains(value)) { + return Expressions::AlwaysFalse(); + } + return Expressions::AlwaysTrue(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::StartsWithImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + + // Both value and literal should be strings + if (!std::holds_alternative<std::string>(value.value()) || + !std::holds_alternative<std::string>(lit.value())) { + return Expressions::AlwaysFalse(); + } + + const auto& str_value = std::get<std::string>(value.value()); + const auto& str_prefix = std::get<std::string>(lit.value()); + if (str_value.starts_with(str_prefix)) { + return Expressions::AlwaysTrue(); + } + return Expressions::AlwaysFalse(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::NotStartsWithImpl( + const std::shared_ptr<Bound>& expr, const Literal& lit) { + ICEBERG_ASSIGN_OR_RAISE(auto value, expr->Evaluate(partition_data_)); + + // Both value and literal should be strings + if (!std::holds_alternative<std::string>(value.value()) || + !std::holds_alternative<std::string>(lit.value())) { + return Expressions::AlwaysTrue(); + } + + const auto& str_value = std::get<std::string>(value.value()); + const auto& str_prefix = std::get<std::string>(lit.value()); + if (str_value.starts_with(str_prefix)) { + return Expressions::AlwaysFalse(); + } + return Expressions::AlwaysTrue(); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::EvaluateBoundPredicate( + const std::shared_ptr<BoundPredicate>& pred) { + ICEBERG_DCHECK(pred != nullptr, "BoundPredicate cannot be null"); + + switch (pred->kind()) { + case BoundPredicate::Kind::kUnary: { + switch (pred->op()) { + case Expression::Operation::kIsNull: + return IsNullImpl(pred->term()); + case Expression::Operation::kNotNull: + return NotNullImpl(pred->term()); + case Expression::Operation::kIsNan: + return IsNaNImpl(pred->term()); + case Expression::Operation::kNotNan: + return NotNaNImpl(pred->term()); + default: + return InvalidExpression("Invalid operation for BoundUnaryPredicate: {}", + ToString(pred->op())); + } + } + case BoundPredicate::Kind::kLiteral: { + const auto& literal_pred = + internal::checked_cast<const BoundLiteralPredicate&>(*pred); + switch (pred->op()) { + case Expression::Operation::kLt: + return LtImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kLtEq: + return LtEqImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kGt: + return GtImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kGtEq: + return GtEqImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kEq: + return EqImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kNotEq: + return NotEqImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kStartsWith: + return StartsWithImpl(pred->term(), literal_pred.literal()); + case Expression::Operation::kNotStartsWith: + return NotStartsWithImpl(pred->term(), literal_pred.literal()); + default: + return InvalidExpression("Invalid operation for BoundLiteralPredicate: {}", + ToString(pred->op())); + } + } + case BoundPredicate::Kind::kSet: { + const auto& set_pred = internal::checked_cast<const BoundSetPredicate&>(*pred); + switch (pred->op()) { + case Expression::Operation::kIn: + return InImpl(pred->term(), set_pred.literal_set()); + case Expression::Operation::kNotIn: + return NotInImpl(pred->term(), set_pred.literal_set()); + default: + return InvalidExpression("Invalid operation for BoundSetPredicate: {}", + ToString(pred->op())); + } + } + } + + return InvalidExpression("Unsupported bound predicate: {}", pred->ToString()); +} + +Result<std::shared_ptr<Expression>> ResidualVisitor::Predicate( + const std::shared_ptr<BoundPredicate>& pred) { + // Get the strict projection and inclusive projection of this predicate in partition + // data, then use them to determine whether to return the original predicate. The + // strict projection returns true iff the original predicate would have returned true, + // so the predicate can be eliminated if the strict projection evaluates to true. + // Similarly the inclusive projection returns false iff the original predicate would + // have returned false, so the predicate can also be eliminated if the inclusive + // projection evaluates to false. + + // Get the field ID from the predicate's reference + const auto& ref = pred->reference(); + int32_t field_id = ref->field().field_id(); + + // Find partition fields that match this source field ID + std::vector<const PartitionField*> matching_fields; Review Comment: Added, thanks for the reminder. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. 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