feat: add some misc getters required for manifest evaluation

Author: sdd

Cargo.toml

@@ -47,7 +47,7 @@ aws-sdk-glue = "1.21.0"
 bimap = "0.6"
 bitvec = "1.0.1"
 bytes = "1.5"
-chrono = "0.4.34"
+chrono = "~0.4.34"
 derive_builder = "0.20.0"
 either = "1"
 env_logger = "0.11.0"

crates/iceberg/src/expr/predicate.rs

@@ -46,7 +46,7 @@ impl<T: Debug, const N: usize> Debug for LogicalExpression<T, N> {
 }
 
 impl<T, const N: usize> LogicalExpression<T, N> {
-    fn new(inputs: [Box<T>; N]) -> Self {
+    pub(crate) fn new(inputs: [Box<T>; N]) -> Self {
         Self { inputs }
     }
 

crates/iceberg/src/spec/manifest.rs

@@ -101,6 +101,11 @@ impl Manifest {
             entries: entries.into_iter().map(Arc::new).collect(),
         }
     }
+
+    /// Get the ID for this Manifest's partition_spec [`PartitionSpec`]
+    pub fn partition_spec_id(&self) -> i32 {
+        self.metadata.partition_spec.spec_id
+    }
 }
 
 /// A manifest writer.
@@ -868,6 +873,11 @@ impl ManifestEntry {
         &self.data_file.file_path
     }
 
+    /// Get a reference to the Partition Struct of the data file of this manifest entry
+    pub fn get_partition_struct(&self) -> &Struct {
+        &self.data_file.partition
+    }
+
     /// Inherit data from manifest list, such as snapshot id, sequence number.
     pub(crate) fn inherit_data(&mut self, snapshot_entry: &ManifestFile) {
         if self.snapshot_id.is_none() {