xiaoyang-sde commented on issue #88:
URL: https://github.com/apache/iceberg-rust/issues/88#issuecomment-1829169593
Hi! I'm learning Apache Iceberg and I think this issue might be a good
starting point to learn about the source code.
I noticed that `PartitionSpec`, `Snapshot`, and `SortOrder` are still using
the `derive_build` macros, and I figured out a solution to migrate them to
`TypedBuilder`.
- `Snapshot` is straightforward:
```diff
-#[derive(Debug, PartialEq, Eq, Clone, Builder, Serialize, Deserialize)]
+#[derive(Debug, PartialEq, Eq, Clone, TypedBuilder, Serialize, Deserialize)]
#[serde(from = "SnapshotV2", into = "SnapshotV2")]
-#[builder(setter(prefix = "with"))]
+#[builder(field_defaults(setter(prefix = "with_")))]
/// A snapshot represents the state of a table at some time and is used to
access the complete set of data files in the table.
pub struct Snapshot {
/// A unique long ID
snapshot_id: i64,
/// The snapshot ID of the snapshot’s parent.
/// Omitted for any snapshot with no parent
- #[builder(default = "None")]
+ #[builder(default = None)]
parent_snapshot_id: Option<i64>,
/// A monotonically increasing long that tracks the order of
/// changes to a table.
@@ -82,7 +83,7 @@ pub struct Snapshot {
/// A string map that summarizes the snapshot changes, including
operation.
summary: Summary,
/// ID of the table’s current schema when the snapshot was created.
- #[builder(setter(strip_option), default = "None")]
+ #[builder(setter(strip_option), default = None)]
schema_id: Option<i64>,
}
```
- `PartitionSpec` is a bit complex, because we need to explicitly define the
`with_fields` and `with_partition_field` methods
```diff
-#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, Clone, Default,
Builder)]
+#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, Clone, Default,
TypedBuilder)]
#[serde(rename_all = "kebab-case")]
-#[builder(setter(prefix = "with"))]
+#[builder(field_defaults(setter(prefix = "with_")))]
/// Partition spec that defines how to produce a tuple of partition values
from a record.
pub struct PartitionSpec {
/// Identifier for PartitionSpec
pub spec_id: i32,
/// Details of the partition spec
- #[builder(setter(each(name = "with_partition_field")))]
- pub fields: Vec<PartitionField>,
+ #[builder(mutators(
+ pub fn with_fields(self, fields: Vec<PartitionField>) {
+ self.fields.extend(fields)
+ }
+
+ pub fn with_partition_field(self, field: PartitionField) {
+ self.fields.push(field)
+ }
+ ), default, via_mutators)]
+ pub fields: Vec<PartitionField>,
}
```
- `SortOrder` is similar to `PartitionSpec`
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