feat: Introduce basic file scan planning. (#129)

* Code complete

* Resolve

* Done

* Fix comments

* Fix comments

* Fix comments

* Fix

* Fix comment

Author: liurenjie1024

Cargo.toml

@@ -59,3 +59,4 @@ typed-builder = "^0.18"
 url = "2"
 urlencoding = "2"
 uuid = "1.6.1"
+tera = "1"

crates/iceberg/Cargo.toml

@@ -62,4 +62,5 @@ uuid = { workspace = true }
 [dev-dependencies]
 pretty_assertions = { workspace = true }
 tempfile = { workspace = true }
+tera = { workspace = true }
 tokio = { workspace = true }

crates/iceberg/src/error.rs

@@ -325,6 +325,8 @@ define_from_err!(
     "Failed to convert decimal literal to rust decimal"
 );
 
+define_from_err!(std::io::Error, ErrorKind::Unexpected, "IO Operation failed");
+
 /// Helper macro to check arguments.
 ///
 ///

crates/iceberg/src/lib.rs

@@ -45,6 +45,8 @@ mod avro;
 pub mod io;
 pub mod spec;
 
+mod scan;
+
 #[allow(dead_code)]
 pub mod expr;
 pub mod transaction;