feat: Implement serialize/deserialize for datatypes (#6)

* serialize/deserialize datatypes

* fix timestamptz

* allow whitespace in decimal

* format json

* test for map with int key

* Add apache headers

* Fix clippy warnings

* improve Dispay of decimal and fixed type

* Update datatype documentation

Co-authored-by: Renjie Liu <[email protected]>

* rename index in structtype getter

* add serialization to tests

* make structtype fields private

* implement Display for StructType,StructField

* fix display structtype

* remove dependencies

---------

Co-authored-by: Renjie Liu <[email protected]>

Author: JanKaul

Cargo.toml

@@ -27,3 +27,9 @@ license = "Apache-2.0"
 keywords = ["iceberg"]
 
 [dependencies]
+apache-avro = "0.15.0"
+serde = "^1.0"
+serde_bytes = "0.11.8"
+serde_json = "^1.0"
+serde_derive = "^1.0"
+thiserror = "1.0.44"

src/error.rs

@@ -0,0 +1,28 @@
+// 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.
+
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum IcebergError {
+    #[error("The type `{0}` cannot be stored as bytes.")]
+    ValueByteConversion(String),
+    #[error("Failed to convert slice to array")]
+    TryFromSlice(#[from] std::array::TryFromSliceError),
+    #[error("Failed to convert u8 to string")]
+    Utf8(#[from] std::str::Utf8Error),
+}

src/lib.rs

@@ -16,3 +16,5 @@
 // under the License.
 
 //! Native Rust implementation of Apache Iceberg
+pub mod error;
+pub mod spec;