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[GitHub] [arrow-datafusion] thomas-k-cameron opened a new pull request, #2969: Example to show how to convert query result into rust struct #2959
thomas-k-cameron opened a new pull request, #2969:
URL: https://github.com/apache/arrow-datafusion/pull/2969
# Which issue does this PR close?
Closes #2959 .
# Rationale for this change
Add an example that shows how to convert query result into rust struct.
Details/Background in the issue.
# What changes are included in this PR?
New example.
# Are there any user-facing changes?
No.
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[GitHub] [arrow-datafusion] xudong963 merged pull request #2969: Example that shows how to convert query result into rust struct #2959
Posted by GitBox <gi...@apache.org>.
xudong963 merged PR #2969:
URL: https://github.com/apache/arrow-datafusion/pull/2969
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[GitHub] [arrow-datafusion] ursabot commented on pull request #2969: Example that shows how to convert query result into rust struct #2959
Posted by GitBox <gi...@apache.org>.
ursabot commented on PR #2969:
URL: https://github.com/apache/arrow-datafusion/pull/2969#issuecomment-1196647435
Benchmark runs are scheduled for baseline = 884101e106c580c518409a8685c36d0c48c1403b and contender = e47c4eb1ac8a5c3c07a0ed2bad74ecd6509bae7b. e47c4eb1ac8a5c3c07a0ed2bad74ecd6509bae7b is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Skipped :warning: Benchmarking of arrow-datafusion-commits is not supported on ec2-t3-xlarge-us-east-2] [ec2-t3-xlarge-us-east-2](https://conbench.ursa.dev/compare/runs/abca3262ede14dcda5786f1e75edc856...b1f3bb703691492cbc23f880d7bf95a7/)
[Skipped :warning: Benchmarking of arrow-datafusion-commits is not supported on test-mac-arm] [test-mac-arm](https://conbench.ursa.dev/compare/runs/4be9a2c8803648659167552d46a12549...bb159ddf978241edbbc971ddb8ef70c1/)
[Skipped :warning: Benchmarking of arrow-datafusion-commits is not supported on ursa-i9-9960x] [ursa-i9-9960x](https://conbench.ursa.dev/compare/runs/37ab1da8b5b246a295e5ddfa92c1b9a7...e4e477d00e264d3ca20ca1f21b232c04/)
[Skipped :warning: Benchmarking of arrow-datafusion-commits is not supported on ursa-thinkcentre-m75q] [ursa-thinkcentre-m75q](https://conbench.ursa.dev/compare/runs/95edb7f53eda4c8ba7414b73a34ff328...9b14d8dc0da1491384e198ec054ac3d8/)
Buildkite builds:
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java
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[GitHub] [arrow-datafusion] codecov-commenter commented on pull request #2969: Example that shows how to convert query result into rust struct #2959
Posted by GitBox <gi...@apache.org>.
codecov-commenter commented on PR #2969:
URL: https://github.com/apache/arrow-datafusion/pull/2969#issuecomment-1196556468
# [Codecov](https://codecov.io/gh/apache/arrow-datafusion/pull/2969?src=pr&el=h1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=The+Apache+Software+Foundation) Report
> Merging [#2969](https://codecov.io/gh/apache/arrow-datafusion/pull/2969?src=pr&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=The+Apache+Software+Foundation) (d94c8be) into [master](https://codecov.io/gh/apache/arrow-datafusion/commit/4005076d8e3e4fa07541da62f7a6c9c755029da1?el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=The+Apache+Software+Foundation) (4005076) will **decrease** coverage by `0.00%`.
> The diff coverage is `n/a`.
```diff
@@ Coverage Diff @@
## master #2969 +/- ##
==========================================
- Coverage 85.71% 85.71% -0.01%
==========================================
Files 280 280
Lines 51313 51313
==========================================
- Hits 43983 43982 -1
- Misses 7330 7331 +1
```
| [Impacted Files](https://codecov.io/gh/apache/arrow-datafusion/pull/2969?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=The+Apache+Software+Foundation) | Coverage Δ | |
|---|---|---|
| [datafusion/expr/src/logical\_plan/plan.rs](https://codecov.io/gh/apache/arrow-datafusion/pull/2969/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=The+Apache+Software+Foundation#diff-ZGF0YWZ1c2lvbi9leHByL3NyYy9sb2dpY2FsX3BsYW4vcGxhbi5ycw==) | `77.43% <0.00%> (-0.35%)` | :arrow_down: |
| [datafusion/expr/src/window\_frame.rs](https://codecov.io/gh/apache/arrow-datafusion/pull/2969/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=The+Apache+Software+Foundation#diff-ZGF0YWZ1c2lvbi9leHByL3NyYy93aW5kb3dfZnJhbWUucnM=) | `93.27% <0.00%> (+0.84%)` | :arrow_up: |
Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=The+Apache+Software+Foundation).
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[GitHub] [arrow-datafusion] alamb commented on a diff in pull request #2969: Example that shows how to convert query result into rust struct #2959
Posted by GitBox <gi...@apache.org>.
alamb commented on code in PR #2969:
URL: https://github.com/apache/arrow-datafusion/pull/2969#discussion_r930957504
##########
datafusion-examples/examples/deserialize_to_struct.rs:
##########
@@ -0,0 +1,75 @@
+// 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 datafusion::error::Result;
+use datafusion::prelude::*;
+use serde::Deserialize;
+
+/// This example shows that it is possible to convert query results into Rust structs .
+/// It will collect the query results into RecordBatch, then convert it to serde_json::Value.
+/// Then, serde_json::Value is turned into Rust's struct.
+/// Any datatype with `Deserialize` implemeneted works.
+#[tokio::main]
+async fn main() -> Result<()> {
+ let data_list = Data::new().await?;
+ println!("{:#?}", data_list);
+ Ok(())
+}
+
+#[derive(Deserialize, Debug)]
+struct Data {
+ #[allow(dead_code)]
+ int_col: i64,
+ #[allow(dead_code)]
+ double_col: f64,
+}
+
+impl Data {
+ pub async fn new() -> Result<Vec<Self>> {
+ // this group is almost the same as the one you find it in parquet_sql.rs
+ let batches = {
+ let ctx = SessionContext::new();
+
+ let testdata = datafusion::test_util::parquet_test_data();
+
+ ctx.register_parquet(
+ "alltypes_plain",
+ &format!("{}/alltypes_plain.parquet", testdata),
+ ParquetReadOptions::default(),
+ )
+ .await?;
+
+ let df = ctx
+ .sql("SELECT int_col, double_col FROM alltypes_plain")
+ .await?;
+
+ df.show().await?;
+
+ df.collect().await?
+ };
+ // converts it to serde_json type and then convert that into Rust type
+ let list =
Review Comment:
👍 this is very cool
##########
datafusion-examples/examples/deserialize_to_struct.rs:
##########
@@ -0,0 +1,75 @@
+// 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 datafusion::error::Result;
+use datafusion::prelude::*;
+use serde::Deserialize;
+
+/// This example shows that it is possible to convert query results into Rust structs .
Review Comment:
👍
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[GitHub] [arrow-datafusion] thomas-k-cameron commented on pull request #2969: Example that shows how to convert query result into rust struct #2959
Posted by GitBox <gi...@apache.org>.
thomas-k-cameron commented on PR #2969:
URL: https://github.com/apache/arrow-datafusion/pull/2969#issuecomment-1196585531
Fixed all the stuff mentioned by the tests
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[GitHub] [arrow-datafusion] thomas-k-cameron commented on a diff in pull request #2969: Example that shows how to convert query result into rust struct #2959
Posted by GitBox <gi...@apache.org>.
thomas-k-cameron commented on code in PR #2969:
URL: https://github.com/apache/arrow-datafusion/pull/2969#discussion_r930963112
##########
datafusion-examples/examples/deserialize_to_struct.rs:
##########
@@ -0,0 +1,75 @@
+// 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 datafusion::error::Result;
+use datafusion::prelude::*;
+use serde::Deserialize;
+
+/// This example shows that it is possible to convert query results into Rust structs .
+/// It will collect the query results into RecordBatch, then convert it to serde_json::Value.
+/// Then, serde_json::Value is turned into Rust's struct.
+/// Any datatype with `Deserialize` implemeneted works.
+#[tokio::main]
+async fn main() -> Result<()> {
+ let data_list = Data::new().await?;
+ println!("{:#?}", data_list);
+ Ok(())
+}
+
+#[derive(Deserialize, Debug)]
+struct Data {
+ #[allow(dead_code)]
+ int_col: i64,
+ #[allow(dead_code)]
+ double_col: f64,
+}
+
+impl Data {
+ pub async fn new() -> Result<Vec<Self>> {
+ // this group is almost the same as the one you find it in parquet_sql.rs
+ let batches = {
+ let ctx = SessionContext::new();
+
+ let testdata = datafusion::test_util::parquet_test_data();
+
+ ctx.register_parquet(
+ "alltypes_plain",
+ &format!("{}/alltypes_plain.parquet", testdata),
+ ParquetReadOptions::default(),
+ )
+ .await?;
+
+ let df = ctx
+ .sql("SELECT int_col, double_col FROM alltypes_plain")
+ .await?;
+
+ df.show().await?;
+
+ df.collect().await?
+ };
+ // converts it to serde_json type and then convert that into Rust type
+ let list =
Review Comment:
Thanks :D
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