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in repository https://gitbox.apache.org/repos/asf/iceberg-rust.git
The following commit(s) were added to refs/heads/gh-pages by this push:
new a2e9a2833 deploy: e9c22bf7148a2fadd8dc94879371866dea89c883
a2e9a2833 is described below
commit a2e9a28336c6ae26ee24a2e7fd65cc231ca43f00
Author: github-merge-queue[bot]
<github-merge-queue[bot]@users.noreply.github.com>
AuthorDate: Fri Oct 2 10:12:35 2026 +0000
deploy: e9c22bf7148a2fadd8dc94879371866dea89c883
---
.../arrow/record_batch_projector/index.html | 2 +-
.../struct.RecordBatchProjector.html | 4 +-
.../iceberg/arrow/record_batch_projector.rs.html | 498 +++++++++++++--------
3 files changed, 316 insertions(+), 188 deletions(-)
diff --git a/api/iceberg/arrow/record_batch_projector/index.html
b/api/iceberg/arrow/record_batch_projector/index.html
index c7601e769..b83d299b1 100644
--- a/api/iceberg/arrow/record_batch_projector/index.html
+++ b/api/iceberg/arrow/record_batch_projector/index.html
@@ -1,2 +1,2 @@
-<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta
name="viewport" content="width=device-width, initial-scale=1.0"><meta
name="generator" content="rustdoc"><meta name="description"
content="RecordBatch projection
utilities"><title>iceberg::arrow::record_batch_projector -
Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2
[...]
+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta
name="viewport" content="width=device-width, initial-scale=1.0"><meta
name="generator" content="rustdoc"><meta name="description"
content="RecordBatch projection
utilities"><title>iceberg::arrow::record_batch_projector -
Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2
[...]
</div></details><h2 id="structs" class="section-header">Structs<a
href="#structs" class="anchor">§</a></h2><dl class="item-table"><dt><a
class="struct" href="struct.RecordBatchProjector.html" title="struct
iceberg::arrow::record_batch_projector::RecordBatchProjector">Record<wbr>Batch<wbr>Projector</a></dt><dd>Help
to project specific field from `RecordBatch`` according to the fields
id.</dd></dl></section></div></main></body></html>
\ No newline at end of file
diff --git
a/api/iceberg/arrow/record_batch_projector/struct.RecordBatchProjector.html
b/api/iceberg/arrow/record_batch_projector/struct.RecordBatchProjector.html
index 52f9bb7c8..9b9dcd282 100644
--- a/api/iceberg/arrow/record_batch_projector/struct.RecordBatchProjector.html
+++ b/api/iceberg/arrow/record_batch_projector/struct.RecordBatchProjector.html
@@ -1,5 +1,5 @@
<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta
name="viewport" content="width=device-width, initial-scale=1.0"><meta
name="generator" content="rustdoc"><meta name="description" content="Help to
project specific field from `RecordBatch`` according to the fields
id."><title>RecordBatchProjector in iceberg::arrow::record_batch_projector -
Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.tt
[...]
-</div></details><h2 id="implementations"
class="section-header">Implementations<a href="#implementations"
class="anchor">§</a></h2><div id="implementations-list"><details class="toggle
implementors-toggle" open><summary><section id="impl-RecordBatchProjector"
class="impl"><a class="src rightside"
href="../../../src/iceberg/arrow/record_batch_projector.rs.html#41-198">Source</a><a
href="#impl-RecordBatchProjector" class="anchor">§</a><h3
class="code-header">impl <a class="struct" href="st [...]
+</div></details><h2 id="implementations"
class="section-header">Implementations<a href="#implementations"
class="anchor">§</a></h2><div id="implementations-list"><details class="toggle
implementors-toggle" open><summary><section id="impl-RecordBatchProjector"
class="impl"><a class="src rightside"
href="../../../src/iceberg/arrow/record_batch_projector.rs.html#41-203">Source</a><a
href="#impl-RecordBatchProjector" class="anchor">§</a><h3
class="code-header">impl <a class="struct" href="st [...]
iceberg_schema: <a class="struct"
href="https://doc.rust-lang.org/nightly/alloc/sync/struct.Arc.html"
title="struct alloc::sync::Arc">Arc</a><<a class="struct"
href="../../spec/struct.Schema.html" title="struct
iceberg::spec::Schema">IcebergSchema</a>>,
target_field_ids: &[<a class="primitive"
href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>],
) -> <a class="type" href="../../type.Result.html" title="type
iceberg::Result">Result</a><Self></h4></section></summary><div
class="docblock"><p>Create RecordBatchProjector using Iceberg schema.</p>
@@ -10,7 +10,7 @@ then uses the standard field ID lookup for projection.</p>
<li><code>iceberg_schema</code> - The Iceberg schema for field ID mapping</li>
<li><code>target_field_ids</code> - The field IDs to project</li>
</ul>
-</div></details><details class="toggle method-toggle" open><summary><section
id="method.project_column" class="method"><a class="src rightside"
href="../../../src/iceberg/arrow/record_batch_projector.rs.html#171-176">Source</a><h4
class="code-header">pub fn <a href="#method.project_column"
class="fn">project_column</a>(&self, batch: &[ArrayRef]) -> <a
class="type" href="../../type.Result.html" title="type
iceberg::Result">Result</a><<a class="struct" href="https://doc.rust- [...]
+</div></details><details class="toggle method-toggle" open><summary><section
id="method.project_column" class="method"><a class="src rightside"
href="../../../src/iceberg/arrow/record_batch_projector.rs.html#171-177">Source</a><h4
class="code-header">pub fn <a href="#method.project_column"
class="fn">project_column</a>(&self, batch: &[ArrayRef]) -> <a
class="type" href="../../type.Result.html" title="type
iceberg::Result">Result</a><<a class="struct" href="https://doc.rust- [...]
</div></details></div></details></div><h2 id="trait-implementations"
class="section-header">Trait Implementations<a href="#trait-implementations"
class="anchor">§</a></h2><div id="trait-implementations-list"><details
class="toggle implementors-toggle" open><summary><section
id="impl-Clone-for-RecordBatchProjector" class="impl"><a class="src rightside"
href="../../../src/iceberg/arrow/record_batch_projector.rs.html#31">Source</a><a
href="#impl-Clone-for-RecordBatchProjector" class="anchor [...]
and should not be overridden without very good
reason.</div></details></div></details><section
id="impl-Eq-for-RecordBatchProjector" class="impl"><a class="src rightside"
href="../../../src/iceberg/arrow/record_batch_projector.rs.html#31">Source</a><a
href="#impl-Eq-for-RecordBatchProjector" class="anchor">§</a><h3
class="code-header">impl <a class="trait"
href="https://doc.rust-lang.org/nightly/core/cmp/trait.Eq.html" title="trait
core::cmp::Eq">Eq</a> for <a class="struct" href="struct [...]
T: 'static + ?<a class="trait"
href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html"
title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div
class="impl-items"><details class="toggle method-toggle" open><summary><section
id="method.type_id" class="method trait-impl"><a class="src rightside"
href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#142">Source</a><a
href="#method.type_id" class="anchor">§</a><h4 class="code-header">fn <a href
[...]
diff --git a/api/src/iceberg/arrow/record_batch_projector.rs.html
b/api/src/iceberg/arrow/record_batch_projector.rs.html
index 5682176f1..4ee5d2a1d 100644
--- a/api/src/iceberg/arrow/record_batch_projector.rs.html
+++ b/api/src/iceberg/arrow/record_batch_projector.rs.html
@@ -17,7 +17,7 @@
<a href=#17 id=17 data-nosnippet>17</a>
<a href=#18 id=18 data-nosnippet>18</a></span><span class="kw">use
</span>std::sync::Arc;
<a href=#19 id=19 data-nosnippet>19</a>
-<a href=#20 id=20 data-nosnippet>20</a><span class="kw">use
</span>arrow_array::{ArrayRef, RecordBatch, StructArray, make_array};
+<a href=#20 id=20 data-nosnippet>20</a><span class="kw">use
</span>arrow_array::{Array, ArrayRef, RecordBatch, StructArray, make_array};
<a href=#21 id=21 data-nosnippet>21</a><span class="kw">use
</span>arrow_buffer::NullBuffer;
<a href=#22 id=22 data-nosnippet>22</a><span class="kw">use
</span>arrow_schema::{DataType, Field, FieldRef, Fields, Schema, SchemaRef};
<a href=#23 id=23 data-nosnippet>23</a><span class="kw">use
</span>parquet::arrow::PARQUET_FIELD_ID_META_KEY;
@@ -169,190 +169,318 @@
<a href=#169 id=169 data-nosnippet>169</a>
<a href=#170 id=170 data-nosnippet>170</a> <span class="doccomment">/// Do
projection with columns
<a href=#171 id=171 data-nosnippet>171</a> </span><span class="kw">pub fn
</span>project_column(<span class="kw-2">&</span><span
class="self">self</span>, batch: <span class="kw-2">&</span>[ArrayRef])
-> <span class="prelude-ty">Result</span><Vec<ArrayRef>> {
-<a href=#172 id=172 data-nosnippet>172</a> <span
class="self">self</span>.field_indices
-<a href=#173 id=173 data-nosnippet>173</a> .iter()
-<a href=#174 id=174 data-nosnippet>174</a> .map(|index_vec| <span
class="self">Self</span>::get_column_by_field_index(batch, index_vec))
-<a href=#175 id=175 data-nosnippet>175</a> .collect::<<span
class="prelude-ty">Result</span><Vec<<span
class="kw">_</span>>>>()
-<a href=#176 id=176 data-nosnippet>176</a> }
-<a href=#177 id=177 data-nosnippet>177</a>
-<a href=#178 id=178 data-nosnippet>178</a> <span class="kw">fn
</span>get_column_by_field_index(batch: <span
class="kw-2">&</span>[ArrayRef], field_index: <span
class="kw-2">&</span>[usize]) -> <span
class="prelude-ty">Result</span><ArrayRef> {
-<a href=#179 id=179 data-nosnippet>179</a> <span class="kw">let
</span><span class="kw-2">mut </span>rev_iterator = field_index.iter().rev();
-<a href=#180 id=180 data-nosnippet>180</a> <span class="kw">let
</span><span class="kw-2">mut </span>array = batch[<span
class="kw-2">*</span>rev_iterator.next().unwrap()].clone();
-<a href=#181 id=181 data-nosnippet>181</a> <span class="kw">let
</span><span class="kw-2">mut </span>null_buffer = array.logical_nulls();
-<a href=#182 id=182 data-nosnippet>182</a> <span class="kw">for
</span>idx <span class="kw">in </span>rev_iterator {
-<a href=#183 id=183 data-nosnippet>183</a> array = array
-<a href=#184 id=184 data-nosnippet>184</a> .as_any()
-<a href=#185 id=185 data-nosnippet>185</a>
.downcast_ref::<StructArray>()
-<a href=#186 id=186 data-nosnippet>186</a> .ok_or(Error::new(
-<a href=#187 id=187 data-nosnippet>187</a>
ErrorKind::Unexpected,
-<a href=#188 id=188 data-nosnippet>188</a> <span
class="string">"Cannot convert Array to StructArray"</span>,
-<a href=#189 id=189 data-nosnippet>189</a> ))<span
class="question-mark">?
-<a href=#190 id=190 data-nosnippet>190</a> </span>.column(<span
class="kw-2">*</span>idx)
-<a href=#191 id=191 data-nosnippet>191</a> .clone();
-<a href=#192 id=192 data-nosnippet>192</a> null_buffer =
NullBuffer::union(null_buffer.as_ref(), array.logical_nulls().as_ref());
-<a href=#193 id=193 data-nosnippet>193</a> }
-<a href=#194 id=194 data-nosnippet>194</a> <span
class="prelude-val">Ok</span>(make_array(
-<a href=#195 id=195 data-nosnippet>195</a>
array.to_data().into_builder().nulls(null_buffer).build()<span
class="question-mark">?</span>,
-<a href=#196 id=196 data-nosnippet>196</a> ))
-<a href=#197 id=197 data-nosnippet>197</a> }
-<a href=#198 id=198 data-nosnippet>198</a>}
-<a href=#199 id=199 data-nosnippet>199</a>
-<a href=#200 id=200 data-nosnippet>200</a><span class="attr">#[cfg(test)]
-<a href=#201 id=201 data-nosnippet>201</a></span><span class="kw">mod
</span>test {
-<a href=#202 id=202 data-nosnippet>202</a> <span class="kw">use
</span>std::sync::Arc;
-<a href=#203 id=203 data-nosnippet>203</a>
-<a href=#204 id=204 data-nosnippet>204</a> <span class="kw">use
</span>arrow_array::{ArrayRef, Int32Array, RecordBatch, StringArray,
StructArray};
-<a href=#205 id=205 data-nosnippet>205</a> <span class="kw">use
</span>arrow_schema::{DataType, Field, Fields, Schema};
-<a href=#206 id=206 data-nosnippet>206</a>
-<a href=#207 id=207 data-nosnippet>207</a> <span class="kw">use
</span><span
class="kw">crate</span>::arrow::record_batch_projector::RecordBatchProjector;
-<a href=#208 id=208 data-nosnippet>208</a> <span class="kw">use
</span><span class="kw">crate</span>::spec::{NestedField, PrimitiveType, Schema
<span class="kw">as </span>IcebergSchema, Type};
-<a href=#209 id=209 data-nosnippet>209</a> <span class="kw">use
</span>crate::{Error, ErrorKind};
-<a href=#210 id=210 data-nosnippet>210</a>
-<a href=#211 id=211 data-nosnippet>211</a> <span class="attr">#[test]
-<a href=#212 id=212 data-nosnippet>212</a> </span><span class="kw">fn
</span>test_record_batch_projector_nested_level() {
-<a href=#213 id=213 data-nosnippet>213</a> <span class="kw">let
</span>inner_fields = <span class="macro">vec!</span>[
-<a href=#214 id=214 data-nosnippet>214</a> Field::new(<span
class="string">"inner_field1"</span>, DataType::Int32, <span
class="bool-val">false</span>),
-<a href=#215 id=215 data-nosnippet>215</a> Field::new(<span
class="string">"inner_field2"</span>, DataType::Utf8, <span
class="bool-val">false</span>),
-<a href=#216 id=216 data-nosnippet>216</a> ];
-<a href=#217 id=217 data-nosnippet>217</a> <span class="kw">let
</span>fields = <span class="macro">vec!</span>[
-<a href=#218 id=218 data-nosnippet>218</a> Field::new(<span
class="string">"field1"</span>, DataType::Int32, <span
class="bool-val">false</span>),
-<a href=#219 id=219 data-nosnippet>219</a> Field::new(
-<a href=#220 id=220 data-nosnippet>220</a> <span
class="string">"field2"</span>,
-<a href=#221 id=221 data-nosnippet>221</a>
DataType::Struct(Fields::from(inner_fields.clone())),
-<a href=#222 id=222 data-nosnippet>222</a> <span
class="bool-val">false</span>,
-<a href=#223 id=223 data-nosnippet>223</a> ),
-<a href=#224 id=224 data-nosnippet>224</a> ];
-<a href=#225 id=225 data-nosnippet>225</a> <span class="kw">let
</span>schema = Arc::new(Schema::new(fields));
-<a href=#226 id=226 data-nosnippet>226</a>
-<a href=#227 id=227 data-nosnippet>227</a> <span class="kw">let
</span>field_id_fetch_func = |field: <span class="kw-2">&</span>Field|
<span class="kw">match </span>field.name().as_str() {
-<a href=#228 id=228 data-nosnippet>228</a> <span
class="string">"field1" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">1</span>)),
-<a href=#229 id=229 data-nosnippet>229</a> <span
class="string">"field2" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">2</span>)),
-<a href=#230 id=230 data-nosnippet>230</a> <span
class="string">"inner_field1" </span>=> <span
class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span
class="number">3</span>)),
-<a href=#231 id=231 data-nosnippet>231</a> <span
class="string">"inner_field2" </span>=> <span
class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span
class="number">4</span>)),
-<a href=#232 id=232 data-nosnippet>232</a> <span class="kw">_
</span>=> <span
class="prelude-val">Err</span>(Error::new(ErrorKind::Unexpected, <span
class="string">"Field id not found"</span>)),
-<a href=#233 id=233 data-nosnippet>233</a> };
-<a href=#234 id=234 data-nosnippet>234</a> <span class="kw">let
</span>projector =
-<a href=#235 id=235 data-nosnippet>235</a>
RecordBatchProjector::new(schema.clone(), <span class="kw-2">&</span>[<span
class="number">1</span>, <span class="number">3</span>], field_id_fetch_func,
|<span class="kw">_</span>| <span class="bool-val">true</span>)
-<a href=#236 id=236 data-nosnippet>236</a> .unwrap();
-<a href=#237 id=237 data-nosnippet>237</a>
-<a href=#238 id=238 data-nosnippet>238</a> <span
class="macro">assert_eq!</span>(projector.field_indices.len(), <span
class="number">2</span>);
-<a href=#239 id=239 data-nosnippet>239</a> <span
class="macro">assert_eq!</span>(projector.field_indices[<span
class="number">0</span>], <span class="macro">vec!</span>[<span
class="number">0</span>]);
-<a href=#240 id=240 data-nosnippet>240</a> <span
class="macro">assert_eq!</span>(projector.field_indices[<span
class="number">1</span>], <span class="macro">vec!</span>[<span
class="number">0</span>, <span class="number">1</span>]);
-<a href=#241 id=241 data-nosnippet>241</a>
-<a href=#242 id=242 data-nosnippet>242</a> <span class="kw">let
</span>int_array = Arc::new(Int32Array::from(<span
class="macro">vec!</span>[<span class="number">1</span>, <span
class="number">2</span>, <span class="number">3</span>])) <span class="kw">as
</span>ArrayRef;
-<a href=#243 id=243 data-nosnippet>243</a> <span class="kw">let
</span>inner_int_array = Arc::new(Int32Array::from(<span
class="macro">vec!</span>[<span class="number">4</span>, <span
class="number">5</span>, <span class="number">6</span>])) <span class="kw">as
</span>ArrayRef;
-<a href=#244 id=244 data-nosnippet>244</a> <span class="kw">let
</span>inner_string_array = Arc::new(StringArray::from(<span
class="macro">vec!</span>[<span class="string">"x"</span>, <span
class="string">"y"</span>, <span class="string">"z"</span>])) <span
class="kw">as </span>ArrayRef;
-<a href=#245 id=245 data-nosnippet>245</a> <span class="kw">let
</span>struct_array = Arc::new(StructArray::from(<span
class="macro">vec!</span>[
-<a href=#246 id=246 data-nosnippet>246</a> (
-<a href=#247 id=247 data-nosnippet>247</a>
Arc::new(inner_fields[<span class="number">0</span>].clone()),
-<a href=#248 id=248 data-nosnippet>248</a> inner_int_array
<span class="kw">as </span>ArrayRef,
-<a href=#249 id=249 data-nosnippet>249</a> ),
-<a href=#250 id=250 data-nosnippet>250</a> (
-<a href=#251 id=251 data-nosnippet>251</a>
Arc::new(inner_fields[<span class="number">1</span>].clone()),
-<a href=#252 id=252 data-nosnippet>252</a> inner_string_array
<span class="kw">as </span>ArrayRef,
-<a href=#253 id=253 data-nosnippet>253</a> ),
-<a href=#254 id=254 data-nosnippet>254</a> ])) <span class="kw">as
</span>ArrayRef;
-<a href=#255 id=255 data-nosnippet>255</a> <span class="kw">let
</span>batch = RecordBatch::try_new(schema, <span
class="macro">vec!</span>[int_array, struct_array]).unwrap();
-<a href=#256 id=256 data-nosnippet>256</a>
-<a href=#257 id=257 data-nosnippet>257</a> <span class="kw">let
</span>projected_batch = projector.project_batch(batch).unwrap();
-<a href=#258 id=258 data-nosnippet>258</a> <span
class="macro">assert_eq!</span>(projected_batch.num_columns(), <span
class="number">2</span>);
-<a href=#259 id=259 data-nosnippet>259</a> <span class="kw">let
</span>projected_int_array = projected_batch
-<a href=#260 id=260 data-nosnippet>260</a> .column(<span
class="number">0</span>)
-<a href=#261 id=261 data-nosnippet>261</a> .as_any()
-<a href=#262 id=262 data-nosnippet>262</a>
.downcast_ref::<Int32Array>()
-<a href=#263 id=263 data-nosnippet>263</a> .unwrap();
-<a href=#264 id=264 data-nosnippet>264</a> <span class="kw">let
</span>projected_inner_int_array = projected_batch
-<a href=#265 id=265 data-nosnippet>265</a> .column(<span
class="number">1</span>)
-<a href=#266 id=266 data-nosnippet>266</a> .as_any()
-<a href=#267 id=267 data-nosnippet>267</a>
.downcast_ref::<Int32Array>()
-<a href=#268 id=268 data-nosnippet>268</a> .unwrap();
+<a href=#172 id=172 data-nosnippet>172</a> <span class="kw">let
</span><span class="kw-2">mut </span>columns = Vec::with_capacity(<span
class="self">self</span>.field_indices.len());
+<a href=#173 id=173 data-nosnippet>173</a> <span class="kw">for
</span>index_vec <span class="kw">in </span><span
class="kw-2">&</span><span class="self">self</span>.field_indices {
+<a href=#174 id=174 data-nosnippet>174</a> columns.push(<span
class="self">Self</span>::get_column_by_field_index(batch, index_vec)<span
class="question-mark">?</span>);
+<a href=#175 id=175 data-nosnippet>175</a> }
+<a href=#176 id=176 data-nosnippet>176</a> <span
class="prelude-val">Ok</span>(columns)
+<a href=#177 id=177 data-nosnippet>177</a> }
+<a href=#178 id=178 data-nosnippet>178</a>
+<a href=#179 id=179 data-nosnippet>179</a> <span class="kw">fn
</span>get_column_by_field_index(batch: <span
class="kw-2">&</span>[ArrayRef], field_index: <span
class="kw-2">&</span>[usize]) -> <span
class="prelude-ty">Result</span><ArrayRef> {
+<a href=#180 id=180 data-nosnippet>180</a> <span class="kw">let
</span><span class="kw-2">mut </span>rev_iterator = field_index.iter().rev();
+<a href=#181 id=181 data-nosnippet>181</a> <span class="kw">let
</span><span class="kw-2">mut </span>array = <span
class="kw-2">&</span>batch[<span
class="kw-2">*</span>rev_iterator.next().unwrap()];
+<a href=#182 id=182 data-nosnippet>182</a> <span class="kw">let
</span><span class="kw-2">mut </span>ancestor_nulls = <span
class="prelude-val">None</span>;
+<a href=#183 id=183 data-nosnippet>183</a> <span class="kw">for
</span>idx <span class="kw">in </span>rev_iterator {
+<a href=#184 id=184 data-nosnippet>184</a> <span class="kw">let
</span>struct_array = array
+<a href=#185 id=185 data-nosnippet>185</a> .as_any()
+<a href=#186 id=186 data-nosnippet>186</a>
.downcast_ref::<StructArray>()
+<a href=#187 id=187 data-nosnippet>187</a> .ok_or_else(|| {
+<a href=#188 id=188 data-nosnippet>188</a>
Error::new(ErrorKind::Unexpected, <span class="string">"Cannot convert Array to
StructArray"</span>)
+<a href=#189 id=189 data-nosnippet>189</a> })<span
class="question-mark">?</span>;
+<a href=#190 id=190 data-nosnippet>190</a> ancestor_nulls =
NullBuffer::union(ancestor_nulls.as_ref(), struct_array.nulls());
+<a href=#191 id=191 data-nosnippet>191</a> array =
struct_array.column(<span class="kw-2">*</span>idx);
+<a href=#192 id=192 data-nosnippet>192</a> }
+<a href=#193 id=193 data-nosnippet>193</a> <span class="kw">let
</span><span class="prelude-val">Some</span>(ancestor_nulls) = ancestor_nulls
<span class="kw">else </span>{
+<a href=#194 id=194 data-nosnippet>194</a> <span class="comment">//
Iceberg leaf types handled here have logical_nulls() == nulls(), so no null
+<a href=#195 id=195 data-nosnippet>195</a> // materialization is
needed when no ancestor contributes nulls.
+<a href=#196 id=196 data-nosnippet>196</a> </span><span
class="kw">return </span><span class="prelude-val">Ok</span>(Arc::clone(array));
+<a href=#197 id=197 data-nosnippet>197</a> };
+<a href=#198 id=198 data-nosnippet>198</a> <span class="kw">let
</span>null_buffer = NullBuffer::union(<span
class="prelude-val">Some</span>(<span class="kw-2">&</span>ancestor_nulls),
array.logical_nulls().as_ref());
+<a href=#199 id=199 data-nosnippet>199</a> <span
class="prelude-val">Ok</span>(make_array(
+<a href=#200 id=200 data-nosnippet>200</a>
array.to_data().into_builder().nulls(null_buffer).build()<span
class="question-mark">?</span>,
+<a href=#201 id=201 data-nosnippet>201</a> ))
+<a href=#202 id=202 data-nosnippet>202</a> }
+<a href=#203 id=203 data-nosnippet>203</a>}
+<a href=#204 id=204 data-nosnippet>204</a>
+<a href=#205 id=205 data-nosnippet>205</a><span class="attr">#[cfg(test)]
+<a href=#206 id=206 data-nosnippet>206</a></span><span class="kw">mod
</span>test {
+<a href=#207 id=207 data-nosnippet>207</a> <span class="kw">use
</span>std::sync::Arc;
+<a href=#208 id=208 data-nosnippet>208</a>
+<a href=#209 id=209 data-nosnippet>209</a> <span class="kw">use
</span>arrow_array::{Array, ArrayRef, Int32Array, RecordBatch, StringArray,
StructArray};
+<a href=#210 id=210 data-nosnippet>210</a> <span class="kw">use
</span>arrow_buffer::NullBuffer;
+<a href=#211 id=211 data-nosnippet>211</a> <span class="kw">use
</span>arrow_schema::{DataType, Field, Fields, Schema};
+<a href=#212 id=212 data-nosnippet>212</a>
+<a href=#213 id=213 data-nosnippet>213</a> <span class="kw">use
</span><span
class="kw">crate</span>::arrow::record_batch_projector::RecordBatchProjector;
+<a href=#214 id=214 data-nosnippet>214</a> <span class="kw">use
</span><span class="kw">crate</span>::spec::{NestedField, PrimitiveType, Schema
<span class="kw">as </span>IcebergSchema, Type};
+<a href=#215 id=215 data-nosnippet>215</a> <span class="kw">use
</span>crate::{Error, ErrorKind};
+<a href=#216 id=216 data-nosnippet>216</a>
+<a href=#217 id=217 data-nosnippet>217</a> <span class="kw">fn
</span>nested_projector() -> (RecordBatchProjector, Field, Field) {
+<a href=#218 id=218 data-nosnippet>218</a> <span class="kw">let
</span>leaf_field = Field::new(<span class="string">"leaf"</span>,
DataType::Int32, <span class="bool-val">true</span>);
+<a href=#219 id=219 data-nosnippet>219</a> <span class="kw">let
</span>inner_field = Field::new(
+<a href=#220 id=220 data-nosnippet>220</a> <span
class="string">"inner"</span>,
+<a href=#221 id=221 data-nosnippet>221</a>
DataType::Struct(Fields::from(<span
class="macro">vec!</span>[leaf_field.clone()])),
+<a href=#222 id=222 data-nosnippet>222</a> <span
class="bool-val">true</span>,
+<a href=#223 id=223 data-nosnippet>223</a> );
+<a href=#224 id=224 data-nosnippet>224</a> <span class="kw">let
</span>outer_field = Field::new(
+<a href=#225 id=225 data-nosnippet>225</a> <span
class="string">"outer"</span>,
+<a href=#226 id=226 data-nosnippet>226</a>
DataType::Struct(Fields::from(<span
class="macro">vec!</span>[inner_field.clone()])),
+<a href=#227 id=227 data-nosnippet>227</a> <span
class="bool-val">true</span>,
+<a href=#228 id=228 data-nosnippet>228</a> );
+<a href=#229 id=229 data-nosnippet>229</a> <span class="kw">let
</span>schema = Arc::new(Schema::new(<span
class="macro">vec!</span>[outer_field]));
+<a href=#230 id=230 data-nosnippet>230</a> <span class="kw">let
</span>field_id_fetch_func = |field: <span class="kw-2">&</span>Field|
-> <span class="kw">crate</span>::Result<<span
class="prelude-ty">Option</span><i64>> {
+<a href=#231 id=231 data-nosnippet>231</a> <span class="kw">match
</span>field.name().as_str() {
+<a href=#232 id=232 data-nosnippet>232</a> <span
class="string">"outer" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">1</span>)),
+<a href=#233 id=233 data-nosnippet>233</a> <span
class="string">"inner" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">2</span>)),
+<a href=#234 id=234 data-nosnippet>234</a> <span
class="string">"leaf" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">3</span>)),
+<a href=#235 id=235 data-nosnippet>235</a> <span class="kw">_
</span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">None</span>),
+<a href=#236 id=236 data-nosnippet>236</a> }
+<a href=#237 id=237 data-nosnippet>237</a> };
+<a href=#238 id=238 data-nosnippet>238</a> <span class="kw">let
</span>projector =
+<a href=#239 id=239 data-nosnippet>239</a>
RecordBatchProjector::new(schema, <span class="kw-2">&</span>[<span
class="number">3</span>], field_id_fetch_func, |<span class="kw">_</span>|
<span class="bool-val">true</span>).unwrap();
+<a href=#240 id=240 data-nosnippet>240</a> (projector, inner_field,
leaf_field)
+<a href=#241 id=241 data-nosnippet>241</a> }
+<a href=#242 id=242 data-nosnippet>242</a>
+<a href=#243 id=243 data-nosnippet>243</a> <span class="attr">#[test]
+<a href=#244 id=244 data-nosnippet>244</a> </span><span class="kw">fn
</span>test_record_batch_projector_nested_level() {
+<a href=#245 id=245 data-nosnippet>245</a> <span class="kw">let
</span>inner_fields = <span class="macro">vec!</span>[
+<a href=#246 id=246 data-nosnippet>246</a> Field::new(<span
class="string">"inner_field1"</span>, DataType::Int32, <span
class="bool-val">false</span>),
+<a href=#247 id=247 data-nosnippet>247</a> Field::new(<span
class="string">"inner_field2"</span>, DataType::Utf8, <span
class="bool-val">false</span>),
+<a href=#248 id=248 data-nosnippet>248</a> ];
+<a href=#249 id=249 data-nosnippet>249</a> <span class="kw">let
</span>fields = <span class="macro">vec!</span>[
+<a href=#250 id=250 data-nosnippet>250</a> Field::new(<span
class="string">"field1"</span>, DataType::Int32, <span
class="bool-val">false</span>),
+<a href=#251 id=251 data-nosnippet>251</a> Field::new(
+<a href=#252 id=252 data-nosnippet>252</a> <span
class="string">"field2"</span>,
+<a href=#253 id=253 data-nosnippet>253</a>
DataType::Struct(Fields::from(inner_fields.clone())),
+<a href=#254 id=254 data-nosnippet>254</a> <span
class="bool-val">false</span>,
+<a href=#255 id=255 data-nosnippet>255</a> ),
+<a href=#256 id=256 data-nosnippet>256</a> ];
+<a href=#257 id=257 data-nosnippet>257</a> <span class="kw">let
</span>schema = Arc::new(Schema::new(fields));
+<a href=#258 id=258 data-nosnippet>258</a>
+<a href=#259 id=259 data-nosnippet>259</a> <span class="kw">let
</span>field_id_fetch_func = |field: <span class="kw-2">&</span>Field|
<span class="kw">match </span>field.name().as_str() {
+<a href=#260 id=260 data-nosnippet>260</a> <span
class="string">"field1" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">1</span>)),
+<a href=#261 id=261 data-nosnippet>261</a> <span
class="string">"field2" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">2</span>)),
+<a href=#262 id=262 data-nosnippet>262</a> <span
class="string">"inner_field1" </span>=> <span
class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span
class="number">3</span>)),
+<a href=#263 id=263 data-nosnippet>263</a> <span
class="string">"inner_field2" </span>=> <span
class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span
class="number">4</span>)),
+<a href=#264 id=264 data-nosnippet>264</a> <span class="kw">_
</span>=> <span
class="prelude-val">Err</span>(Error::new(ErrorKind::Unexpected, <span
class="string">"Field id not found"</span>)),
+<a href=#265 id=265 data-nosnippet>265</a> };
+<a href=#266 id=266 data-nosnippet>266</a> <span class="kw">let
</span>projector =
+<a href=#267 id=267 data-nosnippet>267</a>
RecordBatchProjector::new(schema.clone(), <span class="kw-2">&</span>[<span
class="number">1</span>, <span class="number">3</span>], field_id_fetch_func,
|<span class="kw">_</span>| <span class="bool-val">true</span>)
+<a href=#268 id=268 data-nosnippet>268</a> .unwrap();
<a href=#269 id=269 data-nosnippet>269</a>
-<a href=#270 id=270 data-nosnippet>270</a> <span
class="macro">assert_eq!</span>(projected_int_array.values(), <span
class="kw-2">&</span>[<span class="number">1</span>, <span
class="number">2</span>, <span class="number">3</span>]);
-<a href=#271 id=271 data-nosnippet>271</a> <span
class="macro">assert_eq!</span>(projected_inner_int_array.values(), <span
class="kw-2">&</span>[<span class="number">4</span>, <span
class="number">5</span>, <span class="number">6</span>]);
-<a href=#272 id=272 data-nosnippet>272</a> }
+<a href=#270 id=270 data-nosnippet>270</a> <span
class="macro">assert_eq!</span>(projector.field_indices.len(), <span
class="number">2</span>);
+<a href=#271 id=271 data-nosnippet>271</a> <span
class="macro">assert_eq!</span>(projector.field_indices[<span
class="number">0</span>], <span class="macro">vec!</span>[<span
class="number">0</span>]);
+<a href=#272 id=272 data-nosnippet>272</a> <span
class="macro">assert_eq!</span>(projector.field_indices[<span
class="number">1</span>], <span class="macro">vec!</span>[<span
class="number">0</span>, <span class="number">1</span>]);
<a href=#273 id=273 data-nosnippet>273</a>
-<a href=#274 id=274 data-nosnippet>274</a> <span class="attr">#[test]
-<a href=#275 id=275 data-nosnippet>275</a> </span><span class="kw">fn
</span>test_field_not_found() {
-<a href=#276 id=276 data-nosnippet>276</a> <span class="kw">let
</span>inner_fields = <span class="macro">vec!</span>[
-<a href=#277 id=277 data-nosnippet>277</a> Field::new(<span
class="string">"inner_field1"</span>, DataType::Int32, <span
class="bool-val">false</span>),
-<a href=#278 id=278 data-nosnippet>278</a> Field::new(<span
class="string">"inner_field2"</span>, DataType::Utf8, <span
class="bool-val">false</span>),
-<a href=#279 id=279 data-nosnippet>279</a> ];
-<a href=#280 id=280 data-nosnippet>280</a>
-<a href=#281 id=281 data-nosnippet>281</a> <span class="kw">let
</span>fields = <span class="macro">vec!</span>[
-<a href=#282 id=282 data-nosnippet>282</a> Field::new(<span
class="string">"field1"</span>, DataType::Int32, <span
class="bool-val">false</span>),
-<a href=#283 id=283 data-nosnippet>283</a> Field::new(
-<a href=#284 id=284 data-nosnippet>284</a> <span
class="string">"field2"</span>,
-<a href=#285 id=285 data-nosnippet>285</a>
DataType::Struct(Fields::from(inner_fields.clone())),
-<a href=#286 id=286 data-nosnippet>286</a> <span
class="bool-val">false</span>,
-<a href=#287 id=287 data-nosnippet>287</a> ),
-<a href=#288 id=288 data-nosnippet>288</a> ];
-<a href=#289 id=289 data-nosnippet>289</a> <span class="kw">let
</span>schema = Arc::new(Schema::new(fields));
-<a href=#290 id=290 data-nosnippet>290</a>
-<a href=#291 id=291 data-nosnippet>291</a> <span class="kw">let
</span>field_id_fetch_func = |field: <span class="kw-2">&</span>Field|
<span class="kw">match </span>field.name().as_str() {
-<a href=#292 id=292 data-nosnippet>292</a> <span
class="string">"field1" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">1</span>)),
-<a href=#293 id=293 data-nosnippet>293</a> <span
class="string">"field2" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">2</span>)),
-<a href=#294 id=294 data-nosnippet>294</a> <span
class="string">"inner_field1" </span>=> <span
class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span
class="number">3</span>)),
-<a href=#295 id=295 data-nosnippet>295</a> <span
class="string">"inner_field2" </span>=> <span
class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span
class="number">4</span>)),
-<a href=#296 id=296 data-nosnippet>296</a> <span class="kw">_
</span>=> <span
class="prelude-val">Err</span>(Error::new(ErrorKind::Unexpected, <span
class="string">"Field id not found"</span>)),
-<a href=#297 id=297 data-nosnippet>297</a> };
-<a href=#298 id=298 data-nosnippet>298</a> <span class="kw">let
</span>projector =
-<a href=#299 id=299 data-nosnippet>299</a>
RecordBatchProjector::new(schema.clone(), <span class="kw-2">&</span>[<span
class="number">1</span>, <span class="number">5</span>], field_id_fetch_func,
|<span class="kw">_</span>| <span class="bool-val">true</span>);
-<a href=#300 id=300 data-nosnippet>300</a>
-<a href=#301 id=301 data-nosnippet>301</a> <span
class="macro">assert!</span>(projector.is_err());
-<a href=#302 id=302 data-nosnippet>302</a> }
-<a href=#303 id=303 data-nosnippet>303</a>
-<a href=#304 id=304 data-nosnippet>304</a> <span class="attr">#[test]
-<a href=#305 id=305 data-nosnippet>305</a> </span><span class="kw">fn
</span>test_field_not_reachable() {
-<a href=#306 id=306 data-nosnippet>306</a> <span class="kw">let
</span>inner_fields = <span class="macro">vec!</span>[
-<a href=#307 id=307 data-nosnippet>307</a> Field::new(<span
class="string">"inner_field1"</span>, DataType::Int32, <span
class="bool-val">false</span>),
-<a href=#308 id=308 data-nosnippet>308</a> Field::new(<span
class="string">"inner_field2"</span>, DataType::Utf8, <span
class="bool-val">false</span>),
-<a href=#309 id=309 data-nosnippet>309</a> ];
-<a href=#310 id=310 data-nosnippet>310</a>
-<a href=#311 id=311 data-nosnippet>311</a> <span class="kw">let
</span>fields = <span class="macro">vec!</span>[
-<a href=#312 id=312 data-nosnippet>312</a> Field::new(<span
class="string">"field1"</span>, DataType::Int32, <span
class="bool-val">false</span>),
-<a href=#313 id=313 data-nosnippet>313</a> Field::new(
-<a href=#314 id=314 data-nosnippet>314</a> <span
class="string">"field2"</span>,
-<a href=#315 id=315 data-nosnippet>315</a>
DataType::Struct(Fields::from(inner_fields.clone())),
-<a href=#316 id=316 data-nosnippet>316</a> <span
class="bool-val">false</span>,
-<a href=#317 id=317 data-nosnippet>317</a> ),
-<a href=#318 id=318 data-nosnippet>318</a> ];
-<a href=#319 id=319 data-nosnippet>319</a> <span class="kw">let
</span>schema = Arc::new(Schema::new(fields));
-<a href=#320 id=320 data-nosnippet>320</a>
-<a href=#321 id=321 data-nosnippet>321</a> <span class="kw">let
</span>field_id_fetch_func = |field: <span class="kw-2">&</span>Field|
<span class="kw">match </span>field.name().as_str() {
-<a href=#322 id=322 data-nosnippet>322</a> <span
class="string">"field1" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">1</span>)),
-<a href=#323 id=323 data-nosnippet>323</a> <span
class="string">"field2" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">2</span>)),
-<a href=#324 id=324 data-nosnippet>324</a> <span
class="string">"inner_field1" </span>=> <span
class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span
class="number">3</span>)),
-<a href=#325 id=325 data-nosnippet>325</a> <span
class="string">"inner_field2" </span>=> <span
class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span
class="number">4</span>)),
-<a href=#326 id=326 data-nosnippet>326</a> <span class="kw">_
</span>=> <span
class="prelude-val">Err</span>(Error::new(ErrorKind::Unexpected, <span
class="string">"Field id not found"</span>)),
-<a href=#327 id=327 data-nosnippet>327</a> };
-<a href=#328 id=328 data-nosnippet>328</a> <span class="kw">let
</span>projector =
-<a href=#329 id=329 data-nosnippet>329</a>
RecordBatchProjector::new(schema.clone(), <span class="kw-2">&</span>[<span
class="number">3</span>], field_id_fetch_func, |<span class="kw">_</span>|
<span class="bool-val">false</span>);
-<a href=#330 id=330 data-nosnippet>330</a> <span
class="macro">assert!</span>(projector.is_err());
-<a href=#331 id=331 data-nosnippet>331</a>
-<a href=#332 id=332 data-nosnippet>332</a> <span class="kw">let
</span>projector =
-<a href=#333 id=333 data-nosnippet>333</a>
RecordBatchProjector::new(schema.clone(), <span class="kw-2">&</span>[<span
class="number">3</span>], field_id_fetch_func, |<span class="kw">_</span>|
<span class="bool-val">true</span>);
-<a href=#334 id=334 data-nosnippet>334</a> <span
class="macro">assert!</span>(projector.is_ok());
-<a href=#335 id=335 data-nosnippet>335</a> }
-<a href=#336 id=336 data-nosnippet>336</a>
-<a href=#337 id=337 data-nosnippet>337</a> <span class="attr">#[test]
-<a href=#338 id=338 data-nosnippet>338</a> </span><span class="kw">fn
</span>test_from_iceberg_schema() {
-<a href=#339 id=339 data-nosnippet>339</a> <span class="kw">let
</span>iceberg_schema = IcebergSchema::builder()
-<a href=#340 id=340 data-nosnippet>340</a> .with_schema_id(<span
class="number">0</span>)
-<a href=#341 id=341 data-nosnippet>341</a> .with_fields(<span
class="macro">vec!</span>[
-<a href=#342 id=342 data-nosnippet>342</a>
NestedField::required(<span class="number">1</span>, <span
class="string">"id"</span>, Type::Primitive(PrimitiveType::Int)).into(),
-<a href=#343 id=343 data-nosnippet>343</a>
NestedField::required(<span class="number">2</span>, <span
class="string">"name"</span>, Type::Primitive(PrimitiveType::String)).into(),
-<a href=#344 id=344 data-nosnippet>344</a>
NestedField::optional(<span class="number">3</span>, <span
class="string">"age"</span>, Type::Primitive(PrimitiveType::Int)).into(),
-<a href=#345 id=345 data-nosnippet>345</a> ])
-<a href=#346 id=346 data-nosnippet>346</a> .build()
-<a href=#347 id=347 data-nosnippet>347</a> .unwrap();
-<a href=#348 id=348 data-nosnippet>348</a>
-<a href=#349 id=349 data-nosnippet>349</a> <span class="kw">let
</span>projector =
-<a href=#350 id=350 data-nosnippet>350</a>
RecordBatchProjector::from_iceberg_schema(Arc::new(iceberg_schema), <span
class="kw-2">&</span>[<span class="number">1</span>, <span
class="number">3</span>]).unwrap();
-<a href=#351 id=351 data-nosnippet>351</a>
-<a href=#352 id=352 data-nosnippet>352</a> <span
class="macro">assert_eq!</span>(projector.field_indices.len(), <span
class="number">2</span>);
-<a href=#353 id=353 data-nosnippet>353</a> <span
class="macro">assert_eq!</span>(projector.projected_schema_ref().fields().len(),
<span class="number">2</span>);
-<a href=#354 id=354 data-nosnippet>354</a> <span
class="macro">assert_eq!</span>(projector.projected_schema_ref().field(<span
class="number">0</span>).name(), <span class="string">"id"</span>);
-<a href=#355 id=355 data-nosnippet>355</a> <span
class="macro">assert_eq!</span>(projector.projected_schema_ref().field(<span
class="number">1</span>).name(), <span class="string">"age"</span>);
-<a href=#356 id=356 data-nosnippet>356</a> }
-<a href=#357 id=357 data-nosnippet>357</a>}
+<a href=#274 id=274 data-nosnippet>274</a> <span class="kw">let
</span>int_array = Arc::new(Int32Array::from(<span
class="macro">vec!</span>[<span class="number">1</span>, <span
class="number">2</span>, <span class="number">3</span>])) <span class="kw">as
</span>ArrayRef;
+<a href=#275 id=275 data-nosnippet>275</a> <span class="kw">let
</span>inner_int_array = Arc::new(Int32Array::from(<span
class="macro">vec!</span>[<span class="number">4</span>, <span
class="number">5</span>, <span class="number">6</span>])) <span class="kw">as
</span>ArrayRef;
+<a href=#276 id=276 data-nosnippet>276</a> <span class="kw">let
</span>inner_string_array = Arc::new(StringArray::from(<span
class="macro">vec!</span>[<span class="string">"x"</span>, <span
class="string">"y"</span>, <span class="string">"z"</span>])) <span
class="kw">as </span>ArrayRef;
+<a href=#277 id=277 data-nosnippet>277</a> <span class="kw">let
</span>struct_array = Arc::new(StructArray::from(<span
class="macro">vec!</span>[
+<a href=#278 id=278 data-nosnippet>278</a> (
+<a href=#279 id=279 data-nosnippet>279</a>
Arc::new(inner_fields[<span class="number">0</span>].clone()),
+<a href=#280 id=280 data-nosnippet>280</a> inner_int_array
<span class="kw">as </span>ArrayRef,
+<a href=#281 id=281 data-nosnippet>281</a> ),
+<a href=#282 id=282 data-nosnippet>282</a> (
+<a href=#283 id=283 data-nosnippet>283</a>
Arc::new(inner_fields[<span class="number">1</span>].clone()),
+<a href=#284 id=284 data-nosnippet>284</a> inner_string_array
<span class="kw">as </span>ArrayRef,
+<a href=#285 id=285 data-nosnippet>285</a> ),
+<a href=#286 id=286 data-nosnippet>286</a> ])) <span class="kw">as
</span>ArrayRef;
+<a href=#287 id=287 data-nosnippet>287</a> <span class="kw">let
</span>batch = RecordBatch::try_new(schema, <span
class="macro">vec!</span>[int_array, struct_array]).unwrap();
+<a href=#288 id=288 data-nosnippet>288</a>
+<a href=#289 id=289 data-nosnippet>289</a> <span class="kw">let
</span>projected_batch = projector.project_batch(batch).unwrap();
+<a href=#290 id=290 data-nosnippet>290</a> <span
class="macro">assert_eq!</span>(projected_batch.num_columns(), <span
class="number">2</span>);
+<a href=#291 id=291 data-nosnippet>291</a> <span class="kw">let
</span>projected_int_array = projected_batch
+<a href=#292 id=292 data-nosnippet>292</a> .column(<span
class="number">0</span>)
+<a href=#293 id=293 data-nosnippet>293</a> .as_any()
+<a href=#294 id=294 data-nosnippet>294</a>
.downcast_ref::<Int32Array>()
+<a href=#295 id=295 data-nosnippet>295</a> .unwrap();
+<a href=#296 id=296 data-nosnippet>296</a> <span class="kw">let
</span>projected_inner_int_array = projected_batch
+<a href=#297 id=297 data-nosnippet>297</a> .column(<span
class="number">1</span>)
+<a href=#298 id=298 data-nosnippet>298</a> .as_any()
+<a href=#299 id=299 data-nosnippet>299</a>
.downcast_ref::<Int32Array>()
+<a href=#300 id=300 data-nosnippet>300</a> .unwrap();
+<a href=#301 id=301 data-nosnippet>301</a>
+<a href=#302 id=302 data-nosnippet>302</a> <span
class="macro">assert_eq!</span>(projected_int_array.values(), <span
class="kw-2">&</span>[<span class="number">1</span>, <span
class="number">2</span>, <span class="number">3</span>]);
+<a href=#303 id=303 data-nosnippet>303</a> <span
class="macro">assert_eq!</span>(projected_inner_int_array.values(), <span
class="kw-2">&</span>[<span class="number">4</span>, <span
class="number">5</span>, <span class="number">6</span>]);
+<a href=#304 id=304 data-nosnippet>304</a> }
+<a href=#305 id=305 data-nosnippet>305</a>
+<a href=#306 id=306 data-nosnippet>306</a> <span class="attr">#[test]
+<a href=#307 id=307 data-nosnippet>307</a> </span><span class="kw">fn
</span>test_record_batch_projector_top_level_nullable_column() {
+<a href=#308 id=308 data-nosnippet>308</a> <span class="kw">let
</span>iceberg_schema = IcebergSchema::builder()
+<a href=#309 id=309 data-nosnippet>309</a> .with_schema_id(<span
class="number">0</span>)
+<a href=#310 id=310 data-nosnippet>310</a> .with_fields(<span
class="macro">vec!</span>[
+<a href=#311 id=311 data-nosnippet>311</a>
NestedField::optional(<span class="number">1</span>, <span
class="string">"id"</span>, Type::Primitive(PrimitiveType::Int)).into(),
+<a href=#312 id=312 data-nosnippet>312</a> ])
+<a href=#313 id=313 data-nosnippet>313</a> .build()
+<a href=#314 id=314 data-nosnippet>314</a> .unwrap();
+<a href=#315 id=315 data-nosnippet>315</a> <span class="kw">let
</span>projector =
+<a href=#316 id=316 data-nosnippet>316</a>
RecordBatchProjector::from_iceberg_schema(Arc::new(iceberg_schema), <span
class="kw-2">&</span>[<span class="number">1</span>]).unwrap();
+<a href=#317 id=317 data-nosnippet>317</a> <span class="kw">let
</span>input = Arc::new(Int32Array::from(<span class="macro">vec!</span>[<span
class="prelude-val">Some</span>(<span class="number">10</span>), <span
class="prelude-val">None</span>, <span class="prelude-val">Some</span>(<span
class="number">30</span>)])) <span class="kw">as </span>ArrayRef;
+<a href=#318 id=318 data-nosnippet>318</a>
+<a href=#319 id=319 data-nosnippet>319</a> <span class="kw">let
</span>projected = projector
+<a href=#320 id=320 data-nosnippet>320</a>
.project_column(std::slice::from_ref(<span class="kw-2">&</span>input))
+<a href=#321 id=321 data-nosnippet>321</a> .unwrap();
+<a href=#322 id=322 data-nosnippet>322</a> <span
class="macro">assert!</span>(Arc::ptr_eq(<span
class="kw-2">&</span>projected[<span class="number">0</span>], <span
class="kw-2">&</span>input));
+<a href=#323 id=323 data-nosnippet>323</a> <span class="kw">let
</span>projected_array = projected[<span
class="number">0</span>].as_any().downcast_ref::<Int32Array>().unwrap();
+<a href=#324 id=324 data-nosnippet>324</a>
+<a href=#325 id=325 data-nosnippet>325</a> <span
class="macro">assert_eq!</span>(projected_array.value(<span
class="number">0</span>), <span class="number">10</span>);
+<a href=#326 id=326 data-nosnippet>326</a> <span
class="macro">assert_eq!</span>(projected_array.null_count(), <span
class="number">1</span>);
+<a href=#327 id=327 data-nosnippet>327</a> <span
class="macro">assert!</span>(projected_array.is_null(<span
class="number">1</span>));
+<a href=#328 id=328 data-nosnippet>328</a> <span
class="macro">assert_eq!</span>(projected_array.value(<span
class="number">2</span>), <span class="number">30</span>);
+<a href=#329 id=329 data-nosnippet>329</a> }
+<a href=#330 id=330 data-nosnippet>330</a>
+<a href=#331 id=331 data-nosnippet>331</a> <span class="attr">#[test]
+<a href=#332 id=332 data-nosnippet>332</a> </span><span class="kw">fn
</span>test_record_batch_projector_nested_nullable_leaf_without_parent_nulls() {
+<a href=#333 id=333 data-nosnippet>333</a> <span class="kw">let
</span>(projector, inner_field, leaf_field) = nested_projector();
+<a href=#334 id=334 data-nosnippet>334</a> <span class="kw">let
</span>leaf = Arc::new(Int32Array::from(<span class="macro">vec!</span>[<span
class="prelude-val">Some</span>(<span class="number">10</span>), <span
class="prelude-val">None</span>, <span class="prelude-val">Some</span>(<span
class="number">30</span>)])) <span class="kw">as </span>ArrayRef;
+<a href=#335 id=335 data-nosnippet>335</a> <span class="kw">let
</span>inner = Arc::new(StructArray::new(
+<a href=#336 id=336 data-nosnippet>336</a> Fields::from(<span
class="macro">vec!</span>[leaf_field]),
+<a href=#337 id=337 data-nosnippet>337</a> <span
class="macro">vec!</span>[leaf.clone()],
+<a href=#338 id=338 data-nosnippet>338</a> <span
class="prelude-val">None</span>,
+<a href=#339 id=339 data-nosnippet>339</a> )) <span class="kw">as
</span>ArrayRef;
+<a href=#340 id=340 data-nosnippet>340</a> <span class="kw">let
</span>outer = Arc::new(StructArray::new(
+<a href=#341 id=341 data-nosnippet>341</a> Fields::from(<span
class="macro">vec!</span>[inner_field]),
+<a href=#342 id=342 data-nosnippet>342</a> <span
class="macro">vec!</span>[inner],
+<a href=#343 id=343 data-nosnippet>343</a> <span
class="prelude-val">None</span>,
+<a href=#344 id=344 data-nosnippet>344</a> )) <span class="kw">as
</span>ArrayRef;
+<a href=#345 id=345 data-nosnippet>345</a>
+<a href=#346 id=346 data-nosnippet>346</a> <span class="kw">let
</span>projected = projector.project_column(<span
class="kw-2">&</span>[outer]).unwrap();
+<a href=#347 id=347 data-nosnippet>347</a> <span
class="macro">assert!</span>(Arc::ptr_eq(<span
class="kw-2">&</span>projected[<span class="number">0</span>], <span
class="kw-2">&</span>leaf));
+<a href=#348 id=348 data-nosnippet>348</a> }
+<a href=#349 id=349 data-nosnippet>349</a>
+<a href=#350 id=350 data-nosnippet>350</a> <span class="attr">#[test]
+<a href=#351 id=351 data-nosnippet>351</a> </span><span class="kw">fn
</span>test_record_batch_projector_nested_all_valid_slice_reuses_leaf() {
+<a href=#352 id=352 data-nosnippet>352</a> <span class="kw">let
</span>(projector, inner_field, leaf_field) = nested_projector();
+<a href=#353 id=353 data-nosnippet>353</a> <span class="kw">let
</span>leaf = Arc::new(Int32Array::from(<span class="macro">vec!</span>[<span
class="prelude-val">Some</span>(<span class="number">0</span>), <span
class="prelude-val">Some</span>(<span class="number">10</span>), <span
class="prelude-val">None</span>, <span class="prelude-val">Some</span>(<span
class="number">30</span>)])) <span class="kw">as </span>ArrayRef;
+<a href=#354 id=354 data-nosnippet>354</a> <span class="kw">let
</span>inner = Arc::new(StructArray::new(
+<a href=#355 id=355 data-nosnippet>355</a> Fields::from(<span
class="macro">vec!</span>[leaf_field]),
+<a href=#356 id=356 data-nosnippet>356</a> <span
class="macro">vec!</span>[leaf],
+<a href=#357 id=357 data-nosnippet>357</a> <span
class="prelude-val">None</span>,
+<a href=#358 id=358 data-nosnippet>358</a> )) <span class="kw">as
</span>ArrayRef;
+<a href=#359 id=359 data-nosnippet>359</a> <span class="kw">let
</span>outer = StructArray::new(
+<a href=#360 id=360 data-nosnippet>360</a> Fields::from(<span
class="macro">vec!</span>[inner_field]),
+<a href=#361 id=361 data-nosnippet>361</a> <span
class="macro">vec!</span>[inner],
+<a href=#362 id=362 data-nosnippet>362</a> <span
class="prelude-val">Some</span>(NullBuffer::from(<span
class="macro">vec!</span>[<span class="bool-val">false</span>, <span
class="bool-val">true</span>, <span class="bool-val">true</span>, <span
class="bool-val">true</span>])),
+<a href=#363 id=363 data-nosnippet>363</a> )
+<a href=#364 id=364 data-nosnippet>364</a> .slice(<span
class="number">1</span>, <span class="number">3</span>);
+<a href=#365 id=365 data-nosnippet>365</a> <span
class="macro">assert_eq!</span>(outer.null_count(), <span
class="number">0</span>);
+<a href=#366 id=366 data-nosnippet>366</a> <span
class="macro">assert!</span>(outer.nulls().is_some());
+<a href=#367 id=367 data-nosnippet>367</a>
+<a href=#368 id=368 data-nosnippet>368</a> <span class="kw">let
</span>sliced_inner = outer
+<a href=#369 id=369 data-nosnippet>369</a> .column(<span
class="number">0</span>)
+<a href=#370 id=370 data-nosnippet>370</a> .as_any()
+<a href=#371 id=371 data-nosnippet>371</a>
.downcast_ref::<StructArray>()
+<a href=#372 id=372 data-nosnippet>372</a> .unwrap();
+<a href=#373 id=373 data-nosnippet>373</a> <span class="kw">let
</span>sliced_leaf = sliced_inner.column(<span class="number">0</span>).clone();
+<a href=#374 id=374 data-nosnippet>374</a> <span class="kw">let
</span>projected = projector
+<a href=#375 id=375 data-nosnippet>375</a> .project_column(<span
class="kw-2">&</span>[Arc::new(outer) <span class="kw">as </span>ArrayRef])
+<a href=#376 id=376 data-nosnippet>376</a> .unwrap();
+<a href=#377 id=377 data-nosnippet>377</a> <span
class="macro">assert!</span>(Arc::ptr_eq(<span
class="kw-2">&</span>projected[<span class="number">0</span>], <span
class="kw-2">&</span>sliced_leaf));
+<a href=#378 id=378 data-nosnippet>378</a> }
+<a href=#379 id=379 data-nosnippet>379</a>
+<a href=#380 id=380 data-nosnippet>380</a> <span class="attr">#[test]
+<a href=#381 id=381 data-nosnippet>381</a> </span><span class="kw">fn
</span>test_record_batch_projector_propagates_nested_parent_nulls() {
+<a href=#382 id=382 data-nosnippet>382</a> <span class="kw">let
</span>(projector, inner_field, leaf_field) = nested_projector();
+<a href=#383 id=383 data-nosnippet>383</a> <span class="kw">let
</span>leaf = Arc::new(Int32Array::from(<span class="macro">vec!</span>[<span
class="prelude-val">Some</span>(<span class="number">10</span>), <span
class="prelude-val">Some</span>(<span class="number">20</span>), <span
class="prelude-val">Some</span>(<span class="number">30</span>), <span
class="prelude-val">None</span>])) <span class="kw">as </span>ArrayRef;
+<a href=#384 id=384 data-nosnippet>384</a> <span class="kw">let
</span>inner = Arc::new(StructArray::new(
+<a href=#385 id=385 data-nosnippet>385</a> Fields::from(<span
class="macro">vec!</span>[leaf_field]),
+<a href=#386 id=386 data-nosnippet>386</a> <span
class="macro">vec!</span>[leaf],
+<a href=#387 id=387 data-nosnippet>387</a> <span
class="prelude-val">Some</span>(NullBuffer::from(<span
class="macro">vec!</span>[<span class="bool-val">true</span>, <span
class="bool-val">true</span>, <span class="bool-val">false</span>, <span
class="bool-val">true</span>])),
+<a href=#388 id=388 data-nosnippet>388</a> )) <span class="kw">as
</span>ArrayRef;
+<a href=#389 id=389 data-nosnippet>389</a> <span class="kw">let
</span>outer = Arc::new(StructArray::new(
+<a href=#390 id=390 data-nosnippet>390</a> Fields::from(<span
class="macro">vec!</span>[inner_field]),
+<a href=#391 id=391 data-nosnippet>391</a> <span
class="macro">vec!</span>[inner],
+<a href=#392 id=392 data-nosnippet>392</a> <span
class="prelude-val">Some</span>(NullBuffer::from(<span
class="macro">vec!</span>[<span class="bool-val">true</span>, <span
class="bool-val">false</span>, <span class="bool-val">true</span>, <span
class="bool-val">true</span>])),
+<a href=#393 id=393 data-nosnippet>393</a> )) <span class="kw">as
</span>ArrayRef;
+<a href=#394 id=394 data-nosnippet>394</a>
+<a href=#395 id=395 data-nosnippet>395</a> <span class="kw">let
</span>projected = projector.project_column(<span
class="kw-2">&</span>[outer]).unwrap();
+<a href=#396 id=396 data-nosnippet>396</a> <span
class="macro">assert_eq!</span>(
+<a href=#397 id=397 data-nosnippet>397</a> projected[<span
class="number">0</span>].as_ref(),
+<a href=#398 id=398 data-nosnippet>398</a> <span
class="kw-2">&</span>Int32Array::from(<span class="macro">vec!</span>[<span
class="prelude-val">Some</span>(<span class="number">10</span>), <span
class="prelude-val">None</span>, <span class="prelude-val">None</span>, <span
class="prelude-val">None</span>])
+<a href=#399 id=399 data-nosnippet>399</a> );
+<a href=#400 id=400 data-nosnippet>400</a> }
+<a href=#401 id=401 data-nosnippet>401</a>
+<a href=#402 id=402 data-nosnippet>402</a> <span class="attr">#[test]
+<a href=#403 id=403 data-nosnippet>403</a> </span><span class="kw">fn
</span>test_field_not_found() {
+<a href=#404 id=404 data-nosnippet>404</a> <span class="kw">let
</span>inner_fields = <span class="macro">vec!</span>[
+<a href=#405 id=405 data-nosnippet>405</a> Field::new(<span
class="string">"inner_field1"</span>, DataType::Int32, <span
class="bool-val">false</span>),
+<a href=#406 id=406 data-nosnippet>406</a> Field::new(<span
class="string">"inner_field2"</span>, DataType::Utf8, <span
class="bool-val">false</span>),
+<a href=#407 id=407 data-nosnippet>407</a> ];
+<a href=#408 id=408 data-nosnippet>408</a>
+<a href=#409 id=409 data-nosnippet>409</a> <span class="kw">let
</span>fields = <span class="macro">vec!</span>[
+<a href=#410 id=410 data-nosnippet>410</a> Field::new(<span
class="string">"field1"</span>, DataType::Int32, <span
class="bool-val">false</span>),
+<a href=#411 id=411 data-nosnippet>411</a> Field::new(
+<a href=#412 id=412 data-nosnippet>412</a> <span
class="string">"field2"</span>,
+<a href=#413 id=413 data-nosnippet>413</a>
DataType::Struct(Fields::from(inner_fields.clone())),
+<a href=#414 id=414 data-nosnippet>414</a> <span
class="bool-val">false</span>,
+<a href=#415 id=415 data-nosnippet>415</a> ),
+<a href=#416 id=416 data-nosnippet>416</a> ];
+<a href=#417 id=417 data-nosnippet>417</a> <span class="kw">let
</span>schema = Arc::new(Schema::new(fields));
+<a href=#418 id=418 data-nosnippet>418</a>
+<a href=#419 id=419 data-nosnippet>419</a> <span class="kw">let
</span>field_id_fetch_func = |field: <span class="kw-2">&</span>Field|
<span class="kw">match </span>field.name().as_str() {
+<a href=#420 id=420 data-nosnippet>420</a> <span
class="string">"field1" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">1</span>)),
+<a href=#421 id=421 data-nosnippet>421</a> <span
class="string">"field2" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">2</span>)),
+<a href=#422 id=422 data-nosnippet>422</a> <span
class="string">"inner_field1" </span>=> <span
class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span
class="number">3</span>)),
+<a href=#423 id=423 data-nosnippet>423</a> <span
class="string">"inner_field2" </span>=> <span
class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span
class="number">4</span>)),
+<a href=#424 id=424 data-nosnippet>424</a> <span class="kw">_
</span>=> <span
class="prelude-val">Err</span>(Error::new(ErrorKind::Unexpected, <span
class="string">"Field id not found"</span>)),
+<a href=#425 id=425 data-nosnippet>425</a> };
+<a href=#426 id=426 data-nosnippet>426</a> <span class="kw">let
</span>projector =
+<a href=#427 id=427 data-nosnippet>427</a>
RecordBatchProjector::new(schema.clone(), <span class="kw-2">&</span>[<span
class="number">1</span>, <span class="number">5</span>], field_id_fetch_func,
|<span class="kw">_</span>| <span class="bool-val">true</span>);
+<a href=#428 id=428 data-nosnippet>428</a>
+<a href=#429 id=429 data-nosnippet>429</a> <span
class="macro">assert!</span>(projector.is_err());
+<a href=#430 id=430 data-nosnippet>430</a> }
+<a href=#431 id=431 data-nosnippet>431</a>
+<a href=#432 id=432 data-nosnippet>432</a> <span class="attr">#[test]
+<a href=#433 id=433 data-nosnippet>433</a> </span><span class="kw">fn
</span>test_field_not_reachable() {
+<a href=#434 id=434 data-nosnippet>434</a> <span class="kw">let
</span>inner_fields = <span class="macro">vec!</span>[
+<a href=#435 id=435 data-nosnippet>435</a> Field::new(<span
class="string">"inner_field1"</span>, DataType::Int32, <span
class="bool-val">false</span>),
+<a href=#436 id=436 data-nosnippet>436</a> Field::new(<span
class="string">"inner_field2"</span>, DataType::Utf8, <span
class="bool-val">false</span>),
+<a href=#437 id=437 data-nosnippet>437</a> ];
+<a href=#438 id=438 data-nosnippet>438</a>
+<a href=#439 id=439 data-nosnippet>439</a> <span class="kw">let
</span>fields = <span class="macro">vec!</span>[
+<a href=#440 id=440 data-nosnippet>440</a> Field::new(<span
class="string">"field1"</span>, DataType::Int32, <span
class="bool-val">false</span>),
+<a href=#441 id=441 data-nosnippet>441</a> Field::new(
+<a href=#442 id=442 data-nosnippet>442</a> <span
class="string">"field2"</span>,
+<a href=#443 id=443 data-nosnippet>443</a>
DataType::Struct(Fields::from(inner_fields.clone())),
+<a href=#444 id=444 data-nosnippet>444</a> <span
class="bool-val">false</span>,
+<a href=#445 id=445 data-nosnippet>445</a> ),
+<a href=#446 id=446 data-nosnippet>446</a> ];
+<a href=#447 id=447 data-nosnippet>447</a> <span class="kw">let
</span>schema = Arc::new(Schema::new(fields));
+<a href=#448 id=448 data-nosnippet>448</a>
+<a href=#449 id=449 data-nosnippet>449</a> <span class="kw">let
</span>field_id_fetch_func = |field: <span class="kw-2">&</span>Field|
<span class="kw">match </span>field.name().as_str() {
+<a href=#450 id=450 data-nosnippet>450</a> <span
class="string">"field1" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">1</span>)),
+<a href=#451 id=451 data-nosnippet>451</a> <span
class="string">"field2" </span>=> <span class="prelude-val">Ok</span>(<span
class="prelude-val">Some</span>(<span class="number">2</span>)),
+<a href=#452 id=452 data-nosnippet>452</a> <span
class="string">"inner_field1" </span>=> <span
class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span
class="number">3</span>)),
+<a href=#453 id=453 data-nosnippet>453</a> <span
class="string">"inner_field2" </span>=> <span
class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span
class="number">4</span>)),
+<a href=#454 id=454 data-nosnippet>454</a> <span class="kw">_
</span>=> <span
class="prelude-val">Err</span>(Error::new(ErrorKind::Unexpected, <span
class="string">"Field id not found"</span>)),
+<a href=#455 id=455 data-nosnippet>455</a> };
+<a href=#456 id=456 data-nosnippet>456</a> <span class="kw">let
</span>projector =
+<a href=#457 id=457 data-nosnippet>457</a>
RecordBatchProjector::new(schema.clone(), <span class="kw-2">&</span>[<span
class="number">3</span>], field_id_fetch_func, |<span class="kw">_</span>|
<span class="bool-val">false</span>);
+<a href=#458 id=458 data-nosnippet>458</a> <span
class="macro">assert!</span>(projector.is_err());
+<a href=#459 id=459 data-nosnippet>459</a>
+<a href=#460 id=460 data-nosnippet>460</a> <span class="kw">let
</span>projector =
+<a href=#461 id=461 data-nosnippet>461</a>
RecordBatchProjector::new(schema.clone(), <span class="kw-2">&</span>[<span
class="number">3</span>], field_id_fetch_func, |<span class="kw">_</span>|
<span class="bool-val">true</span>);
+<a href=#462 id=462 data-nosnippet>462</a> <span
class="macro">assert!</span>(projector.is_ok());
+<a href=#463 id=463 data-nosnippet>463</a> }
+<a href=#464 id=464 data-nosnippet>464</a>
+<a href=#465 id=465 data-nosnippet>465</a> <span class="attr">#[test]
+<a href=#466 id=466 data-nosnippet>466</a> </span><span class="kw">fn
</span>test_from_iceberg_schema() {
+<a href=#467 id=467 data-nosnippet>467</a> <span class="kw">let
</span>iceberg_schema = IcebergSchema::builder()
+<a href=#468 id=468 data-nosnippet>468</a> .with_schema_id(<span
class="number">0</span>)
+<a href=#469 id=469 data-nosnippet>469</a> .with_fields(<span
class="macro">vec!</span>[
+<a href=#470 id=470 data-nosnippet>470</a>
NestedField::required(<span class="number">1</span>, <span
class="string">"id"</span>, Type::Primitive(PrimitiveType::Int)).into(),
+<a href=#471 id=471 data-nosnippet>471</a>
NestedField::required(<span class="number">2</span>, <span
class="string">"name"</span>, Type::Primitive(PrimitiveType::String)).into(),
+<a href=#472 id=472 data-nosnippet>472</a>
NestedField::optional(<span class="number">3</span>, <span
class="string">"age"</span>, Type::Primitive(PrimitiveType::Int)).into(),
+<a href=#473 id=473 data-nosnippet>473</a> ])
+<a href=#474 id=474 data-nosnippet>474</a> .build()
+<a href=#475 id=475 data-nosnippet>475</a> .unwrap();
+<a href=#476 id=476 data-nosnippet>476</a>
+<a href=#477 id=477 data-nosnippet>477</a> <span class="kw">let
</span>projector =
+<a href=#478 id=478 data-nosnippet>478</a>
RecordBatchProjector::from_iceberg_schema(Arc::new(iceberg_schema), <span
class="kw-2">&</span>[<span class="number">1</span>, <span
class="number">3</span>]).unwrap();
+<a href=#479 id=479 data-nosnippet>479</a>
+<a href=#480 id=480 data-nosnippet>480</a> <span
class="macro">assert_eq!</span>(projector.field_indices.len(), <span
class="number">2</span>);
+<a href=#481 id=481 data-nosnippet>481</a> <span
class="macro">assert_eq!</span>(projector.projected_schema_ref().fields().len(),
<span class="number">2</span>);
+<a href=#482 id=482 data-nosnippet>482</a> <span
class="macro">assert_eq!</span>(projector.projected_schema_ref().field(<span
class="number">0</span>).name(), <span class="string">"id"</span>);
+<a href=#483 id=483 data-nosnippet>483</a> <span
class="macro">assert_eq!</span>(projector.projected_schema_ref().field(<span
class="number">1</span>).name(), <span class="string">"age"</span>);
+<a href=#484 id=484 data-nosnippet>484</a> }
+<a href=#485 id=485 data-nosnippet>485</a>}
</code></pre></div></section></main></body></html>
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