alamb commented on code in PR #8998:
URL: https://github.com/apache/arrow-rs/pull/8998#discussion_r2620330328
##########
arrow-json/Cargo.toml:
##########
@@ -35,12 +35,18 @@ bench = false
[package.metadata.docs.rs]
all-features = true
+[features]
+default = []
+variant_experimental = []
+
[dependencies]
arrow-array = { workspace = true }
arrow-buffer = { workspace = true }
arrow-cast = { workspace = true }
arrow-data = { workspace = true }
arrow-schema = { workspace = true }
+parquet-variant-compute = { workspace = true }
Review Comment:
yeah this is kind of wacky -- that arrow now depends on some sub part of
parquet
##########
arrow-json/src/reader/variant_array.rs:
##########
@@ -0,0 +1,99 @@
+// 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 arrow_array::{Array, StructArray};
+use parquet_variant::{ObjectFieldBuilder, Variant, VariantBuilder,
VariantBuilderExt};
+use parquet_variant_compute::VariantArrayBuilder;
+use arrow_data::ArrayData;
+use arrow_schema::ArrowError;
+
+use crate::reader::ArrayDecoder;
+use crate::reader::tape::{Tape, TapeElement};
+
+#[derive(Default)]
+pub struct VariantArrayDecoder {}
+
+impl ArrayDecoder for VariantArrayDecoder {
Review Comment:
this is so great
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