rok commented on PR #14472:
URL: https://github.com/apache/arrow/pull/14472#issuecomment-1304761631
@jonathanswenson the new jars now build for an issue I've been having. I've
tried your example:
```
import org.apache.arrow.memory.RootAllocator;
import org.apache.arrow.vector.types.pojo.Field;
import org.apache.arrow.vector.types.pojo.FieldType;
import org.apache.arrow.vector.types.pojo.ArrowType;
import java.util.ArrayList;
import java.util.List;
import org.apache.arrow.c.ArrowSchema;
import org.apache.arrow.c.Data;
import org.apache.arrow.vector.types.pojo.Schema;
public class TestDataset {
public static void main(String[] args) {
RootAllocator allocator = new RootAllocator();
Field field = new Field("int_field", FieldType.nullable(new
ArrowType.Int(32, true)), null);
List<Field> fieldList = new ArrayList<>();
fieldList.add(field);
Schema schema = new Schema(fieldList, null);
ArrowSchema cSchema = ArrowSchema.allocateNew(allocator);
Data.exportSchema(allocator, schema, null, cSchema);
}
}
```
```
10:53:07.283 [main] DEBUG
org.apache.arrow.memory.rounding.DefaultRoundingPolicy -
-Dorg.apache.memory.allocator.maxOrder: 11
Exception in thread "main" java.lang.VerifyError: Bad type on operand stack
Exception Details:
Location:
org/apache/arrow/vector/types/pojo/ArrowType.getInt(Lorg/apache/arrow/flatbuf/Field;)Lorg/apache/arrow/vector/types/pojo/ArrowType$Int;
@8: invokevirtual
Reason:
Type 'org/apache/arrow/flatbuf/Int' (current frame, stack[1]) is not
assignable to 'com/google/flatbuffers/Table'
Current Frame:
bci: @8
flags: { }
locals: { 'org/apache/arrow/flatbuf/Field' }
stack: { 'org/apache/arrow/flatbuf/Field',
'org/apache/arrow/flatbuf/Int' }
Bytecode:
0000000: 2abb 0026 59b7 0027 b600 05c0 0026 4cbb
0000010: 002a 592b b600 282b b600 29b7 002b b0
at TestDataset.main(TestDataset.java:15)
```
I downloaded and imported:
```
arrow-algorithm-11.0.0-SNAPSHOT.jar
arrow-c-data-11.0.0-SNAPSHOT.jar
arrow-dataset-11.0.0-SNAPSHOT.jar
arrow-memory-core-11.0.0-SNAPSHOT.jar
arrow-memory-netty-11.0.0-SNAPSHOT.jar
arrow-tools-11.0.0-SNAPSHOT-jar-with-dependencies.jar
arrow-tools-11.0.0-SNAPSHOT.jar
arrow-vector-11.0.0-SNAPSHOT-shade-format-flatbuffers.jar
arrow-vector-11.0.0-SNAPSHOT.jar
```
But I don't think you need all of these.
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