was able to acquire all union child writers

extensions/barrage/src/main/java/io/deephaven/extensions/barrage/BarrageSnapshotPerformanceLoggerImpl.java

@@ -27,7 +27,7 @@ public BarrageSnapshotPerformanceLoggerImpl() {
                 ExecutionContext.getContext().getUpdateGraph(),
                 BarrageSnapshotPerformanceLoggerImpl.class.getName(),
                 Map.of(
-                        BaseTable.BARRAGE_PERFORMANCE_KEY_ATTRIBUTE,
+                        Table.BARRAGE_PERFORMANCE_KEY_ATTRIBUTE,
                         BarrageSnapshotPerformanceLogger.getDefaultTableName()));
         blink = adapter.table();
     }

extensions/barrage/src/main/java/io/deephaven/extensions/barrage/BarrageSubscriptionPerformanceLoggerImpl.java

@@ -28,7 +28,7 @@ public BarrageSubscriptionPerformanceLoggerImpl() {
                 ExecutionContext.getContext().getUpdateGraph(),
                 BarrageSubscriptionPerformanceLoggerImpl.class.getName(),
                 Map.of(
-                        BaseTable.BARRAGE_PERFORMANCE_KEY_ATTRIBUTE,
+                        Table.BARRAGE_PERFORMANCE_KEY_ATTRIBUTE,
                         BarrageSubscriptionPerformanceLogger.getDefaultTableName()));
         blink = adapter.table();
     }

extensions/barrage/src/main/java/io/deephaven/extensions/barrage/BarrageTypeInfo.java

@@ -4,14 +4,13 @@
 package io.deephaven.extensions.barrage;
 
 import io.deephaven.chunk.ChunkType;
-import org.apache.arrow.flatbuf.Field;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 /**
  * Describes type info used by factory implementations when creating a ChunkReader.
  */
-public class BarrageTypeInfo {
+public class BarrageTypeInfo<FIELD_TYPE> {
     /**
      * Factory method to create a TypeInfo instance.
      *
@@ -20,22 +19,22 @@ public class BarrageTypeInfo {
      * @param arrowField the Arrow type to be read into the chunk
      * @return a TypeInfo instance
      */
-    public static BarrageTypeInfo make(
+    public static <FIELD_TYPE> BarrageTypeInfo<FIELD_TYPE> make(
             @NotNull final Class<?> type,
             @Nullable final Class<?> componentType,
-            @NotNull final Field arrowField) {
-        return new BarrageTypeInfo(type, componentType, arrowField);
+            @NotNull final FIELD_TYPE arrowField) {
+        return new BarrageTypeInfo<>(type, componentType, arrowField);
     }
 
     private final Class<?> type;
     @Nullable
     private final Class<?> componentType;
-    private final Field arrowField;
+    private final FIELD_TYPE arrowField;
 
     public BarrageTypeInfo(
             @NotNull final Class<?> type,
             @Nullable final Class<?> componentType,
-            @NotNull final Field arrowField) {
+            @NotNull final FIELD_TYPE arrowField) {
         this.type = type;
         this.componentType = componentType;
         this.arrowField = arrowField;
@@ -50,7 +49,7 @@ public Class<?> componentType() {
         return componentType;
     }
 
-    public Field arrowField() {
+    public FIELD_TYPE arrowField() {
         return arrowField;
     }
 

extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ByteChunkReader.java

@@ -13,7 +13,8 @@
 import io.deephaven.chunk.WritableLongChunk;
 import io.deephaven.chunk.WritableObjectChunk;
 import io.deephaven.chunk.attributes.Values;
-import io.deephaven.extensions.barrage.BarrageOptions;import io.deephaven.util.datastructures.LongSizedDataStructure;
+import io.deephaven.extensions.barrage.BarrageOptions;
+import io.deephaven.util.datastructures.LongSizedDataStructure;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 

extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ByteChunkWriter.java

@@ -12,7 +12,8 @@
 import io.deephaven.engine.rowset.RowSet;
 import com.google.common.io.LittleEndianDataOutputStream;
 import io.deephaven.UncheckedDeephavenException;
-import io.deephaven.extensions.barrage.BarrageOptions;import io.deephaven.util.datastructures.LongSizedDataStructure;
+import io.deephaven.extensions.barrage.BarrageOptions;
+import io.deephaven.util.datastructures.LongSizedDataStructure;
 import io.deephaven.chunk.ByteChunk;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;

extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ChunkReader.java

@@ -8,6 +8,7 @@
 import io.deephaven.extensions.barrage.BarrageOptions;
 import io.deephaven.extensions.barrage.BarrageTypeInfo;
 import io.deephaven.util.annotations.FinalDefault;
+import org.apache.arrow.flatbuf.Field;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -35,7 +36,7 @@ interface Factory {
          * @return a ChunkReader based on the given options, factory, and type to read
          */
         <T extends WritableChunk<Values>> ChunkReader<T> newReader(
-                @NotNull BarrageTypeInfo typeInfo,
+                @NotNull BarrageTypeInfo<Field> typeInfo,
                 @NotNull BarrageOptions options);
     }
 

extensions/barrage/src/main/java/io/deephaven/extensions/barrage/chunk/ChunkWriter.java

@@ -13,6 +13,7 @@
 import io.deephaven.util.datastructures.LongSizedDataStructure;
 import io.deephaven.chunk.Chunk;
 import io.deephaven.util.referencecounting.ReferenceCounted;
+import org.apache.arrow.flatbuf.Field;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -33,7 +34,7 @@ interface Factory {
          * @return a ChunkWriter based on the given options, factory, and type to write
          */
         <T extends Chunk<Values>> ChunkWriter<T> newWriter(
-                @NotNull BarrageTypeInfo typeInfo);
+                @NotNull BarrageTypeInfo<Field> typeInfo);
     }
 
     /**