feat: Barrage Refactor Read/Write Chunk Factories (#6065)

This is an overhaul of type mapping from arrow to deephaven columns. We
can now coerce from many kinds of types, enabling widening / truncating
and conversion between types. For example uint64_t is now mapped to
BigInteger by default, but can be explicitly mapped to `long.class` (may
overflow).

To set an explicit mapping set the schema's column attribute "deephaven:type" to the
canonical name of the class.

Fixes #58 (custom type serialization / deserialization).
Fixes #936 (ColumnConversionModes is being replaced with easy to
integrate custom serialization).
Fixes #2984 (refactoring has good interface documentation).
Fixes #3403 (by supporting a variety of mappings, these now must match
client wiring).
Fixes #5258 (snapshot/subscribe methods with default w2w options).
Fixes #5453 (support other Timestamp arrow wire encodings).
Fixes #5864 (support for uint64_t).
Fixes #6114 (supports ObjectVector<Boolean> properly).

cpp-client/build.gradle

@@ -114,6 +114,7 @@ def testCppClient = Docker.registerDockerTask(project, 'testCppClient') {
         environmentVariable 'DH_HOST', deephavenDocker.containerName.get()
         environmentVariable 'DH_PORT', '10000'
     }
+    waitTimeMinutes = 1
     containerDependencies.dependsOn = [deephavenDocker.healthyTask]
     containerDependencies.finalizedBy = deephavenDocker.endTask
     network = deephavenDocker.networkName.get()

cpp-client/deephaven/tests/src/time_unit_test.cc

@@ -72,7 +72,7 @@ TEST_CASE("Uploaded Arrow Timestamp units get normalized to nanos at FillChunk t
   }
 }
 
-TEST_CASE("Uploaded Arrow Time64 units get normalized to nanos at FillChunk time", "[timeunit][.hidden]") {
+TEST_CASE("Uploaded Arrow Time64 units get normalized to nanos at FillChunk time", "[timeunit]") {
   auto tm = TableMakerForTests::Create();
 
   std::vector<std::optional<InternalLocalTime<arrow::TimeUnit::MICRO>>> lt_micro;

engine/api/src/main/java/io/deephaven/engine/table/ColumnDefinition.java

@@ -400,6 +400,15 @@ public <Other> ColumnDefinition<Other> withDataType(@NotNull final Class<Other>
                 : fromGenericType(name, newDataType, componentType, columnType);
     }
 
+    public <Other> ColumnDefinition<Other> withDataType(
+            @NotNull final Class<Other> newDataType,
+            @Nullable final Class<?> newComponentType) {
+        // noinspection unchecked
+        return dataType == newDataType && componentType == newComponentType
+                ? (ColumnDefinition<Other>) this
+                : fromGenericType(name, newDataType, newComponentType, columnType);
+    }
+
     public ColumnDefinition<?> withName(@NotNull final String newName) {
         return newName.equals(name) ? this : new ColumnDefinition<>(newName, dataType, componentType, columnType);
     }

engine/api/src/main/java/io/deephaven/engine/table/Table.java

@@ -223,6 +223,12 @@ public interface Table extends
      * Set this attribute to enable collection of barrage performance stats.
      */
     String BARRAGE_PERFORMANCE_KEY_ATTRIBUTE = "BarragePerformanceTableKey";
+    /**
+     * Set an Apache Arrow POJO Schema to this attribute to control the column encoding used for barrage serialization.
+     * <p>
+     * See {@code org.apache.arrow.vector.types.pojo.Schema}.
+     */
+    String BARRAGE_SCHEMA_ATTRIBUTE = "BarrageSchema";
 
     // -----------------------------------------------------------------------------------------------------------------
     // ColumnSources for fetching data by row key

engine/chunk/src/main/java/io/deephaven/chunk/BooleanChunk.java

@@ -7,6 +7,7 @@
 // @formatter:off
 package io.deephaven.chunk;
 
+import io.deephaven.util.QueryConstants;
 import io.deephaven.util.type.ArrayTypeUtils;
 import io.deephaven.chunk.attributes.Any;
 
@@ -74,6 +75,12 @@ public final boolean get(int index) {
         return data[offset + index];
     }
 
+    // region isNull
+    public final boolean isNull(int index) {
+        return false;
+    }
+    // endregion isNull
+
     @Override
     public BooleanChunk<ATTR> slice(int offset, int capacity) {
         ChunkHelpers.checkSliceArgs(size, offset, capacity);

engine/chunk/src/main/java/io/deephaven/chunk/ByteChunk.java

@@ -7,6 +7,7 @@
 // @formatter:off
 package io.deephaven.chunk;
 
+import io.deephaven.util.QueryConstants;
 import io.deephaven.util.type.ArrayTypeUtils;
 import io.deephaven.chunk.attributes.Any;
 
@@ -78,6 +79,12 @@ public final byte get(int index) {
         return data[offset + index];
     }
 
+    // region isNull
+    public final boolean isNull(int index) {
+        return data[offset + index] == QueryConstants.NULL_BYTE;
+    }
+    // endregion isNull
+
     @Override
     public ByteChunk<ATTR> slice(int offset, int capacity) {
         ChunkHelpers.checkSliceArgs(size, offset, capacity);

engine/chunk/src/main/java/io/deephaven/chunk/CharChunk.java

@@ -3,6 +3,7 @@
 //
 package io.deephaven.chunk;
 
+import io.deephaven.util.QueryConstants;
 import io.deephaven.util.type.ArrayTypeUtils;
 import io.deephaven.chunk.attributes.Any;
 
@@ -73,6 +74,12 @@ public final char get(int index) {
         return data[offset + index];
     }
 
+    // region isNull
+    public final boolean isNull(int index) {
+        return data[offset + index] == QueryConstants.NULL_CHAR;
+    }
+    // endregion isNull
+
     @Override
     public CharChunk<ATTR> slice(int offset, int capacity) {
         ChunkHelpers.checkSliceArgs(size, offset, capacity);

engine/chunk/src/main/java/io/deephaven/chunk/DoubleChunk.java

@@ -7,6 +7,7 @@
 // @formatter:off
 package io.deephaven.chunk;
 
+import io.deephaven.util.QueryConstants;
 import io.deephaven.util.type.ArrayTypeUtils;
 import io.deephaven.chunk.attributes.Any;
 
@@ -77,6 +78,12 @@ public final double get(int index) {
         return data[offset + index];
     }
 
+    // region isNull
+    public final boolean isNull(int index) {
+        return data[offset + index] == QueryConstants.NULL_DOUBLE;
+    }
+    // endregion isNull
+
     @Override
     public DoubleChunk<ATTR> slice(int offset, int capacity) {
         ChunkHelpers.checkSliceArgs(size, offset, capacity);

engine/chunk/src/main/java/io/deephaven/chunk/FloatChunk.java

@@ -7,6 +7,7 @@
 // @formatter:off
 package io.deephaven.chunk;
 
+import io.deephaven.util.QueryConstants;
 import io.deephaven.util.type.ArrayTypeUtils;
 import io.deephaven.chunk.attributes.Any;
 
@@ -77,6 +78,12 @@ public final float get(int index) {
         return data[offset + index];
     }
 
+    // region isNull
+    public final boolean isNull(int index) {
+        return data[offset + index] == QueryConstants.NULL_FLOAT;
+    }
+    // endregion isNull
+
     @Override
     public FloatChunk<ATTR> slice(int offset, int capacity) {
         ChunkHelpers.checkSliceArgs(size, offset, capacity);

engine/chunk/src/main/java/io/deephaven/chunk/IntChunk.java

@@ -7,6 +7,7 @@
 // @formatter:off
 package io.deephaven.chunk;
 
+import io.deephaven.util.QueryConstants;
 import io.deephaven.util.type.ArrayTypeUtils;
 import io.deephaven.chunk.attributes.Any;
 
@@ -77,6 +78,12 @@ public final int get(int index) {
         return data[offset + index];
     }
 
+    // region isNull
+    public final boolean isNull(int index) {
+        return data[offset + index] == QueryConstants.NULL_INT;
+    }
+    // endregion isNull
+
     @Override
     public IntChunk<ATTR> slice(int offset, int capacity) {
         ChunkHelpers.checkSliceArgs(size, offset, capacity);

engine/chunk/src/main/java/io/deephaven/chunk/LongChunk.java

@@ -7,6 +7,7 @@
 // @formatter:off
 package io.deephaven.chunk;
 
+import io.deephaven.util.QueryConstants;
 import io.deephaven.util.type.ArrayTypeUtils;
 import io.deephaven.chunk.attributes.Any;
 
@@ -77,6 +78,12 @@ public final long get(int index) {
         return data[offset + index];
     }
 
+    // region isNull
+    public final boolean isNull(int index) {
+        return data[offset + index] == QueryConstants.NULL_LONG;
+    }
+    // endregion isNull
+
     @Override
     public LongChunk<ATTR> slice(int offset, int capacity) {
         ChunkHelpers.checkSliceArgs(size, offset, capacity);

engine/chunk/src/main/java/io/deephaven/chunk/ObjectChunk.java

@@ -7,6 +7,7 @@
 // @formatter:off
 package io.deephaven.chunk;
 
+import io.deephaven.util.QueryConstants;
 import io.deephaven.util.type.ArrayTypeUtils;
 import io.deephaven.chunk.attributes.Any;
 
@@ -77,6 +78,12 @@ public final T get(int index) {
         return data[offset + index];
     }
 
+    // region isNull
+    public final boolean isNull(int index) {
+        return data[offset + index] == null;
+    }
+    // endregion isNull
+
     @Override
     public ObjectChunk<T, ATTR> slice(int offset, int capacity) {
         ChunkHelpers.checkSliceArgs(size, offset, capacity);

engine/chunk/src/main/java/io/deephaven/chunk/ResettableReadOnlyChunk.java

@@ -10,7 +10,8 @@
  * {@link Chunk} that may have its backing storage reset to a slice of that belonging to another {@link Chunk} or a
  * native array.
  */
-public interface ResettableReadOnlyChunk<ATTR_BASE extends Any> extends ResettableChunk<ATTR_BASE>, PoolableChunk {
+public interface ResettableReadOnlyChunk<ATTR_BASE extends Any>
+        extends ResettableChunk<ATTR_BASE>, PoolableChunk<ATTR_BASE> {
 
     /**
      * Reset the data and bounds of this chunk to a range or sub-range of the specified {@link Chunk}.

engine/chunk/src/main/java/io/deephaven/chunk/ResettableWritableChunk.java

@@ -11,7 +11,7 @@
  * {@link WritableChunk} or a native array.
  */
 public interface ResettableWritableChunk<ATTR_BASE extends Any>
-        extends ResettableChunk<ATTR_BASE>, WritableChunk<ATTR_BASE>, PoolableChunk {
+        extends ResettableChunk<ATTR_BASE>, WritableChunk<ATTR_BASE>, PoolableChunk<ATTR_BASE> {
 
     @Override
     <ATTR extends ATTR_BASE> WritableChunk<ATTR> resetFromChunk(WritableChunk<ATTR> other, int offset, int capacity);

engine/chunk/src/main/java/io/deephaven/chunk/ShortChunk.java

@@ -7,6 +7,7 @@
 // @formatter:off
 package io.deephaven.chunk;
 
+import io.deephaven.util.QueryConstants;
 import io.deephaven.util.type.ArrayTypeUtils;
 import io.deephaven.chunk.attributes.Any;
 
@@ -77,6 +78,12 @@ public final short get(int index) {
         return data[offset + index];
     }
 
+    // region isNull
+    public final boolean isNull(int index) {
+        return data[offset + index] == QueryConstants.NULL_SHORT;
+    }
+    // endregion isNull
+
     @Override
     public ShortChunk<ATTR> slice(int offset, int capacity) {
         ChunkHelpers.checkSliceArgs(size, offset, capacity);

engine/chunk/src/main/java/io/deephaven/chunk/WritableChunk.java

@@ -14,7 +14,7 @@
  *
  * @param <ATTR> Descriptive attribute that applies to the elements stored within this WritableChunk
  */
-public interface WritableChunk<ATTR extends Any> extends Chunk<ATTR>, PoolableChunk {
+public interface WritableChunk<ATTR extends Any> extends Chunk<ATTR>, PoolableChunk<ATTR> {
     @Override
     WritableChunk<ATTR> slice(int offset, int capacity);
 

engine/chunk/src/main/java/io/deephaven/chunk/sized/SizedChunk.java

@@ -37,7 +37,7 @@ public WritableChunk<T> get() {
 
     /**
      * Ensure the underlying chunk has a capacity of at least {@code capacity}.
-     *
+     * <p>
      * The data and size of the returned chunk are undefined.
      *
      * @param capacity the minimum capacity for the chunk.
@@ -56,9 +56,9 @@ public WritableChunk<T> ensureCapacity(int capacity) {
 
     /**
      * Ensure the underlying chunk has a capacity of at least {@code capacity}.
-     *
+     * <p>
      * If the chunk has existing data, then it is copied to the new chunk.
-     *
+     * <p>
      * If the underlying chunk already exists, then the size of the chunk is the original size. If the chunk did not
      * exist, then the size of the returned chunk is zero.
      *

engine/chunk/src/main/java/io/deephaven/chunk/util/pools/PoolableChunk.java

@@ -4,11 +4,12 @@
 package io.deephaven.chunk.util.pools;
 
 import io.deephaven.chunk.Chunk;
+import io.deephaven.chunk.attributes.Any;
 import io.deephaven.util.SafeCloseable;
 
 /**
  * Marker interface for {@link Chunk} subclasses that can be kept with in a {@link ChunkPool}, and whose
  * {@link #close()} method will return them to the appropriate pool.
  */
-public interface PoolableChunk extends SafeCloseable {
+public interface PoolableChunk<ATTR extends Any> extends Chunk<ATTR>, SafeCloseable {
 }

engine/table/src/main/java/io/deephaven/engine/table/impl/BaseTable.java

@@ -360,6 +360,15 @@ public enum CopyAttributeOperation {
                 CopyAttributeOperation.Flatten, // add flatten for now because web flattens all views
                 CopyAttributeOperation.Preview));
 
+        tempMap.put(BARRAGE_SCHEMA_ATTRIBUTE, EnumSet.of(
+                CopyAttributeOperation.Filter,
+                CopyAttributeOperation.FirstBy,
+                CopyAttributeOperation.Flatten,
+                CopyAttributeOperation.LastBy,
+                CopyAttributeOperation.PartitionBy,
+                CopyAttributeOperation.Reverse,
+                CopyAttributeOperation.Sort));
+
         attributeToCopySet = Collections.unmodifiableMap(tempMap);
     }
 

engine/table/src/main/java/io/deephaven/engine/table/impl/sources/ReinterpretUtils.java

@@ -4,6 +4,7 @@
 package io.deephaven.engine.table.impl.sources;
 
 import io.deephaven.chunk.ChunkType;
+import io.deephaven.engine.table.ColumnDefinition;
 import io.deephaven.engine.table.ColumnSource;
 import io.deephaven.engine.table.WritableColumnSource;
 import org.jetbrains.annotations.NotNull;
@@ -212,6 +213,27 @@ public static ColumnSource<?>[] maybeConvertToPrimitive(@NotNull final ColumnSou
         return result;
     }
 
+    /**
+     * If {@code columnDefinition.getDataType()} or {@code columnDefinition.getComponentType} are something that we
+     * prefer to handle as a primitive, do the appropriate conversion.
+     *
+     * @param columnDefinition The column definition to convert
+     * @return if possible, {@code columnDefinition} converted to a primitive, otherewise {@code columnDefinition}
+     */
+    @NotNull
+    public static ColumnDefinition<?> maybeConvertToPrimitive(@NotNull final ColumnDefinition<?> columnDefinition) {
+        final Class<?> dataType = ReinterpretUtils.maybeConvertToPrimitiveDataType(columnDefinition.getDataType());
+        Class<?> componentType = columnDefinition.getComponentType();
+        if (componentType != null) {
+            componentType = ReinterpretUtils.maybeConvertToPrimitiveDataType(componentType);
+        }
+        if (columnDefinition.getDataType() == dataType
+                && columnDefinition.getComponentType() == componentType) {
+            return columnDefinition;
+        }
+        return columnDefinition.withDataType(dataType, componentType);
+    }
+
     /**
      * If {@code source} is something that we prefer to handle as a primitive, do the appropriate conversion.
      *
@@ -265,6 +287,7 @@ public static ChunkType maybeConvertToWritablePrimitiveChunkType(@NotNull final
         }
         if (dataType == Instant.class) {
             // Note that storing ZonedDateTime as a primitive is lossy on the time zone.
+            // TODO (https://github.com/deephaven/deephaven-core/issues/5241): Inconsistent handling of ZonedDateTime
             return ChunkType.Long;
         }
         return ChunkType.fromElementType(dataType);
@@ -283,6 +306,8 @@ public static Class<?> maybeConvertToPrimitiveDataType(@NotNull final Class<?> d
             return byte.class;
         }
         if (dataType == Instant.class || dataType == ZonedDateTime.class) {
+            // Note: not all ZonedDateTime sources are convertible to long, so this doesn't match column source behavior
+            // TODO (https://github.com/deephaven/deephaven-core/issues/5241): Inconsistent handling of ZonedDateTime
             return long.class;
         }
         return dataType;

engine/table/src/main/java/io/deephaven/engine/updategraph/impl/PeriodicUpdateGraph.java

@@ -100,6 +100,11 @@ public static Builder newBuilder(final String name) {
 
     public static final String DEFAULT_TARGET_CYCLE_DURATION_MILLIS_PROP =
             "PeriodicUpdateGraph.targetCycleDurationMillis";
+
+    public static int getDefaultTargetCycleDurationMillis() {
+        return Configuration.getInstance().getIntegerWithDefault(DEFAULT_TARGET_CYCLE_DURATION_MILLIS_PROP, 1000);
+    }
+
     private final long defaultTargetCycleDurationMillis;
     private volatile long targetCycleDurationMillis;
     private final ThreadInitializationFactory threadInitializationFactory;
@@ -252,7 +257,7 @@ public boolean isCycleOnBudget(long cycleTimeNanos) {
      * Resets the run cycle time to the default target configured via the {@link Builder} setting.
      *
      * @implNote If the {@link Builder#targetCycleDurationMillis(long)} property is not set, this value defaults to
-     *           {@link Builder#DEFAULT_TARGET_CYCLE_DURATION_MILLIS_PROP} which defaults to 1000ms.
+     *           {@link #DEFAULT_TARGET_CYCLE_DURATION_MILLIS_PROP} which defaults to 1000ms.
      */
     @SuppressWarnings("unused")
     public void resetTargetCycleDuration() {
@@ -1166,8 +1171,7 @@ public static PeriodicUpdateGraph getInstance(final String name) {
     public static final class Builder {
         private final boolean allowUnitTestMode =
                 Configuration.getInstance().getBooleanWithDefault(ALLOW_UNIT_TEST_MODE_PROP, false);
-        private long targetCycleDurationMillis =
-                Configuration.getInstance().getIntegerWithDefault(DEFAULT_TARGET_CYCLE_DURATION_MILLIS_PROP, 1000);
+        private long targetCycleDurationMillis = getDefaultTargetCycleDurationMillis();
         private long minimumCycleDurationToLogNanos = DEFAULT_MINIMUM_CYCLE_DURATION_TO_LOG_NANOSECONDS;
 
         private String name;