Basically complete.

Still to rename back getBoxed and getPrimitive.
Failing 10 tests.
Rebase next.

distribution/lib/Standard/Table/0.0.0-dev/src/Column.enso

@@ -2362,7 +2362,7 @@ type Column
     to_js_object self =
         name = self.java_column.getName
         storage = self.java_column.getStorage
-        storage_proxy = Array_Proxy.new storage.size i-> storage.getBoxed i
+        storage_proxy = Array_Proxy.new storage.getSize i-> storage.getBoxed i
         storage_json = Vector.from_polyglot_array storage_proxy
         JS_Object.from_pairs [["name", name], ["data", storage_json]]
 

distribution/lib/Standard/Table/0.0.0-dev/src/Internal/Column_Ops.enso

@@ -12,7 +12,7 @@ map_over_storage : Column -> (Any -> Text) -> (Integer -> Any) -> Boolean -> Pro
 map_over_storage input_column function builder skip_nothing=True on_problems:Problem_Behavior=..Report_Warning =
     problem_builder = Problem_Builder.new
     input_storage = input_column.java_column.getStorage
-    num_input_rows = input_storage.size
+    num_input_rows = input_storage.getSize
     output_storage_builder = builder num_input_rows
     0.up_to num_input_rows . each i->
         input_value = input_storage.getBoxed i
@@ -33,12 +33,12 @@ map_2_over_storage : Column -> Column -> (Any -> Any -> Text) -> (Integer -> Any
 map_2_over_storage input_column_0 input_column_1 function builder skip_nothing=True =
     input_storage_0 = input_column_0.java_column.getStorage
     input_storage_1 = input_column_1.java_column.getStorage
-    case input_storage_0.size != input_storage_1.size of
+    case input_storage_0.getSize != input_storage_1.getSize of
         True ->
-            msg = "Column lengths differ: " + input_storage_0.size.to_text + " != " + input_storage_1.size.to_text
+            msg = "Column lengths differ: " + input_storage_0.getSize.to_text + " != " + input_storage_1.getSize.to_text
             Error.throw (Illegal_Argument.Error msg)
         False ->
-            num_input_rows = input_storage_0.size
+            num_input_rows = input_storage_0.getSize
             output_storage_builder = builder num_input_rows
             ok = 0.up_to num_input_rows . each_propagate i->
                 input_value_0 = input_storage_0.getBoxed i

distribution/lib/Standard/Table/0.0.0-dev/src/Internal/Fan_Out.enso

@@ -140,7 +140,7 @@ fan_out_to_rows_and_columns table input_column_id function column_names at_least
 fan_out_to_rows_and_columns_fixed : Any -> (Any -> Vector (Vector Any)) -> Boolean -> Vector Text -> (Integer -> Any) -> Problem_Builder -> Vector
 fan_out_to_rows_and_columns_fixed input_storage function at_least_one_row:Boolean column_names:Vector column_builder problem_builder =
     num_output_columns = column_names.length
-    num_input_rows = input_storage.size
+    num_input_rows = input_storage.getSize
 
     # Accumulates the outputs of the function.
     output_column_builders = Vector.new num_output_columns _-> column_builder num_input_rows
@@ -176,7 +176,7 @@ fan_out_to_rows_and_columns_dynamic input_storage function at_least_one_row colu
     output_column_builders = Builder.new
 
     # Guess that most of the time, we'll get at least one value for each input.
-    num_input_rows = input_storage.size
+    num_input_rows = input_storage.getSize
 
     # Column Builder add function
     add_column n current_length =

distribution/lib/Standard/Table/0.0.0-dev/src/Internal/Java_Exports.enso

@@ -38,7 +38,7 @@ make_long_builder initial_size bits java_problem_aggregator=(Missing_Argument.en
 make_string_builder : Integer -> Value_Type -> Builder
 make_string_builder initial_size value_type=Value_Type.Char =
     storage_type = Storage.from_value_type_strict value_type
-    Builder.getForType storage_type initial_size Nothing
+    Builder.getForText initial_size storage_type
 
 ## PRIVATE
 make_inferred_builder : Integer -> ProblemAggregator -> Builder

std-bits/google-api/src/main/java/org/enso/google/GoogleAnalyticsReader.java

@@ -277,7 +277,7 @@ public static Table runReport(
 
       var builders = new Builder[dimensions.size() + metrics.size()];
       for (int i = 0; i < dimensions.size() + metrics.size(); i++) {
-        builders[i] = Builder.getForType(TextType.VARIABLE_LENGTH, rowCount, null);
+        builders[i] = Builder.getForText(rowCount, TextType.VARIABLE_LENGTH);
       }
 
       // Load the data

std-bits/table/src/main/java/org/enso/table/aggregations/Sum.java

@@ -33,8 +33,7 @@ public Sum(String name, Column column) {
   public Builder makeBuilder(int size, ProblemAggregator problemAggregator) {
     return switch (inputType) {
       case IntegerType integerType -> new InferredIntegerBuilder(size, problemAggregator);
-      case BigIntegerType bigIntegerType -> Builder.getForType(
-          bigIntegerType, size, problemAggregator);
+      case BigIntegerType bigIntegerType -> Builder.getForBigInteger(size, problemAggregator);
       case FloatType floatType -> Builder.getForDouble(floatType, size, problemAggregator);
       default -> throw new IllegalStateException(
           "Unexpected input type for Sum aggregate: " + inputType);

std-bits/table/src/main/java/org/enso/table/data/column/builder/BigIntegerBuilder.java

@@ -45,7 +45,7 @@ public Builder retypeTo(StorageType type) {
         return res;
       }
       case BigDecimalType _ -> {
-        var res = Builder.getForType(type, data.length, problemAggregator);
+        var res = Builder.getForBigDecimal(data.length);
         for (int i = 0; i < currentSize; i++) {
           if (data[i] == null) {
             res.appendNulls(1);

std-bits/table/src/main/java/org/enso/table/data/column/builder/InferredBuilder.java

@@ -98,23 +98,23 @@ private void initBuilderFor(Object o) {
     } else if (NumericConverter.isFloatLike(o)) {
       newBuilder = new InferredDoubleBuilder(initialCapacity, problemAggregator);
     } else if (o instanceof String) {
-      newBuilder = Builder.getForType(TextType.VARIABLE_LENGTH, initialCapacity, problemAggregator);
+      newBuilder = Builder.getForText(initialCapacity, TextType.VARIABLE_LENGTH);
     } else if (o instanceof BigInteger) {
-      newBuilder = Builder.getForType(BigIntegerType.INSTANCE, initialCapacity, problemAggregator);
+      newBuilder = Builder.getForBigInteger(initialCapacity, problemAggregator);
     } else if (o instanceof BigDecimal) {
-      newBuilder = Builder.getForType(BigDecimalType.INSTANCE, initialCapacity, problemAggregator);
+      newBuilder = Builder.getForBigDecimal(initialCapacity);
     } else if (o instanceof LocalDate) {
       newBuilder =
           allowDateToDateTimeConversion
               ? new DateBuilder(initialCapacity, true)
-              : Builder.getForType(DateType.INSTANCE, initialCapacity, problemAggregator);
+              : Builder.getForDate(initialCapacity);
     } else if (o instanceof ZonedDateTime) {
       newBuilder =
           allowDateToDateTimeConversion
               ? new DateTimeBuilder(initialCapacity, true)
-              : Builder.getForType(DateTimeType.INSTANCE, initialCapacity, problemAggregator);
+              : Builder.getForDateTime(initialCapacity);
     } else if (o instanceof LocalTime) {
-      newBuilder = Builder.getForType(TimeOfDayType.INSTANCE, initialCapacity, problemAggregator);
+      newBuilder = Builder.getForTime(initialCapacity);
     } else {
       newBuilder = Builder.getForType(AnyObjectType.INSTANCE, initialCapacity, problemAggregator);
     }

std-bits/table/src/main/java/org/enso/table/data/column/builder/InferredDoubleBuilder.java

@@ -145,7 +145,7 @@ public boolean canRetypeTo(StorageType type) {
   @Override
   public Builder retypeTo(StorageType type) {
     if (type instanceof BigDecimalType) {
-      Builder res = Builder.getForType(BigDecimalType.INSTANCE, data.length, null);
+      Builder res = Builder.getForBigDecimal(data.length);
       for (int i = 0; i < currentSize; i++) {
         if (isNothing.get(i)) {
           res.appendNulls(1);

std-bits/table/src/main/java/org/enso/table/data/column/operation/map/numeric/arithmetic/NumericBinaryOpImplementation.java

@@ -20,6 +20,7 @@
 import org.enso.table.data.column.storage.type.FloatType;
 import org.enso.table.data.column.storage.type.IntegerType;
 import org.enso.table.error.UnexpectedTypeException;
+import org.enso.table.problems.BlackholeProblemAggregator;
 import org.graalvm.polyglot.Context;
 
 /** An operation expecting a numeric argument and returning a numeric column. */
@@ -276,7 +277,7 @@ protected Storage<BigInteger> runBigIntegerZip(
     Context context = Context.getCurrent();
     int n = a.size();
     int m = Math.min(a.size(), b.size());
-    var builder = Builder.getForBigInteger(n, null);
+    var builder = Builder.getForBigInteger(n, BlackholeProblemAggregator.INSTANCE);
     for (int i = 0; i < m; i++) {
       BigInteger x = a.getItem(i);
       BigInteger y = b.getItem(i);
@@ -297,7 +298,7 @@ protected Storage<BigInteger> runBigIntegerMap(
       BigIntegerArrayAdapter a, BigInteger b, MapOperationProblemAggregator problemAggregator) {
     Context context = Context.getCurrent();
     int n = a.size();
-    var builder = Builder.getForBigInteger(n, null);
+    var builder = Builder.getForBigInteger(n, BlackholeProblemAggregator.INSTANCE);
     for (int i = 0; i < n; i++) {
       BigInteger x = a.getItem(i);
       if (x == null || b == null) {

std-bits/table/src/main/java/org/enso/table/data/column/operation/map/numeric/helpers/BigIntegerArrayAdapter.java

@@ -6,6 +6,7 @@
 import org.enso.table.data.column.storage.Storage;
 import org.enso.table.data.column.storage.numeric.AbstractLongStorage;
 import org.enso.table.data.column.storage.numeric.BigIntegerStorage;
+import org.enso.table.problems.BlackholeProblemAggregator;
 
 public interface BigIntegerArrayAdapter {
   BigInteger getItem(int i);
@@ -14,7 +15,7 @@ public interface BigIntegerArrayAdapter {
 
   default Storage<BigInteger> intoStorage() {
     int n = size();
-    var builder = Builder.getForBigInteger(n, null);
+    var builder = Builder.getForBigInteger(n, BlackholeProblemAggregator.INSTANCE);
     for (int i = 0; i < n; i++) {
       builder.append(getItem(i));
     }

std-bits/table/src/main/java/org/enso/table/data/column/operation/map/numeric/helpers/DoubleArrayAdapter.java

@@ -9,6 +9,7 @@
 import org.enso.table.data.column.storage.numeric.BigIntegerStorage;
 import org.enso.table.data.column.storage.numeric.DoubleStorage;
 import org.enso.table.data.column.storage.type.FloatType;
+import org.enso.table.problems.BlackholeProblemAggregator;
 
 public interface DoubleArrayAdapter {
   double getItemAsDouble(int i);
@@ -19,7 +20,7 @@ public interface DoubleArrayAdapter {
 
   default Storage<Double> intoStorage() {
     int n = size();
-    var builder = Builder.getForDouble(FloatType.FLOAT_64, n, null);
+    var builder = Builder.getForDouble(FloatType.FLOAT_64, n, BlackholeProblemAggregator.INSTANCE);
     for (int i = 0; i < n; i++) {
       if (isNothing(i)) {
         builder.appendNulls(1);

std-bits/table/src/main/java/org/enso/table/data/column/operation/map/text/CoalescingStringStringOp.java

@@ -15,7 +15,7 @@ public CoalescingStringStringOp(String name) {
   }
 
   @Override
-  public Storage<?> runBinaryMap(
+  public Storage<String> runBinaryMap(
       SpecializedStorage<String> storage,
       Object arg,
       MapOperationProblemAggregator problemAggregator) {
@@ -45,7 +45,7 @@ public Storage<?> runBinaryMap(
   }
 
   @Override
-  public Storage<?> runZip(
+  public Storage<String> runZip(
       SpecializedStorage<String> storage,
       Storage<?> arg,
       MapOperationProblemAggregator problemAggregator) {

std-bits/table/src/main/java/org/enso/table/data/column/operation/unary/DateTruncateOperation.java

@@ -6,7 +6,6 @@
 import org.enso.table.data.column.operation.map.MapOperationProblemAggregator;
 import org.enso.table.data.column.storage.ColumnStorage;
 import org.enso.table.data.column.storage.type.DateTimeType;
-import org.enso.table.data.column.storage.type.DateType;
 
 public class DateTruncateOperation extends AbstractUnaryOperation {
   public static String TRUNCATE = "truncate";
@@ -24,7 +23,7 @@ public boolean canApply(ColumnStorage<?> storage) {
   @Override
   protected Builder createBuilder(
       ColumnStorage<?> storage, MapOperationProblemAggregator problemAggregator) {
-    return Builder.getForType(DateType.INSTANCE, storage.getSize(), problemAggregator);
+    return Builder.getForDate(storage.getSize());
   }
 
   @Override