Add VBufferDataFrameCoumn to DataFrame (#6409)

* vbuffer file

* updates to vbuffer file

* vector

* edit to single list

* update to list

* fix tests

* cleanup PR

* fix all the tests

* change vbuffertest

* update string

* revert csproj string issue

* update string namespace

* update summary tag

Author: Becca McHenry

src/Microsoft.Data.Analysis/IDataView.Extension.cs

@@ -116,6 +116,10 @@ public static DataFrame ToDataFrame(this IDataView dataView, long maxRows, param
                 {
                     dataFrameColumns.Add(new StringDataFrameColumn(dataViewColumn.Name));
                 }
+                else if (type is VectorDataViewType vectorType)
+                {
+                    dataFrameColumns.Add(GetVectorDataFrame(vectorType, dataViewColumn.Name));
+                }
                 else
                 {
                     throw new NotSupportedException(String.Format(Microsoft.Data.Strings.NotSupportedColumnType, type.RawType.Name));
@@ -143,6 +147,66 @@ public static DataFrame ToDataFrame(this IDataView dataView, long maxRows, param
 
             return new DataFrame(dataFrameColumns);
         }
+
+        private static DataFrameColumn GetVectorDataFrame(VectorDataViewType vectorType, string name)
+        {
+            var itemType = vectorType.ItemType;
+
+            if (itemType.RawType == typeof(bool))
+            {
+                return new VBufferDataFrameColumn<bool>(name);
+            }
+            else if (itemType.RawType == typeof(byte))
+            {
+                return new VBufferDataFrameColumn<byte>(name);
+            }
+            else if (itemType.RawType == typeof(double))
+            {
+                return new VBufferDataFrameColumn<double>(name);
+            }
+            else if (itemType.RawType == typeof(float))
+            {
+                return new VBufferDataFrameColumn<Single>(name);
+            }
+            else if (itemType.RawType == typeof(int))
+            {
+                return new VBufferDataFrameColumn<Int32>(name);
+            }
+            else if (itemType.RawType == typeof(long))
+            {
+                return new VBufferDataFrameColumn<Int64>(name);
+            }
+            else if (itemType.RawType == typeof(sbyte))
+            {
+                return new VBufferDataFrameColumn<sbyte>(name);
+            }
+            else if (itemType.RawType == typeof(short))
+            {
+                return new VBufferDataFrameColumn<short>(name);
+            }
+            else if (itemType.RawType == typeof(uint))
+            {
+                return new VBufferDataFrameColumn<uint>(name);
+            }
+            else if (itemType.RawType == typeof(ulong))
+            {
+                return new VBufferDataFrameColumn<ulong>(name);
+            }
+            else if (itemType.RawType == typeof(ushort))
+            {
+                return new VBufferDataFrameColumn<ushort>(name);
+            }
+            else if (itemType.RawType == typeof(char))
+            {
+                return new VBufferDataFrameColumn<char>(name);
+            }
+            else if (itemType.RawType == typeof(decimal))
+            {
+                return new VBufferDataFrameColumn<decimal>(name);
+            }
+
+            throw new NotSupportedException(String.Format(Microsoft.Data.Strings.VectorSubTypeNotSupported, itemType.ToString()));
+        }
     }
 
 }

src/Microsoft.Data.Analysis/Strings.Designer.cs

@@ -243,4 +243,8 @@
   <data name="StreamDoesntSupportReading" xml:space="preserve">
     <value>Stream doesn't support reading</value>
   </data>
+  <data name="VectorSubTypeNotSupported" xml:space="preserve">
+    <value>Specified vector subtype {0} is not supported.</value>
+    <comment>{0} vectory subtype</comment>
+  </data>
 </root>