Handled surface api comments of removing Generic access as Objects

docs/design/services/dynamodb/high-level-library/DocumentAPI.md

@@ -44,7 +44,7 @@ providers.
 
 // New API in TableSchema to create a DocumentTableSchema 
 DocumentTableSchema documentTableSchema =
-    TableSchema.fromDocumentSchemaBuilder()
+    TableSchema.documentSchemaBuilder()
                .addIndexPartitionKey(primaryIndexName(), "sample_hash_name", AttributeValueType.S)
                .addIndexSortKey("gsi_index", "sample_sort_name", AttributeValueType.N)
                .addAttributeConverterProviders(cutomAttributeConverters)
@@ -78,7 +78,7 @@ EnhancedDocument documentTableItem = documentTable.getItem(
 Number sampleSortvalue = documentTableItem.get("sample_sort_name", EnhancedType.of(Number.class));
 
 // Accessing an attribute from document using specific getters.
-sampleSortvalue = documentTableItem.getSdkNumber("sample_sort_name"); 
+sampleSortvalue = documentTableItem.getNumber("sample_sort_name"); 
 
 // Accessing an attribute of custom class using custom converters.
 CustomClass customClass = documentTableItem.get("custom_nested_map", new CustomAttributeConverter()));

services-custom/dynamodb-enhanced/src/main/java/software/amazon/awssdk/enhanced/dynamodb/DefaultAttributeConverterProvider.java

@@ -61,6 +61,7 @@
 import software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute.OptionalLongAttributeConverter;
 import software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute.PeriodAttributeConverter;
 import software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute.SdkBytesAttributeConverter;
+import software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute.SdkNumberAttributeConverter;
 import software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute.SetAttributeConverter;
 import software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute.ShortAttributeConverter;
 import software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute.StringAttributeConverter;
@@ -247,7 +248,8 @@ private static Builder getDefaultBuilder() {
                                                 .addConverter(UuidAttributeConverter.create())
                                                 .addConverter(ZonedDateTimeAsStringAttributeConverter.create())
                                                 .addConverter(ZoneIdAttributeConverter.create())
-                                                .addConverter(ZoneOffsetAttributeConverter.create());
+                                                .addConverter(ZoneOffsetAttributeConverter.create())
+                                                .addConverter(SdkNumberAttributeConverter.create());
     }
 
     /**

services-custom/dynamodb-enhanced/src/main/java/software/amazon/awssdk/enhanced/dynamodb/TableSchema.java

@@ -20,7 +20,9 @@
 import java.util.Map;
 import software.amazon.awssdk.annotations.SdkPublicApi;
 import software.amazon.awssdk.annotations.ThreadSafe;
+import software.amazon.awssdk.enhanced.dynamodb.document.EnhancedDocument;
 import software.amazon.awssdk.enhanced.dynamodb.mapper.BeanTableSchema;
+import software.amazon.awssdk.enhanced.dynamodb.mapper.DocumentTableSchema;
 import software.amazon.awssdk.enhanced.dynamodb.mapper.ImmutableTableSchema;
 import software.amazon.awssdk.enhanced.dynamodb.mapper.StaticImmutableTableSchema;
 import software.amazon.awssdk.enhanced.dynamodb.mapper.StaticTableSchema;
@@ -84,6 +86,16 @@ static <T> BeanTableSchema<T> fromBean(Class<T> beanClass) {
         return BeanTableSchema.create(beanClass);
     }
 
+    /**
+     * Provides interfaces to interact with DynamoDB tables as {@link EnhancedDocument} where the complete Schema of the table is
+     * not required.
+     *
+     * @return A {@link DocumentTableSchema.Builder} for instantiating DocumentTableSchema.
+     */
+    static DocumentTableSchema.Builder documentSchemaBuilder() {
+        return DocumentTableSchema.builder();
+    }
+
     /**
      * Scans an immutable class that has been annotated with DynamoDb immutable annotations and then returns a
      * {@link ImmutableTableSchema} implementation of this interface that can map records to and from items of that

services-custom/dynamodb-enhanced/src/main/java/software/amazon/awssdk/enhanced/dynamodb/internal/converter/attribute/JsonItemAttributeConverter.java

@@ -73,6 +73,9 @@ public AttributeValue transformFrom(JsonNode input) {
 
     @Override
     public JsonNode transformTo(AttributeValue input) {
+        if (AttributeValue.fromNul(true).equals(input)) {
+            return NullJsonNode.instance();
+        }
         return EnhancedAttributeValue.fromAttributeValue(input).convert(VISITOR);
     }
 

services-custom/dynamodb-enhanced/src/main/java/software/amazon/awssdk/enhanced/dynamodb/internal/converter/attribute/JsonNodeToAttributeValueMapConverter.java

@@ -38,7 +38,7 @@ public static JsonNodeToAttributeValueMapConverter instance() {
 
     @Override
     public AttributeValue visitNull() {
-        return AttributeValue.builder().build();
+        return AttributeValue.fromNul(true);
     }
 
     @Override
@@ -70,7 +70,8 @@ public AttributeValue visitObject(Map<String, JsonNode> object) {
                                                 .collect(Collectors.toMap(
                                                     entry -> entry.getKey(),
                                                     entry -> entry.getValue().visit(this),
-                                                    (left, right) -> left, LinkedHashMap::new))).build();
+                                                    (left, right) -> left, LinkedHashMap::new)))
+                             .build();
     }
 
     @Override

services-custom/dynamodb-enhanced/src/main/java/software/amazon/awssdk/enhanced/dynamodb/internal/converter/attribute/SdkNumberAttributeConverter.java

@@ -0,0 +1,93 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ *  http://aws.amazon.com/apache2.0
+ *
+ * or in the "license" file accompanying this file. This file is distributed
+ * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied. See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+package software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute;
+
+import software.amazon.awssdk.annotations.Immutable;
+import software.amazon.awssdk.annotations.SdkInternalApi;
+import software.amazon.awssdk.annotations.ThreadSafe;
+import software.amazon.awssdk.core.SdkNumber;
+import software.amazon.awssdk.enhanced.dynamodb.AttributeConverter;
+import software.amazon.awssdk.enhanced.dynamodb.AttributeValueType;
+import software.amazon.awssdk.enhanced.dynamodb.EnhancedType;
+import software.amazon.awssdk.enhanced.dynamodb.internal.converter.TypeConvertingVisitor;
+import software.amazon.awssdk.enhanced.dynamodb.internal.converter.string.SdkNumberStringConverter;
+import software.amazon.awssdk.services.dynamodb.model.AttributeValue;
+
+/**
+ * A converter between {@link SdkNumber} and {@link AttributeValue}.
+ *
+ * <p>
+ * This stores values in DynamoDB as a number.
+ *
+ * <p>
+ * This supports reading the full range of integers supported by DynamoDB. For smaller numbers, consider using
+ * {@link ShortAttributeConverter}, {@link IntegerAttributeConverter} or {@link LongAttributeConverter}.
+ *
+ * This can be created via {@link #create()}.
+ */
+@SdkInternalApi
+@ThreadSafe
+@Immutable
+public final class SdkNumberAttributeConverter implements AttributeConverter<SdkNumber> {
+    private static final Visitor VISITOR = new Visitor();
+    private static final SdkNumberStringConverter STRING_CONVERTER = SdkNumberStringConverter.create();
+
+    private SdkNumberAttributeConverter() {
+    }
+
+    public static SdkNumberAttributeConverter create() {
+        return new SdkNumberAttributeConverter();
+    }
+
+    @Override
+    public EnhancedType<SdkNumber> type() {
+        return EnhancedType.of(SdkNumber.class);
+    }
+
+    @Override
+    public AttributeValueType attributeValueType() {
+        return AttributeValueType.N;
+    }
+
+    @Override
+    public AttributeValue transformFrom(SdkNumber input) {
+        return AttributeValue.builder().n(STRING_CONVERTER.toString(input)).build();
+    }
+
+    @Override
+    public SdkNumber transformTo(AttributeValue input) {
+        if (input.n() != null) {
+            return EnhancedAttributeValue.fromNumber(input.n()).convert(VISITOR);
+        }
+        return EnhancedAttributeValue.fromAttributeValue(input).convert(VISITOR);
+    }
+
+    private static final class Visitor extends TypeConvertingVisitor<SdkNumber> {
+        private Visitor() {
+            super(SdkNumber.class, SdkNumberAttributeConverter.class);
+        }
+
+        @Override
+        public SdkNumber convertString(String value) {
+            return STRING_CONVERTER.fromString(value);
+        }
+
+        @Override
+        public SdkNumber convertNumber(String value) {
+            return STRING_CONVERTER.fromString(value);
+        }
+    }
+}

services-custom/dynamodb-enhanced/src/main/java/software/amazon/awssdk/enhanced/dynamodb/internal/converter/string/SdkNumberStringConverter.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ *  http://aws.amazon.com/apache2.0
+ *
+ * or in the "license" file accompanying this file. This file is distributed
+ * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied. See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+package software.amazon.awssdk.enhanced.dynamodb.internal.converter.string;
+
+import software.amazon.awssdk.annotations.Immutable;
+import software.amazon.awssdk.annotations.SdkInternalApi;
+import software.amazon.awssdk.annotations.ThreadSafe;
+import software.amazon.awssdk.core.SdkNumber;
+import software.amazon.awssdk.enhanced.dynamodb.EnhancedType;
+import software.amazon.awssdk.enhanced.dynamodb.internal.converter.StringConverter;
+
+/**
+ * A converter between {@link SdkNumber} and {@link String}.
+ *
+ * <p>
+ * This converts values using {@link SdkNumber#toString()} and {@link SdkNumber#fromString(String)}}.
+ */
+@SdkInternalApi
+@ThreadSafe
+@Immutable
+public class SdkNumberStringConverter implements StringConverter<SdkNumber> {
+    private SdkNumberStringConverter() {
+    }
+
+    public static SdkNumberStringConverter create() {
+        return new SdkNumberStringConverter();
+    }
+
+    @Override
+    public EnhancedType<SdkNumber> type() {
+        return EnhancedType.of(SdkNumber.class);
+    }
+
+    @Override
+    public SdkNumber fromString(String string) {
+        return SdkNumber.fromString(string);
+    }
+}