com.amazonaws.services.dynamodbv2.document.internal.ItemValueConformer Maven / Gradle / Ivy
/*
* Copyright 2014-2021 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 com.amazonaws.services.dynamodbv2.document.internal;
import static com.amazonaws.util.BinaryUtils.copyBytesFrom;
import java.math.BigDecimal;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* Used to standardize a given Item
's value into a standard
* internal representation (for purposes such as equality comparison.)
*/
public class ItemValueConformer extends ValueTransformer {
/**
* This method is assumed to be called for the purpose of a setter method
* invocation, but NOT a getter method invocation.
*/
@Override public Object transform(Object value) {
if (value == null) {
return value;
} else if (value instanceof Boolean) {
return value;
} else if (value instanceof String) {
return value;
} else if (value instanceof Number) {
return InternalUtils.toBigDecimal((Number)value);
} else if (value instanceof byte[]) {
return value;
} else if (value instanceof ByteBuffer) {
return copyBytesFrom((ByteBuffer)value);
} else if (value instanceof Set) {
@SuppressWarnings("unchecked")
Set