software.amazon.awssdk.enhanced.dynamodb.internal

Class EnhancedClientUtils

java.lang.Object

software.amazon.awssdk.enhanced.dynamodb.internal.EnhancedClientUtils

public final class EnhancedClientUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static String	cleanAttributeName(String key) There is a divergence in what constitutes an acceptable attribute name versus a token used in expression names or values.
static <T> Key	createKeyFromItem(T item, TableSchema<T> tableSchema, String indexName)
static <T> List<T>	getItemsFromSupplier(List<Supplier<T>> itemSupplierList)
static <ResponseT,ItemT> Page<ItemT>	readAndTransformPaginatedItems(ResponseT response, TableSchema<ItemT> tableSchema, OperationContext operationContext, DynamoDbEnhancedClientExtension dynamoDbEnhancedClientExtension, Function<ResponseT,List<Map<String,AttributeValue>>> getItems, Function<ResponseT,Map<String,AttributeValue>> getLastEvaluatedKey)
static <T> T	readAndTransformSingleItem(Map<String,AttributeValue> itemMap, TableSchema<T> tableSchema, OperationContext operationContext, DynamoDbEnhancedClientExtension dynamoDbEnhancedClientExtension)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

cleanAttributeName

public static String cleanAttributeName(String key)

There is a divergence in what constitutes an acceptable attribute name versus a token used in expression names or values. Since the mapper translates one to the other, it is necessary to scrub out all these 'illegal' characters before adding them to expression values or expression names.

Parameters:

key - A key that may contain non alpha-numeric characters acceptable to a DynamoDb attribute name.

Returns:

A key that has all these characters scrubbed and overwritten with an underscore.

readAndTransformSingleItem

public static <T> T readAndTransformSingleItem(Map<String,AttributeValue> itemMap,
                                               TableSchema<T> tableSchema,
                                               OperationContext operationContext,
                                               DynamoDbEnhancedClientExtension dynamoDbEnhancedClientExtension)

readAndTransformPaginatedItems

public static <ResponseT,ItemT> Page<ItemT> readAndTransformPaginatedItems(ResponseT response,
                                                                           TableSchema<ItemT> tableSchema,
                                                                           OperationContext operationContext,
                                                                           DynamoDbEnhancedClientExtension dynamoDbEnhancedClientExtension,
                                                                           Function<ResponseT,List<Map<String,AttributeValue>>> getItems,
                                                                           Function<ResponseT,Map<String,AttributeValue>> getLastEvaluatedKey)

createKeyFromItem

public static <T> Key createKeyFromItem(T item,
                                        TableSchema<T> tableSchema,
                                        String indexName)

getItemsFromSupplier

public static <T> List<T> getItemsFromSupplier(List<Supplier<T>> itemSupplierList)