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  * Copyright 2011-2015 Amazon Technologies, Inc.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
 * 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.
Implementation of the List interface that represents the results from a scan in AWS DynamoDB. Paginated results are loaded on demand when the user executes an operation that requires them. Some operations, such as size(), must fetch the entire list, but results are lazily fetched page by page when possible.

This is an unmodifiable list, so callers should not invoke any operations that modify this list, otherwise they will throw an UnsupportedOperationException.

<T> The type of objects held in this list.
See also:
public class PaginatedScanList<T> extends PaginatedList<T> {

The current scan request
    private final ScanRequest scanRequest;
    private final DynamoDBMapperConfig config;

The current results for the last executed scan operation
    private ScanResult scanResult;
    public PaginatedScanList(
            DynamoDBMapper mapper,
            Class<T> clazz,
            AmazonDynamoDB dynamo,
            ScanRequest scanRequest,
            ScanResult scanResult,
            PaginationLoadingStrategy paginationLoadingStrategy,
            DynamoDBMapperConfig config
    ) {
        this. = scanRequest;
        this. = scanResult;
        this. = config;
        // If the results should be eagerly loaded at once
        if (paginationLoadingStrategy == .) {
    protected boolean atEndOfResults() {
        return .getLastEvaluatedKey() == null;
    protected synchronized List<T> fetchNextPage() {
         = .scan(DynamoDBMapper.applyUserAgent());
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