FeedTableModule.java

@Module
public class FeedTableModule {
    @Provides
    @Singleton
    @Named(value=TableConstants.FEED_TABLE_NAME)
    Table feedTable(final DynamoDB dynamoDB) {
        return dynamoDB.getTable(TableConstants.FEED_TABLE_NAME);
    }

    @Provides
    @Singleton
    @Named(value=TableConstants.FEED_USERID_CREATED_AT_INDEX)
    Index feedSortedIndex(final @Named(value=TableConstants.FEED_TABLE_NAME) Table feedTable) {
        return feedTable.getIndex(TableConstants.FEED_USERID_CREATED_AT_INDEX);
    }

    @Provides
    @Singleton
    @Named(value=QueryConstants.FEED_SORTED_QUERY)
    QuerySpec feedSortedQuery() {
        return new QuerySpec()
            .withKeyConditionExpression("#U = :userId")
            .withNameMap(new NameMap()
                    .with("#U", TableConstants.FEED_USERID_COLUMN))
            .withScanIndexForward(false);
    }
}