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Is there some relatively easy way to create paging table/container that loads new page from the database when user scrolls table scrollbar to the bottom? New rows are added to the table after the "old" ones (so that user can easily scroll back). For example Spotify uses this kind of paging mechanism.
That is pretty much the standard behaviour of a Table whenever a lazy loading container is used. The Vaadin-provided JPAContainer, or the LazyQueryContainer, or HBNContainer would all behave as you appear to request.