Inquire about the retrieval of the firebase DB works
Let's imagine "posts" contains 5000 posts inside it. When I retrieve data from my Database on Firebase on RecyclerView with the condition orderByChild, has all the data (the 5000 posts) been called or just a fraction (like 15 posts)? For instance, when I scroll down does it call another 15 posts?
firebase firebase-realtime-database android-recyclerview
edited Nov 17 '18 at 15:16
Frank van Puffelen
233k29380407
asked Nov 17 '18 at 5:04
EgMEgM
1
add a comment |
Let's imagine "posts" contains 5000 posts inside it. When I retrieve data from my Database on Firebase on RecyclerView with the condition orderByChild, has all the data (the 5000 posts) been called or just a fraction (like 15 posts)? For instance, when I scroll down does it call another 15 posts?
firebase firebase-realtime-database android-recyclerview
edited Nov 17 '18 at 15:16
Frank van Puffelen
233k29380407
asked Nov 17 '18 at 5:04
EgMEgM
1
add a comment |
Let's imagine "posts" contains 5000 posts inside it. When I retrieve data from my Database on Firebase on RecyclerView with the condition orderByChild, has all the data (the 5000 posts) been called or just a fraction (like 15 posts)? For instance, when I scroll down does it call another 15 posts?
firebase firebase-realtime-database android-recyclerview
edited Nov 17 '18 at 15:16
Frank van Puffelen
233k29380407
asked Nov 17 '18 at 5:04
EgMEgM
1
Let's imagine "posts" contains 5000 posts inside it. When I retrieve data from my Database on Firebase on RecyclerView with the condition orderByChild, has all the data (the 5000 posts) been called or just a fraction (like 15 posts)? For instance, when I scroll down does it call another 15 posts?
firebase firebase-realtime-database android-recyclerview
firebase firebase-realtime-database android-recyclerview
edited Nov 17 '18 at 15:16
Frank van Puffelen
233k29380407
asked Nov 17 '18 at 5:04
EgMEgM
1
edited Nov 17 '18 at 15:16
Frank van Puffelen
233k29380407
asked Nov 17 '18 at 5:04
EgMEgM
1
edited Nov 17 '18 at 15:16
Frank van Puffelen
233k29380407
edited Nov 17 '18 at 15:16
Frank van Puffelen
233k29380407
edited Nov 17 '18 at 15:16
Frank van Puffelen
233k29380407
233k29380407
asked Nov 17 '18 at 5:04
EgMEgM
1
asked Nov 17 '18 at 5:04
EgMEgM
1
asked Nov 17 '18 at 5:04
EgMEgM
1
1
add a comment |
add a comment |
1 Answer
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If you add a listener for 5000 items, and the database contains at least 5000 items, then your listener callback will be invoked with a snapshot of those 5000 items.
If you want to load a subset of the items to implement pagination in your UI, you will have to implement this yourself. I highly recommend doing a few searches for previous questions (and other material) on Firebase pagination in that case.
answered Nov 17 '18 at 15:16
Frank van PuffelenFrank van Puffelen
233k29380407
add a comment |
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If you add a listener for 5000 items, and the database contains at least 5000 items, then your listener callback will be invoked with a snapshot of those 5000 items.
If you want to load a subset of the items to implement pagination in your UI, you will have to implement this yourself. I highly recommend doing a few searches for previous questions (and other material) on Firebase pagination in that case.
answered Nov 17 '18 at 15:16
Frank van PuffelenFrank van Puffelen
233k29380407
add a comment |
If you add a listener for 5000 items, and the database contains at least 5000 items, then your listener callback will be invoked with a snapshot of those 5000 items.
If you want to load a subset of the items to implement pagination in your UI, you will have to implement this yourself. I highly recommend doing a few searches for previous questions (and other material) on Firebase pagination in that case.
answered Nov 17 '18 at 15:16
Frank van PuffelenFrank van Puffelen
233k29380407
add a comment |
If you add a listener for 5000 items, and the database contains at least 5000 items, then your listener callback will be invoked with a snapshot of those 5000 items.
If you want to load a subset of the items to implement pagination in your UI, you will have to implement this yourself. I highly recommend doing a few searches for previous questions (and other material) on Firebase pagination in that case.
answered Nov 17 '18 at 15:16
Frank van PuffelenFrank van Puffelen
233k29380407
If you add a listener for 5000 items, and the database contains at least 5000 items, then your listener callback will be invoked with a snapshot of those 5000 items.
If you want to load a subset of the items to implement pagination in your UI, you will have to implement this yourself. I highly recommend doing a few searches for previous questions (and other material) on Firebase pagination in that case.
answered Nov 17 '18 at 15:16
Frank van PuffelenFrank van Puffelen
233k29380407
answered Nov 17 '18 at 15:16
Frank van PuffelenFrank van Puffelen
233k29380407
answered Nov 17 '18 at 15:16
Frank van PuffelenFrank van Puffelen
233k29380407
answered Nov 17 '18 at 15:16
Frank van PuffelenFrank van Puffelen
233k29380407
233k29380407
add a comment |
add a comment |
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