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Merge pull request #1313 from asifebrahim/temp

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Add Nullable annotations in ListExtractor
This commit is contained in:
Tobi
2025-07-07 11:56:00 -07:00
committed by GitHub
parent 8b9ccec936 cbbc6d2504
commit 48d78205be
1 changed files with 16 additions and 5 deletions
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21
extractor/src/main/java/org/schabi/newpipe/extractor/ListExtractor.java
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@@ -8,7 +8,7 @@ import java.util.Collections;
import java.util.List;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
/**
* Base class to extractors that have a list (e.g. playlists, users).
@@ -20,11 +20,13 @@ public abstract class ListExtractor<R extends InfoItem> extends Extractor {
* a list has an unknown number of items.
*/
public static final long ITEM_COUNT_UNKNOWN = -1;
/**
* Constant that should be returned whenever a list has an
* infinite number of items. For example a YouTube mix.
*/
public static final long ITEM_COUNT_INFINITE = -2;
/**
* Constant that should be returned whenever a list
* has an unknown number of items bigger than 100.
@@ -69,8 +71,11 @@ public abstract class ListExtractor<R extends InfoItem> extends Extractor {
* @param <T> the info item type that this page is supposed to store and provide
*/
public static class InfoItemsPage<T extends InfoItem> {
private static final InfoItemsPage<InfoItem> EMPTY =
new InfoItemsPage<>(Collections.emptyList(), null, Collections.emptyList());
private static final InfoItemsPage<InfoItem> EMPTY = new InfoItemsPage<>(
Collections.emptyList(),
null,
Collections.emptyList()
);
/**
* A convenient method that returns a representation of an empty page.
@@ -94,6 +99,7 @@ public abstract class ListExtractor<R extends InfoItem> extends Extractor {
* @see ListExtractor#getPage(Page)
* @see Page
*/
@Nullable
private final Page nextPage;
/**
@@ -101,12 +107,13 @@ public abstract class ListExtractor<R extends InfoItem> extends Extractor {
*/
private final List<Throwable> errors;
public InfoItemsPage(final InfoItemsCollector<T, ?> collector, final Page nextPage) {
public InfoItemsPage(final InfoItemsCollector<T, ?> collector,
@Nullable final Page nextPage) {
this(collector.getItems(), nextPage, collector.getErrors());
}
public InfoItemsPage(final List<T> itemsList,
final Page nextPage,
@Nullable final Page nextPage,
final List<Throwable> errors) {
this.itemsList = itemsList;
this.nextPage = nextPage;
@@ -121,6 +128,10 @@ public abstract class ListExtractor<R extends InfoItem> extends Extractor {
return itemsList;
}
/**
* @return the next page if available, or null otherwise
*/
@Nullable
public Page getNextPage() {
return nextPage;
}