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minor refactoring

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This commit is contained in:
Michael Spalti
2023-03-23 16:11:50 -07:00
parent 73a9fac5e9
commit 2b8c1ac604
1 changed files with 22 additions and 15 deletions
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37
dspace-server-webapp/src/main/java/org/dspace/app/rest/utils/Utils.java
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@@ -98,6 +98,7 @@ import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.hateoas.Link;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.core.parameters.P;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;
@@ -151,16 +152,10 @@ public class Utils {
public <T> Page<T> getPage(List<T> fullContents, @Nullable Pageable optionalPageable) {
Pageable pageable = getPageable(optionalPageable);
int total = fullContents.size();
List<T> pageContent = null;
if (pageable.getOffset() > total) {
throw new PaginationException(total);
} else {
if (pageable.getOffset() + pageable.getPageSize() > total) {
pageContent = fullContents.subList(Math.toIntExact(pageable.getOffset()), total);
} else {
pageContent = fullContents.subList(Math.toIntExact(pageable.getOffset()),
Math.toIntExact(pageable.getOffset()) + pageable.getPageSize());
}
List<T> pageContent = getListSlice(fullContents, pageable);
return new PageImpl<>(pageContent, pageable, total);
}
}
@@ -175,20 +170,32 @@ public class Utils {
public <T> List<T> getPageObjectList(List<T> fullList, @Nullable Pageable optionalPageable) {
Pageable pageable = getPageable(optionalPageable);
int total = fullList.size();
List<T> pageContent = null;
if (pageable.getOffset() > total) {
throw new PaginationException(total);
} else {
if (pageable.getOffset() + pageable.getPageSize() > total) {
pageContent = fullList.subList(Math.toIntExact(pageable.getOffset()), total);
} else {
pageContent = fullList.subList(Math.toIntExact(pageable.getOffset()),
Math.toIntExact(pageable.getOffset()) + pageable.getPageSize());
}
return pageContent;
return getListSlice(fullList, pageable);
}
}
/**
* Returns the list elements required for the page
* @param fullList the complete list of objects
* @param pageable
* @return list of page objects
* @param <T>
*/
private <T> List<T> getListSlice(List<T> fullList, Pageable pageable) {
int total = fullList.size();
List<T> pageContent = null;
if (pageable.getOffset() + pageable.getPageSize() > total) {
pageContent = fullList.subList(Math.toIntExact(pageable.getOffset()), total);
} else {
pageContent = fullList.subList(Math.toIntExact(pageable.getOffset()),
Math.toIntExact(pageable.getOffset()) + pageable.getPageSize());
}
return pageContent;
}
/**
* Convenience method to get a default pageable instance if needed.
*