public class AcceptOnceFileListFilter<F> extends AbstractFileListFilter<F>
FileListFilter
that passes files only one time. This can
conveniently be used to prevent duplication of files, as is done in
FileReadingMessageSource
.
This implementation is thread safe.
Constructor and Description |
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AcceptOnceFileListFilter()
Creates an AcceptOnceFileListFilter based on an unbounded queue.
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AcceptOnceFileListFilter(int maxCapacity)
Creates an AcceptOnceFileListFilter that is based on a bounded queue.
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Modifier and Type | Method and Description |
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boolean |
accept(F file)
Subclasses must implement this method.
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filterFiles
public AcceptOnceFileListFilter(int maxCapacity)
AbstractFileListFilter.filterFiles(Object[])
maxCapacity
- the maximum number of Files to maintain in the 'seen' queue.public AcceptOnceFileListFilter()
public boolean accept(F file)
AbstractFileListFilter
accept
in class AbstractFileListFilter<F>