[
https://issues.apache.org/jira/browse/LUCENE-8489?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Namgyu Kim updated LUCENE-8489:
-------------------------------
Description:
Currently, Reader based on BaseCompositeReader(MultiReader,
ParallelCompositeReader, DirectoryReader) does not support List type
constructor.
In fact, this does not make a big difference in performance, but users will
think positively if the API supports more variants.
I will add the following to support this.
1) MultiReader
{code:java}
public MultiReader(List<IndexReader> subReaders) throws IOException {
this(subReaders, true);
}
public MultiReader(List<IndexReader> subReaders, boolean closeSubReaders)
throws IOException {
this((IndexReader[]) subReaders.toArray(), closeSubReaders);
}
{code}
2) ParallelCompositeReader
{code:java}
public ParallelCompositeReader(List<CompositeReader> readers) throws
IOException {
this(true, readers);
}
public ParallelCompositeReader(boolean closeSubReaders, List<CompositeReader>
readers) throws IOException {
this(closeSubReaders, readers, readers);
}
public ParallelCompositeReader(boolean closeSubReaders, List<CompositeReader>
readers, List<CompositeReader> storedFieldReaders) throws IOException {
this(closeSubReaders, (CompositeReader[]) readers.toArray(),
(CompositeReader[]) storedFieldReaders.toArray());
}
{code}
3) DirectoryReader
{code:java}
protected DirectoryReader(Directory directory, List<LeafReader> segmentReaders)
throws IOException {
super(segmentReaders);
this.directory = directory;
}
{code}
4) BaseCompositeReader
{code:java}
@SuppressWarnings("unchecked")
protected BaseCompositeReader(List<R> subReaders) throws IOException {
this((R[]) subReaders.toArray());
}
{code}
5) Test
I plan to write a test case in "TestParallelCompositeReader".
After write the test case, I will upload the patch.
If you have any questions or requests, please left any comments :D
was:
Currently, Reader based on BaseCompositeReader(MultiReader,
ParallelCompositeReader, DirectoryReader) does not support List type
constructor.
In fact, this does not make a big difference in performance, but users will
think positively if the API supports more variants.
I will modify the following to support this.
1) MultiReader
{code:java}
public MultiReader(List<IndexReader> subReaders) throws IOException {
this(subReaders, true);
}
public MultiReader(List<IndexReader> subReaders, boolean closeSubReaders)
throws IOException {
this((IndexReader[]) subReaders.toArray(), closeSubReaders);
}
{code}
2) ParallelCompositeReader
{code:java}
public ParallelCompositeReader(List<CompositeReader> readers) throws
IOException {
this(true, readers);
}
public ParallelCompositeReader(boolean closeSubReaders, List<CompositeReader>
readers) throws IOException {
this(closeSubReaders, readers, readers);
}
public ParallelCompositeReader(boolean closeSubReaders, List<CompositeReader>
readers, List<CompositeReader> storedFieldReaders) throws IOException {
this(closeSubReaders, (CompositeReader[]) readers.toArray(),
(CompositeReader[]) storedFieldReaders.toArray());
}
{code}
3) DirectoryReader
{code:java}
protected DirectoryReader(Directory directory, List<LeafReader> segmentReaders)
throws IOException {
super(segmentReaders);
this.directory = directory;
}
{code}
4) BaseCompositeReader
{code:java}
@SuppressWarnings("unchecked")
protected BaseCompositeReader(List<R> subReaders) throws IOException {
this((R[]) subReaders.toArray());
}
{code}
5) Test
I plan to write a test case in "TestParallelCompositeReader".
After write the test case, I will upload the patch.
If you have any questions or requests, please left any comments :D
> Provide List type constructors for BaseCompositeReader based Readers
> --------------------------------------------------------------------
>
> Key: LUCENE-8489
> URL: https://issues.apache.org/jira/browse/LUCENE-8489
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/index
> Reporter: Namgyu Kim
> Priority: Major
> Labels: usability
>
> Currently, Reader based on BaseCompositeReader(MultiReader,
> ParallelCompositeReader, DirectoryReader) does not support List type
> constructor.
> In fact, this does not make a big difference in performance, but users will
> think positively if the API supports more variants.
> I will add the following to support this.
> 1) MultiReader
> {code:java}
> public MultiReader(List<IndexReader> subReaders) throws IOException {
> this(subReaders, true);
> }
> public MultiReader(List<IndexReader> subReaders, boolean closeSubReaders)
> throws IOException {
> this((IndexReader[]) subReaders.toArray(), closeSubReaders);
> }
> {code}
> 2) ParallelCompositeReader
> {code:java}
> public ParallelCompositeReader(List<CompositeReader> readers) throws
> IOException {
> this(true, readers);
> }
> public ParallelCompositeReader(boolean closeSubReaders, List<CompositeReader>
> readers) throws IOException {
> this(closeSubReaders, readers, readers);
> }
> public ParallelCompositeReader(boolean closeSubReaders, List<CompositeReader>
> readers, List<CompositeReader> storedFieldReaders) throws IOException {
> this(closeSubReaders, (CompositeReader[]) readers.toArray(),
> (CompositeReader[]) storedFieldReaders.toArray());
> }
> {code}
> 3) DirectoryReader
> {code:java}
> protected DirectoryReader(Directory directory, List<LeafReader>
> segmentReaders) throws IOException {
> super(segmentReaders);
> this.directory = directory;
> }
> {code}
> 4) BaseCompositeReader
> {code:java}
> @SuppressWarnings("unchecked")
> protected BaseCompositeReader(List<R> subReaders) throws IOException {
> this((R[]) subReaders.toArray());
> }
> {code}
> 5) Test
> I plan to write a test case in "TestParallelCompositeReader".
> After write the test case, I will upload the patch.
>
> If you have any questions or requests, please left any comments :D
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