Package org.apache.lucene.index

Class FilterDirectoryReader.SubReaderWrapper

java.lang.Object

org.apache.lucene.index.FilterDirectoryReader.SubReaderWrapper

Direct Known Subclasses:

ExitableDirectoryReader.ExitableSubReaderWrapper

Enclosing class:

FilterDirectoryReader

public abstract static class FilterDirectoryReader.SubReaderWrapper
extends Object

Factory class passed to FilterDirectoryReader constructor that allows subclasses to wrap the filtered DirectoryReader's subreaders. You can use this to, e.g., wrap the subreaders with specialised FilterLeafReader implementations.

Constructor Summary

Constructors

Constructor	Description
SubReaderWrapper()	Constructor

Method Summary

Modifier and Type	Method	Description
protected LeafReader[]	wrap(List<? extends LeafReader> readers)	Wraps a list of LeafReaders
abstract LeafReader	wrap(LeafReader reader)	Wrap one of the parent DirectoryReader's subreaders

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SubReaderWrapper

public SubReaderWrapper()

Constructor

Method Details

wrap

protected LeafReader[] wrap(List<? extends LeafReader> readers)

Wraps a list of LeafReaders

Returns:

an array of wrapped LeafReaders. The returned array might contain less elements compared to the given reader list if an entire reader is filtered out.

wrap

public abstract LeafReader wrap(LeafReader reader)

Wrap one of the parent DirectoryReader's subreaders

Parameters:

reader - the subreader to wrap

Returns:

a wrapped/filtered LeafReader