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## Uses of Class
org.apache.lucene.index.DirectoryReader

Packages that use DirectoryReader
org.apache.lucene.index | Code to maintain and access indices.

Uses of DirectoryReader in org.apache.lucene.index

Subclasses of DirectoryReader in org.apache.lucene.index
`class` | `FilterDirectoryReader` A FilterDirectoryReader wraps another DirectoryReader, allowing implementations to transform or extend it.

Fields in org.apache.lucene.index declared as DirectoryReader
`protected DirectoryReader` | `FilterDirectoryReader.in` The filtered DirectoryReader

Methods in org.apache.lucene.index that return DirectoryReader
`protected DirectoryReader` | `FilterDirectoryReader.doOpenIfChanged()`
`protected abstract DirectoryReader` | `DirectoryReader.doOpenIfChanged()` Implement this method to support `openIfChanged(DirectoryReader)`.
`protected DirectoryReader` | `FilterDirectoryReader.doOpenIfChanged(IndexCommit commit)`
`protected abstract DirectoryReader` | `DirectoryReader.doOpenIfChanged(IndexCommit commit)` Implement this method to support `openIfChanged(DirectoryReader,IndexCommit)`.
`protected DirectoryReader` | `FilterDirectoryReader.doOpenIfChanged(IndexWriter writer, boolean applyAllDeletes)`
`protected abstract DirectoryReader` | `DirectoryReader.doOpenIfChanged(IndexWriter writer, boolean applyAllDeletes)` Implement this method to support `openIfChanged(DirectoryReader,IndexWriter,boolean)`.
`protected abstract DirectoryReader` | `FilterDirectoryReader.doWrapDirectoryReader(DirectoryReader in)` Called by the doOpenIfChanged() methods to return a new wrapped DirectoryReader.
`static DirectoryReader` | `IndexReader.open(Directory directory)` Deprecated. Use `open(Directory)`
`static DirectoryReader` | `DirectoryReader.open(Directory directory)` Returns a IndexReader reading the index in the given Directory
`static DirectoryReader` | `IndexReader.open(Directory directory, int termInfosIndexDivisor)` Deprecated. Use `open(Directory,int)`
`static DirectoryReader` | `DirectoryReader.open(Directory directory, int termInfosIndexDivisor)` Expert: Returns a IndexReader reading the index in the given Directory with the given termInfosIndexDivisor.
`static DirectoryReader` | `IndexReader.open(IndexCommit commit)` Deprecated. Use `open(IndexCommit)`
`static DirectoryReader` | `DirectoryReader.open(IndexCommit commit)` Expert: returns an IndexReader reading the index in the given `IndexCommit`.
`static DirectoryReader` | `IndexReader.open(IndexCommit commit, int termInfosIndexDivisor)` Deprecated. Use `open(IndexCommit,int)`
`static DirectoryReader` | `DirectoryReader.open(IndexCommit commit, int termInfosIndexDivisor)` Expert: returns an IndexReader reading the index in the given `IndexCommit` and termInfosIndexDivisor.
`static DirectoryReader` | `IndexReader.open(IndexWriter writer, boolean applyAllDeletes)` Deprecated. Use `open(IndexWriter,boolean)`
`static DirectoryReader` | `DirectoryReader.open(IndexWriter writer, boolean applyAllDeletes)` Open a near real time IndexReader from the `IndexWriter`.
`static DirectoryReader` | `DirectoryReader.openIfChanged(DirectoryReader oldReader)` If the index has changed since the provided reader was opened, open and return a new reader; else, return null.
`static DirectoryReader` | `DirectoryReader.openIfChanged(DirectoryReader oldReader, IndexCommit commit)` If the IndexCommit differs from what the provided reader is searching, open and return a new reader; else, return null.
`static DirectoryReader` | `DirectoryReader.openIfChanged(DirectoryReader oldReader, IndexWriter writer, boolean applyAllDeletes)` Expert: If there changes (committed or not) in the `IndexWriter` versus what the provided reader is searching, then open and return a new IndexReader searching both committed and uncommitted changes from the writer; else, return null (though, the current implementation never returns null).
`protected DirectoryReader` | `ReaderManager.refreshIfNeeded(DirectoryReader referenceToRefresh)`

Methods in org.apache.lucene.index with parameters of type DirectoryReader
`protected void` | `ReaderManager.decRef(DirectoryReader reference)`
`protected abstract DirectoryReader` | `FilterDirectoryReader.doWrapDirectoryReader(DirectoryReader in)` Called by the doOpenIfChanged() methods to return a new wrapped DirectoryReader.
`static DirectoryReader` | `DirectoryReader.openIfChanged(DirectoryReader oldReader)` If the index has changed since the provided reader was opened, open and return a new reader; else, return null.
`static DirectoryReader` | `DirectoryReader.openIfChanged(DirectoryReader oldReader, IndexCommit commit)` If the IndexCommit differs from what the provided reader is searching, open and return a new reader; else, return null.
`static DirectoryReader` | `DirectoryReader.openIfChanged(DirectoryReader oldReader, IndexWriter writer, boolean applyAllDeletes)` Expert: If there changes (committed or not) in the `IndexWriter` versus what the provided reader is searching, then open and return a new IndexReader searching both committed and uncommitted changes from the writer; else, return null (though, the current implementation never returns null).
`protected DirectoryReader` | `ReaderManager.refreshIfNeeded(DirectoryReader referenceToRefresh)`
`protected boolean` | `ReaderManager.tryIncRef(DirectoryReader reference)`

Constructors in org.apache.lucene.index with parameters of type DirectoryReader
`FilterDirectoryReader(DirectoryReader in)` Create a new FilterDirectoryReader that filters a passed in DirectoryReader.
`FilterDirectoryReader(DirectoryReader in, FilterDirectoryReader.SubReaderWrapper wrapper)` Create a new FilterDirectoryReader that filters a passed in DirectoryReader, using the supplied SubReaderWrapper to wrap its subreader.

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