org.apache.lucene.store
Class TrackingDirectoryWrapper
java.lang.Object
org.apache.lucene.store.Directory
org.apache.lucene.store.FilterDirectory
org.apache.lucene.store.TrackingDirectoryWrapper
- All Implemented Interfaces:
- Closeable
public final class TrackingDirectoryWrapper
- extends FilterDirectory
A delegating Directory that records which files were
written to and deleted.
Methods inherited from class org.apache.lucene.store.FilterDirectory |
clearLock, close, fileExists, fileLength, getDelegate, getLockFactory, getLockID, listAll, makeLock, openInput, setLockFactory, sync, toString |
TrackingDirectoryWrapper
public TrackingDirectoryWrapper(Directory in)
deleteFile
public void deleteFile(String name)
throws IOException
- Description copied from class:
Directory
- Removes an existing file in the directory.
- Overrides:
deleteFile
in class FilterDirectory
- Throws:
IOException
createOutput
public IndexOutput createOutput(String name,
IOContext context)
throws IOException
- Description copied from class:
Directory
- Creates a new, empty file in the directory with the given name.
Returns a stream writing this file.
- Overrides:
createOutput
in class FilterDirectory
- Throws:
IOException
copy
public void copy(Directory to,
String src,
String dest,
IOContext context)
throws IOException
- Description copied from class:
Directory
- Copies the file src to
Directory
to under the new
file name dest.
If you want to copy the entire source directory to the destination one, you
can do so like this:
Directory to; // the directory to copy to
for (String file : dir.listAll()) {
dir.copy(to, file, newFile, IOContext.DEFAULT); // newFile can be either file, or a new name
}
NOTE: this method does not check whether dest exist and will
overwrite it if it does.
- Overrides:
copy
in class Directory
- Throws:
IOException
createSlicer
public Directory.IndexInputSlicer createSlicer(String name,
IOContext context)
throws IOException
- Description copied from class:
Directory
- Creates an
Directory.IndexInputSlicer
for the given file name.
IndexInputSlicer allows other Directory
implementations to
efficiently open one or more sliced IndexInput
instances from a
single file handle. The underlying file handle is kept open until the
Directory.IndexInputSlicer
is closed.
- Must throw
FileNotFoundException
if the file does not exist
(not java.nio.file.NoSuchFileException
of Java 7).
- Overrides:
createSlicer
in class Directory
- Throws:
IOException
- if an IOException
occurs
getCreatedFiles
public Set<String> getCreatedFiles()
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