org.apache.lucene.store
public class FileSwitchDirectory extends Directory
Files with the specified extensions are placed in the primary directory; others are placed in the secondary directory. The provided Set must not change once passed to this class, and must allow multiple threads to call contains at once.
NOTE: this API is new and experimental and is subject to suddenly change in the next release.
isOpen, lockFactory
Constructor and Description |
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FileSwitchDirectory(java.util.Set primaryExtensions,
Directory primaryDir,
Directory secondaryDir,
boolean doClose) |
Modifier and Type | Method and Description |
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void |
close()
Closes the store.
|
IndexOutput |
createOutput(java.lang.String name)
Creates a new, empty file in the directory with the given name.
|
void |
deleteFile(java.lang.String name)
Removes an existing file in the directory.
|
boolean |
fileExists(java.lang.String name)
Returns true iff a file with the given name exists.
|
long |
fileLength(java.lang.String name)
Returns the length of a file in the directory.
|
long |
fileModified(java.lang.String name)
Returns the time the named file was last modified.
|
static java.lang.String |
getExtension(java.lang.String name)
Utility method to return a file's extension.
|
Directory |
getPrimaryDir()
Return the primary directory
|
Directory |
getSecondaryDir()
Return the secondary directory
|
java.lang.String[] |
list()
List the files in the directory.
|
java.lang.String[] |
listAll()
Returns an array of strings, one for each file in the
directory.
|
IndexInput |
openInput(java.lang.String name)
Returns a stream reading an existing file.
|
void |
renameFile(java.lang.String from,
java.lang.String to)
Renames an existing file in the directory.
|
void |
sync(java.lang.String name)
Ensure that any writes to this file are moved to
stable storage.
|
void |
touchFile(java.lang.String name)
Set the modified time of an existing file to now.
|
clearLock, copy, ensureOpen, getLockFactory, getLockID, makeLock, openInput, setLockFactory, toString
public Directory getPrimaryDir()
public Directory getSecondaryDir()
public void close() throws java.io.IOException
Directory
public java.lang.String[] listAll() throws java.io.IOException
Directory
Directory.list()
this method does no
filtering of the contents in a directory, and it will
never return null (throws IOException instead).
Currently this method simply falls back to Directory.list()
for Directory impls outside of Lucene's core &
contrib, but in 3.0 that method will be removed and
this method will become abstract.public java.lang.String[] list() throws java.io.IOException
Directory
public static java.lang.String getExtension(java.lang.String name)
public boolean fileExists(java.lang.String name) throws java.io.IOException
Directory
fileExists
in class Directory
java.io.IOException
public long fileModified(java.lang.String name) throws java.io.IOException
Directory
fileModified
in class Directory
java.io.IOException
public void touchFile(java.lang.String name) throws java.io.IOException
Directory
public void deleteFile(java.lang.String name) throws java.io.IOException
Directory
deleteFile
in class Directory
java.io.IOException
public void renameFile(java.lang.String from, java.lang.String to) throws java.io.IOException
Directory
renameFile
in class Directory
java.io.IOException
public long fileLength(java.lang.String name) throws java.io.IOException
Directory
fileLength
in class Directory
java.io.IOException
public IndexOutput createOutput(java.lang.String name) throws java.io.IOException
Directory
createOutput
in class Directory
java.io.IOException
public void sync(java.lang.String name) throws java.io.IOException
Directory
public IndexInput openInput(java.lang.String name) throws java.io.IOException
Directory
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