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.
isOpen, lockFactory
Constructor and Description |
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FileSwitchDirectory(java.util.Set<java.lang.String> primaryExtensions,
Directory primaryDir,
Directory secondaryDir,
boolean doClose) |
Modifier and Type | Method and Description |
---|---|
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[] |
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 |
sync(java.util.Collection<java.lang.String> names)
Ensure that any writes to these files are moved to
stable storage.
|
void |
sync(java.lang.String name)
Deprecated.
|
void |
touchFile(java.lang.String name)
Deprecated.
|
clearLock, copy, 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
listAll
in class Directory
NoSuchDirectoryException
- if the directory is not prepared for any
write operations (such as Directory.createOutput(String)
).java.io.IOException
- in case of other IO errorspublic 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
@Deprecated 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 long fileLength(java.lang.String name) throws java.io.IOException
Directory
FileNotFoundException
if the file does not exist
fileLength
in class Directory
name
- the name of the file for which to return the length.java.io.FileNotFoundException
- if the file does not exist.java.io.IOException
- if there was an IO error while retrieving the file's
length.public IndexOutput createOutput(java.lang.String name) throws java.io.IOException
Directory
createOutput
in class Directory
java.io.IOException
@Deprecated public void sync(java.lang.String name) throws java.io.IOException
Directory
public void sync(java.util.Collection<java.lang.String> names) throws java.io.IOException
Directory
public IndexInput openInput(java.lang.String name) throws java.io.IOException
Directory