core/org.gnit.lucenekmp.store/LockValidatingDirectoryWrapper

LockValidatingDirectoryWrapper

class LockValidatingDirectoryWrapper(in: Directory, writeLock: Lock) : FilterDirectory

This class makes a best-effort check that a provided Lock is valid before any destructive filesystem operation.

Constructors

constructor(in: Directory, writeLock: Lock)

Properties

val in: Directory

Return the wrapped Directory.

pendingDeletions

open override val pendingDeletions: MutableSet<String>

Functions

open override fun close()

Closes the directory.

copyFrom

open override fun copyFrom(from: Directory, src: String, dest: String, context: IOContext)

Copies an existing src file from directory from to a non-existent file dest in this directory. The given IOContext is only used for opening the destination file.

createOutput

open override fun createOutput(name: String, context: IOContext): IndexOutput

Creates a new, empty file in the directory and returns an IndexOutput instance for appending data to this file.

createTempOutput

open override fun createTempOutput(prefix: String, suffix: String, context: IOContext): IndexOutput

Creates a new, empty, temporary file in the directory and returns an IndexOutput instance for appending data to this file.

deleteFile

open override fun deleteFile(name: String)

Removes an existing file in the directory.

ensureOpen

open override fun ensureOpen()

Ensures this directory is still open.

fileLength

open override fun fileLength(name: String): Long

Returns the byte length of a file in the directory.

getDelegate

fun getDelegate(): Directory

listAll

open override fun listAll(): Array<String>

Returns names of all files stored in this directory. The output must be in sorted (UTF-16, java's String.compareTo) order.

obtainLock

open override fun obtainLock(name: String): Lock

Acquires and returns a Lock for a file with the given name.

openChecksumInput

open fun openChecksumInput(name: String): ChecksumIndexInput

Opens a checksum-computing stream for reading an existing file.

openInput

open override fun openInput(name: String, context: IOContext): IndexInput

Opens a stream for reading an existing file.

rename

open override fun rename(source: String, dest: String)

Renames source file to dest file where dest must not already exist in the directory.

sync

open override fun sync(names: MutableCollection<String>)

Ensures that any writes to these files are moved to stable storage (made durable).

syncMetaData

open override fun syncMetaData()

Ensures that directory metadata, such as recent file renames, are moved to stable storage.

toString

open override fun toString(): String