Class/Object

io.iohk.iodb

FileAccess

Related Docs: object FileAccess | package iodb

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sealed abstract class FileAccess extends AnyRef

Different ways to access files (RandomAccessFile, memory-mapped, direct mmap with Unsafe)

Linear Supertypes
AnyRef, Any
Known Subclasses
ByteBufferFileAccess, FILE_CHANNEL, SAFE
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Abstract Value Members

  1. abstract def close(file: Any): Unit

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    Close file and release all resources associated with file

    Close file and release all resources associated with file

    file

    handle for opened file

  2. abstract def fileSize(fileHandle: Any): Long

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    gets file size of given file

    gets file size of given file

    fileHandle

    for opened file

    returns

    file size

  3. abstract def getValue(fileHandle: Any, key: K, keySize: Int, updateOffset: Long): Option[V]

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  4. abstract def open(fileName: String): Any

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    Opens new file

    Opens new file

    fileName

    name of file

    returns

    handle for opened file in given file access method

  5. abstract def readData(fileHandle: Any, offset: Int, data: Array[Byte]): Unit

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    Reads data from given offset

  6. abstract def readKeyValues(fileHandle: Any, offset: Long, keySize: Int): Iterator[(K, V)]

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    Read all key-value pairs from given log file

    Read all key-value pairs from given log file

    offset

    offset where keys are starting

    keySize

    size of key

    returns

    iterator over key-value pairs

Concrete Value Members

  1. final def !=(arg0: Any): Boolean

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  2. final def ##(): Int

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  4. final def asInstanceOf[T0]: T0

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  5. def clone(): AnyRef

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  6. final def eq(arg0: AnyRef): Boolean

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  7. def equals(arg0: Any): Boolean

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  8. def finalize(): Unit

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  9. final def getClass(): Class[_]

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  10. def hashCode(): Int

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  11. final def isInstanceOf[T0]: Boolean

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  12. final def ne(arg0: AnyRef): Boolean

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  13. final def notify(): Unit

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  14. final def notifyAll(): Unit

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  15. final def synchronized[T0](arg0: ⇒ T0): T0

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  16. def toString(): String

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  17. final def wait(): Unit

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  18. final def wait(arg0: Long, arg1: Int): Unit

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  19. final def wait(arg0: Long): Unit

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