Package com.semedy.reasoner.edb.persistentstore.bplustree

Interface DataFile

All Superinterfaces:
AutoCloseable
All Known Implementing Classes:
BlockedDataFile, DataFileImp, JsonFile, SimpleDataFile
public interface DataFile extends AutoCloseable
Author:
angele

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    checkSanity()
    checks free space list
    boolean
    checkSanity1()
    checks for double occurences
    void
    clear()
    clear file
    void
    close()
    Close file
    void
    create()
    Create a file.
    void
    delete()
    delete file
    Iterator<DataFileElement>
    elements()
    iterator for the file elements
    void
    flush()
    Flush file
    void
    free(long offset)
    Frees up space at offset
    int
    length(long pos)
    length of file piece at pos
    boolean
    open()
    Open an existing file.
    byte[]
    read(long offset)
    Reads data at offset from file and returns it
    int
    readInt(long position)
    read integer at position
    void
    transactionBegin()
    begin transaction
    void
    transactionCommit()
    commit transaction
    void
    transactionRollback()
    rollback transaction
    long
    write(byte[] data)
    write data into file.
    long
    writeCompressed(byte[] data, int originalLength)
    write compressed to file.