Package org.rocksdb

Class SstFileMetaData

  • Direct Known Subclasses:
    LiveFileMetaData
    public class SstFileMetaData
extends java.lang.Object
    The metadata that describes a SST file.

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      protected SstFileMetaData​(java.lang.String fileName, java.lang.String path, long size, long smallestSeqno, long largestSeqno, byte[] smallestKey, byte[] largestKey, long numReadsSampled, boolean beingCompacted, long numEntries, long numDeletions)
      Called from JNI C++

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean beingCompacted()
      Returns true if the file is currently being compacted.
      java.lang.String fileName()
      Get the name of the file.
      byte[] largestKey()
      Get the largest user defined key in the file.
      long largestSeqno()
      Get the largest sequence number in file.
      long numDeletions()
      Get the number of deletions.
      long numEntries()
      Get the number of entries.
      long numReadsSampled()
      Get the number of times the file has been read.
      java.lang.String path()
      Get the full path where the file locates.
      long size()
      Get the file size in bytes.
      byte[] smallestKey()
      Get the smallest user defined key in the file.
      long smallestSeqno()
      Get the smallest sequence number in file.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • SstFileMetaData

        protected SstFileMetaData​(java.lang.String fileName,
                          java.lang.String path,
                          long size,
                          long smallestSeqno,
                          long largestSeqno,
                          byte[] smallestKey,
                          byte[] largestKey,
                          long numReadsSampled,
                          boolean beingCompacted,
                          long numEntries,
                          long numDeletions)
        Called from JNI C++
        Parameters:
        fileName - the file name
        path - the file path
        size - the size of the file
        smallestSeqno - the smallest sequence number
        largestSeqno - the largest sequence number
        smallestKey - the smallest key
        largestKey - the largest key
        numReadsSampled - the number of reads sampled
        beingCompacted - true if the file is being compacted, false otherwise
        numEntries - the number of entries
        numDeletions - the number of deletions

    • Method Detail

      • fileName

        public java.lang.String fileName()
        Get the name of the file.
        Returns:
        the name of the file.

      • path

        public java.lang.String path()
        Get the full path where the file locates.
        Returns:
        the full path

      • size

        public long size()
        Get the file size in bytes.
        Returns:
        file size

      • smallestSeqno

        public long smallestSeqno()
        Get the smallest sequence number in file.
        Returns:
        the smallest sequence number

      • largestSeqno

        public long largestSeqno()
        Get the largest sequence number in file.
        Returns:
        the largest sequence number

      • smallestKey

        public byte[] smallestKey()
        Get the smallest user defined key in the file.
        Returns:
        the smallest user defined key

      • largestKey

        public byte[] largestKey()
        Get the largest user defined key in the file.
        Returns:
        the largest user defined key

      • numReadsSampled

        public long numReadsSampled()
        Get the number of times the file has been read.
        Returns:
        the number of times the file has been read

      • beingCompacted

        public boolean beingCompacted()
        Returns true if the file is currently being compacted.
        Returns:
        true if the file is currently being compacted, false otherwise.

      • numEntries

        public long numEntries()
        Get the number of entries.
        Returns:
        the number of entries.

      • numDeletions

        public long numDeletions()
        Get the number of deletions.
        Returns:
        the number of deletions.