Package org.apache.iotdb.tsfile.encoding.encoder

Class FloatEncoder

  • public class FloatEncoder
extends Encoder
    Encoder for float or double value using rle or two-diff according to following grammar. 
    
 float encoder: <maxPointvalue> <encoded-data>
 maxPointvalue := number for accuracy of decimal places, store as unsigned var int
 encoded-data := same as encoder's pattern

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void encode​(double value, java.io.ByteArrayOutputStream out)  
      void encode​(float value, java.io.ByteArrayOutputStream out)  
      void flush​(java.io.ByteArrayOutputStream out)
      Write all values buffered in memory cache to OutputStream.
      long getMaxByteSize()
      The maximal possible memory size occupied by current Encoder.
      int getOneItemMaxSize()
      When encoder accepts a new incoming data point, the maximal possible size in byte it takes to store in memory.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • FloatEncoder

        public FloatEncoder​(TSEncoding encodingType,
                    TSDataType dataType,
                    int maxPointNumber)

    • Method Detail

      • encode

        public void encode​(float value,
                   java.io.ByteArrayOutputStream out)
        Overrides:
        encode in class Encoder

      • encode

        public void encode​(double value,
                   java.io.ByteArrayOutputStream out)
        Overrides:
        encode in class Encoder

      • flush

        public void flush​(java.io.ByteArrayOutputStream out)
           throws java.io.IOException
        Description copied from class: Encoder
        Write all values buffered in memory cache to OutputStream.
        Specified by:
        flush in class Encoder
        Parameters:
        out - - ByteArrayOutputStream
        Throws:
        java.io.IOException - cannot flush to OutputStream

      • getOneItemMaxSize

        public int getOneItemMaxSize()
        Description copied from class: Encoder
        When encoder accepts a new incoming data point, the maximal possible size in byte it takes to store in memory.
        Overrides:
        getOneItemMaxSize in class Encoder
        Returns:
        the maximal possible size of one data item encoded by this encoder

      • getMaxByteSize

        public long getMaxByteSize()
        Description copied from class: Encoder
        The maximal possible memory size occupied by current Encoder. This statistic value doesn't involve OutputStream.
        Overrides:
        getMaxByteSize in class Encoder
        Returns:
        the maximal size of possible memory occupied by current encoder