Package org.apache.parquet.column.values.bitpacking

Class DevNullValuesWriter

  • public class DevNullValuesWriter
extends ValuesWriter
    This is a special writer that doesn't write anything. The idea being that some columns will always be the same value, and this will capture that. An example is the set of repetition levels for a schema with no repeated fields.

    • Constructor Detail

      • DevNullValuesWriter

        public DevNullValuesWriter()

    • Method Detail

      • getBufferedSize

        public long getBufferedSize()
        Description copied from class: ValuesWriter
        used to decide if we want to work to the next page
        Specified by:
        getBufferedSize in class ValuesWriter
        Returns:
        the size of the currently buffered data (in bytes)

      • reset

        public void reset()
        Description copied from class: ValuesWriter
        called after getBytes() to reset the current buffer and start writing the next page
        Specified by:
        reset in class ValuesWriter

      • writeInteger

        public void writeInteger​(int v)
        Overrides:
        writeInteger in class ValuesWriter
        Parameters:
        v - the value to encode

      • writeByte

        public void writeByte​(int value)
        Overrides:
        writeByte in class ValuesWriter
        Parameters:
        value - the value to encode

      • writeBoolean

        public void writeBoolean​(boolean v)
        Overrides:
        writeBoolean in class ValuesWriter
        Parameters:
        v - the value to encode

      • writeLong

        public void writeLong​(long v)
        Overrides:
        writeLong in class ValuesWriter
        Parameters:
        v - the value to encode

      • writeDouble

        public void writeDouble​(double v)
        Overrides:
        writeDouble in class ValuesWriter
        Parameters:
        v - the value to encode

      • writeFloat

        public void writeFloat​(float v)
        Overrides:
        writeFloat in class ValuesWriter
        Parameters:
        v - the value to encode

      • getBytes

        public org.apache.parquet.bytes.BytesInput getBytes()
        Specified by:
        getBytes in class ValuesWriter
        Returns:
        the bytes buffered so far to write to the current page

      • getEncoding

        public Encoding getEncoding()
        Description copied from class: ValuesWriter
        called after getBytes() and before reset()
        Specified by:
        getEncoding in class ValuesWriter
        Returns:
        the encoding that was used to encode the bytes