Package org.h2.test.store

Class RowDataType

  • All Implemented Interfaces:
    java.util.Comparator<java.lang.Object[]>, DataType<java.lang.Object[]>
    public class RowDataType
extends BasicDataType<java.lang.Object[]>
    A row type.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      int compare​(java.lang.Object[] ax, java.lang.Object[] bx)
      Compare two keys.
      java.lang.Object[][] createStorage​(int size)
      Create storage object of array type to hold values
      int getMemory​(java.lang.Object[] x)
      Calculates the amount of used memory in bytes.
      java.lang.Object[] read​(java.nio.ByteBuffer buff)
      Read an object.
      void write​(WriteBuffer buff, java.lang.Object[] x)
      Write an object.

      • Methods inherited from class java.lang.Object

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

      • Methods inherited from interface java.util.Comparator

        reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

    • Method Detail

      • createStorage

        public java.lang.Object[][] createStorage​(int size)
        Description copied from interface: DataType
        Create storage object of array type to hold values
        Parameters:
        size - number of values to hold
        Returns:
        storage object

      • compare

        public int compare​(java.lang.Object[] ax,
                   java.lang.Object[] bx)
        Description copied from interface: DataType
        Compare two keys.
        Specified by:
        compare in interface java.util.Comparator<java.lang.Object[]>
        Specified by:
        compare in interface DataType<java.lang.Object[]>
        Overrides:
        compare in class BasicDataType<java.lang.Object[]>
        Parameters:
        ax - the first key
        bx - the second key
        Returns:
        -1 if the first key is smaller, 1 if larger, and 0 if equal

      • getMemory

        public int getMemory​(java.lang.Object[] x)
        Description copied from interface: DataType
        Calculates the amount of used memory in bytes.
        Specified by:
        getMemory in interface DataType<java.lang.Object[]>
        Specified by:
        getMemory in class BasicDataType<java.lang.Object[]>
        Parameters:
        x - the object
        Returns:
        the used memory

      • read

        public java.lang.Object[] read​(java.nio.ByteBuffer buff)
        Description copied from interface: DataType
        Read an object.
        Specified by:
        read in interface DataType<java.lang.Object[]>
        Specified by:
        read in class BasicDataType<java.lang.Object[]>
        Parameters:
        buff - the source buffer
        Returns:
        the object

      • write

        public void write​(WriteBuffer buff,
                  java.lang.Object[] x)
        Description copied from interface: DataType
        Write an object.
        Specified by:
        write in interface DataType<java.lang.Object[]>
        Specified by:
        write in class BasicDataType<java.lang.Object[]>
        Parameters:
        buff - the target buffer
        x - the value