Package nl.cwi.monetdb.embedded.mapping

Class NullMappings

java.lang.Object
nl.cwi.monetdb.embedded.mapping.NullMappings
public final class NullMappings
extends Object
Helper Class to find the null values mapping between MonetDB and Java.
Author:
Pedro Ferreira

  • Method Details

    • getBooleanNullConstant

      public static byte getBooleanNullConstant()
      Gets MonetDB's boolean null constant.
      Returns:
      MonetDB's boolean null constant

    • getByteNullConstant

      public static byte getByteNullConstant()
      Gets MonetDB's byte null constant.
      Returns:
      MonetDB's byte null constant

    • checkByteIsNull

      public static boolean checkByteIsNull​(byte value)
      Tests if a byte is a null value.
      Parameters:
      value - The value to test
      Returns:
      A boolean indicating if the value is null

    • getShortNullConstant

      public static short getShortNullConstant()
      Gets MonetDB's short null constant.
      Returns:
      MonetDB's short null constant

    • checkShortIsNull

      public static boolean checkShortIsNull​(short value)
      Tests if a short is a null value.
      Parameters:
      value - The value to test
      Returns:
      A boolean indicating if the value is null

    • getIntNullConstant

      public static int getIntNullConstant()
      Gets MonetDB's int null constant.
      Returns:
      MonetDB's int null constant

    • checkIntIsNull

      public static boolean checkIntIsNull​(int value)
      Tests if an integer is a null value.
      Parameters:
      value - The value to test
      Returns:
      A boolean indicating if the value is null

    • getLongNullConstant

      public static long getLongNullConstant()
      Gets MonetDB's long null constant.
      Returns:
      MonetDB's long null constant

    • checkLongIsNull

      public static boolean checkLongIsNull​(long value)
      Tests if a long is a null value.
      Parameters:
      value - The value to test
      Returns:
      A boolean indicating if the value is null

    • getFloatNullConstant

      public static float getFloatNullConstant()
      Gets MonetDB's float null constant.
      Returns:
      MonetDB's float null constant

    • checkFloatIsNull

      public static boolean checkFloatIsNull​(float value)
      Tests if a float is a null value.
      Parameters:
      value - The value to test
      Returns:
      A boolean indicating if the value is null

    • getDoubleNullConstant

      public static double getDoubleNullConstant()
      Gets MonetDB's double null constant.
      Returns:
      MonetDB's double null constant

    • checkDoubleIsNull

      public static boolean checkDoubleIsNull​(double value)
      Tests if a double is a null value.
      Parameters:
      value - The value to test
      Returns:
      A boolean indicating if the value is null

    • getObjectNullConstant

      public static <T> T getObjectNullConstant()
      A null pointer returning method.
      Type Parameters:
      T - The Java class of the mapped MonetDB column
      Returns:
      A null pointer

    • checkObjectIsNull

      public static <T> boolean checkObjectIsNull​(T value)
      Tests if an object is a null value.
      Type Parameters:
      T - The Java class of the mapped MonetDB column
      Parameters:
      value - The value to test
      Returns:
      A boolean indicating if the value is null