Package org.apache.iotdb.commons.udf.builtin

Enum BuiltinFunction

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Comparable<BuiltinFunction>
    public enum BuiltinFunction
extends java.lang.Enum<BuiltinFunction>

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
      DIFF  

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.util.Set<java.lang.String> DEVICE_VIEW_SPECIAL_PROCESS_FUNCTIONS
      We shouldn't apply these functions to each DataRegion for one device, because these functions need all data to calculate correct result.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.String getFunctionName()  
      static java.util.Set<java.lang.String> getNativeFunctionNames()  
      static boolean isMappable​(java.lang.String name)  
      static BuiltinFunction valueOf​(java.lang.String name)
      Returns the enum constant of this type with the specified name.
      static BuiltinFunction[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.

      • Methods inherited from class java.lang.Enum

        clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

    • Field Detail

      • DEVICE_VIEW_SPECIAL_PROCESS_FUNCTIONS

        public static final java.util.Set<java.lang.String> DEVICE_VIEW_SPECIAL_PROCESS_FUNCTIONS
        We shouldn't apply these functions to each DataRegion for one device, because these functions need all data to calculate correct result. So we need to collect all data for one device in one DataRegion, and then apply these functions to only that one DataRegion.

    • Method Detail

      • values

        public static BuiltinFunction[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows: 
        for (BuiltinFunction c : BuiltinFunction.values())
    System.out.println(c);
        Returns:
        an array containing the constants of this enum type, in the order they are declared

      • valueOf

        public static BuiltinFunction valueOf​(java.lang.String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null

      • getFunctionName

        public java.lang.String getFunctionName()

      • getNativeFunctionNames

        public static java.util.Set<java.lang.String> getNativeFunctionNames()

      • isMappable

        public static boolean isMappable​(java.lang.String name)