Package org.apache.druid.java.util.common

Class Numbers

java.lang.Object
org.apache.druid.java.util.common.Numbers
public final class Numbers extends Object

  • Method Details

    • parseLong

      public static long parseLong(Object val)
      Parse the given object as a long. The input object can be a String or one of the implementations of Number. You may want to use GuavaUtils.tryParseLong() instead if the input is a nullable string and you want to avoid any exceptions.
      Throws:
      NumberFormatException - if the input is an unparseable string.
      NullPointerException - if the input is null.
      ISE - if the input is not a string or a number.

    • parseInt

      public static int parseInt(Object val)
      Parse the given object as a int. The input object can be a String or one of the implementations of Number.
      Throws:
      NumberFormatException - if the input is an unparseable string.
      NullPointerException - if the input is null.
      ISE - if the input is not a string or a number.

    • parseBoolean

      public static boolean parseBoolean(Object val)
      Parse the given object as a boolean. The input object can be a String or Boolean.
      Returns:
      true only if the input is a Boolean representing true or a String of "true".
      Throws:
      NullPointerException - if the input is null.
      ISE - if the input is not a string or a number.

    • tryParseDouble

      public static double tryParseDouble(@Nullable Object val, double nullValue)
      Try parsing the given Number or String object val as double.
      Parameters:
      val -
      nullValue - value to return when input was string type but not parseable into double value
      Returns:
      parsed double value

    • tryParseLong

      public static long tryParseLong(@Nullable Object val, long nullValue)
      Try parsing the given Number or String object val as long.
      Parameters:
      val -
      nullValue - value to return when input was string type but not parseable into long value
      Returns:
      parsed long value

    • tryParseFloat

      public static float tryParseFloat(@Nullable Object val, float nullValue)
      Try parsing the given Number or String object val as float.
      Parameters:
      val -
      nullValue - value to return when input was string type but not parseable into float value
      Returns:
      parsed float value

    • parseDoubleObject

      @Nullable public static Double parseDoubleObject(@Nullable String val)
      Like tryParseDouble(java.lang.Object, double), but does not produce a primitive and will explode if unable to produce a Double similar to Double.parseDouble(java.lang.String)

    • parseLongObject

      @Nullable public static Long parseLongObject(@Nullable String val)
      Like tryParseLong(java.lang.Object, long) but does not produce a primitive and will explode if unable to produce a Long similar to Long.parseLong(java.lang.String, int)