weka.core.pmml

## Class BuiltInArithmetic

- java.lang.Object
- - weka.core.pmml.Function
  - - weka.core.pmml.BuiltInArithmetic

- All Implemented Interfaces:
    java.io.Serializable

      public class BuiltInArithmetic
      extends Function

  Built-in function for +, -, *, /.
  Version:
    $Revision 1.0 $
  Author:
    Mark Hall (mhall{[at]}pentaho{[dot]}com)
  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `BuiltInArithmetic(weka.core.pmml.BuiltInArithmetic.Operator op)` Construct a new Arithmetic built-in pmml function.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `Attribute` | `getOutputDef()` Get the structure of the result produced by this function.
    `java.lang.String[]` | `getParameterNames()` Returns an array of the names of the parameters expected as input by this function
    `double` | `getResult(double[] incoming)` Get the result of applying this function.
    `void` | `setParameterDefs(java.util.ArrayList<Attribute> paramDefs)` Set the structure of the parameters that are expected as input by this function.
    `java.lang.String` | `toString()`
    `java.lang.String` | `toString(java.lang.String pad)`

    - ### Methods inherited from class weka.core.pmml.Function

      `getFunction, getFunction, getName`

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### BuiltInArithmetic

          public BuiltInArithmetic(weka.core.pmml.BuiltInArithmetic.Operator op)

      Construct a new Arithmetic built-in pmml function.
      Parameters:
        `op` - the operator to use.

  - ### Method Detail

    - #### setParameterDefs

          public void setParameterDefs(java.util.ArrayList<Attribute> paramDefs)
                                throws java.lang.Exception

      Set the structure of the parameters that are expected as input by this function. This must be called before getOutputDef() is called.
      Specified by:
        `setParameterDefs` in class `Function`
      Parameters:
        `paramDefs` - the structure of the input parameters
      Throws:
        `java.lang.Exception` - if the number or types of parameters are not acceptable by this function

    - #### getParameterNames

          public java.lang.String[] getParameterNames()

      Returns an array of the names of the parameters expected as input by this function
      Specified by:
        `getParameterNames` in class `Function`
      Returns:
        an array of the parameter names

    - #### getOutputDef

          public Attribute getOutputDef()

      Get the structure of the result produced by this function. Subclasses must implement.
      Specified by:
        `getOutputDef` in class `Function`
      Returns:
        the structure of the result produced by this function.

    - #### getResult

          public double getResult(double[] incoming)
                           throws java.lang.Exception

      Get the result of applying this function.
      Specified by:
        `getResult` in class `Function`
      Parameters:
        `incoming` - the arguments to this function (supplied in order to match that of the parameter definitions
      Returns:
        the result of applying this function. When the optype is categorical or ordinal, an index into the values of the output definition is returned.
      Throws:
        `java.lang.Exception` - if there is a problem computing the result of this function

    - #### toString

          public java.lang.String toString()

      Overrides:
        `toString` in class `Function`

    - #### toString

          public java.lang.String toString(java.lang.String pad)

      Overrides:
        `toString` in class `Function`