MATLAB BUILDER JA 2 Guide de l'utilisateur télécharger pdf (Page 270)

6 Reference Infor mation for Java

Programming Interfaces Generated by Java Builder

• “APIs Based on MATLAB Function Signatures” on page 6-14

• “Standard API” on page 6-15

• “mlx API” on page 6-17

• “Code Fragment: Signatures Generated for myprimes Exam ple” on page

6-17

APIs Based on MATLAB Function Signatures

Jav a B uilde r g enerates tw o kinds of interfaces to handle MATLAB function

signatures.

• A standard signature in Java.

This interface specifies input arguments for each overloaded method as

oneormoreinputargumentsofclass

java.lang.Object or any subclass

(including subclasses of

MWArray). The standard interface specifies return

values,ifany,asasubclassof

MWArray.

• mlx API

This interface allows the user to specify the inputs to a function as an

Object array, where each array e lem ent is one input argument. Similarly,

theuseralsogivesthemlxinterfaceapre-allocatedObjectarraytohold

the outputs of the function. The allocated length of the output array

determines the num ber o f desired function outputs.

The mlx interface may also be accessed using java.util.List containers

in place of Object arrays for the inputs and outputs. Note that if List

containers are used, the output List passed in must contain a number of

elements equal to the desired number of function outputs.

For example, this would be incorrect usage:

java.util.List outputs = new ArrayList(3);

myclass.myfunction(outputs, inputs); // outputs contains 0 elements!

And this would be the correct usage:

java.util.List outputs = Arrays.asList(new Object[3]);

myclass.myfunction(outputs, inputs); // ok, list contains 3 elements

6-14

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MATLAB BUILDER JA 2 Guide de l'utilisateur Page 270