DataUtil¶

Helper methods for creating Java-compatible arguments.

createDoubleArray( size )

Returns a new Java double array of the given size.

createIntArray( size )

Returns a new Java int array of the given size.

createMacrosInput( include_parent_macros )

Create a new MacrosInput object, useful when creating a container widget through scripting.

include_parent_macros is a boolean value that indicates if the MacrosInput should inherit or start blank.

toJavaDoubleArray( array )

Returns a Java array that matches the provided script array.

toJavaIntArray( array )

Returns a Java array that matches the provided script array.

Example

The following scripts do the same but in different ways:

// Create a Java array, then add to it
var arr = DataUtil.createDoubleArray(100);
for (var i = 0; i < 100; i++) {
    arr[i] = i;
}
pvs[0].setValue(arr);

// Create a JavaScript array, then convert it to Java
var arr = [];
for (var i = 0; i < 100; i++) {
    arr[i] = i;
}
pvs[0].setValue(DataUtil.toJavaDoubleArray(arr));

Note that the same can actually also be achieved by not using DataUtil, but instead the Java class available to Nashorn scripts:

var arr = [];
for (var i = 0; i < 100; i++) {
    arr[i] = i;
}
pvs[0].setValue(Java.to(arr, "double[]"));