Examples with PowerFeature org.jpmml.converter.PowerFeature used on opensource projects

Example 1 with PowerFeature

use of org.jpmml.converter.PowerFeature in project jpmml-r by jpmml.

the class Formula method addField.

public void addField(Field<?> field) {
    RExpEncoder encoder = getEncoder();
    Feature feature = new ContinuousFeature(encoder, field);
    if (field instanceof DerivedField) {
        DerivedField derivedField = (DerivedField) field;
        Expression expression = derivedField.getExpression();
        if (expression instanceof Apply) {
            Apply apply = (Apply) expression;
            if (checkApply(apply, "pow", FieldRef.class, Constant.class)) {
                List<Expression> expressions = apply.getExpressions();
                FieldRef fieldRef = (FieldRef) expressions.get(0);
                Constant constant = (Constant) expressions.get(1);
                try {
                    int power = Integer.parseInt(constant.getValue());
                    feature = new PowerFeature(encoder, fieldRef.getField(), DataType.DOUBLE, power);
                } catch (NumberFormatException nfe) {
                // Ignored
                }
            }
        }
    }
    putFeature(field.getName(), feature);
    this.fields.add(field);
}