Examples with UnitConversion com.axelor.apps.base.db.UnitConversion used on opensource projects

Example 1 with UnitConversion

use of com.axelor.apps.base.db.UnitConversion in project axelor-open-suite by axelor.

the class UnitConversionService method getCoefficient.

/**
 * Get the conversion coefficient between two units from a conversion list. If the start unit and
 * the end unit can not be found in the list, then the units are swapped. If there still isn't any
 * result, an Exception is thrown.
 *
 * @param unitConversionList A list of conversions between units
 * @param startUnit The start unit
 * @param endUnit The end unit
 * @param product Optional, a product used for complex conversions. INput null if needless.
 * @return A conversion coefficient to convert from startUnit to endUnit.
 * @throws AxelorException The required units are not found in the conversion list.
 * @throws CompilationFailedException
 * @throws ClassNotFoundException
 * @throws IOException
 */
public BigDecimal getCoefficient(List<? extends UnitConversion> unitConversionList, Unit startUnit, Unit endUnit, Product product) throws AxelorException, CompilationFailedException, ClassNotFoundException, IOException {
    /* Looking for the start unit and the end unit in the unitConversionList to get the coefficient */
    if (product != null) {
        this.maker = new TemplateMaker(Optional.ofNullable(AuthUtils.getUser()).map(User::getActiveCompany).orElse(null) != null ? Optional.ofNullable(AuthUtils.getUser()).map(User::getActiveCompany).map(Company::getTimezone).orElse(null) : "", AppFilter.getLocale(), TEMPLATE_DELIMITER, TEMPLATE_DELIMITER);
        this.maker.setContext(product, "Product");
    }
    String eval = null;
    for (UnitConversion unitConversion : unitConversionList) {
        if (unitConversion.getStartUnit().equals(startUnit) && unitConversion.getEndUnit().equals(endUnit)) {
            if (unitConversion.getTypeSelect() == UnitConversionRepository.TYPE_COEFF) {
                return unitConversion.getCoef();
            } else if (product != null) {
                maker.setTemplate(unitConversion.getFormula());
                eval = maker.make();
                CompilerConfiguration conf = new CompilerConfiguration();
                ImportCustomizer customizer = new ImportCustomizer();
                customizer.addStaticStars("java.lang.Math");
                conf.addCompilationCustomizers(customizer);
                Binding binding = new Binding();
                GroovyShell shell = new GroovyShell(binding, conf);
                return new BigDecimal(shell.evaluate(eval).toString());
            }
        }
        if (unitConversion.getStartUnit().equals(endUnit) && unitConversion.getEndUnit().equals(startUnit)) {
            if (unitConversion.getTypeSelect() == UnitConversionRepository.TYPE_COEFF && unitConversion.getCoef().compareTo(BigDecimal.ZERO) != 0) {
                return BigDecimal.ONE.divide(unitConversion.getCoef(), DEFAULT_COEFFICIENT_SCALE, RoundingMode.HALF_UP);
            } else if (product != null) {
                maker.setTemplate(unitConversion.getFormula());
                eval = maker.make();
                CompilerConfiguration conf = new CompilerConfiguration();
                ImportCustomizer customizer = new ImportCustomizer();
                customizer.addStaticStars("java.lang.Math");
                conf.addCompilationCustomizers(customizer);
                Binding binding = new Binding();
                GroovyShell shell = new GroovyShell(binding, conf);
                BigDecimal result = new BigDecimal(shell.evaluate(eval).toString());
                if (result.compareTo(BigDecimal.ZERO) != 0) {
                    return BigDecimal.ONE.divide(result, DEFAULT_COEFFICIENT_SCALE, RoundingMode.HALF_UP);
                }
            }
        }
    }
    /* If there is no startUnit and endUnit in the UnitConversion list so we throw an exception */
    throw new AxelorException(TraceBackRepository.CATEGORY_CONFIGURATION_ERROR, I18n.get(IExceptionMessage.UNIT_CONVERSION_1), startUnit.getName(), endUnit.getName());
}