Examples with ExternalDataHandlerSearch org.odk.collect.android.external.handler.ExternalDataHandlerSearch used on opensource projects

Example 1 with ExternalDataHandlerSearch

use of org.odk.collect.android.external.handler.ExternalDataHandlerSearch in project collect by opendatakit.

the class ExternalDataUtil method populateExternalChoices.

public static ArrayList<SelectChoice> populateExternalChoices(FormEntryPrompt formEntryPrompt, XPathFuncExpr xpathfuncexpr) {
    try {
        List<SelectChoice> selectChoices = formEntryPrompt.getSelectChoices();
        ArrayList<SelectChoice> returnedChoices = new ArrayList<SelectChoice>();
        for (SelectChoice selectChoice : selectChoices) {
            String value = selectChoice.getValue();
            if (isAnInteger(value)) {
                // treat this as a static choice
                returnedChoices.add(selectChoice);
            } else {
                String displayColumns = formEntryPrompt.getSelectChoiceText(selectChoice);
                String imageColumn = formEntryPrompt.getSpecialFormSelectChoiceText(selectChoice, FormEntryCaption.TEXT_FORM_IMAGE);
                if (imageColumn != null && imageColumn.startsWith(JR_IMAGES_PREFIX)) {
                    imageColumn = imageColumn.substring(JR_IMAGES_PREFIX.length());
                }
                // if (displayColumns == null || displayColumns.trim().length() == 0) {
                // throw new InvalidSyntaxException("The label column in the choices sheet
                // appears to be empty (or has been calculated as empty).");
                // }
                ExternalDataManager externalDataManager = Collect.getInstance().getExternalDataManager();
                FormInstance formInstance = Collect.getInstance().getFormController().getFormDef().getInstance();
                EvaluationContext baseEvaluationContext = new EvaluationContext(formInstance);
                EvaluationContext evaluationContext = new EvaluationContext(baseEvaluationContext, formEntryPrompt.getIndex().getReference());
                // we can only add only the appropriate by querying the xPathFuncExpr.id.name
                evaluationContext.addFunctionHandler(new ExternalDataHandlerSearch(externalDataManager, displayColumns, value, imageColumn));
                Object eval = xpathfuncexpr.eval(formInstance, evaluationContext);
                if (eval.getClass().isAssignableFrom(ArrayList.class)) {
                    @SuppressWarnings("unchecked") List<SelectChoice> dynamicChoices = (ArrayList<SelectChoice>) eval;
                    for (SelectChoice dynamicChoice : dynamicChoices) {
                        returnedChoices.add(dynamicChoice);
                    }
                } else {
                    throw new ExternalDataException(Collect.getInstance().getString(R.string.ext_search_return_error, eval.getClass().getName()));
                }
            }
        }
        return returnedChoices;
    } catch (Exception e) {
        throw new ExternalDataException(e.getMessage(), e);
    }
}