Examples with TreeReference org.javarosa.core.model.instance.TreeReference used on opensource projects

Example 46 with TreeReference

use of org.javarosa.core.model.instance.TreeReference in project javarosa by opendatakit.

the class FormInstanceParser method verifyBindings.

private void verifyBindings(FormInstance instance, String mainInstanceNodeName) {
    // check <bind>s (can't bind to '/', bound nodes actually exist)
    for (int i = 0; i < bindings.size(); i++) {
        DataBinding bind = bindings.get(i);
        TreeReference ref = FormInstance.unpackReference(bind.getReference());
        if (ref.size() == 0) {
            Std.out.println("Cannot bind to '/'; ignoring bind...");
            bindings.remove(i);
            i--;
        } else {
            List<TreeReference> nodes = new EvaluationContext(instance).expandReference(ref, true);
            if (nodes.size() == 0) {
                reporter.warning(XFormParserReporter.TYPE_ERROR_PRONE, "<bind> defined for a node that doesn't exist [" + ref.toString() + "]. The node's name was probably changed and the bind should be updated. ", null);
            }
        }
    }
    // check <repeat>s (can't bind to '/' or '/data')
    for (TreeReference ref : getRepeatableRefs()) {
        if (ref.size() <= 1) {
            throw new XFormParseException("Cannot bind repeat to '/' or '/" + mainInstanceNodeName + "'");
        }
    }
    // check control/group/repeat bindings (bound nodes exist, question can't bind to '/')
    List<String> bindErrors = new ArrayList<>();
    verifyControlBindings(formDef, instance, bindErrors);
    if (bindErrors.size() > 0) {
        String errorMsg = "";
        for (String bindError : bindErrors) {
            errorMsg += bindError + "\n";
        }
        throw new XFormParseException(errorMsg);
    }
    // check that repeat members bind to the proper scope (not above the binding of the parent repeat, and not within any sub-repeat (or outside repeat))
    verifyRepeatMemberBindings(formDef, instance, null);
    // check that label/copy/value refs are children of nodeset ref, and exist
    verifyItemsetBindings(instance);
    verifyItemsetSrcDstCompatibility(instance);
}

Example 47 with TreeReference

use of org.javarosa.core.model.instance.TreeReference in project javarosa by opendatakit.

the class FormInstanceParser method verifyControlBindings.

private void verifyControlBindings(IFormElement fe, FormInstance instance, List<String> errors) {
    // throws XmlPullParserException {
    if (fe.getChildren() == null)
        return;
    for (int i = 0; i < fe.getChildren().size(); i++) {
        IFormElement child = fe.getChildren().get(i);
        IDataReference ref = null;
        String type = null;
        if (child instanceof GroupDef) {
            ref = child.getBind();
            type = (((GroupDef) child).getRepeat() ? "Repeat" : "Group");
        } else if (child instanceof QuestionDef) {
            ref = child.getBind();
            type = "Question";
        }
        TreeReference tref = FormInstance.unpackReference(ref);
        if (child instanceof QuestionDef && tref.size() == 0) {
            // group can bind to '/'; repeat can't, but that's checked above
            reporter.warning(XFormParserReporter.TYPE_INVALID_STRUCTURE, "Cannot bind control to '/'", null);
        } else {
            List<TreeReference> nodes = new EvaluationContext(instance).expandReference(tref, true);
            if (nodes.size() == 0) {
                String error = type + " bound to non-existent node: [" + tref.toString() + "]";
                reporter.error(error);
                errors.add(error);
            }
        // we can't check whether questions map to the right kind of node ('data' node vs. 'sub-tree' node) as that depends
        // on the question's data type, which we don't know yet
        }
        verifyControlBindings(child, instance, errors);
    }
}

Example 48 with TreeReference

use of org.javarosa.core.model.instance.TreeReference in project javarosa by opendatakit.

the class FormInstanceParser method applyInstanceProperties.

private void applyInstanceProperties(FormInstance instance) {
    for (DataBinding bind : bindings) {
        final TreeReference ref = FormInstance.unpackReference(bind.getReference());
        final List<TreeReference> nodes = new EvaluationContext(instance).expandReference(ref, true);
        if (nodes.size() > 0) {
            attachBindGeneral(bind);
        }
        for (TreeReference nref : nodes) {
            attachBind(instance.resolveReference(nref), bind);
        }
    }
    applyControlProperties(instance);
}

Example 49 with TreeReference

use of org.javarosa.core.model.instance.TreeReference in project javarosa by opendatakit.

the class FormEntryModel method createModelIfNecessary.

/**
 * For the current index: Checks whether the index represents a node which
 * should exist given a non-interactive repeat, along with a count for that
 * repeat which is beneath the dynamic level specified.
 *
 * If this index does represent such a node, the new model for the repeat is
 * created behind the scenes and the index for the initial question is
 * returned.
 *
 * Note: This method will not prevent the addition of new repeat elements in
 * the interface, it will merely use the xforms repeat hint to create new
 * nodes that are assumed to exist
 *
 * @param index The index to be evaluated as to whether the underlying model is
 *        hinted to exist
 */
private void createModelIfNecessary(FormIndex index) {
    if (index.isInForm()) {
        IFormElement e = getForm().getChild(index);
        if (e instanceof GroupDef) {
            GroupDef g = (GroupDef) e;
            if (g.getRepeat() && g.getCountReference() != null) {
                // Lu Gram: repeat count XPath needs to be contextualized for nested repeat groups
                TreeReference countRef = FormInstance.unpackReference(g.getCountReference());
                TreeReference contextualized = countRef.contextualize(index.getReference());
                IAnswerData count = getForm().getMainInstance().resolveReference(contextualized).getValue();
                if (count != null) {
                    long fullcount = ((Integer) count.getValue()).intValue();
                    TreeReference ref = getForm().getChildInstanceRef(index);
                    TreeElement element = getForm().getMainInstance().resolveReference(ref);
                    if (element == null) {
                        if (index.getTerminal().getInstanceIndex() < fullcount) {
                            try {
                                getForm().createNewRepeat(index);
                            } catch (InvalidReferenceException ire) {
                                Std.printStack(ire);
                                throw new RuntimeException("Invalid Reference while creting new repeat!" + ire.getMessage());
                            }
                        }
                    }
                }
            }
        }
    }
}

Example 50 with TreeReference

use of org.javarosa.core.model.instance.TreeReference in project javarosa by opendatakit.

the class FormEntryModel method setRepeatNextMultiplicity.

private boolean setRepeatNextMultiplicity(List<IFormElement> elements, List<Integer> multiplicities) {
    // find out if node is repeatable
    TreeReference nodeRef = form.getChildInstanceRef(elements, multiplicities);
    TreeElement node = form.getMainInstance().resolveReference(nodeRef);
    if (node == null || node.isRepeatable()) {
        // node == null if there are no instances of the repeat
        IFormElement lastElement = elements.get(elements.size() - 1);
        if (lastElement instanceof GroupDef && !((GroupDef) lastElement).getRepeat()) {
            // it's a regular group inside a repeatable group
            return false;
        }
        int mult;
        if (node == null) {
            // no repeats; next is 0
            mult = 0;
        } else {
            String name = node.getName();
            TreeElement parentNode = form.getMainInstance().resolveReference(nodeRef.getParentRef());
            mult = parentNode.getChildMultiplicity(name);
        }
        multiplicities.set(multiplicities.size() - 1, repeatStructure == REPEAT_STRUCTURE_NON_LINEAR ? TreeReference.INDEX_REPEAT_JUNCTURE : mult);
        return true;
    } else {
        return false;
    }
}