Examples with XPathException org.javarosa.xpath.XPathException used on opensource projects

Example 1 with XPathException

use of org.javarosa.xpath.XPathException in project javarosa by opendatakit.

the class XPathEvalTest method testEval.

private void testEval(String expr, FormInstance model, EvaluationContext ec, Object expected) {
    XPathExpression xpe = null;
    boolean exceptionExpected = (expected instanceof XPathException);
    if (ec == null) {
        ec = new EvaluationContext(model);
    }
    try {
        xpe = XPathParseTool.parseXPath(expr);
    } catch (XPathSyntaxException xpse) {
        System.out.println("Parsing " + expr + " failed with " + xpse.toString());
    }
    if (xpe == null) {
        fail("Null expression or syntax error");
    }
    try {
        Object result = xpe.eval(model, ec);
        if (exceptionExpected) {
            fail("Expected exception, expression : " + expr);
        } else if ((result instanceof Double && expected instanceof Double)) {
            if (!expected.equals(result)) {
                System.out.println(String.format("%s result %s differed from expected %s", expr, result, expected));
            }
            assertEquals((Double) expected, (Double) result, 1e-12);
        } else if (result instanceof XPathNodeset && expected instanceof XPathNodeset) {
            XPathNodeset expectedAsXPathNodeset = (XPathNodeset) expected;
            XPathNodeset resultAsXPathNodeset = (XPathNodeset) result;
            assertEquals(expectedAsXPathNodeset.size(), resultAsXPathNodeset.size());
            assertEquals(expectedAsXPathNodeset.getRefAt(0), resultAsXPathNodeset.getRefAt(0));
            assertEquals(expectedAsXPathNodeset.unpack(), resultAsXPathNodeset.unpack());
            assertEquals(expectedAsXPathNodeset.toArgList().length, resultAsXPathNodeset.toArgList().length);
            for (int i = 0; i < expectedAsXPathNodeset.toArgList().length; i++) {
                assertEquals(expectedAsXPathNodeset.toArgList()[i], resultAsXPathNodeset.toArgList()[i]);
            }
        } else {
            assertEquals(expected, result);
        }
    } catch (XPathException xpex) {
        if (!exceptionExpected) {
            fail("Unexpected exception: " + xpex);
        } else if (xpex.getClass() != expected.getClass()) {
            fail("Did not get expected exception type");
        }
    }
}

Example 2 with XPathException

use of org.javarosa.xpath.XPathException in project javarosa by opendatakit.

the class XPathPathExpr method eval.

public XPathNodeset eval(DataInstance m, EvaluationContext ec) {
    TreeReference genericRef = getReference();
    TreeReference ref;
    if (genericRef.getContext() == TreeReference.CONTEXT_ORIGINAL) {
        ref = genericRef.contextualize(ec.getOriginalContext());
    } else {
        ref = genericRef.contextualize(ec.getContextRef());
    }
    // check if this nodeset refers to a non-main instance
    if (ref.getInstanceName() != null && ref.isAbsolute()) {
        DataInstance nonMain = ec.getInstance(ref.getInstanceName());
        if (nonMain != null) {
            m = nonMain;
        } else {
            throw new XPathMissingInstanceException(ref.getInstanceName(), "Instance referenced by " + ref.toString(true) + " does not exist");
        }
    } else {
        // TODO: We should really stop passing 'm' around and start just getting the right instance from ec
        // at a more central level
        m = ec.getMainInstance();
        if (m == null) {
            String refStr = ref == null ? "" : ref.toString(true);
            throw new XPathException("Cannot evaluate the reference [" + refStr + "] in the current evaluation context. No default instance has been declared!");
        }
    }
    // regardless of the above, we want to ensure there is a definition
    if (m.getRoot() == null) {
        // This instance is _declared_, but doesn't actually have any data in it.
        throw new XPathMissingInstanceException(ref.getInstanceName(), "Instance referenced by " + ref.toString(true) + " has not been loaded");
    }
    // this makes no sense...
    // if (ref.isAbsolute() && m.getTemplatePath(ref) == null) {
    // List<TreeReference> nodesetRefs = new List<TreeReference>();
    // return new XPathNodeset(nodesetRefs, m, ec);
    // }
    List<TreeReference> nodesetRefs = ec.expandReference(ref);
    // to fix conditions based on non-relevant data, filter the nodeset by relevancy
    for (int i = 0; i < nodesetRefs.size(); i++) {
        if (!m.resolveReference(nodesetRefs.get(i)).isRelevant()) {
            nodesetRefs.remove(i);
            i--;
        }
    }
    return new XPathNodeset(nodesetRefs, m, ec);
}

Example 3 with XPathException

use of org.javarosa.xpath.XPathException in project javarosa by opendatakit.

the class StandardBindAttributesProcessor method createBinding.

DataBinding createBinding(IXFormParserFunctions parserFunctions, FormDef formDef, Collection<String> usedAttributes, Collection<String> passedThroughAttributes, Element element) {
    final DataBinding binding = new DataBinding();
    binding.setId(element.getAttributeValue("", ID_ATTR));
    final String nodeset = element.getAttributeValue(null, NODESET_ATTR);
    if (nodeset == null) {
        throw new XFormParseException("XForm Parse: <bind> without nodeset", element);
    }
    IDataReference ref;
    try {
        ref = new XPathReference(nodeset);
    } catch (XPathException xpe) {
        throw new XFormParseException(xpe.getMessage());
    }
    ref = parserFunctions.getAbsRef(ref, formDef);
    binding.setReference(ref);
    binding.setDataType(getDataType(element.getAttributeValue(null, "type")));
    String xpathRel = element.getAttributeValue(null, "relevant");
    if (xpathRel != null) {
        if ("true()".equals(xpathRel)) {
            binding.relevantAbsolute = true;
        } else if ("false()".equals(xpathRel)) {
            binding.relevantAbsolute = false;
        } else {
            Condition c = buildCondition(xpathRel, "relevant", ref);
            c = (Condition) formDef.addTriggerable(c);
            binding.relevancyCondition = c;
        }
    }
    String xpathReq = element.getAttributeValue(null, "required");
    if (xpathReq != null) {
        if ("true()".equals(xpathReq)) {
            binding.requiredAbsolute = true;
        } else if ("false()".equals(xpathReq)) {
            binding.requiredAbsolute = false;
        } else {
            Condition c = buildCondition(xpathReq, "required", ref);
            c = (Condition) formDef.addTriggerable(c);
            binding.requiredCondition = c;
        }
    }
    String xpathRO = element.getAttributeValue(null, "readonly");
    if (xpathRO != null) {
        if ("true()".equals(xpathRO)) {
            binding.readonlyAbsolute = true;
        } else if ("false()".equals(xpathRO)) {
            binding.readonlyAbsolute = false;
        } else {
            Condition c = buildCondition(xpathRO, "readonly", ref);
            c = (Condition) formDef.addTriggerable(c);
            binding.readonlyCondition = c;
        }
    }
    final String xpathConstr = element.getAttributeValue(null, "constraint");
    if (xpathConstr != null) {
        try {
            binding.constraint = new XPathConditional(xpathConstr);
        } catch (XPathSyntaxException xse) {
            throw new XFormParseException("bind for " + nodeset + " contains invalid constraint expression [" + xpathConstr + "] " + xse.getMessage());
        }
        binding.constraintMessage = element.getAttributeValue(NAMESPACE_JAVAROSA, "constraintMsg");
    }
    final String xpathCalc = element.getAttributeValue(null, "calculate");
    if (xpathCalc != null) {
        Recalculate r;
        try {
            r = buildCalculate(xpathCalc, ref);
        } catch (XPathSyntaxException xpse) {
            throw new XFormParseException("Invalid calculate for the bind attached to \"" + nodeset + "\" : " + xpse.getMessage() + " in expression " + xpathCalc);
        }
        r = (Recalculate) formDef.addTriggerable(r);
        binding.calculate = r;
    }
    binding.setPreload(element.getAttributeValue(NAMESPACE_JAVAROSA, "preload"));
    binding.setPreloadParams(element.getAttributeValue(NAMESPACE_JAVAROSA, "preloadParams"));
    saveUnusedAttributes(binding, element, usedAttributes, passedThroughAttributes);
    return binding;
}

Example 4 with XPathException

use of org.javarosa.xpath.XPathException in project javarosa by opendatakit.

the class XPathReference method getPathExpr.

public static XPathPathExpr getPathExpr(String nodeset) {
    XPathExpression path;
    boolean validNonPathExpr = false;
    try {
        path = XPathParseTool.parseXPath(nodeset);
        if (!(path instanceof XPathPathExpr)) {
            validNonPathExpr = true;
            throw new XPathSyntaxException();
        }
    } catch (XPathSyntaxException xse) {
        // make these checked exceptions?
        if (validNonPathExpr) {
            throw new XPathTypeMismatchException("Expected XPath path, got XPath expression: [" + nodeset + "]," + xse.getMessage());
        } else {
            Std.printStack(xse);
            throw new XPathException("Parse error in XPath path: [" + nodeset + "]." + (xse.getMessage() == null ? "" : "\n" + xse.getMessage()));
        }
    }
    return (XPathPathExpr) path;
}

Example 5 with XPathException

use of org.javarosa.xpath.XPathException in project javarosa by opendatakit.

the class FormDef method populateDynamicChoices.

/**
 * Identify the itemset in the backend model, and create a set of
 * SelectChoice objects at the current question reference based on the data
 * in the model.
 * <p/>
 * Will modify the itemset binding to contain the relevant choices
 *
 * @param itemset The binding for an itemset, where the choices will be populated
 * @param curQRef A reference to the current question's element, which will be
 *                used to determine the values to be chosen from.
 */
public void populateDynamicChoices(ItemsetBinding itemset, TreeReference curQRef) {
    getEventNotifier().publishEvent(new Event("Dynamic choices", new EvaluationResult(curQRef, null)));
    List<SelectChoice> choices = new ArrayList<SelectChoice>();
    List<TreeReference> matches = itemset.nodesetExpr.evalNodeset(this.getMainInstance(), new EvaluationContext(exprEvalContext, itemset.contextRef.contextualize(curQRef)));
    DataInstance fi = null;
    if (// We're not dealing
    itemset.nodesetRef.getInstanceName() != null) // with the default
    // instance
    {
        fi = getNonMainInstance(itemset.nodesetRef.getInstanceName());
        if (fi == null) {
            throw new XPathException("Instance " + itemset.nodesetRef.getInstanceName() + " not found");
        }
    } else {
        fi = getMainInstance();
    }
    if (matches == null) {
        throw new XPathException("Could not find references depended on by" + itemset.nodesetRef.getInstanceName());
    }
    for (int i = 0; i < matches.size(); i++) {
        TreeReference item = matches.get(i);
        // String label =
        // itemset.labelExpr.evalReadable(this.getMainInstance(), new
        // EvaluationContext(exprEvalContext, item));
        String label = itemset.labelExpr.evalReadable(fi, new EvaluationContext(exprEvalContext, item));
        String value = null;
        TreeElement copyNode = null;
        if (itemset.copyMode) {
            copyNode = this.getMainInstance().resolveReference(itemset.copyRef.contextualize(item));
        }
        if (itemset.valueRef != null) {
            // value = itemset.valueExpr.evalReadable(this.getMainInstance(),
            // new EvaluationContext(exprEvalContext, item));
            value = itemset.valueExpr.evalReadable(fi, new EvaluationContext(exprEvalContext, item));
        }
        // SelectChoice choice = new
        // SelectChoice(labelID,labelInnerText,value,isLocalizable);
        SelectChoice choice = new SelectChoice(label, value != null ? value : "dynamic:" + i, itemset.labelIsItext);
        choice.setIndex(i);
        if (itemset.copyMode)
            choice.copyNode = copyNode;
        choices.add(choice);
    }
    if (choices.size() == 0) {
        // throw new
        // RuntimeException("dynamic select question has no choices! [" +
        // itemset.nodesetRef + "]");
        // When you exit a survey mid way through and want to save it, it seems
        // that Collect wants to
        // go through all the questions. Well of course not all the questions
        // are going to have answers
        // to chose from if the user hasn't filled them out. So I'm just going
        // to make a note of this
        // and not throw an exception.
        Std.out.println("Dynamic select question has no choices! [" + itemset.nodesetRef + "]. If this occurs while filling out a form (and not while saving an incomplete form), the filter condition may have eliminated all the choices. Is that what you intended?\n");
    }
    itemset.clearChoices();
    itemset.setChoices(choices, this.getLocalizer());
}