Examples with UnpivotableExpressionException org.javarosa.core.model.condition.pivot.UnpivotableExpressionException used on opensource projects

Example 1 with UnpivotableExpressionException

use of org.javarosa.core.model.condition.pivot.UnpivotableExpressionException in project javarosa by opendatakit.

the class XPathExpression method pivot.

public final List<Object> pivot(DataInstance model, EvaluationContext evalContext) throws UnpivotableExpressionException {
    try {
        List<Object> pivots = new ArrayList<Object>();
        this.pivot(model, evalContext, pivots, evalContext.getContextRef());
        return pivots;
    } catch (UnpivotableExpressionException uee) {
        // Rethrow unpivotable (expected)
        throw uee;
    } catch (Exception e) {
        // Pivots aren't critical, if there was a problem getting one, log the exception
        // so we can fix it, and then just report that.
        Logger.exception(e);
        throw new UnpivotableExpressionException(e.getMessage());
    }
}

Example 2 with UnpivotableExpressionException

use of org.javarosa.core.model.condition.pivot.UnpivotableExpressionException in project javarosa by opendatakit.

the class XPathFuncExpr method pivot.

@Override
public Object pivot(DataInstance model, EvaluationContext evalContext, List<Object> pivots, Object sentinal) throws UnpivotableExpressionException {
    String name = id.toString();
    // for now we'll assume that all that functions do is return the composition of their components
    Object[] argVals = new Object[args.length];
    // Identify whether this function is an identity: IE: can reflect back the pivot sentinal with no modification
    String[] identities = new String[] { "string-length" };
    boolean id = false;
    for (String identity : identities) {
        if (identity.equals(name)) {
            id = true;
        }
    }
    // get each argument's pivot
    for (int i = 0; i < args.length; i++) {
        argVals[i] = args[i].pivot(model, evalContext, pivots, sentinal);
    }
    boolean pivoted = false;
    // evaluate the pivots
    for (Object argVal : argVals) {
        if (argVal == null) {
            // one of our arguments contained pivots,
            pivoted = true;
        } else if (sentinal.equals(argVal)) {
            // one of our arguments is the sentinal, return the sentinal if possible
            if (id) {
                return sentinal;
            } else {
                // the pivot.
                throw new UnpivotableExpressionException();
            }
        }
    }
    if (pivoted) {
        if (id) {
            return null;
        } else {
            // the pivot.
            throw new UnpivotableExpressionException();
        }
    }
    // TODO: Inner eval here with eval'd args to improve speed
    return eval(model, evalContext);
}