Examples with DataFlowException edu.uci.ics.textdb.api.exception.DataFlowException used on opensource projects

Example 31 with DataFlowException

use of edu.uci.ics.textdb.api.exception.DataFlowException in project textdb by TextDB.

the class ScanBasedSourceOperator method open.

@Override
public void open() throws TextDBException {
    if (isOpen) {
        return;
    }
    try {
        dataReader.open();
        isOpen = true;
    } catch (Exception e) {
        throw new DataFlowException(e.getMessage(), e);
    }
}

Example 32 with DataFlowException

use of edu.uci.ics.textdb.api.exception.DataFlowException in project textdb by TextDB.

the class AbstractSingleInputOperator method getNextTuple.

@Override
public Tuple getNextTuple() throws TextDBException {
    if (cursor == CLOSED) {
        throw new DataFlowException(ErrorMessages.OPERATOR_NOT_OPENED);
    }
    if (resultCursor >= limit + offset - 1) {
        return null;
    }
    try {
        Tuple resultTuple = null;
        while (true) {
            resultTuple = computeNextMatchingTuple();
            if (resultTuple == null) {
                break;
            }
            resultCursor++;
            if (resultCursor >= offset) {
                break;
            }
        }
        return resultTuple;
    } catch (Exception e) {
        throw new DataFlowException(e.getMessage(), e);
    }
}

Example 33 with DataFlowException

use of edu.uci.ics.textdb.api.exception.DataFlowException in project textdb by TextDB.

the class ComparableMatcher method compareDouble.

private boolean compareDouble(Tuple inputTuple) {
    Object compareToObject = predicate.getCompareToValue();
    Class<?> compareToType = compareToObject.getClass();
    Double value = inputTuple.getField(predicate.getAttributeName(), DoubleField.class).getValue();
    if (compareToType.equals(Integer.class)) {
        return compareValues(value, (double) (int) compareToObject, predicate.getComparisonType());
    } else if (compareToType.equals(Double.class)) {
        return compareValues(value, (double) compareToObject, predicate.getComparisonType());
    } else if (compareToType.equals(String.class)) {
        try {
            Double compareToValue = Double.parseDouble((String) predicate.getCompareToValue());
            return compareValues(value, compareToValue, predicate.getComparisonType());
        } catch (NumberFormatException e) {
            throw new DataFlowException("Unable to parse to number " + e.getMessage());
        }
    } else {
        throw new DataFlowException("Value " + predicate.getCompareToValue() + " is not a valid number type");
    }
}

Example 34 with DataFlowException

use of edu.uci.ics.textdb.api.exception.DataFlowException in project textdb by TextDB.

the class ComparableMatcher method compareDate.

private boolean compareDate(Tuple inputTuple) throws DataFlowException {
    if (predicate.getCompareToValue().getClass().equals(String.class)) {
        try {
            String compareTo = (String) predicate.getCompareToValue();
            Date compareToDate = DateFormat.getDateInstance(DateFormat.MEDIUM).parse(compareTo);
            Date date = inputTuple.getField(predicate.getAttributeName(), DateField.class).getValue();
            return compareValues(date, compareToDate, predicate.getComparisonType());
        } catch (java.text.ParseException e) {
            throw new DataFlowException("Unable to parse date: " + e.getMessage());
        }
    } else {
        throw new DataFlowException("Value " + predicate.getCompareToValue() + " is not a string");
    }
}