Method validate

src/query/pojo/Query.java:103–173

Validates the query @throws IllegalArgumentException if one or more parameters were invalid

()

   * @throws IllegalArgumentException if one or more parameters were invalid
   */
  public void validate() {
    if (time == null) {
      throw new IllegalArgumentException("missing time");
    }

    validatePOJO(time, "time");

    if (metrics == null || metrics.isEmpty()) {
      throw new IllegalArgumentException("missing or empty metrics");
    }

    final Set<String> variable_ids = new HashSet<String>();
    for (Metric metric : metrics) {
      if (variable_ids.contains(metric.getId())) {
        throw new IllegalArgumentException("duplicated metric id: "
            + metric.getId());
      }
      variable_ids.add(metric.getId());
    }

    final Set<String> filter_ids = new HashSet<String>();

    if (filters != null) {
      for (Filter filter : filters) {
        if (filter_ids.contains(filter.getId())) {
          throw new IllegalArgumentException("duplicated filter id: "
                  + filter.getId());
        }
        filter_ids.add(filter.getId());
      }
    }

    if (expressions != null) {
      for (Expression expression : expressions) {
        if (variable_ids.contains(expression.getId())) {
          throw new IllegalArgumentException("Duplicated variable or expression id: "
                  + expression.getId());
        }
        variable_ids.add(expression.getId());
      }
    }

    validateCollection(metrics, "metric");

    if (filters != null) {
      validateCollection(filters, "filter");
    }

    if (expressions != null) {
      validateCollection(expressions, "expression");
    }

    validateFilters();
    
    if (expressions != null) {
      validateCollection(expressions, "expression");
      for (final Expression exp : expressions) {
        if (exp.getVariables() == null) {