private Double getDoubleValue(PropertyHelper property) { Double val = null; // try to read the double value of the entity if (property != null && property.getRange() != null) { Object v = property.getValue(); if (v instanceof Double) { val = (Double) v; } else if (v instanceof Float) { val = (double) (Float) v; } else if (v instanceof Long) { val = (double) (Long) v; } else if (v instanceof Integer) { val = (double) (Integer) v; } } return val; }