void initializeFilterFields() {
/* Create new filters only if Filterable */
if (owner.getFilterable() != null) {
for (Object property : owner.getVisibleColumns()) {
if (owner.getContainerPropertyIds().contains(property)) {
AbstractField filter =
createField(property, owner.getContainerDataSource().getType(property));
addFilterColumn(property, filter);
} else {
addFilterColumn(property, createField(null, null));
}
}
}
}
private Filter generateFilter(Property field, Object propertyId, Object value) {
if (field instanceof DateFilterPopup) {
/* Handle date filtering */
DateInterval interval = ((DateFilterPopup) field).getDateValue();
if (interval == null) {
/* Date interval is empty -> no filter */
return null;
}
if (owner.getFilterGenerator() != null) {
Filter newFilter = owner.getFilterGenerator().generateFilter(propertyId, interval);
if (newFilter != null) {
return newFilter;
}
}
Date from = interval.getFrom();
Date to = interval.getTo();
if (from != null && to != null) {
return new Between(propertyId, from, to);
} else if (from != null) {
return new Compare.GreaterOrEqual(propertyId, from);
} else {
return new Compare.LessOrEqual(propertyId, to);
}
} else if (field instanceof NumberFilterPopup) {
/* Handle number filtering */
NumberInterval interval = ((NumberFilterPopup) field).getInterval();
if (interval == null) {
/* Number interval is empty -> no filter */
return null;
}
if (owner.getFilterGenerator() != null) {
Filter newFilter = owner.getFilterGenerator().generateFilter(propertyId, interval);
if (newFilter != null) {
return newFilter;
}
}
String ltValue = interval.getLessThanValue();
String gtValue = interval.getGreaterThanValue();
String eqValue = interval.getEqualsValue();
Class<?> clazz = owner.getContainerDataSource().getType(propertyId);
Method valueOf;
// We use reflection to get the vaueOf method of the container
// datatype
try {
valueOf = clazz.getMethod("valueOf", String.class);
if (eqValue != null) {
return new Compare.Equal(propertyId, valueOf.invoke(clazz, eqValue));
} else if (ltValue != null && gtValue != null) {
return new And(
new Compare.Less(propertyId, valueOf.invoke(clazz, ltValue)),
new Compare.Greater(propertyId, valueOf.invoke(clazz, gtValue)));
} else if (ltValue != null) {
return new Compare.Less(propertyId, valueOf.invoke(clazz, ltValue));
} else if (gtValue != null) {
return new Compare.Greater(propertyId, valueOf.invoke(clazz, gtValue));
} else {
return null;
}
} catch (Exception e) {
throw new RuntimeException("Creating number filter has failed.", e);
}
} else if (value != null && !value.equals("")) {
/* Handle filtering for other data */
if (owner.getFilterGenerator() != null) {
Filter newFilter = owner.getFilterGenerator().generateFilter(propertyId, value);
if (newFilter != null) {
return newFilter;
}
}
return new SimpleStringFilter(propertyId, String.valueOf(value), true, false);
}
/* Value is null or empty -> no filter */
return null;
}
