src/main/java/org/efaps/ui/wicket/models/objects/UIClassification.java
public Map<UUID, String> getClassInstanceKeys(final Instance _instance)
        throws EFapsException
    {
        final Map<UUID, String> ret = new HashMap<UUID, String>();
        UIClassification clazz = this;
        while (!clazz.isRoot()) {
            clazz = clazz.getParent();
        }
        Type reltype = null;
        for (final UIClassification child : clazz.getChildren()) {
            final Classification classType = (Classification) Type.get(child.getClassificationUUID());
            if (!classType.getClassifyRelationType().equals(reltype)) {
                final QueryBuilder queryBldr = new QueryBuilder(classType.getClassifyRelationType());
                queryBldr.addWhereAttrEqValue(classType.getRelLinkAttributeName(), _instance.getId());
                final MultiPrintQuery multi = queryBldr.getPrint();
                multi.addAttribute(classType.getRelTypeAttributeName());
                multi.execute();
                while (multi.next()) {
                    final Long typeid = multi.<Long>getAttribute(classType.getRelTypeAttributeName());
                    final Classification subClassType = (Classification) Type.get(typeid);
                    final QueryBuilder subQueryBldr = new QueryBuilder(subClassType);
                    subQueryBldr.addWhereAttrEqValue(subClassType.getLinkAttributeName(), _instance.getId());
                    subQueryBldr.addOrderByAttributeAsc("ID");
                    final InstanceQuery query = subQueryBldr.getQuery();
                    query.execute();
                    if (query.next()) {
                        // TODO must return an instanceKey!!! not necessary the
                        // oid
                        final String instanceKey = query.getCurrentValue().getOid();
                        ret.put(query.getCurrentValue().getType().getUUID(), instanceKey);
                        this.selectedUUID.add(query.getCurrentValue().getType().getUUID());
                    }
                }
            }
            reltype = classType.getClassifyRelationType();
        }
        return ret;
    }
public Map<UUID, String> getClassInstanceKeys(final Instance _instance)
        throws EFapsException
    {
        final Map<UUID, String> ret = new HashMap<UUID, String>();
        UIClassification clazz = this;
        while (!clazz.isRoot()) {
            clazz = clazz.getParent();
        }
        Type reltype = null;
        for (final UIClassification child : clazz.getChildren()) {
            final Classification classType = (Classification) Type.get(child.getClassificationUUID());
            if (!classType.getClassifyRelationType().equals(reltype)) {
                final QueryBuilder queryBldr = new QueryBuilder(classType.getClassifyRelationType());
                queryBldr.addWhereAttrEqValue(classType.getRelLinkAttributeName(), _instance.getId());
                final MultiPrintQuery multi = queryBldr.getPrint();
                multi.addAttribute(classType.getRelTypeAttributeName());
                multi.execute();
                while (multi.next()) {
                    final Long typeid = multi.<Long>getAttribute(classType.getRelTypeAttributeName());
                    final Classification subClassType = (Classification) Type.get(typeid);
                    final QueryBuilder subQueryBldr = new QueryBuilder(subClassType);
                    subQueryBldr.addWhereAttrEqValue(subClassType.getLinkAttributeName(), _instance.getId());
                    subQueryBldr.addOrderByAttributeAsc("ID");
                    final InstanceQuery query = subQueryBldr.getQuery();
                    query.execute();
                    if (query.next()) {
                        // TODO must return an instanceKey!!! not necessary the
                        // oid
                        final String instanceKey = query.getCurrentValue().getOid();
                        ret.put(query.getCurrentValue().getType().getUUID(), instanceKey);
                        this.selectedUUID.add(query.getCurrentValue().getType().getUUID());
                    }
                }
            }
            reltype = classType.getClassifyRelationType();
        }
        return ret;
    }
Method to get the key to the instances related to this classification.

@param _instance Instance the related instance key are searched for
@return Map of instance keys
@throws EFapsException on error