Examples with Relationship org.apache.cayenne.map.Relationship used on opensource projects

Example 11 with Relationship

use of org.apache.cayenne.map.Relationship in project cayenne by apache.

the class PrefetchModel method isToMany.

private boolean isToMany(String prefetch) {
    // totally invalid path would result in ExpressionException
    try {
        Expression exp = ExpressionFactory.exp(prefetch);
        Object object = exp.evaluate(root);
        return object instanceof Relationship && ((Relationship) object).isToMany();
    } catch (ExpressionException e) {
        return false;
    }
}

Example 12 with Relationship

use of org.apache.cayenne.map.Relationship in project cayenne by apache.

the class ObjRelationshipInfo method connectEnds.

// Connects last selected DbRelationship in the path to the
// last DbEntity, creating a dummy relationship if needed.
private void connectEnds() {
    Relationship last = null;
    int size = dbRelationships.size();
    if (size > 0) {
        last = dbRelationships.get(size - 1);
    }
    Entity target = getEndEntity();
    if (target != null && (last == null || last.getTargetEntity() != target)) {
        // try to connect automatically, if we can't use dummy connector
        Entity source = (last == null) ? getStartEntity() : last.getTargetEntity();
        if (source != null) {
            Relationship anyConnector = source != null ? source.getAnyRelationship(target) : null;
            if (anyConnector != null) {
                dbRelationships.add((DbRelationship) anyConnector);
            }
        }
    }
}

Example 13 with Relationship

use of org.apache.cayenne.map.Relationship in project cayenne by apache.

the class EntityTreeModel method sortedChildren.

private ConfigurationNode[] sortedChildren(Object node) {
    Entity entity = entityForNonLeafNode(node);
    // may happen in incomplete relationships
    if (entity == null) {
        return new ConfigurationNode[0];
    }
    ConfigurationNode[] sortedForNode = sortedChildren.get(node);
    if (sortedForNode == null) {
        Collection<? extends Attribute> attributes = entity.getAttributes();
        Collection<? extends Relationship> relationships = entity.getRelationships();
        List<ConfigurationNode> nodes = new ArrayList<>();
        // combine two collections in an array
        for (Attribute attr : attributes) {
            if (filter == null || filter.attributeMatch(node, attr)) {
                nodes.add((ConfigurationNode) attr);
            }
        }
        for (Relationship rel : relationships) {
            if (filter == null || filter.relationshipMatch(node, rel)) {
                nodes.add((ConfigurationNode) rel);
            }
        }
        sortedForNode = nodes.toArray(new ConfigurationNode[0]);
        Arrays.sort(sortedForNode, Comparators.getEntityChildrenComparator());
        sortedChildren.put(node, sortedForNode);
    }
    return sortedForNode;
}

Example 14 with Relationship

use of org.apache.cayenne.map.Relationship in project cayenne by apache.

the class RelationshipDisplayEventType method getLastEntityRelationships.

private Relationship[] getLastEntityRelationships(Entity entity) {
    List<Relationship> relationshipList = new ArrayList<>();
    String rels = (entity instanceof ObjEntity) ? preferences.getObjRels() : preferences.getDbRels();
    for (String objRelName : rels.split(",")) {
        Relationship rel = entity.getRelationship(objRelName);
        if (rel != null) {
            relationshipList.add(rel);
        }
    }
    return relationshipList.toArray(new Relationship[0]);
}

Example 15 with Relationship

use of org.apache.cayenne.map.Relationship in project cayenne by apache.

the class RelationshipDisplayEventType method fireLastDisplayEvent.

@Override
public void fireLastDisplayEvent() {
    DataChannelDescriptor dataChannel = (DataChannelDescriptor) controller.getProject().getRootNode();
    if (!dataChannel.getName().equals(preferences.getDomain())) {
        return;
    }
    DataNodeDescriptor dataNode = dataChannel.getNodeDescriptor(preferences.getNode());
    DataMap dataMap = dataChannel.getDataMap(preferences.getDataMap());
    if (dataMap == null) {
        return;
    }
    Entity entity = getLastEntity(dataMap);
    if (entity == null) {
        return;
    }
    Relationship[] relationships = getLastEntityRelationships(entity);
    EntityDisplayEvent entityDisplayEvent = new EntityDisplayEvent(this, entity, dataMap, dataNode, dataChannel);
    RelationshipDisplayEvent displayEvent = new RelationshipDisplayEvent(this, relationships, entity, dataMap, dataChannel);
    if (entity instanceof ObjEntity) {
        controller.fireObjEntityDisplayEvent(entityDisplayEvent);
        controller.fireObjRelationshipDisplayEvent(displayEvent);
    } else if (entity instanceof DbEntity) {
        controller.fireDbEntityDisplayEvent(entityDisplayEvent);
        controller.fireDbRelationshipDisplayEvent(displayEvent);
    }
}