/**
* Fetch relationships for the given source node.
*
* @param sourceNode
* @param relType can be null
* @param dir
* @return a list of relationships
* @throws FrameworkException
*/
public List<AbstractRelationship> execute(
AbstractNode sourceNode, RelationshipType relType, Direction dir) throws FrameworkException {
RelationshipFactory factory = new RelationshipFactory(securityContext);
List<AbstractRelationship> result = new LinkedList<AbstractRelationship>();
Node node = sourceNode.getNode();
Iterable<Relationship> rels;
if (node == null) {
return Collections.EMPTY_LIST;
}
if (relType != null) {
rels = node.getRelationships(relType, dir);
} else {
rels = node.getRelationships(dir);
}
try {
for (Relationship r : rels) {
result.add(factory.instantiate(r));
}
} catch (RuntimeException e) {
logger.log(Level.WARNING, "Exception occured: ", e.getMessage());
/**
* ********* FIXME
*
* <p>Here an exception occurs:
*
* <p>org.neo4j.kernel.impl.nioneo.store.InvalidRecordException: Node[5] is neither
* firstNode[37781] nor secondNode[37782] for Relationship[188125] at
* org.neo4j.kernel.impl.nioneo.xa.ReadTransaction.getMoreRelationships(ReadTransaction.java:131)
* at
* org.neo4j.kernel.impl.nioneo.xa.NioNeoDbPersistenceSource$ReadOnlyResourceConnection.getMoreRelationships(NioNeoDbPersistenceSource.java:280)
* at
* org.neo4j.kernel.impl.persistence.PersistenceManager.getMoreRelationships(PersistenceManager.java:100)
* at org.neo4j.kernel.impl.core.NodeManager.getMoreRelationships(NodeManager.java:585) at
* org.neo4j.kernel.impl.core.NodeImpl.getMoreRelationships(NodeImpl.java:358) at
* org.neo4j.kernel.impl.core.IntArrayIterator.hasNext(IntArrayIterator.java:115)
*/
}
return result;
}
@Override
public void execute(Map<String, Object> attributes) throws FrameworkException {
final String entityType = (String) attributes.get("type");
final String relType = (String) attributes.get("relType");
final GraphDatabaseService graphDb = (GraphDatabaseService) arguments.get("graphDb");
final SecurityContext superUserContext = SecurityContext.getSuperUserInstance();
final NodeFactory nodeFactory = new NodeFactory(superUserContext);
final RelationshipFactory relFactory = new RelationshipFactory(superUserContext);
if (entityType != null) {
final Class type = EntityContext.getEntityClassForRawType(entityType);
if (type != null) {
// final Result<AbstractNode> result = Services.command(securityContext,
// SearchNodeCommand.class).execute(true, false, Search.andExactType(type.getSimpleName()));
final Result<AbstractNode> result =
nodeFactory.instantiateAll(GlobalGraphOperations.at(graphDb).getAllNodes());
final List<AbstractNode> nodes = new ArrayList<AbstractNode>();
for (AbstractNode node : result.getResults()) {
if (node.getClass().equals(type)) {
nodes.add(node);
}
}
logger.log(
Level.INFO,
"Start (re-)indexing all nodes of type {0}",
new Object[] {type.getSimpleName()});
long count =
bulkGraphOperation(
securityContext,
nodes,
1000,
"RebuildIndex",
new BulkGraphOperation<AbstractNode>() {
@Override
public void handleGraphObject(
SecurityContext securityContext, AbstractNode node) {
node.updateInIndex();
}
@Override
public void handleThrowable(
SecurityContext securityContext, Throwable t, AbstractNode node) {
logger.log(
Level.WARNING,
"Unable to index node {0}: {1}",
new Object[] {node, t.getMessage()});
}
@Override
public void handleTransactionFailure(
SecurityContext securityContext, Throwable t) {
logger.log(Level.WARNING, "Unable to index node: {0}", t.getMessage());
}
});
logger.log(Level.INFO, "Done with (re-)indexing {0} nodes", count);
return;
}
} else if (relType != null) {
// final Result<AbstractNode> result = Services.command(securityContext,
// SearchNodeCommand.class).execute(true, false, Search.andExactType(type.getSimpleName()));
final List<AbstractRelationship> unfilteredRels =
relFactory.instantiate(GlobalGraphOperations.at(graphDb).getAllRelationships());
final List<AbstractRelationship> rels = new ArrayList<AbstractRelationship>();
for (AbstractRelationship rel : unfilteredRels) {
if (!rel.getType().equals(relType)) {
rels.add(rel);
}
}
logger.log(Level.INFO, "Start setting UUID on all rels of type {0}", new Object[] {relType});
long count =
bulkGraphOperation(
securityContext,
rels,
1000,
"SetRelationshipUuid",
new BulkGraphOperation<AbstractRelationship>() {
@Override
public void handleGraphObject(
SecurityContext securityContext, AbstractRelationship rel) {
rel.updateInIndex();
}
@Override
public void handleThrowable(
SecurityContext securityContext, Throwable t, AbstractRelationship rel) {
logger.log(
Level.WARNING,
"Unable to index relationship {0}: {1}",
new Object[] {rel, t.getMessage()});
}
@Override
public void handleTransactionFailure(SecurityContext securityContext, Throwable t) {
logger.log(Level.WARNING, "Unable to index relationship: {0}", t.getMessage());
}
});
logger.log(Level.INFO, "Done with (re-)indexing {0} relationships", count);
return;
}
logger.log(Level.INFO, "Unable to determine entity type to re-index.");
}
private synchronized <
A extends NodeInterface, B extends NodeInterface, R extends Relation<A, B, ?, ?>>
R createRelationship(
final A fromNode, final B toNode, final Class<R> relType, final PropertyMap properties)
throws FrameworkException {
final RelationshipFactory<R> factory = new RelationshipFactory(securityContext);
final R template = instantiate(relType);
final Node startNode = fromNode.getNode();
final Node endNode = toNode.getNode();
final Relationship rel = startNode.createRelationshipTo(endNode, template);
final R newRel = factory.instantiate(rel);
final Date now = new Date();
// logger.log(Level.INFO, "CREATING relationship {0}-[{1}]->{2}", new Object[] {
// fromNode.getType(), newRel.getRelType(), toNode.getType() } );
if (newRel != null) {
newRel.unlockReadOnlyPropertiesOnce();
newRel.setProperty(GraphObject.type, relType.getSimpleName());
// set UUID
newRel.unlockReadOnlyPropertiesOnce();
newRel.setProperty(GraphObject.id, getNextUuid());
// set created date
newRel.unlockReadOnlyPropertiesOnce();
newRel.setProperty(AbstractRelationship.createdDate, now);
// set last modified date
newRel.unlockReadOnlyPropertiesOnce();
newRel.setProperty(AbstractRelationship.lastModifiedDate, now);
// Try to get the cascading delete flag from the domain specific relationship type
newRel.unlockReadOnlyPropertiesOnce();
newRel.setProperty(
AbstractRelationship.cascadeDelete, factory.instantiate(rel).getCascadingDeleteFlag());
// notify transaction handler
TransactionCommand.relationshipCreated(newRel);
if (properties != null) {
for (Entry<PropertyKey, Object> entry : properties.entrySet()) {
PropertyKey key = entry.getKey();
// on creation, writing of read-only properties should be possible
if (key.isReadOnly() || key.isWriteOnce()) {
newRel.unlockReadOnlyPropertiesOnce();
}
newRel.setProperty(entry.getKey(), entry.getValue());
}
}
// notify relationship of its creation
newRel.onRelationshipCreation();
// iterate post creation transformations
for (Transformation<GraphObject> transformation :
StructrApp.getConfiguration().getEntityCreationTransformations(newRel.getClass())) {
transformation.apply(securityContext, newRel);
}
}
return newRel;
}