@Override
public Map<String, Object> getNodeProperties(long nodeId) {
NodeRecord record = getNodeRecord(nodeId);
if (record.getNextProp() != Record.NO_NEXT_PROPERTY.intValue()) {
return getPropertyChain(record.getNextProp());
}
return Collections.emptyMap();
}
@Override
public void setNodeProperties(long node, Map<String, Object> properties) {
NodeRecord record = getNodeRecord(node);
if (record.getNextProp() != Record.NO_NEXT_PROPERTY.intValue()) {
deletePropertyChain(record.getNextProp());
/*
* Batch inserter does not make any attempt to maintain the store's
* integrity. It makes sense however to keep some things intact where
* the cost is relatively low. So here, when we delete the property
* chain we first make sure that the node record (or the relationship
* record below) does not point anymore to the deleted properties. This
* way, if during creation, something goes wrong, it will not have the properties
* expected instead of throwing invalid record exceptions.
*/
record.setNextProp(Record.NO_NEXT_PROPERTY.intValue());
getNodeStore().updateRecord(record);
}
record.setNextProp(createPropertyChain(properties));
getNodeStore().updateRecord(record);
}
@Override
public void setNodeProperties(long node, Map<String, Object> properties) {
NodeRecord record = getNodeRecord(node).forChangingData();
if (record.getNextProp() != Record.NO_NEXT_PROPERTY.intValue()) {
propertyDeletor.getAndDeletePropertyChain(record, recordAccess.getPropertyRecords());
}
record.setNextProp(
propertyCreator.createPropertyChain(
record, propertiesIterator(properties), recordAccess.getPropertyRecords()));
recordAccess.commit();
}
private void migrateNodes(NodeStore nodeStore, PropertyWriter propertyWriter)
throws IOException {
Iterable<NodeRecord> records = legacyStore.getNodeStoreReader().readNodeStore();
// estimate total number of nodes using file size then calc number of dots or percentage
// complete
for (NodeRecord nodeRecord : records) {
reportProgress(nodeRecord.getId());
nodeStore.setHighId(nodeRecord.getId() + 1);
if (nodeRecord.inUse()) {
long startOfPropertyChain = nodeRecord.getNextProp();
if (startOfPropertyChain != Record.NO_NEXT_RELATIONSHIP.intValue()) {
long propertyRecordId = migrateProperties(startOfPropertyChain, propertyWriter);
nodeRecord.setNextProp(propertyRecordId);
}
nodeStore.updateRecord(nodeRecord);
} else {
nodeStore.freeId(nodeRecord.getId());
}
}
legacyStore.getNodeStoreReader().close();
}
public void updateFirstRelationships() {
for (RecordProxy<Long, NodeRecord, Void> change : recordChangeSet.getNodeRecords().changes()) {
NodeRecord record = change.forReadingLinkage();
txState.setFirstIds(record.getId(), record.getNextRel(), record.getNextProp());
}
}