private void writePropertyRecord(PropertyRecord record) throws IOException {
byte inUse = record.inUse() ? Record.IN_USE.byteValue() : Record.NOT_IN_USE.byteValue();
if (record.getRelId() != -1) {
// Here we add 2, i.e. set the second lsb.
inUse += Record.REL_PROPERTY.byteValue();
}
channel.put(inUse); // 1
channel.putLong(record.getNextProp()).putLong(record.getPrevProp()); // 8 + 8
long nodeId = record.getNodeId();
long relId = record.getRelId();
if (nodeId != -1) {
channel.putLong(nodeId); // 8 or
} else if (relId != -1) {
channel.putLong(relId); // 8 or
} else {
// means this records value has not changed, only place in
// prop chain
channel.putLong(-1); // 8
}
channel.put((byte) record.numberOfProperties()); // 1
for (PropertyBlock block : record) {
assert block.getSize() > 0 : record + " seems kinda broken";
writePropertyBlock(block);
}
writeDynamicRecords(record.getDeletedRecords());
}
@Test
public void shouldReadNodeRecords() throws IOException {
File storeDir = dir.graphDbDir();
find19FormatHugeStoreDirectory(storeDir);
Legacy19PropertyStoreReader propStoreReader =
new Legacy19PropertyStoreReader(fs, new File(storeDir, "neostore.propertystore.db"));
int propCount = 0;
Iterator<PropertyRecord> iterator = propStoreReader.readPropertyStore();
while (iterator.hasNext()) {
PropertyRecord record = iterator.next();
if (record.inUse()) {
propCount++;
}
}
assertEquals(6000, propCount);
propStoreReader.close();
}
private PropertyRecord readPropertyRecord(long id) throws IOException {
// in_use(byte)+type(int)+key_indexId(int)+prop_blockId(long)+
// prev_prop_id(long)+next_prop_id(long)
PropertyRecord record = new PropertyRecord(id);
byte inUseFlag = channel.get(); // 1
long nextProp = channel.getLong(); // 8
long prevProp = channel.getLong(); // 8
record.setNextProp(nextProp);
record.setPrevProp(prevProp);
boolean inUse = false;
if ((inUseFlag & Record.IN_USE.byteValue()) == Record.IN_USE.byteValue()) {
inUse = true;
}
boolean nodeProperty = true;
if ((inUseFlag & Record.REL_PROPERTY.byteValue()) == Record.REL_PROPERTY.byteValue()) {
nodeProperty = false;
}
long primitiveId = channel.getLong(); // 8
if (primitiveId != -1 && nodeProperty) {
record.setNodeId(primitiveId);
} else if (primitiveId != -1) {
record.setRelId(primitiveId);
}
int nrPropBlocks = channel.get();
assert nrPropBlocks >= 0;
if (nrPropBlocks > 0) {
record.setInUse(true);
}
while (nrPropBlocks-- > 0) {
PropertyBlock block = readPropertyBlock();
if (block == null) {
return null;
}
record.addPropertyBlock(block);
}
if (readDynamicRecords(record, PROPERTY_DELETED_DYNAMIC_RECORD_ADDER) == -1) {
return null;
}
if ((inUse && !record.inUse()) || (!inUse && record.inUse())) {
throw new IllegalStateException(
"Weird, inUse was read in as " + inUse + " but the record is " + record);
}
return record;
}