@Override
public boolean visitRelationshipCommand(Command.RelationshipCommand command)
throws IOException {
long id = channel.getLong();
byte inUseFlag = channel.get();
boolean inUse = false;
if ((inUseFlag & Record.IN_USE.byteValue()) == Record.IN_USE.byteValue()) {
inUse = true;
} else if ((inUseFlag & Record.IN_USE.byteValue()) != Record.NOT_IN_USE.byteValue()) {
throw new IOException("Illegal in use flag: " + inUseFlag);
}
RelationshipRecord record;
if (inUse) {
record = new RelationshipRecord(id, channel.getLong(), channel.getLong(), channel.getInt());
record.setInUse(inUse);
record.setFirstPrevRel(channel.getLong());
record.setFirstNextRel(channel.getLong());
record.setSecondPrevRel(channel.getLong());
record.setSecondNextRel(channel.getLong());
record.setNextProp(channel.getLong());
/*
* Logs for version 2.0 do not contain the proper values for the following two flags. Also,
* the defaults won't do, because the pointers for prev in the fist record will not be interpreted
* properly. So we need to set the flags explicitly here.
*
* Note that this leaves the prev field for the first record in the chain having a value of -1,
* which is not correct, as it should contain the relationship count instead. However, we cannot
* determine this value from the contents of the log alone.
*/
record.setFirstInFirstChain(
record.getFirstPrevRel() == Record.NO_PREV_RELATIONSHIP.intValue());
record.setFirstInSecondChain(
record.getSecondPrevRel() == Record.NO_PREV_RELATIONSHIP.intValue());
} else {
record = new RelationshipRecord(id, -1, -1, -1);
record.setInUse(false);
}
command.init(record);
return false;
}
