Hi,
I am trying to use Orient Transactions and I am running into issues. I
have provided a test case below. The code and example below may seem
arbitrary but it is a part of a scala DAO implementation that includes
transactions.
I am trying to:
1) start a transaction
2) create a first and second ODocument
3) store the temporary RID value of the first ODocument in a "nested" field
of the second ODocument
4) commit the transaction and have the temporary RID stored in the second
ODocument updated to the final RID value
In the example below..
there is a Person Class and an Event Class. Event Class has an "admin"
field that is collection of a wrapper class for RIDs. The example below
displays that when the RID is inside of the wrapper class it will not be
updated to reflect the commit.
import com.orientechnologies.orient.core.record.impl.ODocument;
import com.orientechnologies.orient.core.storage.OStorage;
import com.orientechnologies.orient.core.tx.OTransaction.TXTYPE;
import com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx;
import com.orientechnologies.orient.core.id.ORID;
import com.orientechnologies.orient.core.metadata.schema.OClass;
import java.util.List;
import java.util.ArrayList;
class Main{
public static void main (String [] args) {
ODatabaseDocumentTx db = new ODatabaseDocumentTx("memory:test");
db.create();
OClass person = db.getMetadata().getSchema().createClass("Person");
OClass event = db.getMetadata().getSchema().createClass("Event");
OClass eventjson =
db.getMetadata().getSchema().createClass("Event_JSON");
db.begin( TXTYPE.OPTIMISTIC );
ODocument doc = new ODocument("Person");
doc.field("name","Sunil");
doc.save();
ORID adminID = doc.getIdentity();
List<ORID> adminList = new ArrayList<ORID>();
adminList.add(adminID);
ODocument doc2 = new ODocument("Event");
doc2.field("event_name","world cup 2014").field("admin",adminList);
doc2.save();
ODocument doc3 = new ODocument("Event_JSON");
doc3.fromJSON("{\"event_name\":\"world cup
2018\",\"admin\":[{\"typehint\":\"oID\",\"id\":\""+ adminID + "\"}]}");
doc3.save();
db.commit();
for (ODocument o : db.browseClass("Event")) {
System.out.println(o.toJSON());
}
for (ODocument o : db.browseClass("Person")) {
System.out.println(o.toJSON());
}
//Output will include the temp id and not the id assigned after the
transaction is committed
for (ODocument o : db.browseClass("Event_JSON")) {
System.out.println(o.toJSON());
}
db. close ( ) ;
}
}
--
---
You received this message because you are subscribed to the Google Groups
"OrientDB" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
