bundles/org.simantics.db.common/src/org/simantics/db/common/CommitMetadata.java

   1 package org.simantics.db.common;
   2
   3 import java.io.ByteArrayInputStream;
   4 import java.io.ByteArrayOutputStream;
   5 import java.io.ObjectInputStream;
   6 import java.io.ObjectOutputStream;
   7 import java.util.Date;
   8
   9 import org.simantics.db.Metadata;
  10 import org.simantics.db.Session;
  11 import org.simantics.db.common.utils.Logger;
  12
  13 public class CommitMetadata implements Metadata {
  14     final boolean DEBUG = true;
  15     public final long opid;
  16     public final Date date;
  17     public CommitMetadata(long opid) {
  18         this.opid = opid;
  19         this.date = new Date();
  20     }
  21     public CommitMetadata(long opid, Date date) {
  22         this.opid = opid;
  23         this.date = date;
  24     }
  25     @Override
  26     public byte[] serialise(Session session) {
  27         try {
  28             ByteArrayOutputStream os = new ByteArrayOutputStream();
  29             ObjectOutputStream oos = new ObjectOutputStream(os);
  30             oos.writeLong(opid);
  31             oos.writeObject(date);
  32             oos.close();
  33             return os.toByteArray();
  34         } catch (Exception e) {
  35             Logger.defaultLogError(e.toString());
  36             if (DEBUG)
  37                 e.printStackTrace();
  38         }
  39         return new byte[0];
  40     }
  41     public static CommitMetadata deserialise(Session session, byte[] input) {
  42         try {
  43             ByteArrayInputStream is = new ByteArrayInputStream(input);
  44             ObjectInputStream ois = new ObjectInputStream(is);
  45             long opid = ois.readLong();
  46             Object date = ois.readObject();
  47             ois.close();
  48             if (date instanceof Date)
  49                 return new CommitMetadata(opid, (Date)date);
  50         } catch (Throwable e) {
  51             Logger.defaultLogError(e);
  52         }
  53         return null;
  54     }
  55 }