Package com.google.appengine.api.datastore

Examples of com.google.appengine.api.datastore.Transaction.rollback()

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        }
        catch( RuntimeException e )
        {
            if( transaction.isActive() )
            {
                transaction.rollback();
            }
            if( e instanceof EntityStoreException )
            {
                throw (EntityStoreException) e;
            }
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      entity.setProperty(DEVICE_REG_ID_PROPERTY, regId);
      datastore.put(entity);
      txn.commit();
    } finally {
      if (txn.isActive()) {
        txn.rollback();
      }
    }
  }

  /**
 
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        datastore.delete(key);
      }
      txn.commit();
    } finally {
      if (txn.isActive()) {
        txn.rollback();
      }
    }
  }

  /**
 
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      entity.setProperty(DEVICE_REG_ID_PROPERTY, newId);
      datastore.put(entity);
      txn.commit();
    } finally {
      if (txn.isActive()) {
        txn.rollback();
      }
    }
  }

  /**
 
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        devices.add(device);
      }
      txn.commit();
    } finally {
      if (txn.isActive()) {
        txn.rollback();
      }
    }
    return devices;
  }
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      logger.fine("Total number of devices: " + total);
      txn.commit();
      return total;
    } finally {
      if (txn.isActive()) {
        txn.rollback();
      }
    }
  }

  private static Entity findDeviceByRegId(String regId) {
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      encodedKey = KeyFactory.keyToString(key);
      logger.fine("multicast key: " + encodedKey);
      txn.commit();
    } finally {
      if (txn.isActive()) {
        txn.rollback();
      }
    }
    return encodedKey;
  }
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    } catch (EntityNotFoundException e) {
      logger.severe("No entity for key " + key);
      return Collections.emptyList();
    } finally {
      if (txn.isActive()) {
        txn.rollback();
      }
    }
  }

  /**
 
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      entity.setProperty(MULTICAST_REG_IDS_PROPERTY, devices);
      datastore.put(entity);
      txn.commit();
    } finally {
      if (txn.isActive()) {
        txn.rollback();
      }
    }
  }

  /**
 
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      Key key = KeyFactory.stringToKey(encodedKey);
      datastore.delete(key);
      txn.commit();
    } finally {
      if (txn.isActive()) {
        txn.rollback();
      }
    }
  }

  public static void deleteAllEntities(String type) {
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