Examples of javax.jdo.PersistenceManager.retrieve()

javax.jdo.PersistenceManager.retrieve()
Retrieve field values of an instance from the store. This tells the PersistenceManager that the application intends to use the instance, and its field values must be retrieved.
The PersistenceManager might use policy information about the class to retrieve associated instances. @param pc the instance

    query.declareParameters("Long fId, Integer sNo");
    List<GAEFileContent> gaeContents = (List<GAEFileContent>) query.execute(fileId, segmentNo);
    GAEFileContent gaeContent = null;
    if (gaeContents.size() > 0) {
      gaeContent = gaeContents.get(0);
      pm.retrieve(gaeContent);
    }
    pm.close();
    return gaeContent;
  }

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      query.setUnique(true);
      MSentryRole sentryRole = (MSentryRole) query.execute(roleName);
      if (sentryRole == null) {
        throw new SentryNoSuchObjectException("Role " + roleName);
      } else {
        pm.retrieve(sentryRole);
        sentryRole.removePrivileges();


        pm.deletePersistent(sentryRole);
      }
      CommitContext commit = commitUpdateTransaction(pm);

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      query.setUnique(true);
      MSentryRole sentryRole = (MSentryRole) query.execute(roleName);
      if (sentryRole == null) {
        throw new SentryNoSuchObjectException("Role " + roleName);
      } else {
        pm.retrieve(sentryRole);
      }
      rollbackTransaction = false;
      commitTransaction(pm);
      return sentryRole;
    } finally {

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        query.setUnique(true);
        sentryGroup = (MSentryGroup) query.execute(groupName);
        if (sentryGroup == null) {
          throw new SentryNoSuchObjectException("Group " + groupName);
        } else {
          pm.retrieve(sentryGroup);
        }
        roles = sentryGroup.getRoles();
      }
      for ( MSentryRole role: roles) {
        pm.retrieve(role);

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          pm.retrieve(sentryGroup);
        }
        roles = sentryGroup.getRoles();
      }
      for ( MSentryRole role: roles) {
        pm.retrieve(role);
      }
      commitTransaction(pm);
      rollbackTransaction = false;
      return roles;
    } finally {

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    List<GAELuceneUser> users = (List<GAELuceneUser>) query.execute(uId);
    GAELuceneUser user = null;


    if (users.size() > 0) {
      user = users.get(0);
      pm.retrieve(user);
    }


    pm.close();


    return user;

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  private UserEntity retrieveUserEntity(String userEmail) {
    PersistenceManager pm = PMF.get().getPersistenceManager();
    try {
      UserEntity userInfo = pm.getObjectById(UserEntity.class, createKey(userEmail));
      // This step is needed to fetch the data for the child objects
      pm.retrieve(userInfo);
      return userInfo;
    } catch (JDOObjectNotFoundException e) {
      return null;
    } finally {
      pm.close();

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