Examples of org.hibernate.LockMode

org.hibernate.LockMode
Instances represent a lock mode for a row of a relational database table. It is not intended that users spend much time worrying about locking since Hibernate usually obtains exactly the right lock level automatically. Some "advanced" users may wish to explicitly specify lock levels. @see Session#lock(Object,LockMode) @author Gavin King

            me.getValue() );
      }
    }
    LockMode[] lockModeArray = new LockMode[names.length];
    for ( int i = 0; i < names.length; i++ ) {
      LockMode lm = ( LockMode ) nameLockModes.get( names[i] );
      if ( lm == null ) lm = LockMode.NONE;
      lockModeArray[i] = lm;
    }
    return lockModeArray;
  }

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    this.dialect = dialect;
  }


  public ForUpdateFragment(Dialect dialect, LockOptions lockOptions, Map<String, String[]> keyColumnNames) throws QueryException {
    this( dialect );
    LockMode upgradeType = null;
    Iterator iter = lockOptions.getAliasLockIterator();
    this.lockOptions =  lockOptions;


    if ( !iter.hasNext()) {  // no tables referenced
      final LockMode lockMode = lockOptions.getLockMode();
      if ( LockMode.READ.lessThan( lockMode ) ) {
        upgradeType = lockMode;
        this.lockMode = lockMode;
      }
    }


    while ( iter.hasNext() ) {
      final Map.Entry me = ( Map.Entry ) iter.next();
      final LockMode lockMode = ( LockMode ) me.getValue();
      if ( LockMode.READ.lessThan( lockMode ) ) {
        final String tableAlias = ( String ) me.getKey();
        if ( dialect.forUpdateOfColumns() ) {
          String[] keyColumns = keyColumnNames.get( tableAlias ); //use the id column alias
          if ( keyColumns == null ) {

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   *
   * @param lockOptions contains the lock mode to apply.
   * @return The appropriate for update fragment.
   */
  public String getForUpdateString(LockOptions lockOptions) {
        LockMode lockMode = lockOptions.getLockMode();
        return getForUpdateString( lockMode, lockOptions.getTimeOut() );
  }

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   * @param lockOptions the lock options to apply
   * @return The appropriate <tt>FOR UPDATE OF column_list</tt> clause string.
   */
  @SuppressWarnings( {"unchecked"})
  public String getForUpdateString(String aliases, LockOptions lockOptions) {
    LockMode lockMode = lockOptions.getLockMode();
    Iterator<Map.Entry<String, LockMode>> itr = lockOptions.getAliasLockIterator();
    while ( itr.hasNext() ) {
      // seek the highest lock mode
      final Map.Entry<String, LockMode>entry = itr.next();
      final LockMode lm = entry.getValue();
      if ( lm.greaterThan(lockMode) ) {
        lockMode = lm;
      }
    }
    lockOptions.setLockMode( lockMode );
    return getForUpdateString( lockOptions );

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    else if ( LockModeType.class.isInstance( value ) ) {
      return getLockMode( (LockModeType) value );
    }
    else if ( String.class.isInstance( value ) ) {
      // first try LockMode name
      LockMode lockMode = LockMode.valueOf( (String) value );
      if ( lockMode == null ) {
        try {
          lockMode = getLockMode( LockModeType.valueOf( (String) value ) );
        }
        catch ( Exception ignore ) {

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      QueryParameters parameters,
      Dialect dialect,
      List<AfterLoadAction> afterLoadActions) {
    if ( dialect.useFollowOnLocking() ) {
      // currently only one lock mode is allowed in follow-on locking
      final LockMode lockMode = determineFollowOnLockMode( parameters.getLockOptions() );
      final LockOptions lockOptions = new LockOptions( lockMode );
      if ( lockOptions.getLockMode() != LockMode.UPGRADE_SKIPLOCKED ) {
        LOG.usingFollowOnLocking();
        lockOptions.setTimeOut( parameters.getLockOptions().getTimeOut() );
        lockOptions.setScope( parameters.getLockOptions().getScope() );

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    }
    return false;
  }


  protected LockMode determineFollowOnLockMode(LockOptions lockOptions) {
    final LockMode lockModeToUse = lockOptions.findGreatestLockMode();


    if ( lockOptions.hasAliasSpecificLockModes() ) {
      LOG.aliasSpecificLockingWithFollowOnLocking( lockModeToUse );
    }

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    //need to hydrate it.


    // grab its state from the ResultSet and keep it in the Session
    // (but don't yet initialize the object itself)
    // note that we acquire LockMode.READ even if it was not requested
    LockMode acquiredLockMode = lockMode == LockMode.NONE ? LockMode.READ : lockMode;
    loadFromResultSet(
        rs,
        i,
        object,
        instanceClass,

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    final List<Object> values = new ArrayList<Object>();
    final List<Type> types = new ArrayList<Type>();
    final Iterator<CriteriaImpl.Subcriteria> subcriteriaIterator = rootCriteria.iterateSubcriteria();
    while ( subcriteriaIterator.hasNext() ) {
      final CriteriaImpl.Subcriteria subcriteria = subcriteriaIterator.next();
      final LockMode lm = subcriteria.getLockMode();
      if ( lm != null ) {
        lockOptions.setAliasSpecificLockMode( getSQLAlias( subcriteria ), lm );
      }
      if ( subcriteria.getWithClause() != null ) {
        final TypedValue[] tv = subcriteria.getWithClause().getTypedValues( subcriteria, this );

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    // need to hydrate it.
    // grab its state from the ResultSet and keep it in the Session
    // (but don't yet initialize the object itself)
    // note that we acquire LockMode.READ even if it was not requested
    log.trace( "hydrating entity state" );
    final LockMode requestedLockMode = context.resolveLockMode( entityReference );
    final LockMode lockModeToAcquire = requestedLockMode == LockMode.NONE
        ? LockMode.READ
        : requestedLockMode;


    loadFromResultSet(
        resultSet,

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