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

  }


  private static NativeSQLQueryCollectionReturn bindLoadCollection(Element returnElem, Mappings mappings) {
    String alias = returnElem.attributeValue( "alias" );
    String collectionAttribute = returnElem.attributeValue( "role" );
    LockMode lockMode = getLockMode( returnElem.attributeValue( "lock-mode" ) );
    int dot = collectionAttribute.lastIndexOf( '.' );
    if ( dot == -1 ) {
      throw new MappingException(
          "Collection attribute for sql query return [alias=" + alias +
          "] not formatted correctly {OwnerClassName.propertyName}"

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            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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    final Map aliasedLockModes = new HashMap();
    final Map keyColumnNames = dialect.forUpdateOfColumns() ? new HashMap() : null;
    final String[] drivingSqlAliases = getAliases();
    for ( int i = 0; i < drivingSqlAliases.length; i++ ) {
      final LockMode lockMode = ( LockMode ) lockModes.get( drivingSqlAliases[i] );
      if ( lockMode != null ) {
        final Lockable drivingPersister = ( Lockable ) getEntityPersisters()[i];
        final String rootSqlAlias = drivingPersister.getRootTableAlias( drivingSqlAliases[i] );
        aliasedLockModes.put( rootSqlAlias, lockMode );
        if ( keyColumnNames != null ) {

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      return null;
    }
    final int size = entityAliases.length;
    LockMode[] lockModesArray = new LockMode[size];
    for ( int i=0; i<size; i++ ) {
      LockMode lockMode = (LockMode) lockModes.get( entityAliases[i] );
      lockModesArray[i] = lockMode==null ? LockMode.NONE : lockMode;
    }
    return lockModesArray;
  }

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      lockModes.put( getSQLAlias( subcriteria ), me.getValue() );
    }
    iter = rootCriteria.iterateSubcriteria();
    while ( iter.hasNext() ) {
      CriteriaImpl.Subcriteria subcriteria = ( CriteriaImpl.Subcriteria ) iter.next();
      LockMode lm = subcriteria.getLockMode();
      if ( lm != null ) {
        lockModes.put( getSQLAlias( subcriteria ), lm );
      }
    }

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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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    Iterator itr = aliasedLockModes.entrySet().iterator();
    StringBuffer buffer = new StringBuffer( sql );
    int correction = 0;
    while ( itr.hasNext() ) {
      final Map.Entry entry = ( Map.Entry ) itr.next();
      final LockMode lockMode = ( LockMode ) entry.getValue();
      if ( lockMode.greaterThan( LockMode.READ ) ) {
        final String alias = ( String ) entry.getKey();
        int start = -1, end = -1;
        if ( sql.endsWith( " " + alias ) ) {
          start = ( sql.length() - alias.length() ) + correction;
          end = start + alias.length();

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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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    // it is per-invocation, not constant for the
    // QueryTranslator instance


    LockMode[] lockModesArray = new LockMode[entityAliases.length];
    for ( int i = 0; i < entityAliases.length; i++ ) {
      LockMode lockMode = lockOptions.getEffectiveLockMode( entityAliases[i] );
      if ( lockMode == null ) {
        //NONE, because its the requested lock mode, not the actual!
        lockMode = LockMode.NONE;
      }
      lockModesArray[i] = lockMode;

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      final Lockable drivingPersister = (Lockable) select.getFromClause()
          .findFromElementByUserOrSqlAlias( userAlias, drivingSqlAlias )
          .getQueryable();
      final String sqlAlias = drivingPersister.getRootTableAlias( drivingSqlAlias );


      final LockMode effectiveLockMode = lockOptions.getEffectiveLockMode( userAlias );
      locks.setAliasSpecificLockMode( sqlAlias, effectiveLockMode );


      if ( keyColumnNames != null ) {
        keyColumnNames.put( sqlAlias, drivingPersister.getRootTableIdentifierColumnNames() );
      }

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