Examples of org.hibernate.type.Type

org.hibernate.type.Type
Defines a mapping between a Java type and one or more JDBC {@linkplain java.sql.Types types}, as well as describing the in-memory semantics of the given java type (how do we check it for 'dirtiness', how do we copy values, etc).
Application developers needing custom types can implement this interface (either directly or via subclassing an existing impl) or by the (slightly more stable, though more limited) {@link org.hibernate.usertype.UserType}interface.
Implementations of this interface must certainly be thread-safe. It is recommended that they be immutable as well, though that is difficult to achieve completely given the no-arg constructor requirement for custom types. @author Gavin King @author Steve Ebersole

      SessionImplementor session)
  throws HibernateException {


    if ( object!=null && ForeignKeys.isNotTransient(entityName, object, null, session) ) {
      
      Type idType = session.getFactory().getEntityPersister(entityName).getIdentifierType();


      Serializable idOfCurrent = ForeignKeys.getEntityIdentifierIfNotUnsaved(entityName, object, session);
      Iterator iter = list.iterator();
      while ( iter.hasNext() ) {
        Serializable idOfOld = ForeignKeys.getEntityIdentifierIfNotUnsaved(entityName, iter.next(), session);
        if ( idType.isEqual( idOfCurrent, idOfOld, session.getEntityMode(), session.getFactory() ) ) {
          iter.remove();
          break;
        }
      }

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  public boolean entryExists(Object entry, int i) {
    return entry!=null;
  }


  public boolean equalsSnapshot(CollectionPersister persister) throws HibernateException {
    Type elementType = persister.getElementType();
    Map snap = (Map) getSnapshot();
    if ( snap.size()!= values.size() ) return false;
    for ( int i=0; i<values.size(); i++ ) {
      Object value = values.get(i);
      Object id = identifiers.get( new Integer(i) );
      if (id==null) return false;
      Object old = snap.get(id);
      if ( elementType.isDirty( old, value, getSession() ) ) return false;
    }
    return true;
  }

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    java.util.Map sn = (java.util.Map) snapshot;
    return getOrphans( sn.keySet(), set, entityName, getSession() );
  }


  public boolean equalsSnapshot(CollectionPersister persister) throws HibernateException {
    Type elementType = persister.getElementType();
    java.util.Map sn = (java.util.Map) getSnapshot();
    if ( sn.size()!=set.size() ) {
      return false;
    }
    else {
      Iterator iter = set.iterator();
      while ( iter.hasNext() ) {
        Object test = iter.next();
        Object oldValue = sn.get(test);
        if ( oldValue==null || elementType.isDirty( oldValue, test, getSession() ) ) return false;
      }
      return true;
    }
  }

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    return result;


  }


  public Iterator getDeletes(CollectionPersister persister, boolean indexIsFormula) throws HibernateException {
    Type elementType = persister.getElementType();
    final java.util.Map sn = (java.util.Map) getSnapshot();
    ArrayList deletes = new ArrayList( sn.size() );
    Iterator iter = sn.keySet().iterator();
    while ( iter.hasNext() ) {
      Object test = iter.next();
      if ( !set.contains(test) ) {
        // the element has been removed from the set
        deletes.add(test);
      }
    }
    iter = set.iterator();
    while ( iter.hasNext() ) {
      Object test = iter.next();
      Object oldValue = sn.get(test);
      if ( oldValue!=null && elementType.isDirty( test, oldValue, getSession() ) ) {
        // the element has changed
        deletes.add(oldValue);
      }
    }
    return deletes.iterator();

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    Queryable persister = ( Queryable ) sessionFactory.getEntityPersister( rootEntityName );
    StringTokenizer tokens = new StringTokenizer( path, "." );
    String componentPath = "";
    while ( tokens.hasMoreTokens() ) {
      componentPath += tokens.nextToken();
      Type type = persister.toType( componentPath );
      if ( type.isAssociationType() ) {
        AssociationType atype = ( AssociationType ) type;
        persister = ( Queryable ) sessionFactory.getEntityPersister(
            atype.getAssociatedEntityName( sessionFactory )
        );
        componentPath = "";
      }
      else if ( type.isComponentType() ) {
        componentPath += '.';
      }
      else {
        throw new QueryException( "not an association: " + componentPath );
      }

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    // Detect discriminator values...
    if ( value instanceof Class ) {
      Class entityClass = ( Class ) value;
      Queryable q = SessionFactoryHelper.findQueryableUsingImports( sessionFactory, entityClass.getName() );
      if ( q != null ) {
        Type type = q.getDiscriminatorType();
        String stringValue = q.getDiscriminatorSQLValue();
        // Convert the string value into the proper type.
        if ( type instanceof NullableType ) {
          NullableType nullableType = ( NullableType ) type;
          value = nullableType.fromStringValue( stringValue );

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      Type[] propertyTypes = action.getPersister().getClassMetadata()
          .getPropertyTypes();


      for ( int i = 0; i < propertyValues.length; i++ ) {
        Object value = propertyValues[i];
        Type type = propertyTypes[i];
        if ( type.isEntityType() && value != null ) {
          // find the batch number associated with the current association, if any.
          Integer associationBatchNumber = ( Integer ) entityBatchNumber.get( value );
          if ( associationBatchNumber != null && associationBatchNumber.compareTo( latestBatchNumberForType ) > 0 ) {
            // create a new batch for this type. The batch number is the number of current batches.
            latestBatchNumberForType = new Integer( actionBatches.size() );

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      while ( tokens.hasMoreTokens() ) {
        final String token = tokens.nextToken();
        if ( token.startsWith( ParserHelper.HQL_VARIABLE_PREFIX ) ) {
          String filterParameterName = token.substring( 1 );
          Object value = session.getFilterParameterValue( filterParameterName );
          Type type = session.getFilterParameterType( filterParameterName );
          if ( value != null && Collection.class.isAssignableFrom( value.getClass() ) ) {
            Iterator itr = ( ( Collection ) value ).iterator();
            while ( itr.hasNext() ) {
              Object elementValue = itr.next();
              result.append( '?' );

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    List sn = (List) snapshot;
      return getOrphans( sn, list, entityName, getSession() );
  }


  public boolean equalsSnapshot(CollectionPersister persister) throws HibernateException {
    Type elementType = persister.getElementType();
    List sn = (List) getSnapshot();
    if ( sn.size()!=this.list.size() ) return false;
    Iterator iter = list.iterator();
    Iterator sniter = sn.iterator();
    while ( iter.hasNext() ) {
      if ( elementType.isDirty( iter.next(), sniter.next(), getSession() ) ) return false;
    }
    return true;
  }

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      NativeSQLQueryNonScalarReturn ownerReturn = ( NativeSQLQueryNonScalarReturn ) alias2Return.get(ownerAlias);
      processReturn( ownerReturn );
    }


    SQLLoadable ownerPersister = ( SQLLoadable ) alias2Persister.get( ownerAlias );
    Type returnType = ownerPersister.getPropertyType( fetchReturn.getOwnerProperty() );


    if ( returnType.isCollectionType() ) {
      String role = ownerPersister.getEntityName() + '.' + fetchReturn.getOwnerProperty();
      addCollection( role, alias, fetchReturn.getPropertyResultsMap() );
//      collectionOwnerAliases.add( ownerAlias );
    }
    else if ( returnType.isEntityType() ) {
      EntityType eType = ( EntityType ) returnType;
      String returnEntityName = eType.getAssociatedEntityName();
      SQLLoadable persister = getSQLLoadable( returnEntityName );
      addPersister( alias, fetchReturn.getPropertyResultsMap(), persister );
    }

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