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

    int nonfilteredParamCount = queryParameters.getPositionalParameterTypes() == null
        ? 0
        : queryParameters.getPositionalParameterTypes().length;
    int filterParamCount = filteredParamCount - nonfilteredParamCount;
    for ( int i = 0; i < filterParamCount; i++ ) {
      Type type = queryParameters.getFilteredPositionalParameterTypes()[i];
      Object value = queryParameters.getFilteredPositionalParameterValues()[i];
      type.nullSafeSet( st, value, position, session );
      position += type.getColumnSpan( getFactory() );
    }


    return position;
  }

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  public boolean isWrapper(Object collection) {
    return array==collection;
  }


  public boolean equalsSnapshot(CollectionPersister persister) throws HibernateException {
    Type elementType = persister.getElementType();
    Serializable snapshot = getSnapshot();
    int xlen = Array.getLength(snapshot);
    if ( xlen!= Array.getLength(array) ) return false;
    for ( int i=0; i<xlen; i++) {
      if ( elementType.isDirty( Array.get(snapshot, i), Array.get(array, i), getSession() ) ) return false;
    }
    return true;
  }

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      final CascadeStyle style,
      final Object anything,
      final CollectionType type) {
    CollectionPersister persister = eventSource.getFactory()
        .getCollectionPersister( type.getRole() );
    Type elemType = persister.getElementType();


    final int oldCascadeTo = cascadeTo;
    if ( cascadeTo==AFTER_INSERT_BEFORE_DELETE) {
      cascadeTo = AFTER_INSERT_BEFORE_DELETE_VIA_COLLECTION;
    }


    //cascade to current collection elements
    if ( elemType.isEntityType() || elemType.isAnyType() || elemType.isComponentType() ) {
      cascadeCollectionElements(
        child,
        type,
        style,
        elemType,

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  public void beforeInitialize(CollectionPersister persister, int anticipatedSize) {
    this.bag = ( List ) persister.getCollectionType().instantiate( anticipatedSize );
  }


  public boolean equalsSnapshot(CollectionPersister persister) throws HibernateException {
    Type elementType = persister.getElementType();
    EntityMode entityMode = getSession().getEntityMode();
    List sn = (List) getSnapshot();
    if ( sn.size()!=bag.size() ) return false;
    Iterator iter = bag.iterator();
    while ( iter.hasNext() ) {

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  // Anyway, here we implement <set> semantics for a
  // <one-to-many> <bag>!


  public Iterator getDeletes(CollectionPersister persister, boolean indexIsFormula) throws HibernateException {
    //if ( !persister.isOneToMany() ) throw new AssertionFailure("Not implemented for Bags");
    Type elementType = persister.getElementType();
    EntityMode entityMode = getSession().getEntityMode();
    ArrayList deletes = new ArrayList();
    List sn = (List) getSnapshot();
    Iterator olditer = sn.iterator();
    int i=0;
    while ( olditer.hasNext() ) {
      Object old = olditer.next();
      Iterator newiter = bag.iterator();
      boolean found = false;
      if ( bag.size()>i && elementType.isSame( old, bag.get(i++), entityMode ) ) {
      //a shortcut if its location didn't change!
        found = true;
      }
      else {
        //search for it
        //note that this code is incorrect for other than one-to-many
        while ( newiter.hasNext() ) {
          if ( elementType.isSame( old, newiter.next(), entityMode ) ) {
            found = true;
            break;
          }
        }
      }

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    if ( isSingleRowLoader() && id != null ) {
      resultId = id;
    }
    else {
      
      Type idType = persister.getIdentifierType();
      resultId = (Serializable) idType.nullSafeGet(
          rs,
          getEntityAliases()[i].getSuffixedKeyAliases(),
          session,
          null //problematic for <key-many-to-one>!
        );
      
      final boolean idIsResultId = id != null && 
          resultId != null && 
          idType.isEqual( id, resultId, session.getEntityMode(), factory );
      
      if ( idIsResultId ) resultId = id; //use the id passed in
    }


    return resultId == null ?

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    final AssociationType[] ownerAssociationTypes = getOwnerAssociationTypes();
    if ( ownerAssociationTypes != null && ownerAssociationTypes[i] != null ) {
      String ukName = ownerAssociationTypes[i].getRHSUniqueKeyPropertyName();
      if (ukName!=null) {
        final int index = ( (UniqueKeyLoadable) persister ).getPropertyIndex(ukName);
        final Type type = persister.getPropertyTypes()[index];
  
        // polymorphism not really handled completely correctly,
        // perhaps...well, actually its ok, assuming that the
        // entity name used in the lookup is the same as the
        // the one used here, which it will be
  
        EntityUniqueKey euk = new EntityUniqueKey( 
            rootPersister.getEntityName(), //polymorphism comment above
            ukName,
            type.semiResolve( values[index], session, object ),
            type,
            session.getEntityMode(), session.getFactory()
          );
        session.getPersistenceContext().addEntity( euk, object );
      }

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    Map sn = (Map) snapshot;
    return getOrphans( sn.values(), map.values(), entityName, getSession() );
  }


  public boolean equalsSnapshot(CollectionPersister persister) throws HibernateException {
    Type elementType = persister.getElementType();
    Map xmap = (Map) getSnapshot();
    if ( xmap.size()!=this.map.size() ) return false;
    Iterator iter = map.entrySet().iterator();
    while ( iter.hasNext() ) {
      Map.Entry entry = (Map.Entry) iter.next();
      if ( elementType.isDirty( entry.getValue(), xmap.get( entry.getKey() ), getSession() ) ) return false;
    }
    return true;
  }

View Full Code Here

        }
      }
      else { // dotcount>=2


        // Do the corresponding RHS
        Type propertyType = getPropertyType();


        if ( propertyType == null ) {
          throw new QueryException( "unresolved property: " + path );
        }


        if ( propertyType.isComponentType() ) {
          dereferenceComponent( token );
        }
        else if ( propertyType.isEntityType() ) {
          if ( !isCollectionValued() ) dereferenceEntity( token, ( EntityType ) propertyType, q );
        }
        else if ( propertyType.isCollectionType() ) {
          dereferenceCollection( token, ( ( CollectionType ) propertyType ).getRole(), q );


        }
        else {
          if ( token != null ) throw new QueryException( "dereferenced: " + path );

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    }
  }


  protected Type getPropertyType() throws QueryException {
    String propertyPath = getPropertyPath();
    Type propertyType = getPropertyMapping().toType( propertyPath );
    if ( propertyType == null ) {
      throw new QueryException( "could not resolve property type: " + propertyPath );
    }
    return propertyType;
  }

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