Example usage for org.hibernate.collection.spi PersistentCollection getValue

Introduction

In this page you can find the example usage for org.hibernate.collection.spi PersistentCollection getValue.

Prototype

Object getValue();

Source Link

Document

Return the user-visible collection (or array) instance

Usage

From source file:com.blazebit.security.impl.interceptor.ChangeInterceptor.java

License:Apache License

/**
 * /*from   w ww  .j a v a  2s  . c o  m*/
 */
@Override
public void onCollectionUpdate(Object collection, Serializable key) throws CallbackException {
    if (!EntityFeatures.isInterceptorActive()) {
        super.onCollectionUpdate(collection, key);
        return;
    }
    if (collection instanceof PersistentCollection) {
        PersistentCollection newValuesCollection = (PersistentCollection) collection;
        Object entity = newValuesCollection.getOwner();
        if (AnnotationUtils.findAnnotation(entity.getClass(), EntityResourceType.class) == null) {
            super.onCollectionUpdate(collection, key);
            return;
        }
        // copy new values and old values
        @SuppressWarnings({ "unchecked", "rawtypes" })
        Collection<?> newValues = new HashSet((Collection<?>) newValuesCollection.getValue());
        @SuppressWarnings({ "unchecked", "rawtypes" })
        Set<?> oldValues = new HashSet(((Map<?, ?>) newValuesCollection.getStoredSnapshot()).keySet());

        String fieldName = StringUtils.replace(newValuesCollection.getRole(), entity.getClass().getName() + ".",
                "");
        UserContext userContext = BeanProvider.getContextualReference(UserContext.class);
        ActionFactory actionFactory = BeanProvider.getContextualReference(ActionFactory.class);
        EntityResourceFactory resourceFactory = BeanProvider
                .getContextualReference(EntityResourceFactory.class);
        PermissionService permissionService = BeanProvider.getContextualReference(PermissionService.class);

        // find all objects that were added
        boolean isGrantedToAdd = true;
        boolean isGrantedToRemove = true;

        @SuppressWarnings({ "unchecked", "rawtypes" })
        Set<?> retained = new HashSet(oldValues);
        retained.retainAll(newValues);

        oldValues.removeAll(retained);
        // if there is a difference between oldValues and newValues
        if (!oldValues.isEmpty()) {
            // if something remained
            isGrantedToRemove = permissionService.isGranted(actionFactory.createAction(Action.REMOVE),
                    resourceFactory.createResource(entity, fieldName));
        }
        newValues.removeAll(retained);
        if (!newValues.isEmpty()) {
            isGrantedToAdd = permissionService.isGranted(actionFactory.createAction(Action.ADD),
                    resourceFactory.createResource(entity, fieldName));
        }

        if (!isGrantedToAdd) {
            throw new PermissionActionException("Element cannot be added to entity " + entity + "'s collection "
                    + fieldName + " by " + userContext.getUser());
        } else {
            if (!isGrantedToRemove) {
                throw new PermissionActionException("Element cannot be removed from entity " + entity
                        + "'s collection " + fieldName + " by " + userContext.getUser());
            } else {
                super.onCollectionUpdate(collection, key);
                return;
            }
        }
    } else {
        // not a persistent collection?
    }
}

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From source file:org.springframework.flex.core.io.LocalPersistentCollectionConverterFactory.java

License:Apache License

public <T> Converter<PersistentCollection, T> getConverter(Class<T> targetType) {
    return new Converter<PersistentCollection, T>() {
        @SuppressWarnings("unchecked")
        public T convert(PersistentCollection source) {
            if (!Hibernate.isInitialized(source)) {
                return null;
            } else {
                return (T) source.getValue();
            }//from w  ww.  j  a  v a 2  s .co m
        }
    };
}

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