All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.jboss.seam.contexts.EntityBeanList Maven / Gradle / Ivy

Go to download

Seam core module for Seam framework integrated with JSF2

There is a newer version: 3.2.26.ayg
Show newest version
package org.jboss.seam.contexts;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * Swizzles entities held in the conversation context at
 * the end of each request.
 * 
 * @see PassivatedEntity
 * 
 * @author Gavin King
 *
 */
class EntityBeanList extends AbstractEntityBeanCollection {
	private static final long serialVersionUID = -2884601453783925804L;

	private List list;
	private List passivatedEntityList;

	public EntityBeanList(List instance) {
		super();
		this.list = instance;
	}

	@Override
	protected Iterable getPassivatedEntities() {
		return passivatedEntityList;
	}

	@Override
	protected Object getEntityCollection() {
		return list;
	}

	@Override
	protected void clearPassivatedEntities() {
		passivatedEntityList = null;
	}

	@Override
	protected boolean isPassivatedEntitiesInitialized() {
		return passivatedEntityList != null;
	}

	@Override
	protected void activateAll() {
		for (int i = 0; i < passivatedEntityList.size(); i++) {
			PassivatedEntity passivatedEntity = passivatedEntityList.get(i);
			if (passivatedEntity != null) {
				list.set(i, passivatedEntity.toEntityReference(true));
			}
		}
		passivatedEntityList = null;
	}

	@Override
	protected void passivateAll() {
		List newPassivatedList = new ArrayList(list.size());

		boolean found = false;
		Iterator it = list.iterator();
		for (int i = 0; it.hasNext(); i++) {
			PassivatedEntity passivatedEntity = null;
			Object value = it.next();
			if (value != null) {
				passivatedEntity = PassivatedEntity.passivateEntity(value);

				if (passivatedEntity != null) {
					if (!found) {
						list = new ArrayList(list);
						found = true;
					}

					//this would be dangerous, except that we 
					//are doing it to a copy of the original 
					//list:
					list.set(i, null);
				}
			}
			newPassivatedList.add(passivatedEntity);
		}

		// if the original list was nulled out, we don't want to overwrite the passivatedEntity list
		if (found) {
			passivatedEntityList = newPassivatedList;
		}
	}

}
    

    

    
            
    
            







    
© 2015 - 2024 Weber Informatics LLC | Privacy Policy