package de.mpiwg.itgroup.ismi.util.guiComponents;

import java.util.HashMap;
import java.util.List;

import org.mpi.openmind.repository.bo.Attribute;
import org.mpi.openmind.repository.bo.Entity;

import de.mpiwg.itgroup.ismi.auxObjects.AliasListenerObject;

/**
 * EntityList that also takes ALIASes related to the Entities.
 * 
 * @author casties
 *
 */
public class AliasEntityList extends EntityList {

    private static final long serialVersionUID = 6671675804993282617L;

    protected String aliasRelName;
    protected String entityClass;
    
    /**
     * EntityList that searches in Entity Attributes and also in ALIASes connected by a given Relation.
     * 
     * Uses relation ALIAS - aliasRelName -> ENTITY (usually "is_alias_name_of").
     * 
     * @param oc
     * @param attName
     * @param alistRelName
     * @param useCalendar
     */
    public AliasEntityList(String oc, String attName, String aliasRelName, boolean useCalendar) {
        this.aliasRelName = aliasRelName;
        this.entityClass = oc;
        this.lo = new AliasListenerObject(oc, attName, aliasRelName);
        this.useCalendar = useCalendar;
        this.calendarMap = new HashMap<Long, Calendar>();
    }

    /* (non-Javadoc)
     * @see de.mpiwg.itgroup.ismi.util.guiComponents.EntityList#add(org.mpi.openmind.repository.bo.Entity, org.mpi.openmind.repository.bo.Attribute)
     */
    @Override
    public void add(Entity e, Attribute calendarAtt) {
        // check if we add an alias
        if (e.getObjectClass().equals(ALIAS)) {
            // get original object
            List<Entity> ents = getWrapper().getTargetsForSourceRelation(e, aliasRelName,  entityClass, 1);
            Entity ent = ents.get(0);
            if (entities.contains(ent)) {
                // original is in the List -- remove it
                super.remove(ent.getId());
            }
        } else {
            // get alias
            List<Entity> ents = getWrapper().getSourcesForTargetRelation(e, aliasRelName,  ALIAS, 0);
            if (!ents.isEmpty()) {
                for (Entity ent : ents) {
                    if (entities.contains(ent)) {
                        // alias is in the List -- leave it
                        return;
                    }
                }
            }
        }
        super.add(e, calendarAtt);
    }

    
}