de.berlios.gpon.wui.actions.data.ItemEditAction.java Source code

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Here is the source code for de.berlios.gpon.wui.actions.data.ItemEditAction.java

Source

/*
GPON General Purpose Object Network
Copyright (C) 2006 Daniel Schulz
    
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
    
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.
    
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

package de.berlios.gpon.wui.actions.data;

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

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import de.berlios.gpon.common.Association;
import de.berlios.gpon.common.AssociationType;
import de.berlios.gpon.common.Item;
import de.berlios.gpon.common.ItemProperty;
import de.berlios.gpon.common.util.ItemMappedByName;
import de.berlios.gpon.persistence.GponDataDao;
import de.berlios.gpon.persistence.GponDataDaoException;
import de.berlios.gpon.persistence.GponModelDao;
import de.berlios.gpon.wui.actions.BaseAction;
import de.berlios.gpon.wui.forms.ItemForm;

public class ItemEditAction extends BaseAction {

    Log log = LogFactory.getLog(ItemEditAction.class);

    public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,
            HttpServletResponse response) throws Exception {

        ItemForm itemForm = (ItemForm) form;

        GponDataDao data = (GponDataDao) getObjectForBeanId("txGponDataDao");

        // this is a newly created hibernate session
        Item item = data.findItemById(itemForm.getItemId());

        // Create a mapped item and
        // inject all form values

        ItemMappedByName itmbn = new ItemMappedByName(item);

        Map map = itemForm.getMap();

        Iterator it = map.keySet().iterator();

        while (it.hasNext()) {
            String propName = (String) it.next();

            ItemProperty ip = (ItemProperty) map.get(propName);

            String value = ip.getValue();

            if (value != null && value.trim().length() > 0) {
                try {
                    itmbn.setValue(propName, value, ItemMappedByName.INPUT_FORM);
                } catch (Exception ex) {
                    saveErrors(request, convertException(ex));
                    return mapping.getInputForward();
                }
            } else {
                itmbn.removeValue(propName);
            }
        }

        List associationList = null;

        if (itemForm.getAssMap() != null && itemForm.getAssMap().keySet() != null) {
            associationList = getAssociationList(itmbn.getItem(), itemForm.getAssMap());
        }

        try {
            data.updateItem(itmbn.getItem(), associationList);
        } catch (GponDataDaoException ex) {
            if (ex.getValidationErrors() != null) {
                saveErrors(request, convertValidationErrors(ex.getValidationErrors()));
                return mapping.getInputForward();
            } else {
                // volley
                throw new Exception("Throwing forward.", ex);
            }
        } catch (Throwable t) {
            log.error("Throwable: " + t.getClass().getName() + " m: " + t.getMessage());

            while (t.getCause() != null) {
                t = t.getCause();
                log.error("Throwable: " + t.getClass().getName() + " m: " + t.getMessage());
            }
        }

        return mapping.findForward("success");

    }

    List getAssociationList(Item item, Map assocMap) {

        List assocList = new ArrayList();

        GponModelDao model = (GponModelDao) getObjectForBeanId("txGponModelDao");
        GponDataDao data = (GponDataDao) getObjectForBeanId("txGponDataDao");

        Set keySet = assocMap.keySet();

        Iterator keyIt = keySet.iterator();

        while (keyIt.hasNext()) {

            // key is like [ab]_<assoc type id> -> a_4711 or b_815
            // value: id [',' id]*
            String key = (String) keyIt.next();

            String val = (String) assocMap.get(key);

            if (val.trim().length() == 0) {
                continue;
            }

            String[] keySplit = key.split("_");
            String[] valSplit = val.split(",");

            AssociationType at = model.findAssociationTypeById(new Long(keySplit[1]));

            for (int i = 0; i < valSplit.length; i++) {
                Long id = new Long(valSplit[i]);
                Association assoc = new Association();
                assoc.setAssociationType(at);

                if (keySplit[0].equals("a")) {
                    assoc.setItemA(item);
                    assoc.setItemB(data.findItemById(id));
                } else {
                    assoc.setItemB(item);
                    assoc.setItemA(data.findItemById(id));
                }

                assocList.add(assoc);
            }
        }

        return assocList;

    }

}