IBPageExportBusinessBean.java

package com.idega.builder.business;

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

import javax.ejb.FinderException;

import com.idega.builder.data.IBExportImportData;
import com.idega.builder.data.IBReferences;
import com.idega.business.IBOLookup;
import com.idega.business.IBOLookupException;
import com.idega.business.IBOServiceBean;
import com.idega.core.builder.data.ICPage;
import com.idega.core.builder.data.ICPageHome;
import com.idega.core.data.ICTreeNode;
import com.idega.core.file.data.ICFile;
import com.idega.data.IDOLookup;
import com.idega.data.IDOLookupException;
import com.idega.presentation.IWContext;
import com.idega.util.xml.XMLData;
import com.idega.xml.XMLDocument;
import com.idega.xml.XMLElement;

/**
 * <p>Title: idegaWeb</p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: idega Software</p>
 * @author <a href="thomas@idega.is">Thomas Hilbig</a>
 * @version 1.0
 * Created on Mar 12, 2004
 */
public class IBPageExportBusinessBean extends IBOServiceBean implements IBPageExportBusiness {
	
	private ICPageHome pageHome = null;
	private FileBusiness fileBusiness = null;
	private IBReferences references = null;

	
	public String exportPages(List pageIds, List templateIds, IWContext iwc) throws IOException, FinderException {
		List ids = null;
		boolean pageIdsExists = (pageIds != null && ! pageIds.isEmpty());
		boolean templateIdsExists = (templateIds != null && ! templateIds.isEmpty());
		if (! pageIdsExists && ! templateIdsExists) {
			return null;
		}
		
		IBExportImportData metadata = new IBExportImportData();
		// add always both trees, because it might be that later some templates are added (see method exportPages)
		metadata.addPageTree(iwc);
		metadata.addTemplateTree(iwc);
		if (pageIdsExists) {
			ids = new ArrayList(pageIds);
		}
		
		if (templateIdsExists) {
			if (pageIdsExists) {
				ids.addAll(templateIds);
			}
			else {
				ids = new ArrayList(templateIds);
			}
		}
		return exportPages(ids, metadata, iwc);
	}
		
	private String exportPages(List pageIds,IBExportImportData metadata, IWContext iwc) throws IOException, FinderException  {
		List finishedPageIds = new ArrayList();
		List additionalPageIds = pageIds;
		while (! additionalPageIds.isEmpty()) {
			List usedPageIds = prepareMetadataGetUsedPageIds(additionalPageIds, metadata, iwc);
			finishedPageIds.addAll(additionalPageIds);
			additionalPageIds = new ArrayList();
			Iterator iterator = usedPageIds.iterator();
			while (iterator.hasNext()) {
				Integer usedId = (Integer) iterator.next();
				if (! finishedPageIds.contains(usedId)) {
					additionalPageIds.add(usedId);
				}
			}
		}
  	FileBusiness fileBusiness = getFileBusiness();
  	return fileBusiness.getURLForOfferingDownload(metadata, iwc);
  }
	
	private List prepareMetadataGetUsedPageIds(List pageIds, IBExportImportData metadata, IWContext iwc) throws IDOLookupException, FinderException, IOException {
		List additionalPageIds = new ArrayList();
  	Iterator pageIterator = pageIds.iterator();
  	while (pageIterator.hasNext()) {
  		Integer pageId = (Integer) pageIterator.next();
  		ICPageHome pageHome = getPageHome();
  		ICPage page = pageHome.findByPrimaryKey(pageId);
  		// add parent page
  		ICTreeNode nodeTree = page.getParentNode();
  		if (nodeTree != null) {
  			Integer additionalPageId = new Integer(nodeTree.getNodeID());
  			additionalPageIds.add(additionalPageId);
  		}
  		// add template 
  		int templateId  = page.getTemplateId();
  		if (templateId != -1) {
  			Integer additionalPageId = new Integer(templateId);
  			additionalPageIds.add(additionalPageId);
  		}
  		ICFile file = page.getFile();
  		if (! file.isEmpty()) {
  			XMLData xmlData = XMLData.getInstanceForFile(file);
  			XMLDocument pageXML = xmlData.getDocument();
  			XMLElement pageRoot = pageXML.getRootElement().getChild(XMLConstants.PAGE_STRING);
  			getReferences(iwc).checkElementForReferencesNoteNecessaryModules(pageRoot, metadata);
  		}
  		metadata.addFileEntry(page);
  	}
  	// check pages that are used
  	List pages = metadata.getPageData();
  	Iterator usedPageIterator = pages.iterator();
  	while (usedPageIterator.hasNext()) {
  		ICPage usedPage = (ICPage) usedPageIterator.next();
  		Integer usedPageId = (Integer) usedPage.getPrimaryKey();
  		additionalPageIds.add(usedPageId);
  	}
		return additionalPageIds;
	}

	private IBReferences getReferences(IWContext iwc) throws IOException {
		if (this.references == null) {
			this.references = new IBReferences(iwc);
		}
		return this.references;
	}	
	
	private ICPageHome getPageHome() throws IDOLookupException {
		if (this.pageHome == null)  {
			this.pageHome = (ICPageHome) IDOLookup.getHome(ICPage.class);
		}
		return this.pageHome;
	}
	
	private FileBusiness getFileBusiness() throws IBOLookupException {
		if (this.fileBusiness == null) {
			this.fileBusiness =  (FileBusiness) IBOLookup.getServiceInstance( getIWApplicationContext(), FileBusiness.class);
		}
		return this.fileBusiness;
	}

	
}