160 lines
5.2 KiB
Java
160 lines
5.2 KiB
Java
/**
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*
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*/
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package org.gcube.portlets.widgets.wsexplorer.server;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.UUID;
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import org.gcube.common.homelibary.model.items.type.WorkspaceItemType;
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import org.gcube.common.homelibrary.home.exceptions.InternalErrorException;
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import org.gcube.common.homelibrary.home.workspace.WorkspaceItem;
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import org.gcube.common.homelibrary.home.workspace.folder.FolderItem;
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import org.gcube.common.homelibrary.home.workspace.folder.items.ExternalFile;
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import org.gcube.portlets.widgets.wsexplorer.client.Util;
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import org.gcube.portlets.widgets.wsexplorer.client.WorkspaceNavigatorConstants;
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import org.gcube.portlets.widgets.wsexplorer.shared.FilterCriteria;
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import org.gcube.portlets.widgets.wsexplorer.shared.Item;
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import org.gcube.portlets.widgets.wsexplorer.shared.ItemType;
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/**
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* @author Federico De Faveri defaveri@isti.cnr.it
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* Modified by Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
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*/
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public class ItemBuilder {
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public static Item purgeEmptyFolders(Item item)
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{
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for (Item child:item.getChildren()) purgeEmptyFolders(child);
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List<Item> toRemoveList = new LinkedList<Item>();
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for (Item child:item.getChildren()) {
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boolean toRemove = isAnEmptyFolder(child);
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if (toRemove) toRemoveList.add(child);
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}
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for (Item child:toRemoveList) item.removeChild(child);
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return item;
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}
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protected static boolean isAnEmptyFolder(Item item)
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{
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return Util.isFolder(item.getType()) && item.getChildren().size() == 0;
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}
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/**
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*
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* @param parent
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* @param workspaceItem
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* @param showableTypes
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* @param depth
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* @return
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* @throws InternalErrorException
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*/
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public static Item getItem(Item parent, WorkspaceItem workspaceItem, List<ItemType> showableTypes, FilterCriteria filterCriteria, int depth) throws InternalErrorException
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{
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// System.out.println("\n\n workspaceItem: " + workspaceItem.getName() + ", depth : "+depth);
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if (depth == 0) return null;
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ItemType type = getItemType(workspaceItem);
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if (!showableTypes.contains(type)) return null;
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if (!filterItem(type, workspaceItem, filterCriteria)) return null;
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// Added in date 26/06/2012 by Francesco Mangiacrapa
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// Item item = new Item(parent, workspaceItem.getId(), workspaceItem.getName(), type, workspaceItem.getPath());
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String itemName = workspaceItem.getName();
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if ( workspaceItem.getName().equals(WorkspaceNavigatorConstants.SPECIAL_FOLDERS_LABEL)) {
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itemName = "My VRE Folders";
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}
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Item item = new Item(parent, workspaceItem.getId(), itemName, type, "");
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item.setShared(workspaceItem.getType()==WorkspaceItemType.SHARED_FOLDER);
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Item empty = null;
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// Add temporary item
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if(Util.isFolder(item.getType())){
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empty = new Item(parent, UUID.randomUUID().toString(), "empty", ItemType.UNKNOWN_TYPE, "");
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item.addChild(empty);
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}
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if(depth==1) return item;
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for (WorkspaceItem child: workspaceItem.getChildren()){
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Item itemChild = getItem(item, child, showableTypes, filterCriteria, depth-1);
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if (itemChild!=null){
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// item.removeChild(empty);
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item.addChild(itemChild);
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}
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}
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// Remove the temporary item when we finish loading
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if(Util.isFolder(item.getType())&& item.getChildren().size()>1)
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item.removeChild(empty);
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return item;
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}
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protected static ItemType getItemType(WorkspaceItem item) throws InternalErrorException
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{
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switch(item.getType())
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{
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case SHARED_FOLDER:
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case FOLDER:{
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if (item.isRoot()) return ItemType.ROOT;
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return ItemType.FOLDER;
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}
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case FOLDER_ITEM: return getFolderItemType((FolderItem) item);
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}
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return null;
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}
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protected static ItemType getFolderItemType(FolderItem item)
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{
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//System.out.println("getFolderItemType "+item.getFolderItemType().toString());
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return ItemType.valueOf(item.getFolderItemType().toString());
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}
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protected static boolean filterItem(ItemType type, WorkspaceItem item, FilterCriteria filterCriteria) throws InternalErrorException
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{
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boolean mimeTypeCheck = checkAllowedMimeTypes(type, item, filterCriteria.getAllowedMimeTypes());
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if (!mimeTypeCheck) return false;
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boolean propertiesCheck = checkProperties(item, filterCriteria.getRequiredProperties());
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return propertiesCheck;
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}
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protected static boolean checkAllowedMimeTypes(ItemType type, WorkspaceItem item, List<String> allowedMimeTypes)
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{
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if (allowedMimeTypes.size()==0) return true;
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if (type == ItemType.EXTERNAL_FILE || type == ItemType.EXTERNAL_IMAGE || type == ItemType.EXTERNAL_PDF_FILE) {
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ExternalFile externalFile = (ExternalFile)item;
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String mimeType = externalFile.getMimeType();
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return allowedMimeTypes.contains(mimeType);
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}
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return true;
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}
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protected static boolean checkProperties(WorkspaceItem item, Map<String, String> requestedProperties) throws InternalErrorException
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{
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if (requestedProperties.size()==0 || item.getType()!=WorkspaceItemType.FOLDER_ITEM) return true;
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Map<String, String> itemProperties = item.getProperties().getProperties();
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for (Entry<String, String> requestProperty:requestedProperties.entrySet()) {
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String propertyValue = itemProperties.get(requestProperty.getKey());
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if (propertyValue == null) return false;
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if (!propertyValue.equals(requestProperty.getValue())) return false;
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}
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return true;
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}
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}
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