/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.nutch.webapp.controller;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.nutch.collection.CollectionManager;
import org.apache.nutch.collection.Subcollection;
import org.apache.nutch.indexer.subcollection.SubcollectionIndexingFilter;
import org.apache.nutch.webapp.common.ServiceLocator;
import org.apache.nutch.webapp.common.Startable;
import org.apache.nutch.webapp.controller.NutchController;
import org.apache.struts.tiles.ComponentContext;
/**
* This controller is responsible for providing Collection of
* subcollections for displaying.
*/
public class SubcollectionSelectController extends NutchController implements Startable {
public class SubcollectionWrapper {
Subcollection col;
boolean checked;
/**
* UI Wrapper for subcollection
* @param col Subcollection
* @param checked is the subcollection "checked" / active
*/
public SubcollectionWrapper(Subcollection col, boolean checked){
this.col=col;
this.checked=checked;
}
public String getId(){
return col.getId();
}
public String getName(){
return col.getName();
}
public boolean getChecked(){
return checked;
}
}
public static final String REQ_ATTR_SUBCOLLECTIONS="subcollections";
public static final String REQ_ATTR_COLLECTION_SELECTED="iscollectionlimited";
private CollectionManager collectionManager;
public void nutchPerform(ComponentContext tileContext,
HttpServletRequest request, HttpServletResponse response,
ServletContext servletContext) throws ServletException, IOException {
boolean hasSelectedCollection=false;
ServiceLocator serviceLocator = getServiceLocator(request);
Collection collections=collectionManager.getAll();
ArrayList wrapped=new ArrayList();
Iterator i=collections.iterator();
String value=serviceLocator.getSearchForm().getValueString(SubcollectionIndexingFilter.FIELD_NAME);
while(i.hasNext()){
Subcollection collection=(Subcollection)i.next();
boolean checked=(value!=null && value.equals(collection.getId()));
wrapped.add(new SubcollectionWrapper(collection,checked));
if(checked){
hasSelectedCollection=true;
}
}
request.setAttribute(REQ_ATTR_SUBCOLLECTIONS, wrapped);
if(hasSelectedCollection){
LOG.info("collection was selected");
request.setAttribute(REQ_ATTR_COLLECTION_SELECTED,"1");
}
}
public void start(ServletContext servletContext) {
ServiceLocator serviceLocator=getServiceLocator(servletContext);
collectionManager=CollectionManager.getCollectionManager(serviceLocator.getConfiguration());
}
}