/*
* 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 sessions;
import java.io.Serializable;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
public class DummyCart implements Serializable {
private static final long serialVersionUID = 1L;
final Set<Item> items = Collections.synchronizedSet(new HashSet<>());
int itemId = -1;
String submit = null;
public void setItemId(int itemId) {
this.itemId = itemId;
}
public void setSubmit(String s) {
submit = s;
}
private void addItem(int itemId) {
try {
items.add(Item.values()[itemId]);
} catch (ArrayIndexOutOfBoundsException e) {
// Ignore. Can only happen if user edits URL directly.
}
}
private void removeItem(int itemId) {
try {
items.remove(Item.values()[itemId]);
} catch (ArrayIndexOutOfBoundsException e) {
// Ignore. Can only happen if user edits URL directly.
}
}
public Item[] getItems() {
return items.toArray(new Item[0]);
}
public void processRequest() {
// null value for submit - user hit enter instead of clicking on
// "add" or "remove"
if (submit == null || submit.equals("add")) {
addItem(itemId);
} else if (submit.equals("remove")) {
removeItem(itemId);
}
// reset at the end of the request
reset();
}
// reset
private void reset() {
submit = null;
itemId = -1;
}
}