source: nutchez-0.1/tomcat/webapps/examples/WEB-INF/classes/sessions/DummyCart.java @ 87

/*
* 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.util.Vector;

public class DummyCart {
    Vector<String> v = new Vector<String>();
    String submit = null;
    String item = null;
    
    private void addItem(String name) {
        v.addElement(name);
    }

    private void removeItem(String name) {
        v.removeElement(name);
    }

    public void setItem(String name) {
        item = name;
    }
    
    public void setSubmit(String s) {
        submit = s;
    }

    public String[] getItems() {
        String[] s = new String[v.size()];
        v.copyInto(s);
        return s;
    }
    
    public void processRequest() {
        // null value for submit - user hit enter instead of clicking on 
        // "add" or "remove"
        if (submit == null || submit.equals("add"))
            addItem(item);
        else if (submit.equals("remove")) 
            removeItem(item);
        
        // reset at the end of the request
        reset();
    }

    // reset
    private void reset() {
        submit = null;
        item = null;
    }
}